Information pertaining to principles of design, advantages and limitations, construction details, and structural requirements for the plank-and-beam method of framing, including span and load tables.
Generic load tables for wood beams and wood columns and generic span tables for high capacity floor joists and for plank and laminated floors and roofs.
No. An engineer or architect should design cantilever members. Design of cantilever beams involves many variables including load, cantilever span and interior or back span. Often the load is not a single uniform distribution over the length of the member, and other additional loads are present, such as point loads at the end of the…
Wood members that are protected from direct moisture in building construction reach an equilibrium moisture content below 19%, which is considered dry service conditions. Design values assigned to lumber and engineered wood products in the AWC National Design Specification® for Wood Construction (ANSI/AWC NDS®) and the NDS Supplement are based on the assumption of dry service conditions. When wood…
Floor joist span tables are tabulated based on allowable deflection limits of L/360. Floor live loads range from 30 psf for sleeping areas to 40 psf for other occupancies. Ceiling joist span tables are tabulated based on allowable deflection limits of L/240. Typically a user will know the span and desired spacing for a given…
Beam load tables in WSDD are tabulated based on spans from 4 to 32 feet and for lumber sizes from 2×4 to 24×24 inches. Typically a user will know the span and load for a given application. The user can select a species, size, and grade for trial use. Using the Design Values for Wood Construction Supplement, the…
Beam load tables in WSDD are tabulated based on spans from 4 to 32 feet and for lumber sizes from 2×4 to 24×24 inches. Typically a user will know the span and load for a given application. The user can select a species, size, and grade for trial use. Using the Design Values for Wood Construction Supplement, the…
Chapter 5 of the NDS contains design information for glued-laminated timber.
Chapter 5 of the NDS contains design information for glued-laminated timber.