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Page 4 of 8 ESR-1190 <br /> TABLE 2—MAXIMUM STAIR TREAD SPANS <br /> DECK BOARDS USED AS STAIR TREADS MAXIMUM SPAN(in)1•2 <br /> Trex 5/,x 6 Deck Board 10.5 <br /> Trex 2 x 6 and 2 x 8 Deck Boards 12.0 <br /> For SI: 1 inch=25.4 mm; 1 lbf/ft2=47.9 Pa. <br /> 'Maximum span is measured center-to-center of the supporting construction. <br /> 2 5/4 x 6 Deck Boards are based on a two-span condition,and 2 x 6 and 2 x 8 Deck Boards are based on a three-span condition. <br /> TABLE 3—TREX®DECKING SPAN CHART'•'•3 <br /> MEMBER SIZE MAXIMUM UNIFORM LIVE LOADING <br /> 100 psf I 200 psf <br /> Maximum Member Span Between Supports <br /> 5/4®6 16 inches 12 inches <br /> 2 x 4,2 x 6,2 x 8 20 inches 16 inches <br /> 3 x 6 Not determined 24 inches <br /> HS24 Marine Grade <br /> 2 x width 24 inches 16 inches <br /> For SI: 1 inch=25.4 mm, 1 psf=48 Pa. <br /> 'Tabulated span values are for Trex®members used as planking(flatwise bending).The values are permitted to be used in lieu of application- <br /> specific calculations.Other applications or loading conditions require submittal of design calculations,showing compliance with this evaluation <br /> report,to the code official for approval. <br /> 'Trex®members shall be supported by a minimum of three joists and shall be fastened at each joist. <br /> 'Tabulated spans are based on a deflection limit of L1360. <br /> TABLE 4—TREX®RAIL ASSEMBLIES' <br /> COMPONENT INSTALLATION REQUIREMENTS',3 <br /> Baluster Trex 2x2 BalusterTM spaced a maximum of 51/,inches on center <br /> (parts fabricated or milled from other Trex®profiles into 3 <br /> baluster shapes are not permitted) Trex 1 /e"Square Baluster spaced a maximum of 5 inches on center <br /> Top plate Tree 2x6,5/4x6,2x8,or 2x 10 <br /> Top rail Trex®2x4,5/4x6,2x6,2x8 or 2x10 <br /> Railings Trex®2x4,5/4x6,2x6,2x8,or 2x10. Bottom rail shall be supported and attached <br /> Bottom rail to the deck at a maximum of 18 inches(457 mm)on center.Bottom rail is not <br /> required when balusters are attached directly to the deck structural members. <br /> Trex 4x4 Rail PostTM or other approved post material,such as solid-sawn <br /> Posts lumber or steel. Maximum post spacing shall be 6 feet on center.Posts shall <br /> not be notched. <br /> For SI: 1 inch=25.4 mm, 1 ft=0.3 m. <br /> 'Evaluation of framing members supporting the guardrail assembly is outside the scope of this evaluation report. <br /> 'Standard guardrail components shall be connected as follows: <br /> a. Post-to-framing connection:Minimum two'/zinch-diameter(13 mm)machine bolts,51/,inches(130 mm)apart,each post. <br /> b. Baluster-to-top-rail connection: Minimum two No. 8 by 21/2-inch-long (64 mm)screws, 2 inches (51 mm)apart vertically, through each <br /> baluster. <br /> c. Top-rail-to-top-plate connection:Minimum two No.8 by 21/2-inch-long(64 mm)screws spaced 12 inches(305 mm)on center. <br /> d. Top-rail-and top-plate-to-post connection:Minimum two No.8 by 3-inch-long(76 mm)screws,2 inches(51 mm)apart,into each post. <br /> 3The minimum height of the guardrail assembly shall be 42 inches(1067 mm)from the deck boards.The maximum opening under the bottom <br /> rail shall be 3 inches(76 mm),except for the SBC,where the maximum opening under the bottom rail shall be 2 inches(51 mm). <br />