Question_and_Answers_for_Repair_Roof_Bldgs_5.docx
DOCX document 14 KB Posted
- Solicitation number
- W91242-19-B-5010
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Questions & Answers for Repair Roof Building 5 & 51
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Other files
| File | Type | Posted |
|---|---|---|
| W91242-19-B-5010_Amendment_0001.pdf | ||
| extraordinary-firestone-tpo-winsome-firestone-tpo-firestone-tpo-935x722.jpg | JPG image | |
| SOW_FJRP192520_-_Repair_Roofs_Bldg_51_+_5_complete_R2.pdf | ||
| Pre-Bid_Slides_W91242-19-B-5010_[Autosaved].ppt | PPT presentation | |
| Pre-bid_Sign-in_Sheet.pdf | ||
| Attachment__1A_Drawings.pdf | ||
| Attachment__1B_Drawings.pdf | ||
| Attachment_4.pdf | ||
| Attachment_5.docx | DOCX document | |
| W9122-19-B-5010_Final.pdf | ||
| Attachment__1C_Drawings.pdf | ||
| Attachment_3.pdf | ||
| Attachment_2.xlsx | XLSX spreadsheet |
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Question and Answers for Repair Roof Bldgs 5 & 51
Amendment 2 shows a Firestone 30 year detail of a roof edge gutter with ultra-ply TPO coated metal. There is no gutter on either building 5 or 51. It also shows a Platinum TPO roof system fully adhered in amendment 2 but the Scope of work call for a rhino bond 60 mil TPO roof system. What is the intent and design of basis? 30 year system? Fully adhered?, Rhinobond?, Manufacturer?
Response: Statement of work calls for 60 mil Rhino-bond PVC membrane roof system with 20 year manufacture warranty. Typical manufacturers are Firestone, JM, etc. – if GC is selected this will be provided to the Government via submittal. Detail for coping is a typical detail but needs to be new ES-1 coping. Agreed there are no gutter systems on either building.
Building 5
1. . According to the Engineer during the site visit, The lower roof hold water but the specifications did not reference a tapered insulation system or crickets between the roof drains. Please clarify if we need to add.
Response: GC should use proper means and methods to ensure proper drainage of the roof system.
1. Please clarify the type of roof edge to be installed and provide a detail; if possible. Are we to provide a standard gravel stop or build a raised parapet wall and provide a coping system?
Response: Bldg. 5 coping needs to be an ES-1 (raised parapet style, but not wall) not taper coping (see attachment for bldg. 5). Someone (on a previous roof job years ago) had ran the TPO roof membrane over the existing taper coping & gravel stop which is not the proper way to install this – when this is replaced we do want ES-1 raised parapet style coping like the SOW states. I’ve include at Firestone detail for more info but will have to be adapted to work with PVC membrane.
1. Are we to furnish and install a Retrofit roof drain at the existing drains. The existing drains do not have a trash strainer or clamping ring.
Response: Yes
1. Please advise if we are to install walkway at the existing locations?
Response: No
Building 51
1. Please advise if we are to replace the wall expansion joint at the rear wall or if it will remain in place?
Response: No photos attached.
1. Please clarify if we are to furnish and install tapered insulation crickets between the roof drains on the Support Shops below the Hanger roof.
Response: Provide details/pictures.
1. Please advise if we are to install walkways at the existing locations?
Response: No
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