Q A RPR BLDG 877.doc

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QUESTIONS & ANSWERS

FA5685-12-R-0011

RPR ROOF Bldg#877 Project No: LJYC 10-1015

Incirlik AB, Turkey

Questions and Answers

Question #1

New 0.70mm thick trapezoidal sheet steel roofing panels to be used as underlying member for new roofing system w/standing seams. Will the trapezoidal sheet steel roofing panels be just galvanized or coil coated?

If it is coil coated, which color will be the panels? and which surface (upper or lower) will be this color?

Answer #1

Lower “Roof Covering” (Metal Decking) is Galvalum finish.

Question #2

Membrane; The specification of the membrane material? Thickness, material type (a kind of breathable membrane)?

Answer #2

Grace Triflex (high strength woven synthetic roofing underlayment coated with a layer of UV stabilized polyolefin); or Grace Ultra—(butyl rubber based adhesive backed by a layer of high density cross laminated polyethylene) are two acceptable underlayments which I know.

Question #3

The thickness of omega shaped top panel supports, and the surface finishing galvanized, painted or not?

Answer #3

Galvanized or Galvalum, 1mm thick (recommendations for that roofing system from roofing supplier.)

Question #4

There isn't any insulation material between the top and lower layers of the roofing panels. Please. clarify.

Answer #4

No, only the membrane.

Question #5 Sheet Number AD3; Section A AD2-AD3 mentions that existing roof structures to remain to be cleaned, primed and painted with synthetic paints, color:

Dark Brown

Sheet Number AD3; Section B AD2-AD3 mentions that existing roof structures to remain as they are. Pls. clarify. Which one is correct? Will all the roof structures be painted or not?

Answer #5

All existing structure to be cleaned, primed and painted.

Question #6

Dwg. A5 shows that there is only membrane between the two roof covering layers. Will there be any other insulation such as rockwool or glasswool? If not; please can you confirm?

Answer #6

No other insulation is being installed between the metal roofing layers.

Question #7 What is the property of the membrane between two roof layers? Please can you provide more detailed technical information about the membrane?

Answer #7

Grace Triflex high strength woven synthetic roofing underlayment coated with a layer of UV stabilized polyolefin; or Grace Ultra—butyl rubber based adhesive backed by a layer of high density cross laminated polyethylene are two acceptable underlayments which I know.

Question #8 There are two roof coverings, the upper one is painted but the lower one is not indicated? Please can you clarify the finish coat of bottom layer roof covering?

Answer #8

Lower “Roof Covering” (Metal Decking) is Galvalum finish, Question #9

What is the pressure type of the PVC drainage pipe. Are they all 10 Atm. or 6 atm pressure capacity? Please can you give more detailed information for the all dimensioned PVC drain pipes?

Answer #9

10 ATM but the base standard is Corrugated steel sn8 pipe, a change will be issued to correct from PVC to Steel pipe for this project.