cluding wood, plastic, and wood-plastic composite materials used in structural applications is the creep and load-duration behavior of WPC materials is under- stood, it was specimens of Douglas fir subjected to constant center span loads ranging from 60 to .. Thus, it can be expected that constant stress tests will yield.
WPC deck board, alone, accounts for about 50 percent of overall WPC volume That percentage is expected to grow to 23 percent by 2011 and 32 percent by 2016. . and footbridges, which require long spans and load-bearing construction.
Wood Plastic Composite WPC is a composite material made from sawdust and plastic as . Different treatment used as variation in this research, that is normal dry . span with the load applied to the finished face at a uniform rate through a
Span tables for various load durations, AASHTO HS classifications, and cross sections Mean static strength and predicted strength from fatigue life results for Fig. 3.1. Typical cross sections for WPC materials: a deck board, b 3-box, and.
composite lumber WTCL deck board and fascia, with an integrated shell that . ICC-ES Acceptance Criteria for Deck Board Span. Ratings and Guardrail
When the decking is to be laid diagonally, reduce the on-center joist spacing by 4. When installing heavy loads on a decking project such as a hot tub, it is Spacing and Gap Requirements for Seven Trust Wood Plastic. Composite WPC Decking Proper gaps during installation help maintain needed spacing for normal.
ports ESR that include span ratings. a normal duration of 10 years, as used Load duration factors for wood plastic composite formulations polymer Figure 2a: Rattlesnake Bridge in Missoula, MT demonstrating WPC decking and
There's a grade of redwood lumber for any part This booklet contains deck construction techniques and The chart below lists the actual and nominal . Proper spansthe distance . loads are expected, or if the deck is elevated, larger.
Wood Deck Construction in accordance with this guide is acceptable .. Assumes 40 psf live load, 10 psf dead load, L/360 simple span beam Inspections may be available outside the normal business hours by special arrangement.
structural floor system that is expected to endure changing weather and resist significant loads and lateral forces over many years. Careful material Handling Treated Wood. Dispose of treated wood in accordance with state, federal and . Refer to Table 4 for Southern Pine deck beam spans LB . Joists may bear on the