Q A_22-25.docx

MAHG141076 Repair Roof Stennis Hall B1002

RFI 5

May 8, 2015

22. Could you please tell us the ceiling tile manufacturer's name and type for the 250 tiles that are required to be replaced by the specifications?

A: corridors:

Acoustic 1 - 2' x 2' x 1 1/2", square lay-in, white, non-directional, >.90 nrc, sag-resistant, class a fire rating, Equal to Armstrong 3159 Optima open plan. Provide sample for approval prior to installing.

Classrooms:

Acoustic 2 - 2' x 2' x 3/4", square lay-in, white, non-directional, >.70 nrc, sag-resistant, class a fire rating, Equal To Armstrong 574 Cirrus square lay-in. Provide sample for approval prior to installing.

23. Is there any instruction on preparatory work required on the metal tin houses, expansion joints and metal coping?

A: Replace damage material as indicated in the drawings. Prep all new material according to the roofing system manufacturer’s recommendations and instructions. This usually includes removing all dirt to achieve proper adhesion and priming where necessary.

24. In responce to question 19 (RFI4): Our test core that showed 10 inches of insulation was located behind the metal tin house that is opposite of the parking lot where the site visit transportation bus was parked.

A: This does not appear to be a typical condition. 3 additional cores were taken and 5 1/2” of insulation and roof system were consistently found over the corrugated metal decking. Cores were taken 4’ from the parapet, at the midpoint between the parapet and roof drains, and 4’ from the roof drains.

25. Will the SealoFlex system in question 18 (RFI 4) be considered an equal?

A: No