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WOOD

American Society of Agricultural and Biological 2306.1.3 Treated wood stress adjustments. The allow-
Engineers. able unit stresses for preservative-treated wood need not
ASABE EP 484.2 Diaphragm Design of Metal-clad, Post- be adjusted for treatment, but are subject to other adjust-
Frame Rectangular Buildings ments.
ASABE EP 486.2 Shallow Post Foundation Design The allowable unit stresses for fire-retardant-treated
wood, including fastener values, shall be developed from
ASABE 559.1 Design Requirements and Bending an approved method of investigation that considers the
Properties for Mechanically Laminated effects of anticipated temperature and humidity to which
Columns the fire-retardant-treated wood will be subjected, the type
of treatment and the redrying process. Other adjustments
APA—The Engineered Wood Association.
are applicable except that the impact load duration shall
ANSI 117 Standard Specifications for Structural Glued not apply.
Laminated Timber of Softwood Species
2306.1.4 Lumber decking. The capacity of lumber deck-
ANSI A190.1 Structural Glued Laminated Timber ing arranged according to the patterns described in Section
Panel Design Specification 2304.9.2 shall be the lesser of the capacities determined
Plywood Design Specification Supplement 1— for flexure and deflection according to the formulas in
Design & Fabrication of Plywood Curved Panel Table 2306.1.4.
Plywood Design Specification Supplement 2— TABLE 2306.1.4
Design & Fabrication of Glued Plywood-lumber Beams ALLOWABLE LOADS FOR LUMBER DECKING
ALLOWABLE AREA LOAD a, b
Plywood Design Specification Supplement 3—
Design & Fabrication of Plywood Stressed-skin Panels PATTERN Flexure Deflection
Plywood Design Specification Supplement 4—
 2
Design & Fabrication of Plywood Sandwich Panels 8F b d 384Ed 3
Simple span  = --------------   = ------------------------
2
Plywood Design Specification Supplement 5— b l 6 5l 4 12
Design & Fabrication of All-plywood Beams
EWS T300 Glulam Connection Details 8F b d 185Ed 3
 2
Two-span continuous  = ---------------   = ------------------------
2
EWS S560 Field Notching and Drilling of Glued b l 6 l 4 12
Laminated Timber Beams
EWS S475 Glued Laminated Beam Design Tables  2
Combination simple- and 8F b d 131Ed 3
EWS X450 Glulam in Residential Construction two-span continuous  b = ---------------   = ------------------------
4
2
12
l 6
l
EWS X440 Product and Application Guide: Glulam
EWS R540 Builders Tips: Proper Storage and Han-
 2
dling of Glulam Beams Cantilevered pieces  20F b d 105Ed 3
intermixed b = ------------------   = ------------------------
4
12
2
Truss Plate Institute, Inc. 3l 6 l
TPI 1 National Design Standard for Metal
Plate Connected Wood Truss Construc- Controlled random layup
tion
 2
West Coast Lumber Inspection Bureau 20F b d 3
Mechanically laminated  = -----------------   = 100E d
------------------------
AITC 104 Typical Construction Details decking b 2 4 12
3l 6 l
AITC 110 Standard Appearance Grades for Struc-
tural Glued Laminated Timber
 2
20F b d 100E d 3
AITC 113 Standard for Dimensions of Structural 2-inch decking  = -----------------   = ------------------------
b
4
2
Glued Laminated Timber 3l 6 l 12

AITC 119 Standard Specifications for Structural  2
Glued Laminated Timber of Hardwood 3-inch and 4-inch decking  = 20F b d 116E d 3
-----------------   =
------------------------
Species b 3l 6 l 4 12
2

AITC 200 Inspection Manual
For SI: 1 inch = 25.4 mm.
2306.1.1 Joists and rafters. The design of rafter spans is a.  b = Allowable total uniform load limited by bending.
permitted to be in accordance with the AWC STJR.  = Allowable total uniform load limited by deflection.

b. d = Actual decking thickness.
2306.1.2 Plank and beam flooring. The design of plank l = Span of decking.
and beam flooring is permitted to be in accordance with F  = Allowable bending stress adjusted by applicable factors.
b
the AWC Wood Construction Data No. 4. E = Modulus of elasticity adjusted by applicable factors.
502 2018 INTERNATIONAL BUILDING CODE ®
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