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PROFILE E- F
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U . A. PHILLIPS
CERTIFICATE No.
oo234 i
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PROFILE- A 5
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NORIZONTAI. ��.LE.: 1"•Ip'_p" N IV Ivl VILLAGE I'HA5E IT SHE-7T Na
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MAX EVANS •LANC7Y ta9E �H1TEC�T' BCEL'1�N4L 7�I,ANNER 6��i3 OF SOUR
Specifications - dater and Sewer
Ldnam 'tillage Phase II
Real Estate III - Max Evans L.A.
1 . SCOP1I, OF WORK:
1. 1. Installation of 250 ft. ± of ten (10) inch - 150 lb.
ductile iron water main and connected to an Existing
ten (10) inch water line running along the west side
of the property.
1. 2. Installation of one (1 ) fire hydrant and valves .
1.3. Installation of three (3 ) two-inch building service
lines.
1 .4. Installation of lines , valves , and meter boxes for use
by the Albemarle County Water and Sewer Authority,
1. 5. Installation of 370 ft. ± of eight (8) inch sewer line ,
including one (1) manhole and connected to a proposed
temporary septic system.
1. 6. Installation of 100 ft. + of four (4) inch sewer li*ie
and clean-out for building connections .
1.7. Installation of a temporary septic system as per health
Dept. Permit 59D2-10-25
1. 8. Construction of piping and appurtenances shall be in
accordance with lines , grades , and details as indicated
and as specified.
2. EXCAVATIO^'
2.1 . Trenching - Do all trenching through whatever
substances encountered , to the limits indicated or
specified , and including that required for sanitary
sewers and water mains and incidental pipeline work of
the project. Trenches for underground piping and conduits
shall provide a minimum finished covered as follows :
36 in . over water piping
36 in. over sanitary sewer piping
2. 2 Excavation shall not be made below the required grade ,
except where rock or unsuitable material is encountered
at the bottom of trench excavation.
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F�r,Qt Q1)124 exec. R CERTIFICATE No.
A 00234 ry
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Such rock shall be excavated to a minimum depth
of six (6) inches below the required elevation
and backfilled with suitable material to the
elevation required to provide a foundation for
laying the pipe.
2. 3. Trench widths shall be six (6) inches minimum
and eight (8) inches maximum on each side of
pipe bells . Trenches shall be accurately graded,
and where excavations are made overdepth because
of rock, unsuitable material, or other reasons , �I
it shall be brought to grade with Type I , Grade C
aggregate (Va. Dept. of Hwys . Road and Bridge
Specifications) .
2. 4 . Trench bottoms shall be rounded by hand excavations
so that at least the bottom quadrant of pipes shall
rest on undisturbed earth for not less than 75% of
the barrel length. Bell holes shall be dug out ,
by hand after the trench bottom has been prepared
to receive the pipe . Bell holes shall be only
of such size and shape as required to accommodate
the joint and permit proper joining of the pipe. 1
2. 5. Not more than 200 ft. of trench shall be opened
in advance of pipe laying except upon specific
approval by the Engineer. Where pipes lie under
fill , the trench excavation shall be made only
after the compacted fill is in place .
2. 6 . Trenching shall be done in a manner to prevent
the flow of surface water into excavations , and
water accumulated therein shall be removed by
pumping or other means approved by the Engineer.
Sheeting, shoring, and bracing shall be provided
or required for protection of the work, workmen,
public, and surroundings .
2. 7 . Any blasting which may be required shall be done
in accordance with the requirements of applicable
laws and regulations by skilled operations . Three
days notice shall be given Owner prior to any
blasting. All blasting shall be accomplished
with low yield shots with ample protection.. The
Owner shall be notified prior to any blasting,
but the Owner will accept no responsibility for
protection to any property which may be damaged
as a result of blasting. The Contractor will be
solely responsible for damage resulting from
blasting operations .
•
•
•
2. 8. Refer to drawings for details
sfofr excavanitationry sewers
and tamped backfill required
and water mains .
2. 9 . Trench excavation shall be unclassified.
3. BACKF I LL
3. 1. Backfill material shall free
ee from treesyapproved
stumps , roots , sod, alls or
mmaterial from excavation or borowpits
fshall
be
used. Material shall not be placed
n
ground or on snow or ice . Stones larger than
one (1) inch in diameter shall be excluded from
the backfill material until the pipe has a
minimum of one (1) ft . of cover. Stones larger
than ten (10) inches in diameter shall not be
used in any backfill.
n
ers not
3, 2, Trench b (6) ll inches l thickcke dandsshalllbelthoroughly
over six (6) lines have a
and carefully tamped until pipe
minimum of twelve (12) inches of cover. Where
trenches are not under paved or surface ced raoadways
or backfill more than twelve (12)
pipelines may be accomplished by machine where
no harm to the pipelines or surrounds will result
therefrom. Where trenches are under roadwaykin
- shoulders , paved or surfaced roadways r a aboveg
areas , backfill more than twelve (12) inches
pipelines shall be accomplished in layers not over
six (6) inches thick and thoroughly and carefully
tamped.
3. 3. Backfill for trenches and structures which lie
in areas to be paved shall be compacted to a
density of 95% in accordance with AASHO T-99 .
3. 4. Backfilled excavations shall be filled to excess
elevations above the finished grade to allow
for shrinkage and settlement, except under areas
to be paved which shall be backfilled as speci-
fied above. Where settlement occurs , the settled
area shall be opened to the depth required for
proper compaction and shall then be refilled and
reqetg with
andthe
compaction,restored
moundedto the
over,
requiruiredd grade
and smoothed off.
• 3. 5. Backfill around structures shall be carefully
and symmetrically placed in six (6) to eight (8)
inch layers and shall be compacted to the
specified degree .
3.6. Backfill shall be placed in excavations only
after removal of excess water.
4. WATER PIPING
4. 1. Pipe, Fittings , Joints — All water pipe shall
be Ten ( 10) inches , as shown in the plans ,
and
good for 150 psi. working pressure . The pipe
shall be ductile iron conforming to AWWA C151- 76 ,
ANSI A21. 51-1977 , equal to Glamorgan Class 50 .
4. 2. Joints for water pipe shall be slip or push-type
joints .
4, 3 . Fittings for underground water pipe shall be
cast iron, mechanical joint, good for 160 psi.
working pressure , and conforming to ASA A21. 11.
4. 4. All ductile iron water pipe shall be cement-lined
in conformance with ASA A21 . 4, except that the
lining shall be half-thickness , commonly referred
to as "Enameling. "
4. 5 . All dcast
in conformance fittings
ASAshall 4be cement-
line
4. 6 . Pipe which is two (2) inches and under may be
Schedule 40 steel pipe .
4. 7 . All stubouts for meter connections shall be
two (2 )
inch, Type K copper tubing.
5 . LAYING PIPE
5 . 1. All water pipe, fittings , valves , and hydrants
shall be handled carefully to avoid damage ,
and
while suspended over the trench before lowering,
they shall be inspected for defects . Cast iron
pipe and fittings shall be rung with a light
hammer to detect cracks . Before pipe is laid,
all foreign matter shall be removed from the
inside and ends shall be cleaned inside and
outside.
• III
•5 . 2. Water shall not be allowed in the trench while
pipe is being laid, and care shall be taken to
tl
prevent the entrance of foreign matter into the
pipe line. Ends of pipes shall be plugged
it—
watertight whenever work is not actively in '
progress laying lines , including lunch time.
lM.
5 . 3. Iron pipe shall not be laid to any radius of
curvature less than 200 feet. Where the radius
of curvature is less , fittings shall be used
for all departures from straight line routing.
5 . 4 . Where necessary to cut cast or ductile iron pipe
in the field, i.t shall be done by means of Iti
saw or rotary cutter (not by hammer and chisel) ,
and all burrs shall be ground or filed and reamed
off. , ;
5 . 5 . Piping shall be laid so that high points and
low points will occur at locations shown on
drawings . _
. SPECIALTIES
6. 1. In addition to other equipment shown, specified,
and required, furnish and install all specialties
and miscellaneous fittings and appurtenances
necessary to complete the work.
i
6. 2. Fire hydrants , equal to Mueller #A- 24015, AWAA
Improved Type, with 5-1/5 inch valve opening,
two (2) 2-1/2 inch hose nozzles , one (1) pumper ;
nozzle, and one (1) 6 inch auxiliary gate valve,
flanged and mechanical joint ends . Hydrants shall -
be AWWA improved type , good for 160 psi. working
pressure, and of proper length for 36 inch minimum
bury. (Refer to water line profile for more
detailed information on bury required. ) Hose and
pumper threads shall be the standard of the
Albemarle County Fire Department. Provide gravel
drain bed at the base of each hydrant. Auxiliary
valves shall have 2- inch square wrench nuts .
6. 3. Valve box over each fire hydrant auxiliary inlet
gate valve and service line valves , equal to •
Mueller #H-10380 Buffalo Type with base for 8 inch
valve and of proper length to permit base to
enclose valve top at each location. Box cover
shall be marked WA'TER and be cast iron. Provide
k
$
dY.
keys of proper length to operate 2 ii�1.,,
two ,
square wrench nuts of valves . Deliver keys to
Owner and obtain receipt in duplicate . if
;
6. 4. Tapping sleeve and valve,
where required, shall
be mechanical joint type, good for 160 psi .
working pressure , equal to Mueller or MF,H.
6 . 5 . One (1) inch air release valve at each high point
in the water main, equal to Anderson #73, with
1 inch inlet , 3/4 inch outlet, and a capacity of
not less than 50 cfm. of free air at 10 psi.
Equip inlet with gate valve equal to Jenkins }
or Crane . ,0 6. 6. One (1) inch corporation cock in water main ,
located at connection of the existing ight permgt
inch line, equal to Mueller #H-10010 ,
to sterilization of new piping, and for connections
to air release valves .
7. LINE VALVES
oint indicated,
7 . 1. Furnish and iateall at valve andhvplve box. -
a main line g
, 2. Line valves shall be iron body,
bronze
to 175unted,
7 double disc, tested
parallel seat, 160 psi.
hydrostatic pressure, and good for by
working pressure . Valves shallopen turningsuar ,
counterclockwise with a two ( ) en quare
.
operating nut within five (5) of fsmissed
where
grade. Provide extension stems with guud hubs
ides required. Stems shall berising,
matching those
shall be for mechanical joints
•
used in cast iron water piping.
7 , 3 . The valve box over
each
firenhydrant auxiliarye valve shall be the
same as specified for
inlet gate valves , except that the box base shall
be sized to fit its respective line valve .
8 . TESTS
8 . 1. The Contractor shall test all water piping in the
presence of the Owner' s representative and a
representative of te Albemarle
waterCounty
eachrsection
Authority, filling slowly with
R , r
to be tested , ��,,;Sax . ' 1 x1 r •
and pr)vin.. by 1 ,s e^;icy .11 )} r. tom.
va1'JE` y fl ♦ • iizs , , ..i are
tight �. , S ^ . . 1 `ir"a• i • it :Eas,a"e-1
at the :11. ne t e1 7q 1 J iY tlon "nd test . _.eak _. <; i.r h,th fir. . A , i
100 27a_1 -ems r y - , rs- . le , 2 - ner1C -
STERILIZATION
9 . 1. Before being placed in service, the entire system
of water piping shall be, chlorin,zted. Chlorine - : -
shall be applied by mean of a high test hypoch-
lorite (HT.-P and water nixti,rc
9 . 2. As ., :'Z p o i r- c,f pip,: ; - Ia . ,'
t
1/6 oz.: eac.L 1 be stunk ,t of -
• the pipe with pipe clor 4,, + th the
following s. iedulc :
Pipe size No. t per joint
4 in. I
6 in.
8 in. Z
10 in.
9 . 3. Water shall not be 'allowed iTi the main until
construction is complet- ;°nd t:. system is ready
foi thc pros- ore te-t . Ihe• sv ,' cm shall `hen
be filled s o iy and k o d fir 24 hours
during which t i t pressure t ::_. ` y ron.
If the pr.:ssce f aid . t b c- es
necessary to r, dove oothe . o disturb p '
of the newly as t ru..ced ;, a , ,, `he pipe shalt n e
sterilized again is directc .i th Engineer .
9 . 4. During th.. tern i zatic• r, ro . , that portion of
the system being stet red ;h .:11 }„. tightly
valved off beioq 1.sed for
domest c cc • ,,es a. .1 accessories
with -on of �`: .i tat :ng the system
bei ,g -- c: riliz:c(1, shall t) inc '.uding all
facets and hydrants till ' c - rc : 1 ai labl , i th,
are .
1
9.•5. After sterili tion, the water shall be ushed
from the pipi...b system through the faucets and
hydrants in the immediate area until the leaving
water is that supplied from the Albemarle County
Service Authority, free from supplementary
chlorination of the test.
As stipulated in Section 12 . 11 of the Waterworks
Regulations , prior to placing a distribution main
into service, at least two successive satisfactory
bacteriological samples , taken on 24-hour
intervals , must have been obtained.
9. 6. Owner and Engineer shall be notified three days
in advance of sterilization operations .
3. SANITARY SEWER PIPELINE
10 . 1. Sewer Pipe, Fittings , and Joints — All sanitary - ,
sewer pipe and fittings shall be Type I , Schedule ,
40 , eight (8) inch PVC pipe conforming to
ASTM Spec. 1785 . All joints are to be slip or
push type . Solvent welded eight (8) inch joints
are prohibited.
1
10. 2 . Laying Pipe — All sewers shall be laid true to
line and grade with bells upgrade . Pipe sections
shall be so laid and fitted that, when complete,
the sewer shall have a smooth and uniform invert.
The pipe shall be kept clean, and each length
shall be inspected for defects before being placed
in the trench.
Water shall not be allowed in the trench while
pipe is being laid.
Exposed ends of pipes shall be fully protected
with an approved stopper . The interior of the
pipelines shall be free of foreign matter as the
work progresses , and pipelines shall be flushed
clean upon completion of laying and jointing.
Adequate backfill shall be placed on the pipe to
prevent floatation.
All manhole connections are to be made using a
flexible joint.
10• 3. • Alignment — Aft€-- pipe joints have been in! cted
and approved and e pipe backfilled to one ) ft.
, above the top' of the pipe, a light shall be L
flashed between locations to ascertain that align-
ment is true and no pipes misplaced. After any
misalignments that are found have been corrected
by the Contractor and the alignment found true by
the Owner' s representative, backfilling shall be
continued.
z4
10. 4. Allowable infiltration — The infiltration into ,� ,' , r
the completed sewer shall not exceed a rate of , sks `
�I gal. /per day per 1 inch diameter pipe per mile .
(ter itX
Notwithstanding conformance to the foregoing
qnn requirements , the work will not be accepted if e` g
/L� there is a visible leak in the sewer or at sewer : +
structures . `°'4 '`.
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