Load Tables

The table below provides allowable loads for random length continuous applications and simple spans.

Allowable Total Uniform Roof Load (contd.)

Footnotes:
1. Values followed by (f) are goverened by bending stress. Allowable loads for floors where governed by deflection are half of those listed in the 1/180 column.
2. Bending stress relates to 2-month duration. It is not exceeded when the listed loads are applied based on recognized decking formulas.
3. Span/loads shown assume compliance to layup rules described elsewhere. Longer spans may require specific lengths differing from the standard shipment--consult your Disdero representative.
4. Nominal 5” Fir/Larch will have a MOE of 1.7 x 106 psi unless special arrangements are made prior to manufacture.
5. Comparable values are obtained with Ponderosa Pine face and Douglas Fir/Larch centers and back.

Random Length Continuous-- A random length continuous configuration is applied over three or more spans. It is the most common method of applying Lock-Deck™ decking and the most economical. This configuration allows the use of mixed lengths of material on a variety of span conditions, providing high structural efficiency as well as attractive appearance.

Simple Spans-- This configuration requires specified length decking and provides shorter spans for the same thickness decking than the random length layout.

Sloped Roof Deck -- Load Adjustment Factors (Estimated)

To calculate the allowable load for a sloped roof deck, apply the coefficient for the pitch to the load for a flat roof listed in the Allowable Load table above.

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