RFB935700-01 - MPCF IPI Roof Replacement - Addendum 2.pdf
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- Attached to
- DOC MPCF IPI Roof Replacement
- Solicitation number
- RFB935700-01
- Issued by
- Henry County, Iowa
About this file
This addendum to the Request for Bids (RFB935700-01) issued by the Iowa Department of Administrative Services pertains to the DOC MPCF IPI Roof Replacement project at Mt. Pleasant Correctional Facility. The addendum, effective February 15, 2024, modifies the original bid documents and must be acknowledged by all bidders to avoid disqualification. The primary modification extends the construction schedule from the original timeframe to April 15, 2024 through November 29, 2024, with substantial completion on November 29, 2024 and final completion/closeout by December 31, 2024. The addendum also clarifies technical specifications for structural retrofit roof sub-framing, requiring pull-out test data and on-site verification of structural attachments for wind uplift resistance, with tests conducted by the purlin manufacturer or delegated authority at field, perimeter, and corner locations.
The addendum approves three substitute material options for the project: Berridge Manufacturing Zee Lock and Peterson PAC-CLAD Tite-Loc Plus for standing seam metal roofing, and Top Hat Zee-Strip for structural retrofit roof sub-framing. Additionally, drawing modifications require bidders to provide an 18-gauge metal pan to infill the opening where an existing exhaust pipe will be removed from the roof. The specifications also mandate submission of current test equipment calibration records and comprehensive documentation of on-site field conditions and pull-out resistance results. These modifications supersede any conflicting provisions in the original Request for Bids documents.
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Text version
ADDENDUM #2
Project Name:
DOC MPCF IPI Roof Replacement
DAS#9357.00
RFB935700-01
Addendum #2
Dated: February 15, 2024
This Addendum forms a part of the Request For Bids documents. This Addendum supersedes and supplements all portions of the original Request For Bids with which it conflicts.
ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE REQUEST FOR PROPOSAL. FAILURE TO
DO SO MAY SUBJECT TO DISQUALIFICATION.
1. Questions:
a. Q Can the length of the construction schedule be extended?
A Yes, The construction schedule can be changed to April 15, 2024 to November 29, 2024.
Substantial completion will be November 29, 2024 with final completion / closeout December 31, 2024.
2. Specifications:
a. 13 3421 Structural Retrofit Roof Sub-framing. Add: 1.4.C.8. Include Pull Out Test data results to confirm structural attachment for wind uplift.
b. 13 3421 Structural Retrofit Roof Sub-framing. Add:
1.4.E. Pull Out Tests: Conduct on-site pull-out tests to verify attachment to existing roof purlins.
1. Tests to be conducted by purlin manufacturer or delegated authority.
2. Submit number of tests, locations, to include field, perimeter and corner test locations.
3. Submit test results documenting all on-site field conditions and pull-out resistances.
4. Submit current test equipment calibration records.
3. Substitution Requests:
a. 07 6100 Standing Seam Metal Roofing. Berridge Manuf. Zee Lock is approved.
b. 07 6100 Standing Seam Metal Roofing. Peterson PAC-CLAD Tite-Loc Plus is approved.
c. 13 3421 Structural Retrofit Roof Sub-framing. Top Hat Zee-Strip is approved.
4. Drawings:
a. On the roof plan where the exhaust pipe is removed, provide an 18 ga. Metal pan to infill the opening in the existing roof.
Attachments: None.
END OF ADDENDUM
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