To:
From:
Re:
C. Metion:
Attachment:
Discussicn:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: September 28, 2017
Stephen Dookran, P.E., City Engineer
Engineering Department
2017 Paving Program ~ Phase 2 — Construction
Change Order No. 3 to FY16 Brox Contract
To approve Change Order No. 3 to the paving contract for the FY16 Paving
Program to Brox Industries, Inc. (Brox) of Dracut, MA in the amount of
$137,945.00. Funding will be through Department: 160 Admin/Engineering;
Fund: General; Activity Description: Multi-Years Paving. Department: 169
Wastewater; Fund: Wastewater; Activities: Sewer Structures
Change Order No. 3
Prior to the initiation of road construction activities, pavement core samples were
collected from each residential street to determine the thickness of existing
pavement. Although these core samples are not a true representative of the asphalt
thickness throughout the street, it gives a rough idea. It was noticed that at some
places the thickness of asphalt pavement is less than 3 inches and an estimate of
2,000 square yards of patching was included in the contract.
During the milling process on the first 15 residential streets, we discovered the
thickness problem is more widespread than expected and the budget for patching
is almost used up. We are requesting this change order for an additional 4,000
square yards of patching for the remaining 27 streets.
Recently, two sections of Beauview Avenue (i.e. Manchester to Burnside St and
Burnside St to Charlotte St) were crack sealed and microsurfaced. The Pavement
Condition Index (PCI) of both the sections falls in preventative maintenance band
(87 to 68 PCI) i.e. fair condition. Whereas, the remaining section of Beauview
Avenue (i.e. from Charlotte Street to dead end) has a recorded PCI of 56.5 and it
falls under PCI Band #4 (68-42 PCI) and is in poor condition. Based on the
Stantec’s recommendation, it needs structural improvement.
The total value of Change Order No. 3 is $137,945.00. With Change Order No. 3,
the total contract value is $4,824,477.45.
