|
|
|
|
|
Modulus
of Rupture (Flexural Strength)
|
ASTM D6109
|
2,682
psi (ambient)
1,476 psi (130° F)
3,079 psi (minus 20° F)
|
|
Modulus
of Elasticity (flexural)
|
ASTM D6109
|
367,000
psi
|
|
Compression
(a)
|
ASTM D6108
|
3,479
psi
|
|
Self Ignition
Temperature
|
ASTM D1929
|
806° F
|
|
Flame Spread
Index
|
ASTM E84
|
100
|
|
Smoke Developed
Index
|
ASTM E84
|
165
|
|
Water Absorption
|
ASTM D1037
|
1.48%
(24 hr immersion)
(24% for
pressure treated lumber) [24 hr]
2.94%
(7 day immersion)
|
|
Moisture
Expansion
|
|
24 hr
– 0.01% (sidewise)
7 day
– 0.095% (sidewise)
40 day - length - less than 0.05%
40 day - width 0.5%
40 day - depth 2.5%
|
|
Moisture
Content (brushed surface)
|
ASTM D1037
|
0.6%
|
|
Thermal
Expansion/Contraction
|
ASTM E228
|
3.58 X
10 -5/° F
|
|
Fungus Resistance
(soil block cultures)
|
ASTM D1413
|
White-rot,
zero effect
Brown
rot – zero effect
|
|
Termite
Resistance
|
ASTM D3345
|
No attack
(Block
ratings 10)
|
|
Specific
Gravity
|
ASTM D1037
|
1.20 g/cm3
|
|
Tensile
Strength
|
ASTM D143
|
1,127
psi.
|
|
Tensile
Modulus
|
ASTM D143
|
178,000
psi.
|
|
Shear Strength
|
ASTM D905
|
1,223
psi.
|
|
Static Coefficient
of Friction Dry, Leather
|
ASTM D2047
|
0.53/.55
|
|
Static Coefficient
of Friction Wet, Leather
|
ASTM D2047
|
0.85-0.90/did
not slip
|
|
Nail Withdrawal
(only 1/4-inch thick flat panel of the hollow
profile was penetrated).
|
ASTM D1761
|
20 lb
1/4" (6d common nail)
30 lb 1/4" (Dickson floor nail)
40 lb 1/4" (16d treated LBR nail)
100 lb 1/4" (4d Ring Shank nail)
|
|
Direct Nail
Pull
Through Test
|
ASTM D1037
|
206 lbs
(8d, 2-1/2” stainless spiral thread nail, head
D=0.276-in)
|
|
Screw Withdrawal
(b)
|
ASTM D1037
|
204 lb.
1/4
|
|
Abrasion
Resistance
(brushed surface)
|
ASTM D4060
|
3.02 g/1000
cycles
|
|
Hardness
|
ASTM D143
|
678 lbs.
(flange)
298 lbs. (web)
|
|
Puncture
Resistance
|
ASTM D3763
(modified)
|
592 lbs
|
|
Deflection
at Midspan
|
BOCA/ICBO/ICC
requirement
|
Passes
24" on center
|
|
Deflection
Recovery
|
BOCA/ICBO/ICC
requirement
|
95% (passes)
(75% - requirement)
|
|
Weight (5/4
x 6 in)
|
|
1.80 lbs/ft
|
|
Weathering
|
ASTM G155
|
Mahogany,
Cedar and Driftwood - negligible fading after
6,000 hrs at 102 min/18 min cycle regime (UV and
UV/water spray)
|
|
Effect of
weathering on flexural strength (on modulus of
rupture)
|
ASTM G155
ASTM D6109
|
Negligible
|
|
Effect of
maximum water absorption on flexural strength
|
ASTM D6109
|
Negligible
|
|
Effect of
triple freeze-thaw cycles on flexural strength
|
ASTM D6109
|
Negligible
|
NOTES:___________________________________
(a) Parallel to length. An average figure
for all three decking profiles (S4S 2x6; tongue
& groove 2x6; S4S 2x8).
(b) For 1" #10 screw type AB pulling
out of a flat area of a hollow decking board,
with wall thickness 0.25".
|
For more information, please consult GeoDeck’s
ICC-ES Legacy Report No. 21-71, former BOAC Report No.
21-71. Click
here to download a PDF of the report.
