National Design Specification for Wood Construction by -

By -

This 4 quantity set comprises the code-recognized nationwide layout Specification (NDS) for wooden development (2012 variation) with statement and complement: layout Values for wooden building.

The 2012 wooden layout package deal brings jointly all required parts for layout of wooden buildings in a single accomplished rfile. It contains layout details and examples for wind and seismic stipulations, sawn lumber, structural glued laminated trees, structural-use panels, shear partitions and diaphragms, poles and mounds, I-joists, structural composite lumber, structural connections (nails, bolts, screws), steel plate attached wooden trusses, and pre-engineered steel connectors. The wooden layout package deal additionally comprises: 2008 distinct layout Provisions for Wind and Seismic (SDPWS) with statement and ASD/LRFD guide for Engineered wooden development.

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Additional resources for National Design Specification for Wood Construction Supplement: Design Values for Wood Construction

Sample text

STRESS-RATED BOARDS. 3, Stud, Construction, Standard, Utility, and Clear Structural grades as shown in the 2" to 4" thick categories herein, when graded in accordance with the stress-rated board provisions in the applicable grading rules. Information on stress-rated board grades applicable to the various species is available from the respective grading rules agencies. Information on additional design values may also be available from the respective grading rules agencies. 3. When individual species or species groups are combined, the design values to be used for the combination shall be the lowest design values for each individual species or species group for each design property.

When individual species or species groups are combined, the design values to be used for the combination shall be the lowest design values for each individual species or species group for each design property. AMERICAN FOREST & PAPER ASSOCIATION 4 REFERENCE DESIGN VALUES only to be used with the 2005 NDS® and Wood Structural Design Data (Tabulated design values are for normal load duration and dry service conditions, unless specified otherwise. ) 2005 REFERENCE DESIGN VALUES 40 Table 4C Adjustment Factors only to be used with the 2005 NDS® and Wood Structural Design Data Flat Use Factor, Cfu Bending design values adjusted by size factors are based on edgewise use (load applied to narrow face).

For 2" to 4" thick lumber the DRY dressed sizes shall be used (see Table 1A) regardless of the moisture content at the time of manufacture or use. In calculating design values, the natural gain in strength and stiffness that occurs as lumber dries has been taken into consideration as well as the reduction in size that occurs when unseasoned lumber shrinks. The gain in load carrying capacity due to increased strength and stiffness resulting from drying more than offsets the design effect of size reductions due to shrinkage.

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