HomeMy WebLinkAboutSUB201500140 Certified Engineer's Report Road Plan and Comps. 2017-05-03 200 GARRETT ST, SUITE K CHARLOTTESVILLE VA 22902
COLLINS
434.293.3719 PH 434.293.2813 FX
www.collins-engineering.com
May 3, 2017
County of Albemarle
Department of Community Development
401 McIntire Road, Room 227
Charlottesville,VA 22902
RE: Avinity Development,Phase 2—Engineer's Certification
The Improvements for the Avinity Development, Phase II have been completed in compliance with the approved
construction plans,with the exception of the items listed below in the report.
Avinity Place(private road) has been constructed between the intersection of Avinity Loop and the intersection of
Avinity Court. All drainage structures, utilities,curb and gutter,stone,base pavement and final asphalt top coat
has been installed along the roadway. The sidewalk proposed on the south side of the roadway has not been
installed,and the street trees along this section of the roadway have not been installed. The stop signs and street
signs have been installed per plan. The roadway has been installed in accordance with the approved road plans.
Collins Engineering observed during bi-weekly field inspections the construction of the roadway, placement of
stone,and pavement installation. CBR's and geotechnical monitoring were conducted with the construction of the
roadways. Avinity Place was installed with (2) 12'lanes from F/c to F/c. The pavement design for the roadway was
8"21A base and 1.5"SM-9.5A surface course. Curb and gutter has been installed and complies with VDOT CG-6
standard,with stone bedding placed beneath all locations.
Avinity Court(private road)has been constructed for the entire length of the proposed road wtihin the Avinity
development. All drainage structures, utilities,curb and gutter,stone, base pavement and final asphalt top coat
has been installed along the roadway. The sidewalk and street trees in front of lots 1-5 have been installed per
plan; however,the sidewalk and street trees in front of lots 6-9,which are still under construction,have not yet
been installed. The stop signs and street signs have been installed per plan. Collins Engineering observed during
the bi-weekly field inspections the construction of the roadway,placement of the stone, and pavement
installation. CBR's and geotechnical monitoring was conducted with the construction of the roadways.Avinity
Court was installed as a 24'road from F/c to F/c. The pavement design for the roadway was 8"21A base and 1.5"
SM-9.5A surface course. Curb and gutter has been installed and complies with VDOT CG-6 standard,with stone
bedding placed beneath all locations.
Avinity Court(private road)between stations 10+00 and 12+50 has been constructed in accordance with the
approved construction plans. Collins Engineering observed during the bi-weekly field inspections the construction
of the roadway,placement of the stone,and pavement installation. CBR's and geotechnical monitoring was
conducted with the construction of the roadways. The pavement was installed as a 24' road from F/c to F/c with a
pavement design of 8" 21A base and 1.5"SM-9.5A surface course. Curb and gutter has been installed and
complies with VDOT CG-6 standard,with stone bedding placed beneath all locations.
Drainage structures have been installed as shown on the approved plan with very minor variations,all within the
acceptable limits of standard construction deviation,as labeled on the as-built plans. Both RCP and HDPE pipe
were utilized on this project and installed per VDOT requirements and specifications. Collins Engineering inspected
the storm sewer installation and can confirm it was installed in conformance with VDOT standards.
Soil compaction was verified;all fill was placed at 95%compaction or better.
It is my professional opinion that Avinity Phase II development has been constructed substantially in accordance
with the approved plans and in compliance with applicable regulations and requirements. Once the remaining
street trees and sidewalks are e roadway will be ready for final County acceptance.
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Sincerely, rsffli"
SCOTT
Scott Collins, PE IQ 5•
R. COLLINS Z
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