T24099.RFG - City of East Lansing - 2025 Roofing - Addendum #1.pdf
PDF 2 MB Posted
- Solicitation number
- T24099.RFG3
- Issued by
- Grand Traverse County, Dorr CDP, Michigan
About this file
Addendum #1 for the 2025 Roofing Replacement Program is issued by StructureTec for the City of East Lansing, covering roof replacement projects at City Hall and Hannah Community Center. The addendum, dated October 14th, 2024, modifies the original bidding documents and provides critical clarifications for potential bidders. Key items include distributing a pre-bid sign-in sheet, sharing a photo report of project areas, clarifying warranty audit pricing, and specifying contractor responsibilities such as providing temporary fencing to protect work areas and public safety. The bid is due on October 23rd, 2024, and bidders must acknowledge receipt of this addendum on their bid form.
The addendum includes several technical specifications and requirements for the roofing project. These include mandating specific tape and flashing requirements (3" seam tape, 5" cover tape), specifying DensDeck by Georgia-Pacific as the basis of design for cover board, and requiring contractors to provide tapered insulation layouts for review. Additional details address access ladder installations, roof replacement procedures, and instructions for protecting existing roof systems during work. The project involves multiple roof areas with varying deck types, including metal, gypsum, and concrete decks, and uses EPDM and TPO roof membranes. Liquidated damages are not included in this project, and contractors are responsible for material and equipment security.
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| File | Type | Posted |
|---|---|---|
| T24099.RFG3_City of East Lansing - 2025 Roofing Specifications.pdf |
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Text version
ADDENDUM #1
Client: City of East Lansing Project: 2025 Roofing Replacement
Facility:
City Hall & Hannah Community Center Project No.: T24099.RFG4
Address: East Lansing, MI 48823 Date: October 14th, 2024
This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents, dated October 2024.
Acknowledge receipt of this addendum in the space provided on the Bid Form. Failure to do so may subject bidder to disqualification.
This addendum consists of 20 page(s).
Item #1: For Information: Attached is the pre-bid sign in sheet.
Item #2: For Information: Attached is a photo report of select photos of the areas included in the scope of work.
Item #3: For Clarification: StructureTec will be distributing the Warranty Audit Pricing described on the bid proposal form prior to the bid due date for bidders to include. If additional bidders require information that did not attend the pre-bid, please request it from christine.hawkinson@structuretec.com.
Item #4: For Clarification: Contractor is responsible for security of materials and equipment. Due to local children and family foot traffic temporary fencing / rope should be provided to protect the general public and prevent damage or theft.
Item #5: For Clarification: Liquidated damages are not included in this project.
Item #6: For Clarification: The roof system will require both 3” seam tape and minimum 5” cover tape. All flashings shall be stripped in, the perimeter edge details will need to have both 5” and 9” flashings installed as specified at applicable details.
Item #7: For Clarification: The tapered insulation layout noted on the drawings is for design intent only. The contractor will be responsible for providing a tapered insulation layout for review and approval prior to construction.
Item #8: For Clarification: The basis of design for the cover board is DensDeck by Georgia-Pacific.
Item #9: For Clarification: The new access ladders to be installed from Roof Area I to Roof Area J and the one from Roof Area I to Roof Area F at the Hannah Community Center shall be a crossover type with a landing to assist with crossing over the existing coping / wall safely.
Item #10: For Clarification: If any roofing replacement procedures require passing over any existing roof systems the roofing contractor shall protect the existing roofs with minimum 1” insulation then 3/4” plywood per Section 02220.
Item #11: For Revision: Reference Project Manual and Specifications for 2025 Roofing Replacement at City of East Lansing – City Hall & Hannah Community Center, East Lansing, MI. Replace CP-1 – Index, Notes, And Symbols with appended CP-1 – Index, Notes, And Symbols.
A Addendum #1 Project No. T22096.RFG4 October 2024
Item #12: For Revision: Reference Project Manual and Specifications for 2025 Roofing Replacement at City of East Lansing – City Hall & Hannah Community Center, East Lansing, MI. Replace RP-2.1 – Partial Roof Plan with appended RP-2.1 – Partial Roof Plan.
Item #13: For Addition: Add appended D-22A – Surface Mounted Counterflashing, 1 Piece.
Item #14: For Addition: Reference Project Manual and Specifications for 2025 Roofing Replacement at City of East Lansing – City Hall & Hannah Community Center, East Lansing, MI. Reference P-4; Add the following text after D-22 - SURFACE MOUNTED COUNTERFLASHING – 1 PIECE; “D-22A -
SURFACE MOUNTED COUNTERFLASHING – 1 PIECE”.
Kody Tolliver Jason Bellis
END OF ADDENDUM
PHOTO REPORT – CITY HALL
Photo 1 - Overview Photo 2 - Overview
Overview of Roof Area A1. Overview of Roof Area A1.
Photo 3 - Overview Photo 4 - Overview
Overview of roof level wall detail. Overview of perimeter edge.
A Photo Report Project No. T24099.RFG2 October 2024
Photo 5 - Core Cut Photo 6 - Core Cut
Core cut performed at Roof Area A1:
• EPDM roof membrane
• (2) layers of 1.5” foil faced polyisocyanurate insulation
• Metal deck (sloped)
Core cut performed at Roof Area A1:
• EPDM roof membrane
• (2) layers of 1.5” foil faced polyisocyanurate insulation
• Metal deck (sloped)
Photo 7 - Overview Photo 8 - Overview
Overview of Roof Area A2. Overview of Roof Area A2.
Photo 9 - Overview Photo 10 - Overview
Overview of Roof Area A2. Overview of Roof Area A2.
Photo 11 - Overview Photo 12 - Overview
Overview of roof level wall detail. Overview of perimeter edge.
Photo 13 - Overview Photo 14 - Overview
Overview of Roof Area B. Overview of Roof Area B.
Photo 15 - Overview Photo 16 - Overview
Overview of Roof Area B. Overview of Roof Area B.
Photo 17 - Overview Photo 18 - Overview
Overview of Roof Area C. Overview of Roof Area C.
Photo 19 - Core Cut Photo 20 - Core Cut
Core cut performed at Roof Area C:
• EPDM roof membrane
• 0.25” wood fiber insulation
• 2.75” foam EPS insulation
• Gypsum deck (flat)
Core cut performed at Roof Area C:
• EPDM roof membrane
• 0.25” wood fiber insulation
• 2.75” foam EPS insulation
• Gypsum deck (flat)
Photo 21 - Overview Photo 22 - Overview
Overview of Roof Area C1. Overview of Roof Area C1 (red arrow).
Photo 23 - Core Cut Photo 24 - Core Cut
Core cut performed at Roof Area C1:
• EPDM roof membrane
• 0.25” wood fiber insulation
• 5” Black foam glass insulation
• Metal deck (flat)
Core cut performed at Roof Area C1:
• EPDM roof membrane
• 0.25” wood fiber insulation
• 5” Black foam glass insulation
• Metal deck (flat)
Photo 25 - Overview Photo 26 - Overview
Overview of Roof Area E. Overview of Roof Area F.
Photo 27 - Overview
Overview of Roof Area F.
PHOTO REPORT – HANNAH COMMUNITY CENTER
Photo 1 - Overview Photo 2 - Overview
Overview of Roof Area H. Overview of Roof Area H.
Photo 3 - Core Cut Photo 4 - Core Cut
Core cut performed at Roof Area H:
• Ballast rock
• EPDM roof membrane
• 4” polystyrene insulation
• Built-up roof system
• Gypsum deck (flat)
Core cut performed at Roof Area H:
• Ballast rock
• EPDM roof membrane
• 4” polystyrene insulation
• Built-up roof system
• Gypsum deck (flat)
Photo 5 - Overview Photo 6 - Overview
Overview of the underside of the roof deck. Overview of the underside of the roof deck.
Photo 7 - Overview Photo 8 - Overview
Overview of Roof Area J. Overview of Roof Area J.
Photo 9 - Overview Photo 10 - Overview
Overview of Roof Area J. Overview of Roof Area J.
Photo 11 - Overview Photo 12 - Core Cut
Overview of perimeter edge coping. Core cut performed at Roof Area J:
• TPO roof membrane
• (2) layers of 1.5” polyisocyanurate insulation
• Tectum deck (sloped)
Photo 13 - Overview Photo 14 - Overview
Overview of Roof Area P. Overview of Roof Area P.
Photo 15 - Overview Photo 16 - Overview
Overview of Roof Area P. Overview of Roof Area P.
Photo 17 - Overview Photo 18 - Overview
Overview of perimeter edge coping. Overview of roof level wall termination.
Photo 19 - Roof Hatch Photo 20 - Conduit
Roof hatch to be replaced with new during roof replacement.
Overview of roof top conduit.
Photo 21 - Core Cut Photo 22 - Core Cut
Core cut performed at Roof Area P:
• Ballast rock
• EPDM roof membrane
• (2) layers of 1.5” polystyrene insulation
• Concrete deck (flat)
Core cut performed at area divider between pool area. No pool moisture was observed at the area divider.
Photo 23 - Overview Photo 24 - Overview
Overview of the underside of the roof deck. Overview of the underside of the roof deck.
So lu tio ns fo r t he B ui lt
E nv ir on m en tSM
C am pu s D riv e
• K al am az oo , M
I 4
D un de e R oa d, S te
N or th br oo k, IL
Ai rp or t R oa d, S te
B ut le r, PA
W . T w el ve M ile R oa d, S te
Fa rm in gt on
H ills
, M I 4
D-#
GENERAL PROJECT NOTES INDEX OF DRAWINGSKEY OF SYMBOLS
So lu tio ns fo r t he B ui lt
E nv ir on m en tSM
C am pu s D riv e
• K al am az oo , M
I 4
D un de e R oa d, S te
N or th br oo k, IL
Ai rp or t R oa d, S te
B ut le r, PA
W . T w el ve M ile R oa d, S te
Fa rm in gt on
H ills
, M I 4
KEYED NOTES
Addendum #1
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