MIL-HDBK-1001-5 Roofing And Waterproofing S/S By Mil-Std-3007This handbook sets forth guidelines for design of roofing, LAYOUT 1 and waterproofing systems for building construction. It covers design of new low-slope and steep roof systems, reroofing of existing buildings, and waterproofing, and dampproofing systems.

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MIL-HDBK-1001/5A

13.3.4    Drain Tile.  Waterproofed walls should be blanketed with coarse rock, underlain at foundation level with perforated drain tile connected to adequate sumps or existing storm water systems.  Drain tile must be sloped to outlets.  The top of the drain tile should not be higher than 2 inches (51 millimeters) below the bottom of the interior floor slab.

13.4      Design Requirements

13.4.1    Slope of Concrete Slabs.  All horizontal surfaces

should have slope of 1/4 to 1/2 inch per foot (2 to 4 percent) in

the monolithic pour if possible.  Dead level slabs are often

unavoidable, however.

13.4.2    Walls.  Walls may require nailers to secure the top of the membrane 6 to 8 inches (152 to 203 millimeters) above grade. Horizontal nailers should be provided at 6-foot (1829-millimeter) elevation intervals, set in a bed of bituminous material and waterproofed with additional layers of fabric and bituminous cement.  Plies of felt or fabric should run vertically.

13.4.3    Expansion Joints.  These joints must receive preformed neoprene rubber gaskets, properly flashed.

13.4.4    Membrane Selection.  The membrane may include use of felts, fabric and/or proprietary-coated fabric set in hot or cold bituminous material or proprietary adhesive.  System should be multiplied, with sufficient plies to withstand the anticipated hydrostatic pressure.  The following table offers guidelines for determining the number of felt and/or fabric plies and moppings needed to resist different hydrostatic pressures:

If single-ply sheet-applied membranes, such as PVC, neoprene, butyl, EDPM, Hypalon, etc., are elected, great care must be taken in the provision and testing of the lap seams before covering or back filling.  All systems must be protected

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