asbestos-cement panels shall be drilled. frame, supports, stairs, etc., 8-17. GLASS AND GLAZING: Wood screen shall be as detailed. Openings, for the most part, will not be glazed. Where glazed opening are called for on the drawings, install glass types noted in accordance with details shown. Sizes for glass shall be taken from the actual frames &nd sash; sizes shown are nominal. Except as otherwise shown or hereinafter specified, flat glass shall conform to the requirements of Federal Specification No. DD-G-45la, of types as noted, or directed by the Engineer. a. Polished Plate Glass: Polished plate glass shall be Type A, glazing quality. Nominal thickness, except where ‘otherwise indicated on the drawings, shall be 1/h-inch. b. Clear Window Glass: Clear window glass, except where specified otherwise, double strength, "A" quality. shall be Type B, c. Wire Glass: Wire glass shall be Type E, and shall be 1/f-inch thick, clear, polished both sides. All glass, except as otherwise indicated, shall be set in putty. Wooden stops shall be bradded and metal stops secured with screws. All glass shall be back-puttied and have excess putty cut off flush with top of stophead. 8-18. INSULATION: Contractor shall furnish and install all insulating materials in the areas so scheduled. Except as otherwise shown or herein specified insulation shall be as follows: a. Insulating batts shall conform to Federal specification HH-1-52¢ for Type I, Class B. b. Insulating Roll Blankets shall be as specified in paragraph “a” preceding except that insulation shall be in the form of a continuous roll. Batts and blankets shall be of the thicknesses shown and shall be of appropriate sizes to fit between walls, joists as the case may be. studs or ceiling Batts shall be securely stapled to the studs or joists with the moisture resistant paper toward the exterior or "hot" side. (Refer to "Painting" section for vaporseal insulation). 8-14