CEMP-ET
TI 809-53
01 May 1999
8-3.
DESIGN CONSIDERATIONS.
a. NRCA Details. Typical details for all steep roofing types are provided in NRCA Steep Roofing
Manual (Volume 2, the NRCA Roofing and Waterproofing Manual-fourth edition).
b. Decking. The APA Design/Construction Guide explains veneer grades, exposure durability,
recommended spans, diaphragm information, as well as fire and wind resistant construction for
plywood and non-veneer decks.
c. Asphalt Products. The Residential Asphalt Roofing Manual by ARMA provides excellent
design information for asphalt shingles and roll roofing.
d. Tile. The National Tile Roofing Manufacturers Association also has a manual that is helpful
when designing with tile. Also useful and current are the Concrete and Clay Roof Tile Installation
Manual; FRSA/NTRMA Minimum Standards; the Clay Roof Tile Manual from the Western States
Roofing Contractors Association (WSRCA); and the National Tile Roofing Manufacturers Association
(NTRMA) Concrete and Clay Tile Roof Design Criteria Manual for Snow and Ice Regions.
e. Slate. Slate Roofs, by Vermont Structural Slate Co., Inc., provides details and design
information on slate. (The National Slate Association no longer exists.) Note that only copper, stainless
steel, and brass fasteners are recommended, never iron or galvanized.
f. Metals. The Architectural Sheet Metal Manual from SMACNA contains many details for
flashings, valley treatments and drainage.
g. Wood Shingles and Shakes. The Cedar Shingle and Shake Design and Application Manual
provides excellent information on wood shingles and shakes.
h. Military References/Guide Specifications. Refer to:
TM 5-805-14 Roofing and Waterproofing 5/93
CEGS 07310 Slate
CEGS 07311 Strip Shingles
CEGS 07320 Clay Tile Roofing
CEGS 07412 Nonstructural Metal Roofing
i.
ASTM Specifications
C408
Roofing slate
C1167
Clay roof tile
D225
Asphalt shingles (organic felt)
D226
Asphalt-saturated (organic felt) used in roofing and waterproofing
D249
Asphalt roll roofing (organic felt) surfaced with mineral granules
D371
Asphalt roll roofing (organic felt) surfaced with mineral granules;
wide selvage
D1970
Self-adhering polymer modified bituminous sheet materials used
as steep roofing underlayment for ice dam protection
D3018
Class A asphalt shingles surfaced with mineral granules
D3909
Asphalt roll roofing (glass felt)
D3462
Asphalt shingles (glass felt)
D4869
Asphalt-saturated (organic felt) shingle underlayment
D6162
SBS sheets with combination polyester/glass reinforcements
D6163
SBS sheets with glass reinforcements
D6164
SBS sheets with polyester reinforcements
8-5
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