Installation Guide

13
GENERAL INFORMATION
12
GENERAL INFORMATION
13
PHYSICAL AND MECHANICAL PROPERTIES FOR TREX ACCENTS
®
,
BRASILIA
®
, CONTOURS
®
, AND ORIGINS
®
GLOSSARY OF TERMS
Baluster One of a number of closely spaced supports for a railing.
Baluster Spacer A piece that snaps into top and bottom rail that gives precise spacing to the balusters.
Bird’s Mouth Gasket A 45° corner cut gasket to be used when attaching railing to the corner of a 4" x 4"
(10.2 cm x 10.2 cm) post sleeve.
Bump Stop Tab Part of the connector clip and allows for 1/4" (0.6 cm) spacing between
decking bo
ards.
Carriage Bolt A bolt with a rounded head and a square shoulder under the head to
prevent turning during installation.
Connector Clip Hidden fastener used between deck boards to secure positioning.
Fascia
Horizontal trim board used to cover rim and end joists. May also be used for stair risers.
Foot Block Provides support for the bottom rail and gives a finished appearance.
Joist A horizontal structural pressure-treated board that runs from wall-to-wall, wall-to-beam,
or be
am-to-beam to support the deck floor and decking materials.
Lag Bolt A large metal fastener with a hex head and screw threads that drive it into the wood.
Ledger Board A beam supporting one end of the joists.
Nosing The rounded front edge of a stair tread.
Pan-head Screw Self-tapping screw with W-cut design and slightly rounded head.
Post Sleeve Formed sleeve that fits over a standard pressure-treated 4 x 4 post.
Post Sleeve Cap Attractive flat or pyramid shaped cap to place on top of post sleeve.
Post Sleeve Skirt Decorative skirt that surrounds the bottom of the post and rests on surface of deck.
Rail Gasket A gasket used to fill the gap between the railing and post.
Railpost
™
A solid 4" x 4" (10.2 cm x 10.2 cm) Trex post used in conjunction with Trex Designer Series
R
ailing
®
or Trex Traditional Railing.
Railpost Cap
A
ttractive flat or pyramid shaped cap to place on the top of the railpost.
Railpost Skirt
D
ecorative skirt that surrounds the bottom of the railpost and rests on the surface of
the deck.
Rail Support Bracket (RSB)
Inno
vative bracket designed for horizontal, angled, and stair railing installations.
Rim Joist
A
joist on either side or the end of the deck. May have stairs attached and typically
opposite of the ledger board.
Riser
The v
ertical board nailed to a stringer.
Scarf Cut
A
joint used to join two pieces of decking end-to-end, usually cut at a 45° angle.
Screw Plug
A
small plug to cover a screw.
Self-tapping Screw
A
fastener that taps and drills its own hole and does not require a pre-drilled hole.
Shim
A
wedge that is placed between two surfaces to fill in the gap.
Stair Tread
St
eps or stairway boards that are the steps.
Start Clip
Metal clip
s used at the end of decking boards to secure them in position.
Stringer
The s
tructural member in a stairway that supports the treads and risers.
Tempered Glass
A
safety glass that is four to five times stronger than standard glass made by a process
of extreme heating and cooling.
Toenailing
A
ttaching two pieces of decking together by driving a nail at an angle through one piece
into the other.
Universal Fastener
Plas
tic 1/4" (0.6 cm) self-gapping hidden fastener that has increased durability and
allows for easier and faster installation than traditional fasteners.
Wall Return Fitting
A
fitting that can attach directly to wall or post.
Weather Stripping
A
self-adhesive strip applied to the glass panel option to create a tight fit with top and
bottom rails.
Bump Stop Tab
Abrasion Resistance
Hardness
Self-Ignition Temperature
Flash-Ignition Temperature
Flame Spread (a) [Fire Defense]
™
Water Absorption (sanded surface)
24 hr. immersion
Water Absorption (unsanded surface)
24 hr. immersion
Typical Trex
®
Values for Coefficient of Thermal Expansion/Contraction
(36" (91.4 cm) long samples)
ASTM D2394
ASTM D143
ASTM D1929
ASTM D1929
ASTM E84
ASTM D1037
ASTM D1037
DESIGN VALUES
550 psi (3.79 Mpa)
625 psi (4.31 Mpa)
250 psi (1.72 Mpa)
200 psi (1.38 Mpa)
250 psi (1.72 Mpa)
100,000 psi
(689.48 Mpa)
.01 wear/1000 revs.
562 kg (5 kn)
743°F (395°C)
698°F (370°C)
80 [40]
4.3%
1.7%
TEST METHOD VALUES
163 lbs/in (1.12 Mpa)
558 lbs/in (3.85 Mpa)
0.53/0.55
0.59/0.70
0.70/0.75
Rating = No Decay
Rating = 9.6
0.91 to 0.95
ULTIMATE (TYPICAL) VALUES
1806 psi (12.45 Mpa)
1944 psi (13.40 Mpa)
854 psi (5.89 Mpa)
561 psi (3.87 Mpa)
1423 psi (9.81 Mpa)
175,000 psi (1206 Mpa)
1.57 BTU-in/hr-ft @85°F (.0023 W/cm/°C)
Pass
Thermal
Moisture
Nail Withdrawal (c)
Screw Withdrawal (c)
Static Coefficient of Friction - Dry (d)
Static Coefficient of Friction - Dry (d)
Static Coefficient of Friction - Wet (d)
Fungus Resistance (White & Brown Rot)
Termite Resistance (e)
Specific Gravity (typical)
Compres
sion Parallel (f )(g)
Compression Perpendicular (f )(h)
Tensile Strength (f )
Shear Strength (f )
Modulus of Rupture (f )
Modulus of Elasticity (f )
Thermal Conductivity
Leachate (i)
Width
Length
Typical Trex Values
for Long-Term Water
Immersion
(36"/91.4 cm long samples)
Width ~3%
ASTM D1761
ASTM D1761
ASTM D2047
ASTM F1679
ASTM F1679
ASTM D1413
AWPAE1-72
ASTM D2395
ASTM D198
ASTM D143
ASTM D198
ASTM D143
ASTM D4761
ASTM D4761
ASTM C177
TCLP-EPA 1311
35.2 x 10-6 to 42.7 x 10-6 (inch/inch/°F)
644 x 10-6 to 776 x 10-6 (length/length/°C)
16.1 x 10-6 to 19.2 x 10-6 (inch/inch/°F)
297 x 10-6 to 356 x 10-6 (length/length/°C)
Typical Trex Values
for Const
ant
High Humidity
(6"/15.2 cm long samples)
~1%
PHYSICAL MECH CAL PROPERTIES
NOTES:
(a) Corresponding Smoke Developed Index is 285.
(b) Values shown are for reference only. These values should not be used to calculate gapping for Trex. Follow Trex installation literature for proper
width-to-width and end-to-end gapping information.
(c) 8d common wire nail. No. 10 wood screw.
(d) ASTM D2047 test conducted on sanded/unsanded unweathered samples with leather surface.
ASTM F1679 test conducted on sanded/unsanded weathered samples with neolite surface.
(e) Material weight loss was 0%.
(f) Ultimate strength values are not meant for design analysis. Testing performed on a 1" x 5.5" (2.5 cm x 14 cm) cross section. Design values are for
temperatures up to 130°F (54°C).
(g) Compressive strength parallel to the length.
(h) Compressive strength perpendicular to length.
(i) Leaching was below levels established by EPA for all constituent categories.