Installation Guide

33
DECKING
At a 60° angle, maximum
joist spanning is 2"
(5.1 cm) less than listed in
the chart below.
60°
Perpendicular to joists.
See chart below.
90°
At a 45° angle, maximum
joist spanning is 4"
(10.2 cm) less than listed
in the chart below.
45°
At a 30° angle, maximum
joist spanning is 1/2 of
the distance listed in the
chart below.
30°
CODE COMPLIANCE
Joist Spanning for Decking
Trex
®
decking meets all applicable national model
building codes. The joists must be spaced on center
according to the chart below. Be sure that joists are
level and plumb. Trex decking must span at least three
joists. For heavy items such as hot tubs, planters,
etc., consult a local building engineer or inspector
for span recommendations. If you want to minimize
the appearance of joists through the spaces between
boards, paint the top of your joists black.
Code Listings
Trex complies with major model building codes and
has been evaluated by the International Code Council
evaluation service.
Trex Complies with these Model Building
Codes:
» 1997 Uniform Building Code (UBC).
» 1999/2009 Standard Building Code (SBC).
» 2006/2009 International Residential Code (IRC).
» 2006/2009 International Building Code (IBC).
» International One and Two Family Dwelling Code 1998.
» BOCA
®
National Building Code/1999 (BNBC).
» Trex decking is included in the National Research
Council of Canada’s Registry of Product Evaluations.
See trex.com for CCMC Evaluation Report 13125-R.
For an Materials Safety Data Sheet (MSDS), please visit
trex.com
Trex Transcend
®
and Trex Escapes
®
Trex Transcend
®
and Trex Escapes
®
are compliant with the Wildland-Urban Interface, California State and San Diego County
fire codes. For more information, e-mail [e-mail] or call 1-800-BUY-TREX (1-800-289-8739).
ADJUST JOIST SPANNING TO ACCOMMODATE
ANGLED DECKING PATTERNS*
TREX DECKING SPAN CHART (On Center)
Commercial Decks,
Boardwalks and Marinas
Residential Decks, Light Duty Docks,
Residential/Day care Playground
Decking Loading 100psf (4826 Pa) 100psf (4826 Pa) 200psf (9576 Pa)
1" (2.5 cm) Boards (including Porch),
and .875" (2.2cm) Select Boards
2" x 6" (5.1 cm x 15.2 cm) Boards 24" (70 cm) 24" (70 cm) 16" (40.6 cm)
Maximum Railing Span for all Applications (on center of posts)
Transcend and Select Railing 96" (244 cm) on center
Designer Railing/
Traditional Railing
TREX RAILING SPAN CHART
16" (40.6 cm)
72" (183 cm) on center
16" (40.6 cm) 12" (30.5 cm)