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PEACOCK HILL WATER COMPANY
WATER STORAGE AND DISTRIBUTION SYSTEM CONSTRUCTION
PEACOCK HILL SECTION THREE
ALBEMARLE COUNTY, VIRGINIA
MARCH 14, 1980
William S.Roudabush, Inc.
Engineers, Surveyors and Land Planners
914 Monticello Road
Charlottesville, Virginia 22901
4.0
Jahn William Greene 70.
6458
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For the purpose of this construction, the specifications herein will be
a suppliment to the specifications submitted and approved for sections
one and two. All work proposed for section three is already covered in
the earlier specifications except the booster pumps and the 13,200 gallon
storage tank. These specifications include complete sections on the
pumps and storage tank and suppliments for the description articles for
the distribution system and service connections.
TABLE OF CONTENTS
General Technical Provisions GT-1
Special Technical Provisions STI-1
Section I Pumps STI-1
Section II Storage Tank STII-1
Section III Water Distribution System STIII-1
Section IV Water Service Connections STIV-1
GENERAL TECHNICAL PROVISIONS
The following General Technical Provision articles from Section One
specifications:
Article A. Underground Pipelines
Article B. Concrete
Article C. Site Preparation, Excavation and Embankment
Article E. Crusher Run Stone
Article F. Seeding, Fertilizing, and Mulch
Article G. Welding
Article H. Test During Construction
Article I. Electrical Work
Article K. Disinfecting Water Lines
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GENERAL TECHNICAL PROVISIONS
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Article A. UNDERGROUND PIPELINES
A.1 Transportation and Storage
A.1 .1 All pipe shall be transported and stored as recom-
mended by the manufacturer. Particular care shall be
exercised to avoid damage to, or contamination of, the
jointing surfaces and material. No chipped, cracked or
otherwise damaged pipe will be used in the work.
F A.2 Excavation and Preparation of Trenches _ -
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A.2.1Laying Condition 1 - Stone Bedding Throughout.
_ A.2 .1 .1 All open-cut trench excavation shall be
carried to a depth of 6 inches below the design
elevation of the outside bottom of the pipe.
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- Crusher run stone of maximum size 12 inch
shall be placed and tamped in the trench so that
the bottom quadrant of the pipe will be bedded in
continuous contact with the prepared trench
bottom. Unauthorized undercutting shall be back-
filled with crusher run stone tamped in place.
` Space for joint couplings shall be so prepared
that bearing will be continuous along the pipe
`-11barrel and no load carried by the joint.
Trenches shall be kept dry during preparation of
the bottom, installation of pipe, and placing of
selected backfill. Width of trenches in which
- _ - pipe is to be installed shall be such as to pro-
] . vide adequate space for proper jointing but not
greater than the external diameter of the pipe
plus 24 inches. Wherever, during excavation,
the presence of incipient slides is noted, the
trench walls shall be restrained by adequate
sheeting and shoring, Not more than 200 feet
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of trench shall be opened in advance of pipe
laying. At the end of each day's operation,
pipe shall be adequately capped or plugged
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to prevent water or other material from entering
the pipe.
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A.2.2 Laying Condition 2 Stone Bedding !Or Special
Conditions only.
A.2 .2 . 1 Trenches shall be excavated to the depths
shown on the plans with special attention paid to .
the minimum cover designates on the drawings.
Width of trenches in which pipe is to be installed
shall be such as to provide adequate space for
proper jointing but not greater than the external
diameter of the pipe plus 24 inches.
If Iedge rock or boulder formations are encountered,
the trench shall be excavated 6 inches below grade
and backfilled to grade with a compacted minimum
depth of 6 inches of crusher run stone of maximum
1-1-inch size or other suitable material approved
by the Engineer.
Trenches shall be kept dryduring preparation of
the bottom. The bed for the pipe shall be free of
rock edges, large stone or other material which
could be injurious to the pipe and shall be shaped
so that at least the lower quadrant of the pipe will
be in complete contact with the trench bottom.
Spaces for joints shall be prepared so that bearing
will be continuous along the barrel of the pipe
and no load taken•by the joints.
Wherever, during excavation, the presence of
incipient slides is noted, the trench walls shall
be restrained by adequate sheeting and shoring.
Not more than 200 feet of trench shall be opened
-• • in advance of pipe laying. At the end of each
day's operation, pipe shall be adequately capped
or plugged to prevent water or other material
from entering the pipe.
A.3. Installation of Pipe
A.3.1 Pipe shall be protected during handling against
impact shocks and free fall.
Pipe shall be kept clean at all times and no pipe shall
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be used in the work which does not conform to the
_11.` appropriate ASA or ASTM standard. All pipe shall be
laid with ends completely seated, carefully centered
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• • and true to line and grade. No pipe shall be laid on
i _ frozen ground. Not more than 200 feet of trench shall
be opened in advance of pipelaying unless specificall;
• authorized by the Engineer.
IAfter installation, for laying condition #1 "additional
r crusher run stone shall be manually tamped around the
pipe to provide complete bedding for the bottom half of
the pipe. Extreme care must be exercised so as not to
disturb pipe alignment or grade during this tamping
operation.
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Pipe jointing methods shall be strictly as recommended
by the manufacturer.
A.4 Backfill
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A.4.1 Backfilling shall be accomplished as soon as practicabl
after the pipe has been installed and approved by the
Engineer. Trenches shall be kept dry until backfill is
placed.
Material used for backfilling shall contain no stones
having any dimension greater than 6 inches, frozen
earth, debris, or earth with an exceptionally high
_void content. For backfill up to a level of 2 feet over
the top of the pipe, only selected material containing
` no stones shall be used, and the backfill shall be
placed in uniform layers not exceeding 6 inches in
depth up each side. •Each layer shall be placed, then
carefully and uniformly tamped, so as to eliminate the
possibility of lateral displacement.
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- In roadways, streets, sidewalks,
and lawns the
?` - entire depth of backfill shall be tamped in 6 inch
layers. If subsidence occurs after pavement or
concrete is placed, the contractor shall restore as
directed by the Engineer at no cost to the Owner.
In fields and other areas not involving structures,
streets or utility lines backfill shall be tamped in
6 inch layers to a minimum depth of 2 feet over the
pipe; remaining backfill may be placed without
tamping provided the fill is compacted by rubber-
tired earthmoving equipment and mounded to allow
for future settlement. Tamping of the material.to
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a height of at least 24 inches over the top of the
pipe shall be performed manually.
All earth material required to be tamped shall be
compacted at optimum moisture content to 95%
of maximum density as compared:to the density
of the same material when tested in accordance
with AASHO T-99.
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Article B. CONCRETE
B A Materials
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B.1.1 Cement shall be Portland, type I, conforming
to ASTM designation C-IS0. Use only one brand,
• such brand to be of American manufacture. Have
cement delivered and stored in canvas bags or other -
strong, well made packages. Use no cement from
bags containing lumps or caked cement. Use no
cement salvaged from discarded or used bags.
B.1.2 Air entraining admixture shall be ASTM C-260.
B.1.3 Aggregates shall be ASTM C-33. Use no pit- •
run or naturally mixed aggregates. Store fine and
coarse aggregates separately and keep all aggregates
clean. Use agregates from only one source. Do not
use aggregates containing lumps of frozen or partially
cemented material.
Use sand consisting of clean, sound, durable grains
free from dirt, dust, clay or other harmful substances.
B.1.4 Water shall be potable unless otherwise approved
by the Engineer.
B.1.5 Reinforcing steel shall be ASTM A-432 Billet Steel,
60 ksi yield. Use new deformed, billet steel bars
for concrete reinforcement. Use no steel which has been
bent and straightened or steel with kinks and sharp bends.
Use only clean steel free from dirt, detrimental scale,
paint, oil, or other foreign substances. For bent bars,
cold bend to the shape shown on the Plans as follows:
Stirrups and tie bars shall be bent around a pin
having a diameter not less than two (2) times the
��. minimum thickness of the bar. Bends for other
bars shall be made around a pin having a diameter
not less than 6 times the minimum thickness except
for bars larger than 1 inch in which case the bends
shall be made around a pin having a diameter not
• less than 8 times the minimum thickr.'ss.
Construction joints shall be placed where detailed on the
Plans and only at locations otherwise approved by the
Engineer. Cold joints will not be allowed in any approved
pour of concrete.
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B.1.6 Waterstops shall be Vinylex, catalog No. RB6-38H,
or equal. Splice as recommended by the manufacturer in
such a manner that there will be no discontinuity in
• strength or water resistance. Use waterstops at all con-
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struction joints subject to any water pressure or moisture,
whether they are detailed on PIans or not.
B.1.7 Concrete shall be 3,000 psi (AE) . _
B.2 Forms
B.2.1 Forms shall be designed to withstand the liquid
head exerted by the wet concrete. They shall be set true
to the lines and grades shown on the Plans and shall be
cleaned and oiled before placing concrete. Reinforcing
steel shall be securely tied in place in accordance with
the spacing shown on the Plans. Use mortar-tight forms
sufficiently rigid to prevent displacement and sagging.
Use only smooth forms free from irregularities, dents,
sags, and holes. Arrange internal ties so no metal will
show in the concrete surface or discolor the surface when
exposed to weathering. Side forms may be removed after
the concrete has set sufficiently to resist damage from
removal operations. Forms supporting the weight of con-
crete shall remain in place until the concrete has reached
its specified twenty-eight day strength.
B.3 Placement of Reinforcement
B.3.1 Do not deliver reinforcement until Engineer has
approved bar schedules and bending diagrams.
Accurately place reinforcement and anchor it sufficiently
to prevent movement during placing and setting of con-
crete. Tie bars at all intersections where bar spacing
exceeds 12 inches. If spacing is twelve (12) inches
or less tie bars at alternate intersections.
Maintain proper distance from forms by stays, blocks,
ties, hangers, or other approved supports.pports. Use precast
mortar blocks of approved shapes and dimensions or
approved metal chairs. Use only galvanized metal for
chairs which are in contact with the external surface of
the concrete. Do not use pebbles, pieces of broken stone
or brick, metal pipe or wooden blocks. Maintain minimum
distance of one and one-half (11) inches between bars.
Do not place concrete until reinforcement has been in-'
spected in place.
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Article C. SITE PREPARATION, EXCAVATIONS & EMBANKMENT
CA Sitere aration
P P
C.1.1 The contractor shall clear and remove from)areas to be
excavated or filled, all obstructions and/or objectionable
material within the limits of construction. This shall
include all trees, stumps, roots, vines, debris and other
extraneous matter. If the contractor elects to dispose of
cleared and grubbed materials by burning on the site,
he shall place his burn piles in areas where no damage
to any remaining vegetation or property will result from
his operations. All local fire regulations shall be
observed when burning waste material.
Remove top soil from all areas to be excavated and from
all areas on which fill is to be placed, stockpile and
respread as directed.
C.2 Excavation
C.2.1 Classification
C.2. 1.1 Solid Rock - all undisturbed natural ledge
rock and rock in bedded deposits or unstratified
masses with such hardness as to be unpickable or
necessitate drilling and blasting in its re-
moval. Includes boulders of over one (1) cubic
yard volume.
C.2. 1.2 Common - all Original excavation except
Solid Rock. Removal of top soil or fill material
from stockpiles previously excavated is inci-
dental work and not included as excavation.
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C.2.2 Excavation for area site work and road construction shall
be to the lines and grades shown on the Plans. If
rock is encountered during excavation, such rock shall
be removed six inches below finished grade, and back
filled with select material.
If pervious or otherwise unsuitable material is en-
countered during excavation, such material shall be
excavated 18 inches below finished grade and back-
filled with select material placed in six inch layers
and compacted to 95% of maximum density when tested by
AASHO Method T-99.
If any evidence of solution channels in underlying rock
is encountered, work in this area will be stopped and
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this fact will be brought to the Engineer's attention
immediately, in order that a suitable course of action may
be determined.
Saturated soil, excavated near the water table may not
be used for embankment until it has been sufficiently
dried to allow for proper compaction.
C.2.3 Excavation for structures shall be to lines and grades-
shown on the plans. In the event that open pit excavation
will not permit compliance with special conditions noted,
provide the necessary sheeting and shoring. Foundations
shall be approved by the Engineer. Unauthorized under-
cutting shall be backfilled with concrete at the Contractor's
expense. No foundation shall be placed on disturbed soil,
unless specifically authorized by the Engineer.
If rock is encountered during structure excavation, unless
otherwise specified, the rock shall be excavated a minimum
of six inches below plan grades. Backfill to plan grade
with compacted sand material consisting of clean, well
graded and washed components free from earth or organic
substances.
Crusher run stone backfill (fully compacted) may be
substituted for sand if all provisions of Article E of these
Specifications are met.
Sand and stone blankets for structures shall be wetted
just prior to the placement of concrete thereon.
• C.2.4 Solid Rock Excavation
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C.2.4. 1 When the use of explosives is necessary the
contractor shall exercise the utmost care to
insure the safety of life and property. He shall
be responsible for any and all damage resulting
from the use of explosives in the performance of
the work by him, his agents or employees. Ex-
, plosives shall be stored in a secure manner in
compliance with local laws and regulations.
Storage facilities shall be clearly marked
• "DANGEROUS - EXPLOSIVES".
C.2.4.2 Comply with all governmental laws and regulations
pertaining to transportation, storage, and use of
explosives. Use proper blasting mats for all
operations.
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C.2.5 Protection -
Furnish, erect and maintain sheathing and bracing as
necessary to support the sides of any excavation at
no additional cost to the Owner.
Erect necessary barricades, bridges, warning lights,
and other devices to adequately protect life and property
at no additional cost to the Owner.
C.3 Embankment
C.3.1 Embankment for area grading and road construction
shall contain no rock or other foreign matter.
Build up in maximum six inch layers and compact to 95%
t. ' of maximum density when tested by AASHO Method T-99.
During compaction, maintain moisture content of soil
between 95% and 110% of the optimum as determined by
test.
C.3.2 _ Backfill for structures shall contain no rock or
other foreign matter.
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Backfill shall be placed in maximum six inch layers and
compacted to 98% of maximum density when tested by
AASHO Method T-99.
During compaction, maintain moisture content of soil
between 95% and 110% of the optimum as determined by
test.
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Article E. CRUSHER RUN STONE
E .1 Crusher run stone shall have a maximum size of lf inch.
It shall consist of hard, durable particles, or fragments
of stone, gravel or slag, free from vegetation or other
deleterious substances. Shales or other materials that
break up and weather rapidly when alternately frozen and
thawed or wetted and dried shall not be used. Stone shall
have a maximum Los Angeles abrasion percentage of wear
of 45%. Crusher run stone shall conform to the following
gradation:
Sieve Percentage by weight passing
Designation square mesh sieve
2 inch 100
1 inch 90-100
3/8 inch 50-85
No. 10 25-50
No. 40 12-30
No. 200 5-15
Should filler material be required, in addition to that in-
- herent to the above gradation, to produce a completed
mixture of aggregate capable of being processed and com-
pacted into a dense well bonded surface, it shall be blended
uniformly with the stone material on the site or at the
crushing plant.
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Article F. SEEDING, FERTILIZING, AND MULCHING
F.1 Scope
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F.1. 1 Includes spreading topsoil, seeding, fertilizing, and
mulching of all areas of raw earch resulting from the
construction. The Contractor is responsible for doing
everything necessary to establish a satisfactory stand
of grass.
Topsoil previously stockpiled shall be respread and
graded in preparation for the seeding operation. Mini-
mum thickness of topsoil shall be three inches, unless
otherwise specified.
F.2
Materials
F.2.1 Fertilizer shall be 10-10-10 applied at the rate of
1,000 lbs. per acre.
F.2.2 Agricultural lime shall be applied at the rate of -
2,000 lbs. per acre.
F.2.3 Seed the following mixture at the specified rate
per acre: 50 lbs. Kentucky 31 Fescue, 2 lbs. White
Clover, and 10 lbs. Rye Grass.
F.2.4 Mulch shall consist of hay, straw, decomposed
leaves or any similar approved material.
F.3 Construction Methods
F.3.1 After spreading fertilizer and lime at the
prescribed rate, the seedbed shall immediately
be loosened to a depth of 4 inches in order to
incorporate the fertilizer into the soil.
F.3.2 After the seed is applied at the prescribed rate, it shall
be worked into the soil to a minimum depth of one-half
inch. The seeded area shall then be compacted by
means of a cultipacker or roller in order to reduce air
pockets to a minimum.
F.3.3 Mulch shall be spread to a uniform depth of 11 inch, loose
- measurement, in a manner which will leave exposed not
more than 25% of the area. When necessary, to prevent
displz_cement, mulch shall be anchored.
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F .3.4 Seeding shall only be accomplished between
March 1 and June 15 or between August 1 and
November 1.
F .4 Maintenance
F.4. 1 Water, mow and otherwise properly maintain all
seeded areas until the project is accepted. Re-
place all mulch destroyed by fire, erosion, or
other causes. Reseed all areas where original
seeding does not "take" as many times as nec-
essary for a stand of grass acceptable to the
Engineer.
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Article G. WELDING
GA - Welding shall be done by operators who have been previously
qualified by tests as prescribed in the American Welding
Society "Standard Qualification Procedure" to,perform the type
of work required. Welding equipment shall be of a type
which will produce proper current so that the operator may
produce satisfactory welds. The welding machine shall be_
of 200-400 ampere, 25-40 volt capacity.. Electrodes shall
be of classification numbers E-6011, E-6012, E-6013, E-6020,
and E-6030, and shall be suitable for positions and other
conditions of intended use in accordance with the instructions
with each container. All welding shall be done by direct
current. -
The technique of welding employed, the appearance and quality
of welds made, and the methods of correcting defective work
shall conform to the American Welding Society "Code for Arc
Welding in Building Construction," Section 4, Workmanship.
Surfaces to be welded shall be free from loose scale, rust,
grease, paint and other foreign materials except that mill
scale which withstands vigorous wire brushing may remain.
A light film of linseed oil may likewise be disregarded. Joint
surfaces shall be free from fins and tears.
No welding shall be done when the temperature of the base is
lower than 0°F. At temperatures between 32'F and (PF the
surfaces of all areas within 3 inches of a point where a weld is
to begin shall be heated until they are too hot to touch
before welding is started. Finished members shall be true to
line and free from twists, bends and open joints.
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Article H . TESTS DURING CONSTRUCTION
H .1 Description
H .1 .1 All materials and portions of the work shall .be subject
to tests to determine compliance with these Specifications
at any time during the construction. Ml such tests shall
be at the expense of the Owner except as provided below.
The Contractor, however, shall furnish the material to be
tested (concrete, pipe, steel, or similar items) and-allow
reasonable opportunity for such tests.
Should any material or work tested fail to meet these
Specifications, the Contractor shall replace the defective
work or material entirely at his own expense, and he shall
likewise pay forall subsequent tests of replaced work or
material until the Specifications are met.
H .2 Testing - Gravity Sewers and/or Non-Pressure Pipelines.
Before being put into service and prior to acceptance of the
work, the Engineer will conduct a thorough and complete
visual inspection of the work. In addition to a visual
inspection, either an infiltration, exfiltration, or air test will
be conducted by the Contractor under the supervision of the
Engineer.
H .2.1 Infiltration test - when in the opinion of the Engineer,
ground water Ievel is equal to the highest ground water
condition in a normal year, a weir test shall be made of
flow of water from sewers in the system. The flow shall
not exceed 100 gallons per 24-hour day per inch of pipe
diameter per mile of sewer line.
H.2.2 . Exfiltration test - when in the opinion of the Engineer,
conditions are not adaptable to infiltration test, the
Engineer may require an exfiltration test to check
for defects. The section so tested shall be plugged
watertight at its lower end and the sewer filled with
water at least one foot above the top of the pipe at
the upper end. In no case shall any section of pipe be
subjected to a head in excess of 15 feet without prior
approval of the Engineer. Loss of water versus infiltration
limits, as well as appearance of leaks, shall be considered
in evaluating the results of the test_
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H.2.3 Air Test - when in the opinion of the Engineer conditions
are not readily adaptable to either an infiltration or
exfiltration test, a low pressure air test will be required.
The testing equipment, procedure, and results will all be
subject to the rigid approval of the Engineer. Results of
the air test will be reviewed for compliance with published
and widely accepted standards. •
H .2 .4 General - all defective work determined by such
inspections and tests, shall be immediately repaired and
retested until proven to be satisfactory. On completion
of such inspections or tests, all foreign matter, including
sand, rock or gravel, shall be removed from all sewers
and manholes before final acceptance of the lines.
The cost of testing (infiltration, exfiltration or air) shall
be included in the unit price bid for pipe and manholes.
The Contractor shall furnish all equipment, materials
(including water) and labor required for such inspection •
or tests. All tests will be conducted in the presence of and
under the direction of the Engineer.
H..3 Testing - Pressure Pipelines.
Before being put into service and prior to acceptance of the
work, a pressure test shall be conducted, at the Contractor's
expense, on all completed pressure pipelines on the project.
• The lines shall be filled with water and subjected to a minimum
pressure of 50 psi in excess of the rated working pressure of
the pipe for a minimum period of 8 hours without evidence of any
leakage from the system, in excess of AWWA Requirements, Section
C600. The method and equipment for conducting this test and
the pressures and time limits of the test shall be subject to the
approval of the Engineer. The Contractor shall at his expense
furnish the equipment, water and supporting means to conduct
this test in the presence of the Engineer. Should the test reveal
any weaknesses, breaks or excessive leaks in the line, such
defects shall be corrected at the expense of the Contractor, and
the system retested at the Contractor's expense, as outlined
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above. The cost of testing shall be included in the appropriate
bid items.
11.4 - - Cc-mpaction Tests
Compaction tests may be performed to test embankment and back-
fill adequacy. - These tests, if performed, will be at the Owner's
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Iexpense and will not involve the Contractor's labor.
However, if tests reveal construction deficiencies and
inadequacies, the faulty work shall be corrected and re-
- tested at the sole expense of the Contractor.
H.5 Equipment Testing l
Prior to final acceptance of the work, Mechanical and
- Electrical equipment and accessory controls shall be
• tested in the presence of the Engineer under simulated
conditions matching as closely as possible normal
3 operating conditions.
- The cost of making such tests shall be included in the
3 . ' appropriate Bid Items and shall include all equipment,
labor and materials -(including water ) necessary to con-
duct such tests.
Should performance of equipment and/or controls prove
substandard or defective, appropriate repairs or replace-
ments will be made and the complete test renin at the
Contractor's expense as outlined above, until satisfac-
. tory performance is obtained.
H-. 6 Concrete Testing
H . 6.1 Prior to delivery and use of concrete the
Contractor shall obtain and submit to the Engineer,
+ at the Contractor's expense, a certificate from a
recognized testing laboratory setting forth details
of the concrete mix to be supplied including infor-
mation concerning cement and aggregates as well
as strength test results. This requirement may be
met by a transit mixed concrete supplier by sub-
,] - mission of the required information previously de-
veloped for a standard mix.
' a H . 6.2 During construction, take 2 test cylinders from
_ each major concrete structure containing 5 or
more cubic yards or at least 2 test cylinders from
. each day's pour of concrete. From each pair of test
- - cylinders, one 7 day and one 28 day test of the com-
pressive strength will be made by a recognized testing
Ilaboratory and the results of such tests certified to the
Engineer. If more than 2 cylinders are taken in any '
day's pour the Engineer will designate the cylinders for
which 7 day and 28 day tests are to be _made. Test
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cylinders shall be field cured under conditions as similar
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as possible to that of the structure from which the cylinder
has been obtained and shall be protected at all times from
shocks or excessive vibration during storage, handling or
'°` transporting. The Contractor will furnish, at his expense,
approved cylinder cartons, spading rod, slump cone,
- trowels and any other equipment, materials, storage facilitie
transportation and assistance necessary in making such
__ cylinders and tests. Cost of the actual tests, however,
will be the obligation of the Owner. "
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Article I. ELECTRICAL WORK
I.1 Grounding
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Ground solidly the raceway system and neutral
conductor of the wiring system at main service
switching equipment. Bare copper ground con-
ductor shall be extended in conduit of tubing from the
main service equipment to ground grid or water pipe.
Make connection to water pipe using suitable ground
clamp or lug. If flang pipe is encountered, make
connection with lug bolted to street side of flange
connection. Provide grounding grid complete with bare
copper conductor and copper-clad steel ground rods.
The gounding grid shall be below grade and all con-
nections below
grade shall be by the Cadwell connection
process.
Where designated, provide empty conduit for telephone
service ground in conformance with Telephone Company
requirements.-- Leave No. lb gauge annealed pull-wire in
conduit with minimum of 4 feet of slack each end.
Provide conduit and wire for extension of ground
system to the control panel. Provide ground wire for
all motors.
1.2 Motors
Motors shall be built in accordance with the latest
standards of NEMA and as specified.
Motors shall be tested in accordance with the standards
of ASA C50 and conforming thereto for'insulation
resistance and dielectric strength.
Each motor shall be provided with adequate conduit
terminal box, adequate starting and protective
equipment as specified or required.
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Unless otherwise specified, each motor shall have
sufficient capacity to start and operate the machine
. it drives without exceeding the motor nameplate
rating, at the driven device speed specified or at
any speed and any load which may be obtained by
the drive actually furnished. The horsepowers of
motors indicated on the drawings are those estimated
to be required and are to be used to determine the
electrical feeder sizes. The horsepowers
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specified are also those estimated to be required
by the driven equipment when operating at the
specified duties and efficiencies. If the actual
horsepower required for the equipment proposed
to be furnished differs from the specified, or if '
it differs in any way from the value indicated on
the drawings, the matter must be adjusted to the
Engineer's satisfaction before installation of the
equipment.
Motors shall be rated for continuous duty at 100%
of the rated capacity and the temperature rise shall
be based on maximum rise of 40t, above 40°C
ambient temperature, unless otherwise specifically
specified or indicated on drawings. 3
Unless otherwise specified and/or required, single
speed, polyphase motors shall be NEMA Class B
or F, squirrel cage, totally enclosed fan cooled,
induction motors. Motors shall be especially wound
for the voltage specified or indicated.
Unless otherwise specified and/or required, two
speed, polyphase motors shall be NEMA Class B
or F, squirrel cage, totally enclosed fan cooled, two
winding, two speed induction motors of torque classi-
fication to match load requirement.
Each motor shall be selected for quiet operation.
Unless otherwise specified and/or rquired, single
phase motors shall be NEMA Class B, of the open,
capacitor type. Generally, motors under HP shall be
single phase. Motors 1/6 HP and under may be split
phase type.
1.3 Circuit Breaker Panelboards
Where designated, provide automatic circuit breaker
panelboards complete with enclosing cabinets, factory
r assembled interiors and circuit breakers and busses
of capacity indicated.
Circuit breakers shall be quick-make, quick-break,
trip indicating. Multipole breakers shall have common
trip. All circuit breakers shall be in accordance with
latest NEMA Standards.
GT-I2 .
Panel shall consist of a reinforced Galvanized sheet
steel frame with bus bars and circuit breakers properly
supported to prevent vibration and withstand effects of
short-circuit current. Circuit breakers shall be fully
interchangeable without disturbing adjacent units. All
.terminals shall be solderless type. All busses, straps
and connectors shall be plated and sequence phased.
Boxes shall be galvanized steel and provide wiring
gutter space in accordance with National Electric Code.
Fronts shall be sheet steel, equipped with door, hinges,
locks keyed alike, directory card holder, and trim clamps,
with color as specified.
Panelboards shall be Westinghouse Type WEB or approved
equivalent.
It shall be the Contractor's responsibility to check the
physical size of panelboards supplied to verify that
all panelboards fit within the space allotted.
All surface mounted panelboards shall be mounted on
channel or "stood-off' from the wall in approved manner
to provide air space behind the panel. Provide a type-
written circuit directory for all panelboards.
I.4 Conduit and Fittings:
Provide galvanized rigid steel conduit. (Porter Duct
electrogalvanized conduit, or Triangle Conduit and
Cable Corporation hot-dipped galvanized conduit or
approved equal.) All conduit shall be a minimum of
3/4" in size unless indicated otherwise.
Provide flexible liquid-tight conduit which shall be
"Sealtite" or approved equivalent. Fittings for galvanized
rigid steel conduit shall be threaded. Fittings
shall be suitable for application, location, intended
use and type of conduit being installed.
1.5 Wire •
Run conductors continuously from outlet to outlet
with no splices in between. Junction boxes may be
used where required. Wire connectors of insulat-
ing material or solderless pressure connectors, properly
taped, shall be utilized for all splices in wiring.
Copper conductors shall be National Electric Code
Type THW insulation unless otherwise noted.
GT-13
Copper conductors passing immediately over heaters,
near ballasts, or otherwise requiring heat resistant
insulation by virtue of condition or location, shall have
Type THHN insulation or similar type.
Copper conductors for low voltage wiring shall be NEC
Type TW insulation No. 16 AWG unless larger size is
indicated.
I.6 Feeders
I:6.1 Provide galvanized rigid steel conduit feeder
system in conformance with National Electrical Code
and accepted trade practices. Conduit shall be
minimum size required for conductors or size indicated.
Conceal conduit within walls, above ceilings and/or
below floors where possible with parallel runs kept
at least 6" from flues, heating pipes and other heated
surfaces. Arrange conduit runs so far as possible to
eliminate condensate traps. Non-encased conduit
shall run parallel to walls, ceilings, and structural
members. Right angle turns, consisting of cast metal
fittings or symmetrical bends, shall be secured to
adjacent members immediately before and immediately
following the change in direction. Bends and offsets
shall be avoided where possible, but where necessary
shall be made with an approved hickey or conduit
bending machine. Conduit which has been crushed or
deformed in any way shall not be installed. Support
conduit on approved galvanized wall brackets, ceiling
trapeze, strap hangers, or pipe straps, secured by
means of toggle bolts on hollow masonry units, ex-
pansion bolts in concrete or brick, and machine screws
on metal surfaces. Support conduit in vertical shafts at
each floor level by means of U-clamp hangers. Cut
conduit square and to accurate measurements, ream ends,
remove burrs and obstructions, apply graphite grease
to male threads only and make joints up tight with solid
electrical contact. Securely fasten conduit to all
cabinets, sheet metal outlets, junction and pull boxes
with galvanized locknuts and bushings. Provide pull
it boxes where feeders turn right angles following long
runs or in straight sections of long runs where required
to facilitate-pulling conductors into conduit. Conduit
- run underground, enclosed in concrete or exterior
masonry wall, shall be painted with epoxy material 8 to
10 mils in thickness. Paint shall be Koppers Co.
Bitumastic 300, Porter Sheraduct, or approved equivalent. .
Provide conduit and raceway fittings that are new stock
stored away from weather.
GT-I4
I.6.2 Branch Circuits
Provide galvanized steel rigid conduit branch
circuit system in conformance with National Electrical
Code. Motors located nearer floor than ceiling shall
be served by conduit run under or at floor. Recep-
tacles shall be served by conduit run under floor when
so indicated. All raceway run in concrefe and under
concrete slab shall be rigid conduit. Conduit, when -
larger than 1" shall be located below concrete slab.
Locate conduit in slab so as not to weaken structural
strength of slab; fasten conduit securely to forms in
proper position before concrete is poured. Conduit and
tubing shall be minimum 3/4" size or size indicated.
Make short connection to motor with maximum of 18"
liquid tight flexible conduit. Homeruns may be combined
in one conduit, provided all connections are in accor-
dance with National Electrical Code requirements and
maximum unbalanced current in neutral does not exceed
capacity of conductor. Conduit run underground, en-
closed in concrete or exterior masonry wall, shall be
painted with epoxy material, Koppers Company Bitumastic
300 or Porter Sheraduct or approved equivalent.
Branch circuit raceway system installation shall generally
conform to installation method described under "FEEDER"
paragraph hereinbefore.
Provide enclosed safety switch or motor switch as re-
quired or indicated for all equipment furnished under this
contract or indicated for installation by others at this time,
unless furnished with equipment supplied under other
Sections of these specifications.
All surface mounted disconnecting devices shall be
mounted on channel or "stood-off" from the wall in
approved manner to provide air space behind device.
I.7 Disconnecting Devices
I.7.1 Safety switches shall be Westinghouse Electric
Corporation, Type HF Heavy Duty or approved equivalent
r in NEMA 1 (indoor) or NEMA 3R (outdoor) enclosure.
Switches shall be supplied with dual element fuses of
size indicated and/or required for fusible safety
• switches.
GT-15
I.8 Wiring Devices
•Wiring devices, so far as practical shall be one manu-
facturer unless otherwise noted.
Light switches shall be tumble type, rated 20 amperes,
120 volts, single pole or 3-way, as required. Duplex
convenience outlets shall be for a parallel and
arounding type plug, rated 20 amperes, 120 volts, and be
of ivory color.
Plates for devices in all areas shall be brushed finished
stainless steel.
I.� Outlet, Junction, and Pull Boxes
Provide outlet boxes where indicated or required and suitable
for service intended. Outlet boxes shall meet code require-
ments. Anchor boxes securely to building structure in ap-
proved manner. Point up around boxes. Provide cast outlet
boxes where boxes are mounted on exterior of building.
Provide boxes for convenience, telephone and switch outlets
as shown on the Plans. The long axis of rectangular boxes
shall be vertical. •
Provide pull and junction boxes of Code thickness sheet steel,
with surface or flush mounting trim as required.
Provide cast junction boxes where boxes are mounted on
exterior of building. Provide weather-proof gasketed screw
•
cover pull boxes with interior baffles for separating circuits.
All outlet and junction boxes, as far as practical,
shall be from one manufacturer, unless otherwise noted.
c•r
I. 10 Outlet Locations
r- Locate outlets approximately where indicated.
Coordinate with other trades and relocate outlets when
necessary to avoid interference with other work. Ex-
- cept as otherwise indicated or specifically specified
elsewhere herein, height of outlets_above floor shall
be as follows:
GT-I6
- • r^ r,
• Wall switches 4` - 6"
Convenience outlets - - - - 3' - 10"
Panelboards 4' - 6"
Bracket lights 6' - 10"
Clock outlets 6' - 10"
Bracket lights over medicine
cabinet 6' - 10"
I.11 Air Conditioning, Motor, and Control Wiring
• Provide all wiring for air conditioning equipment, - 1
motors, combination starters, thermostats, push •
buttons, selector switches, running lights, solenoid
valves , and any automatic controls and mechanical
equipment, unless factory furnished.
� . ' All control wiring shall be in accordance with control wiring
diagrams approved by Engineer.
I.12 Lightning Protection
Provide secondary lightning arrestors on main
services.
I. 13 Fixture Outlets and Supports
Drawings show general location of all outlets as
near as possible, but no outlet shall be installed until
such locations have been approved by the Engineer.
Outlets must be fitted with approved supports for fix-
tures.. Contractor shall provide any channels required
to support fixtures between suspended ceiling structural
components. All outlet boxes must be flush with
finished surfaces where finished surfaces occur. Out-
let box flush device covers shall be used to bring boxes
flush with finished surface.
When recessed fixtures are to be used, special boxes,
when required., shall be provided for connecting fixture.
I.14 Lighting Fixtures
Where designated, provide lighting fixtures connected to
wiring system of building. Equip fixtures with glassware,
reflectors, lamps, plaster rings, supports, hangers, and
other accessories as required for installation in or on type
of ceiling as supplied under other Dig.ision of Specifications
and/or as necessary to complete installaticn ready for
service.
GT-17
All fixtures shall carry Underwriters' Laboratory labels.
Fit fluorescent fixtures with high power factor, low
noise level CBM certified rapid start Class P, auto-
.matic reset ballasts. Furnish standard cool white'
4,500 degrees K fluorescent lamps. Equip incandescent
fixtures with inside frosted lamps of wattage as in-
dicated. Furnish all fixtures arranged to Abe light tight.
Provide fixtures in strict compliance with these specs-
fications. Where substitutions are offered, proposed
alternate fixtures shall be the equivalent in Engineer's
opinion, in all respects, including but not restricted
to illuminating efficiency, material, finish, general
construction and appearance. When substitutions are
to be considered, Engineer may request samples of fix-
tures to be submitted before he makes a final decision re-
lative to any specific fixture under consideration. Sub-
stitute no fixture without written approval of Engineer.
I. 15 Conduct megger test of complete wiring systems.
Miminum allowable resistance shall be as follows:
For circuits of No. 14 or No. 12 wire, 1, 000, 000 ohms.
For circuits of No. 10 of larger conductors, a resistance
based upon the allowable current-carrying capacity of
conductors as fixed in Tables 310-12 through 310-15 of
National Electrical Code as follows:
25 to 50 amperes, inclusive 250,000 ohms
51 to 100 amperes, inclusive 100,000 ohms
101 to 200 amperes, inclusive 50,000 ohms
201 to 400 amperes, inclusive 25,000 ohms
•
401 to 800 amperes, inclusive 12,000 ohms
Over 800 amperes 5,000 ohms
Submit record of test to Engineer for approval.
Conduct operating test of completed wiring system at
such time as directed by Engineer. Equipment shall be
demonstrated to operate in accordance with requirements
of this specification. Perform tests in presence of
. Engineer or his authorized representative. Contractor
shall furnish all instruments and personnel required for
tests and Owner will furnish necessary electric power.
GT-I8
I. 16 Quiet Operation
All apparatus, equipment, components and accessories
of the systems shall operate under all conditions of
load without any sound or vibration which is objection-
able in the opinion of the Engineer. In case of moving
machinery, sound or vibration noticeable outside of the
room in which it is installed, or annoyingly noticeable
inside its room, will be considered objectionable. Sound -
• or vibration conditions considered objectionable by the
Engineer shall be corrected in an approved manner by
the Contractor at his expense.
I.17 Accessibility
' ' Contractor shall locate all equipment which must be
serviced, operated or maintained in fully accessible
positions. Equipment which shall be accessible shall
include, but not be limited to, valves, traps, unions,
expansion joints, dampers, clean-outs, motors, con-
trollers, electrical junction or pull boxes, switch-gear,
drain points, etc. If required for better accessibility,
furnish access panels of a type approved by the Engineer.
Access panels shall be of all steel construction with a minimum
of No. 16 gauge wall or ceiling frame and a minimum of No. 14
gauge panel door. Equip doors with individual key,
non-corrosive concealed hinges, rounded safety cor-
ners and flexible anchor straps, except doors for wall
panels may be secured with suitable clips and counter-
sunk screws. Otherwise all access panels shall be
flush with finished wall or ceiling. Where finished sur-
face is in acoustic tile, special size and type shall be
used. Panel shall be painted with a rust inhibitive
primer and after installation, shall be painted with not
less than two coats of lead and oil paint to match adja-
cent surface. Minor deviations from drawings may be
made to allow for better accessibility; changes of mag-
nitude or which involve extra cost shall not be made
without approval. Where access doors occur in fin-
ished
spaces, Engineer shall be notified and his
approval obtained before locating same.
I.18 Cutting and Patching
•
The Contractor shall furnish and locate all sleeves and
inserts required before the floors and walls are built, •
or shall be responsible for the cost of cutting and patch-
ing required for pipes where sleeves and inserts were not
installed, or were incorrectly located. The Contractor
shall do all drilling required for the installation of his
hangers.
GT-19
All holes cut through concrete slabs or arches shall be
punched or drilled from the under side. Close up any
superfluous openings. All material and methods of
application used for any patching, mending, or finishing
must conform to the class and quality of original material.
Remove all debris from premises daily.
I. 19 Identification
Suitably mark all thermometer cases, electric switches,
starters, relays, thermostats and equipment operating
accessories with black laminated plastic plates with
white etched letters showing the function and use of
equipment, etc. , in non-technical language.
Contractor shall identify all exposed electrical power
and communication feeder conduits at cabinets, pull
boxes and other locations, where directed, by means
of color bands and legends. Where feeder conduits
are concealed, identify the feeder cable terminating in
junction boxes, pull boxes, panel cabinets, terminal
cabinets, and other locations, where directed, by
means of engraved Bakelite identification tags, no less
than 11 inch square by 1/8 inch thick with 5/32 inch
top hole; fasten tags with sturdy nylon cord. Identi-
fication markings shall be color-keyed for voltage, phase,
etc. , and numerically listed or otherwise listed to
show function of feeder or equipment served.
Contractor shall furnish and install identifying tags on
all electrical intercommunication cables, control con-
ductors, interlocked or inter-related control circuit
conductors in junction boxes, terminal cabinets, device
covers, operators, relays, starters, etc. The identification
tags shall show origin points, destination points and
intermediate identification as required for readily trac-
ing circuit wiring. Tags shall be stamped aluminum
wrap-around type with black-filled designation mark-
?r ings and shall be securely fastened to the appropriate
conductors.
Contractor shall furnish and install a directory holder
with plexiglass plate and metal frame mounted on in-
side of door of each electrical branch circuit and dis-
tribution panel-boards and front panes of building main
GT-I10
switchboard. The directory shall be neatly typed or
lettered with India ink to properly identify each circuit
and mounted under plexiglass.
I.20 Underground Conduit
All underground conduit shall be completely encased
in concrete.
•
•
•
`.1
V
GT-I11
ArticleK . DISINFECTING WATER LINES
K . 1 Unless otherwise specified, all water pipe shall be thoroughly
disinfected in accordance with the methods set forth in AWWA
standard C601-54 . Each section of pipe shall be,flushed,
drained, and refilled, care being taken to avoid entraining or
entrapping air in the pipe upon refilling. The pipe shall then
be subjected to one of the following treatments:
K •1 . 1 A chlorine gas water mixture shall be applied
at the beginning of the pipe line extension, or
any valved section of it, at such a rate that with
a slow flow of water into the pipe the chlorine
dose shall not be less than 50 parts per million.
The treated water shall remain in the pipe for a
• minimum of 24 hours, at the end of which period
the chlorine residual is not to be less than 5 parts
per million. Following chlorination the pipe shall
be thoroughly flushed, tested, and if necessary 111
rechlorinated until a satisfactory bacteriological
test is obtained. The Contractor shall bear the
cost of all bacteriological tests.
K . 1 .2 A solution of calcium hypochlorite or such chemical
products as HTH, Perchioron and Maxochlor or
chlorinated lime may be used in place of chlorine
gas. After the pipe has been subjected to a prelim-
inary flushing, a 5 percent solution of any of the
aforementioned powders shall be injected into the
pipe in a manner similar to that required for the
addition of the liquid chlorine. Final residual and
bacteriological test shall be as specified in Para-
graph K . 1 . 1 .
K .1 .3 Dry Calcium Hypochlorite or chlorinated lime may
be used in such a manner that there shall be 1 lb.
of powder, containing70
percent available chlorine
for every 1 , 680 gallons of water in the pipe, equiv-
s alent to 50 parts per million of available chlorine.
The dry powder shall be shaken into a standpipe feed-
ing the pipe line, or it may be shaken into each length
of pipe as it is laid. The use of chlorine compounds
in tablet form may be substituted provided a minimum
of 50 ppm of available chlorine results. After the
GT-K1
materials are introduced, water shall -be-admitted very
slowly so as to avoid washing the powder to the end
of the line . After standing for a period of at least 24
hours, the remaining requirements of Paragraph K K . 1 . 1
above shall apply.
K .2 The Contractor shall obtain approval of his proposed method
for accomplishing disinfection prior to initiation of water line
construction. Applicable Health Department regulations shall
be followed at all times.
•
•
•
y
GT-K2
SPECIAL TECHNICAL PROVISIONS
SECTION I
DUAL BOOSTER PUMPS FOR PEACOCK HILL SECTION THREE
ARTICLE 1. DESCRIPTION
1.1 Work under this section includes the furnishing of all
materials, equipment, labor and incidentals necessary for the con-
struction of dual, in-line booster pumps, housed in the pump shed
(to be provided by the Owner) adjacent to the existing 25,000 gallon
storage tank. The work shall include but not be limited to the plumb-
ing and electrical wiring required to make the pumps operable and
functioning.
ARTICLE 2. PUMP SYSTEM PIPING
2. 1 Interior water piping shall be galvanized standard-wall
treaded steel. Pipe fittings shall be galvanized standard-weight
threaded malleable iron.
ARTICLE 3. PUMP AND APPURTENANT EQUIPMENT
3.1 The pumping system shall consist of two, parallel, in-
line, multistage booster pumps similar and equal to Red Jacket, Big-
flo 28 GPM series "DC" submerga pumps model number E 300 TI-11 DC,
bronze construction capable of developing 28 gpm at 280 feet of total
head. The pump motor shall be 3 horsepower, single phase, 230 volt.
3.2 The pumps shall be housed in a 4 inch minimum I.D. pipe
with flanged ends and pressure tight electrical connector for motor
leads to make a pump package.
ARTICLE 4. VALVES
4.1 Valves for interior piping shall be gate valves with
minimum working pressure rating of 200 psi. Valves shall be iron
body, bronze mounted, double disc, parallel seat, non-rising stem.
All working parts shall be bronze or bronze mounted. Provide valve
with handwheels.
4.2 Check valves shall be swing-check type, designed for
working pressure of 150 psi with a suitable opening for cleaning
without disconnecting from the pipe. The valve shall be all bronze
or cast iron body with brass or bronze trim. The pin, seat ring, and
disc face shall be of brass or bronze.
ARTICLE 5. ELECTRICAL WORK
5. 1 Electrical work shall be performed in accordance with the
STI-1
applicable portions of the General Technical Provisions and the National
Electrical Code. It shall consist of the wiring and circuitry necessary
to energize and control the two booster pumps. Single phase service is
presently available for the new pumps.
ARTICLE 6. INSTRUMENTATION AND CONTROLS
6.1 Starting and stopping of the booster pumps shall be controlled
by the water pressure at the pumps, which reflects the elevation of the
water in the high storage tank. A pressure interlock shall also be
provided to stop the pumps if the supply tank is low.
6.2 The control system shall automatically perform the following
functions:
a. start the pump when the water level in the high storage
tank is half full.
b. stop the pump when the high tank is full.
c. stop the pump when the 25,000 gallon tank cannot
provide at least 10 feet (23 psi) of head to the supply side of
the pump.
STI-2
SPECIAL TECHNICAL PROVISIONS
SECTION II
13,200 GALLON STORAGE TANK FOR
PEACOCK HILL SECTION III
ARTICLE 1. DESCRIPTION
1.1 Work under this section includes the furnishing of all
materials, equipment, labor, and incidentals necessary for the construc-
tion of the storage tank complete, in place, ready for use. It shall
include but not be limited to clearing and grubbing, excavation of all
materials of any nature including solid rock, site grading, backfilling
for structures, landscaping, and installation of exterior piping to
a distance of two (2) feet from the tank.
1.2 Material composition and installation practices for the
various items of work shall comply with applicable portions of the
General Technical Provisions, unless otherwise specified.
ARTICLE 2. SITE WORK
2.1 Storage tank site work shall consist of the following items:
a. All clearing and grubbing required for site work.
b. Earthwork and grading as shown on the Plans.
c. Excavation and backfill for structures.
d. Landscaping.
Site work shall conform to the applicable portion of the
General Technical Provisions.
2.2 After completion of the storage tank, the Contractor shall be
responsible for returning the access road to a serviceable condition.
This shall consist of grading to dress up the roadbed and ditches and
placing approximately four (4) inches of crusher run stone for a width
of 10 feet. The road shall not be graded or graveled until all heavy
construction equipment has left the site. Crusher run stone shall
conform to applicable sections of the General Technical Provisions.
2.3 All areas of raw earth resulting from site work shall be
topsoiled, seeded, fertilized, and mulched in strict accordance with
the General Technical Provisions.
2.4 Final Clean-up - The storage tank site shall be cleaned of
all rubbish, debris, trash or extraneous materials of any nature which
detract from the appearance of the site.
STII-1
All areas of the work shall be left in a neat and present-
able condition. There shall be no evidence of soil erosion or distrubance
within the work area. The Contractor shall remove all of his plant,
equipment and material from the Owner's property within 30 days from
the date of final acceptance.
ARTICLE 3. 13,200 GALLON STORAGE TANK
3.1 The storage tank shall be approximately 10 feet 6 inches
diameter by 20 feet 6 inches long, with a nominal capacity of 13,200
gallons, in full accordance with AWWA D 100 Standards.
3.2 The tank shall be fabricated from 1/4-inch thick steel
plate. Welding and miscellaneous metal fabrication shall confoiiu to
applicable portions of the General Technical Provisions. The tank
supplier shall submit shop drawings and supporting design data to the
Engineer for review and approval prior to fabrication of the tank.
3.3 The tank shall be equipped with one 20 inch diameter man-
way. The manway shall have a 4-inch steel curb. The roof manway shall
be provided with a steel cover with a rim which overlaps the manway
curb by two inches. The cover shall be hinged to the curb and shall
have a locking hasp. - i- , .- ' .- . •-
3.4 The tank shall have a 6-inch steel overflow pipe firmly
attached to the outside of the tank. The outlet end of the overflow
pipe shall be fitted with 100-mesh screen. A concrete splash block
shall be placed on the ground below the overflow pipe outlet to prevent
soil erosion. The overflow pipe shall be painted to match the tank.
3.5 A 4-inch steel gooseneck vent pipe shall be installed on
the top of the tank. The open end of the vent pipe shall be fitted
with 100-mesh screen. The vent pipe shall be painted to match the tank.
3.6 A 4-inch cast iron drain pipe shall be attached to the
bottom of the tank. The outlet end of the drainpipe shall emerge at
the natural ground line and shall be fitted with 100-mesh screen. A
concrete splash block shall be provided at the outlet end to prevent
soil erosion. The connection between drainpipe and tank shall be
watertight.
3.7 The tank fill pipe may be of the same material used in the
water distribution system. The fill pipe shall have a watertight
connection with the tank. The end of the fill pipe shall be equipped
with a 4-inch high removable silt stop.
3.8 Gate valves on the drain and fill pipes shall be cast iron
with a minimum working pressure rating of 150 psi. Gate valves shall
have non-rising stems and "0" ring type pressure seals. All working
parts shall be bronze or bronze-mounted.
STII-2
.9 A steel ladder, painted to match the tank, shall b- -.:-v-: rely
fastene. •e side of the tank closest to the m.. . .e rails
shall be 2-inch . :-inch steel bar "•e s used to fasten the
side rails to the tank s :va.<< --.401/2-inch by 3/8-inch steel. Rungs
shall be 3/4-inch -- . steel bars an. .e spaced 12 inches apart
on center -..ove the topmost bracket, there s a ungs and
th- -'.- rails shall be separated by 24 inches to facilitate -
to the manway.
3.10 The paint for the interior and exterior of the tank shall
comply with AWWA Standard D 102-64 "Painting and Repainting Steel Tanks
for Water Storage". The paint used on the tank interior must be on
the approved paint list of the Virginia State Department of Health.
Industrial Paint Company' s "Nocoro" Paint Products are specified as
standards of quality and the usual "or equal" clause shall apply. The
tank painting requirements shall be as described below.
3.10.1 Surface Preparation: The surface preparation of the tanks
shall comply with Specification AWWA D 102-64 and specifically:
a. SURFACE PREPARATION: All steel surfaces shall be
prepared by the fabricator as in Steel Structures Painting Council
SSPC-SP6-63 "Commercial Blast Cleaning" or SSPC-SP8-63 "Pickling" .
v
After blast cleaning, all surfaces shall be throughly
and completely cleaned of any residue or dust before applying
primer.
b. FIELD SURFACE PREPARATION: After the tank is in
place, unprimed areas shall be cleaned by using SSPC-SP6-63
"Commercial Blast Cleaning". The shop primed surfaces shall be
cleaned of all dirt and foreign matter. Dust that has settled
on any part of the tank as a result of the blast cleaning must
be removed before spot priming.
Primer must be applied within 24 hours after blast
cleaning.
3.10.2 The painting of the tank shall comply with Specification
AWWA D 102-64. Brush application of all paint coats preferred. Other
method of application must have written approval of the Engineer.
a. Interior Painting -
FIRST COAT: Nocoro Red Vinyl Coating M-8020. Paint
all surfaces with one coat. Dry film thickness 1-1/2 mils.
FIELD SPOT COAT: Nocoro Red Vinyl Coating M-8020.
All unprimed or abraded areas shall be spot primed. Dry coating
thickness 1-1/2 mils. Allow 12 hours before recoating.
STII-3
THIRD COAT: Nocoro Aluminum Vinyl Coating M-8023-G.
Paint the entire interior surface. Dry film thickness 1 mil.
Minimum acceptable dry coating thickness for the 3 coats - 5 mils.
Allow tank to dry at least 120 hours (5 days) before the tank is
filled with water.
b. Exterior Painting -
FIRST COAT: Nocoro Red Vinyl Coating M-4983.
Paint all surfaces with one coat, to a dry film thickness of 1-1/2 mils.
FIELD SPOT COAT: Nocoro Red Vinyl Coasting M-2983.
All unprimed or abraded areas shall be spot primed to a dry coating
thickness of 1-1/2 mils. Allow 12 hours before recoating.
SECOND COAT: Nocoro Vinyl Finish Coat M-7000
Series (see below for correct code number) . Paint the entire
exterior surface to a dry film thickness of 1-1/2 mils, making a
total of first and second coats 3 mils. Allow 12 hours before
recoating.
THRID COAT: Nocoro Vinyl Finish Coat M-7000
Series (color to be selected by Owner) . Paint the entire
exterior surface to a dry film thickness of 1-1/4 to 1-1/2 mils.
The minimum dry coating thickness for the 3 coats must be 4 mils.
3.11 The tank shall be set plumb and securely attached to concrete
supports. Concrete and reinforcing steel used in the supports shall
be as specified in the General Technical Provisions.
3.12 The tank shall be tested in accordance with the applicable
provisions of AWWA Standard D 100-73 Section 12.
3. 13 Disinfection of the tank shall be accomplished as follows:
After the paint has thoroughly dried, the tank shall be
filled slowly to the overflow level with potable water to which enough
chlorine has been added to produce a concentration of 50 ppm in the full
tank. The chlorine, either as high-test calcium hypochlorite or liquid
chlorine, shall be introduced into the water as early in the filling
operation as possible. After the tank has been filled, it shall stand
full for 24 hours. At the end of the holding period, the highly chlorin-
ated water shall be completely drained to waste and the tank shall be
refilled from the regular supply. Bacteriological samples shall be taken and
approved by the State Health Department.
3.14 The Contractor shall furnish all materials and equipment, with
the exception of water, for the testing and disinfection of the tank.
Water will be furnished by the Owner at no cost to the Contractor.
ARTICLE 4. MEASUREMENT AND PAYMENT
4.1 No measurement will be made for payment under this Section.
4.2 Payment under this Section will be at the contract lump sum
for the storage tank, complete and ready for use.
STII-4
•
a M
SPECIAL TECHNICAL PROVISIONS
SECTION III
WATER DISTRIBUTION SYSTEM FOR
PEACOCK HILL SECTION III
ARTICLE 1. DESCRIPTION
1.1 Work under this Section includes the furnishing of all
materials, equipment, labor, and incidentals, necessary for the con-
struction of the water lines, valves, valve boxes, fittings, complete,
in place, ready for use. It shall include but not be limited to
clearing and grubbing, excavation of all materials of any nature,
including solid rock, trenching, backfilling, and incidentals.
1.2 Material composition and installation practices for the
various items of work shall comply with applicable portions of the
General Technical Provisions, unless otherwise specified.
ARTICLE 2. WATER PIPE AND APPURTENANCES
2.1 Materials
2.1.1 Water pipe shall be "Bell Tite" PVC (polyvinyl chloride) as
manufactured by Anesite Division, Clow Corporation, or approved equal.
Pipe shall be joined by means of push-on rubber ring joints. The
rubber ring joint gasket shall be contained within a bell which is an
integral and homogeneous part of the pipe barrel. A lubricant re-
commended by the pipe manufacturer shall be used in making the joints.
Pipe shall conform to all requirements of commercial standard CS-256-63
for PVC and shall have minimum working pressure rating of 150 psi. Pipe
shall bear the National Sanitation Foundation seal of approval and will
comply with the requirements for Type 1, Grade 1 (PVC 1120) of the ASTM
resin specification D-1784-68, and ASTM designation D-2241, standard
specification for PVC pipe (SDR-PR) .
2.1.2 Fittings shall be PVC with push-on joint compatible with the
type of pipe used. If PVC fittings are not available for the type and
size of pipe used, fittings may be cast iron with mechanical joint ends
or cast iron with push-on joints. All fittings shall have a minimum working
pressure rating of 150 psi.
2.1.3 Gate valves shall be cast iron with a minimum working pressure
rating of 150 psi. Gate valves shall have non-rising stem and "0" ring
type pressure seals. All working parts shall be bronze or bronze-
mounted. Valve joint ends shall be either of the mechanical or push-on
type.
2.1.4 Valve boxes shall be equivalent to Mueller H-13204 plastic
valve boxes with cast iron collar and cast iron lid.
STIII-1
2.1.5 Blowoff assemblies shall consist of a 1-1/2-inch gate valve
with box and cover, and sufficient 1-1/2-inch pipe for discharge to
water course or daylight. Underground pipe used in the assembly may be
PVC, but above-ground pipe shall be cast iron. Pipe, fitting, and
valves used in the assembly shall have quality and strength character-
istics compatible with those used in construction of the water main.
2.2 Construction Methods
2.2.1 Valves and fittings shall be installed in accordance with
the manufacturer's recommendations. Valve box covers shall be set
flush with paved surfaces and 4 inches above ground in fields, woods,
and other open areas.
2.2.2 Trenches shall be excavated to a depth sufficient to provide
a minimum pipe cover of 36 inches upon completion of earthwork to the
lines and grades shown in the Plans.
2.2.3 Water lines shall be installed in accordance with the
General Technical Provisions for Laying Condition 2.
2.2.4 All water lines shall be thoroughly tested and disinfected in
accordance with the General Technical Provisions. This Contract shall
include disinfection of the service connections, which will be installed
under a separate contract.
2.2.5 Thrust blocks shall be 3,000 psi (AE) concrete and shall
be used at all bends, branch fitting and dead ends. In fill or un-
stable soil material, the pipe shall be strapped or otherwise securely
fastened to the thrust block. The method of tying pipe to thrust blocks
shall be approved by the Engineer prior to construction.
ARTICLE 3. MEASUREMENT AND PAYMENT
3. 1 Pipe length shall be based on horizontal measurement in-
cluding the space occupied by fittings and valves.
3.2 Payment shall be at the contract unit price per foot of
pipe, complete in place, with fittings, valves, collars, encasement,
and thrust blocks.
STIII-2
SPECIAL TECHNICAL PROVISIONS
SECTION IV
WATER SERVICE CONNECTIONS FOR
PEACOCK HILL SECTION III
ARTICLE 1. DESCRIPTION
1.1 Work under this Section includes the furnishing of all
materials, equipment, labor, and incidentals necessary for the in-
stallation of 30 water service connections at locations to be desig-
nated by the Engineer.
1.2 Material composition and installation practices shall
comply with applicable portions of the General Technical Provisions,
unless otherwise specified.
ARTICT,F 2. MATERIALS
2.1 Water service lines shall be 3/4-inch diameter tubing
manufactured from polybutylene or polyethylene. Polybutylene tubing
shall meet the requirements of Grade II, Type 1 polybutylene as
defined by ASTM D-2581. Polyethylene tubing shall meet the require-
ments of Type III, Class C, Category 5, Grade P34 polyethylene as
defined by ASTM D-1248. Water service tubing shall have a minimum
working pressure rating of 150 psi. Tubing shall be marked with size,
manufacturer's name, working pressure rating, and National Sanitation
Foundation approval for potable water distribution.
2.2 Water meters shall be 3/4-inch Hersey Model MMD or equal
approved by the Engineer. The minimum working pressure rating for
water meters shall be 150 psi. The meter selected shall be from a
manufacturer who can supply compatible accessories for future conver-
sion of meters to remote punched card or magnetic tape readout. Meter
boxes shall be assembled from lengths of 15-inch I.D. concrete pipe,
notched at the base to fit neatly over the service pipe. Each meter
box shall be fitted with a cast iron frame and cover equivalent to
Ford Catalog No. C31. The meter box lid shall be standard weight,
11-1/2 inches in diameter. As shown on the Plans, the meter shall be
installed with a coppersetter and angle meter valve that are compatible
with the water meter.
ARTICLE 3. CONSTRUCTION METHODS
3.1 Water service connections shall be made by tapping water
mains at locations designated by the Engineer. A corporation stop
shall be inserted into the top of the main at each connection. The
end of the 3/4-inch tubing shall be attached to the corporation stop
with a compression fitting.
STIV-1
3.2 The 3/4-inch service line shall be laid to the property
line and terminated in a meter box, which will be located on the
property line. Trenches for service connections shall be excavated
to allow a minimum of 36 inches of cover over the tubing. The tubing
shall be snaked from side to side in the trench to compensate for
contraction and settling of backfill. Tubing shall be installed in
accordance with the General Technical Provisions for Laying Condition
2. Backfilling of trenches shall be accomplished in accordance with
the General Technical Provisions.
3.3 Following installation of service connections, pressure
testing shall be accomplished in accordance with the General Technical
Provisions.
3.4 Disinfection of the service connections shall not be
included in this Contract, but will be the responsibility of the
Contractor for the main lines.
ARTICLE 4. MEASUREMENT AND PAYMENT
4.1 Pipe length shall be based on horizontal measurement
including the space occupied by fittings and valves. The quantity of
water meter assemblies shall be based on the number in place and
ready for use. The water meter assembly shall consist of the meter,
meter box and cover, crusher run stone within the box, coppersetter,
meter angle, valve, and fittings needed to connect the service line
to the meter and complete the installation as shown on the Plans.
4. 2 Payment for the service line shall be at the Contract
unit price per foot of tubing, complete with any valves and fittings
required between water main and meter box. Payment for the meter
box assemblies shall be at the Contract unit price per each assembly.
2. Consumption.
The present rate of consumption is 155 gallons per day per service.
It can be expected that the future rate of consumption will be essentially
the same.
3. Yield of source.
The present well yields 38 gpm and is stored in a 25,000 gallon tank.
An additional 28 gpm well is ready for service when needed.
(f.) Fire Flow Requirements
Fire flow is not required. Dry hydrants are provided in the area,
fed by ponds.
(g.) Sewerage system available
Sewerage facilities consist of septic tanks for each unit in a
cluster, piping to a mass septic tank and then to mass drainfields.
The drainfields have all been located and approved by local sanitarians
for the State Health Department with the well locations in mind.
(h. ) Source of water supply
The source for this section is an existing well that was approved
and permitted when the system started in 1975. For further information,
please refer to the original reports.
(i.) Proposed treatment processes
Since the source is the existing approved well and chlorination process,
please refer to the original report.
(j. ) Waste disposal
There is no waste disposal from the water treatment process.
(k. ) Automatic equipment
The automatic. equipment consists of the pressure controls that
actuate the pumps. The pressures are set to keep the existing tank at
least 80% full.
(1.) Project sites
1. Various sites considered.
The best possible place to located the pump is at the existing
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