1352.011 Section 01 11 00 Summary of Work - ADD 2.pdf
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- Attached to
- Replace Repair Roofs for Buildings 4, 15, 90, 93
- Solicitation number
- 36C24725R0018
About this file
This document is an Addendum 2 to Section 01 11 00 Summary of Work for a roof replacement project at the VA Central Alabama Veterans Health Care System (VHCS) East Campus in Tuskegee, Alabama. The project involves comprehensive roof replacement and associated work for Buildings 4 and 90, specifically including removing existing roofing materials, performing asbestos testing, installing new roof systems with various membrane types (including 80-mil and 60-mil TPO), adding fall protection systems, and replacing mechanical components.
The project includes multiple roof areas with varying specifications, such as removing single-ply and modified bitumen membranes, installing new insulation (R-30 and R-25 options), preparing substrates, and adding new metal flashings, drain systems, and ventilation components. The document provides detailed deductive alternate options for membrane thickness and insulation values, and specifies requirements for roof areas including deck preparation, membrane installation, and additional components like solar attic fans and window system treatments. The total roof area covers approximately 46,000 square feet across multiple roof sections, with specific requirements for each area's unique characteristics.
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Text version
05-24-2023
01 11 00 Addenda 2 - 1
SECTION 01 11 00
SUMMARY OF WORK – Addenda 2
PART 1 - GENERAL
1.1 Work Covered by Contract Documents
A. Work under this Contract consists of furnishing all labor, materials and equipment necessary to perform the quality roof replacement, along with the installation of new fall protection where indicated below on Buildings 4 & 90, at the VA Central Alabama VHCS East
Campus, Tuskegee, AL, as shown on the drawings listed in Section 00
01 15 of this specification. The work will include, but is not necessarily limited to, the following:
1. Buildings 15 & 93 are not included in this contract.
2. Disposal of materials shall be in accordance with Specification
Section 01 74 19 Construction Waste Management.
3. Contractor shall obtain an asbestos testing report of all materials that will be disturbed by activities performed under this contract.
Report shall be provided to the COR. Abatement of any materials found to be containing asbestos shall be performed under Unit
Pricing and Allowances.
4. Prior to beginning work contractor shall water test all roof drains to verify drains are free flowing. Contractor shall provide a report of drain testing to COR.
5. At Roof Areas 4A.1-4A.3, remove and dispose of the existing single-ply roof membrane, base flashings, and insulation down to the existing tongue and groove wood plank deck.
6. At Roof Area 4B, remove and dispose of the existing shingle roofing and underlayment down to the existing tongue and groove wood plank deck.
7. At Roof Area 4B, prepare roof dormers’ substrate for application of shingle manufacture’s high solids silicone coating as required by manufacturer. Perform manufacturer’s recommended adhesion test prior to application of new coating.
8. At Roof Areas 4C.1 & 4C.2, remove and dispose of the existing single-ply roof membrane, base flashings, and insulation down to the existing structural concrete deck.
01 11 00 Addenda 2 - 2
9. At Roof Area 4D, remove and dispose of the existing single-ply roof membrane, base flashings, and insulation down to the existing tongue and groove wood plank deck.
10. Contractor to field verify composition of Roof Area 4D prior to beginning work.
11. At Roof Area 4E, remove and dispose of existing window system, including but not limited to, flashings, window frames, glazing, and other associated components.
a. DEDUCTIVE ALTERNATE NO. 2: Omit specification requirements to remove and dispose of existing window system. In lieu of removing existing window system, remove existing sealant and clean glass and associated frames.
12. At Roof Areas 90A – 90F & 90H – 90J, remove and dispose of modified bitumen membranes, base flashings and insulation, down to the lightweight concrete deck.
13. At Roof Area 90G, remove and dispose of modified bitumen membranes, base flashings and insulation, down to the metal deck.
14. At all roof areas, remove and dispose of existing metal flashings including but not limited to: coping, scupper liners, gutters, downspouts, drip edge, counter flashings, step flashings, head flashings, lead pipe boots, and valley metal.
a. Note: Newly installed gutters at building 4 are to remain, refer to drawings for locations of newly installed gutters.
b. Contractor shall inspect underlying fascia board and wood blocking. Remove and dispose of all deteriorated fascia board and wood blocking as specified.
15. At all roof areas, inspect the structural deck. If, in the contractor’s opinion, there are structural deck areas that require repair and/or replacement, notify the Owner and Designer. Do not proceed with any repairs or replacement until directed by the owner.
16. At all roof areas, remove and dispose of abandoned mechanical units, curbs and accessories indicated on drawings. Patch associated openings in the deck as specified.
01 11 00 Addenda 2 - 3
17. At all roof areas, remove and reinstall existing mechanical units and accessories as required for the complete removal of existing base flashings, and installation of the new roof system.
18. At all roof areas, raise existing mechanical units and accessories as required for the installation of the new roof system. Provide new curbs where required.
19. At all roof areas, remove and dispose of drain strainers and clamp rings. Scrape prime and paint existing drain bowls.
20. In Building 4 attic space, remove and dispose of water damaged or detached/fallen batt insulation.
21. At Building 4 attic space, furnish and install new batt insulation at removed and missing locations as specified.
22. At removed locations, furnish and install new wood blocking and fascia board as specified.
23. At all roof areas, furnish and install new wood blocking at eaves, rakes, and other locations required by the manufacturer to match the height of the new roof insulation.
24. At all roof areas, prior to installing new roof materials, contractor shall perform ANSI/SPRI FX-1 or IA-1, as applicable to the new roof system’s attachment to the structural deck. Pull test reports shall be provided to owner and designer along with manufacturer’s tested roof assemblies appropriate to pull test results and manufacturer’s acceptance of pull tests.
25. At Roof Areas 4A.1-4A.3, furnish and install new mechanically fastened insulation, adhered tapered insulation as required, adhered coverboard, and adhered 80-mil TPO roof system as specified.
a. DEDUCTIVE ALTERNATE NO. 1: Omit specification requirements to furnish and install 80-mil TPO membrane and R-30 insulation. In lieu of 80-mil TPO and R-30 insulation, furnish and install 60-mil TPO and R-25 insulation.
26. At Roof Area 4B, furnish and install new underlayment and architectural shingle roof system as specified.
01 11 00 Addenda 2 - 4
27. At Roof Area 4B, furnish and install new solar powered attic fans as specified.
a. DEDUCTIVE ALTERNATE No. 3: Omit specification requirements to furnish and install specified solar powered attic fans. In lieu of solar powered attic fans provide ridge openings and vents as specified.
28. Furnish and install new 4-inch diameter soffit vents and plastic louver inserts at Roof Area 4B. Remove batt insulation from the under side of the roof deck as required to provide unobstructed air flow from the soffit vents to the attic space.
29. At Roof Area 4B dormers, furnish and install new high solids silicone coating with fabric reinforcement as specified.
30. At Roof Area 4C.1 & 4C.2, furnish and install new adhered insulation, tapered insulation, coverboard, and adhered 80-mil TPO roof system as specified.
a. DEDUCTIVE ALTERNATE NO. 1: Omit specification requirements to furnish and install 80-mil TPO membrane and R-30 insulation. In lieu of 80-mil TPO and R-30 insulation, furnish and install 60-mil TPO and R-25 insulation.
31. At Roof Area 4D, furnish and install new mechanically fastened insulation, adhered insulation, adhered tapered insulation, adhered coverboard, and adhered 80-mil TPO roof system as specified.
a. DEDUCTIVE ALTERNATE NO. 1: Omit specification requirements to furnish and install 80-mil TPO membrane and R-30 insulation. In lieu of 80-mil TPO and R-30 insulation, furnish and install 60-mil TPO and R-25 insulation.
32. At Roof Area 4E, furnish and install new aluminum-framed store front window assembly and associated components as specified.
a. DEDUCTIVE ALTERNATE NO. 2: Omit specification requirements to furnish and install new aluminum-framed store front window assembly. In lieu of installing new aluminum-framed store front window assembly, apply new sealant at Roof Area 4E windows.
01 11 00 Addenda 2 - 5
33. At Roof Areas 90A – 90F & 90H - 90J, furnish and install new mechanically fastened base sheet, adhered insulation, tapered insulation, coverboard, and 80-mil TPO roof system as specified.
a. DEDUCTIVE ALTERNATE NO. 1: Omit specification requirements to furnish and install 80-mil TPO membrane and R-30 insulation. In lieu of 80-mil TPO and R-30 insulation, furnish and install 60-mil TPO and R-25 insulation.
34. At Roof Area 90G, furnish and install new mechanically fastened insulation, adhered insulation, tapered insulation, coverboard, and
80-mil TPO roof system as specified.
a. DEDUCTIVE ALTERNATE NO. 1: Omit specification requirements to furnish and install 80-mil TPO membrane and R-30 insulation. In lieu of 80-mil TPO and R-30 insulation, furnish and install 60-mil TPO and R-25 insulation.
35. At all roof areas furnish and install new wood blocking at roof edges to match the height of the new roofing. Installation of new wood blocking shall be included in the base bid. Damaged or deteriorated new wood blocking shall be replaced on a unit price basis.
36. At Roof Area 90D, 90H, & 90J, furnish and install new overflow scuppers at the locations shown on drawings.
37. At Roof Areas 90D & 90H, furnish and install new primary drains and associated drain leaders at the locations shown on drawings, as specified.
38. At all roof areas, furnish and install metal flashings including but not limited to: coping, scupper liners, gutters, downspouts, drip edge, counter flashings, step flashings, head flashings, pipe boots, and valley metal.
39. At all roof areas, furnish and install new TPO walk pads as locations shown on drawings.
40. At all roof areas, furnish and install new drain strainers and clamp rings as specified.
41. At Building 90, reinstall and certify existing lightning protection as specified.
01 11 00 Addenda 2 - 6
42. Furnish and install new fall protections systems at Building 4 &
Building 90 as specified.
43. At Roof Area 90F, scrape, prime, and paint above roof metal wall panels as specified.
44. Furnish and install miscellaneous items as specified herein.
1.2 Description of the Existing Roofing Systems
A. Information in this Section is provided only to establish general description and is not necessarily accurate. The Contractor is responsible for visiting the site and satisfying himself as to the existing conditions, size of roof areas, etc. before submitting his
Bid.
B. Refer to the existing roof assembly charts on sheets AD-101 to AD- 102.
C. Asbestos testing has not been performed. Contractor is required to retain the services of a certified industrial hygienist for asbestos testing of all materials to be disturbed under this contract.
Asbestos testing has been performed, and no ACM were detected in the roofing materials of buildings 4 and 90.
D. The approximate size of each area is as follows:
1. Building 4
a. Roof Area 4A.1 232 SF
b. Roof Area 4A.2 745 SF
c. Roof Area 4A.3 240 SF
d. Roof Area 4B 13,975 SF
e. Roof Area 4C.1 700 SF
f. Roof Area 4C.2 395 SF
g. Roof Area 4D 470 SF
h. Roof Area 4E 455 SF
2. Building 90
a. Roof Area 90A 804 SF
b. Roof Area 90B 3,850 SF
c. Roof Area 90C 10,070 SF
d. Roof Area 90D 4,140 SF
e. Roof Area 90E 1,220 SF
f. Roof Area 90F 1,500 SF
g. Roof Area 90G 275 SF
h. Roof Area 90H 8,050 SF
i. Roof Area 90I 10,180 SF
j. Roof Area 90J 4,135 SF
01 11 00 Addenda 2 - 7
PART 2 - PRODUCTS
2.1 Not used.
PART 3 - EXECUTION
3.1 Not used.
- - - END OF SECTION - - -
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