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Engineering Data

PREMIUM HDPE, B-GRADE, & UTILITY PLASTIC LUMBER

Download PDF of this page.

Download Material Flame Properties\PDF  Specifications HERE

SPECIFICATION PLASTIC LUMBER

TEST TYPE

Note

 ASTM Standard Average Results Standard Deviation
Density/Specific Gravity (g/cc)

I

 D611-97 0.68559 0.00434
Compression

 

I

 D6108-97

Elastic Modulus

92,249

Stress at 3% Strain

1,734

(psi)

3,328

(psi)

46
Flexure

II

  

D6109-97

 

Elastic Modulus

112,000

Stress at 3% Strain

2,358
(psi)
1,560
(psi)
29.4
Fastener Pullout Failure Load (lbs.)

I

 D6117-97

452

 5
Fastener Shear Maximum Load (lbs.)

I

 D6117-97

2,464

 67
Thermal Expansion (in/in/°F)

II

 D6341-98

4.965 x 10 ¯5

 2.057 x 10 ¯6
Friction Coefficient

II

 D2394-83 Material

Dry

Wet
        Static Sliding Static Sliding
      Leather 0.27 0.22 0.32 0.29
      Rubber 0.55 0.46 0.70 0.67
Flame Spread

II

E108

Modified per

D6662

PASSED
Notes:  l  Testing conducted by Battelle of Columbus, OH
            ll  Warnock Hershey Certified for ASTM D6662-01 by Intertek Testing Services NA Ltd. of Coquitlam,BC.
For further information on our ASTM standards please contact your Plastic Lumber Yard representative.
For further information on Intertek Testing Services NA Ltd. and the Warnock Hershey certification, please contact ITS at: www.ETLSemko.com
For Further information and their processes please contact ASTM at: www.astm.org

Chemical Resistance
Since high density polyethylene has a high resistance to most acids and chemicals,  
Plastic Lumber is not affected by exposure to most substances.

Ultraviolet Weathering
An ultraviolet stabilizer is incorporated at the time of manufacture. It protects the plastic from ultraviolet light degradation and ensures that the outside of the product will not degrade in exterior applications.

TECHNICAL DATA MOLDED GRADE PLASTIC LUMBER

  English Units Metric Units

TEST

 ASTM TEST VALUE UNITS VALUE UNITS
Flexural Strength D6109-97 1355 PSI 95 KG/CM²
Flexural Modulus D6109-97 95939 PSI 6744 KG/CM²
Compression Strength D6108-97 1420 PSI 100 KG/CM²
Compression Modulus D6108-97 51000 PSI 3585 KG/CM²
Specific Gravity D6111-97 0.861 G/CC 0.861 G/CC
Flash Point   644 DEG F 340 DEG C
Moisture Absorption   0.06 % by weight 0.06 % by weight
Thermal Expansion D6341-98 0.000055 INCH/INCH/DEG F     
Average Nail Pull Out D6117-97 504 Lbs.    
Static Coefficient of Friction-Dry D2394-83(99) .48      
Static Coefficient of Friction-Wet D2394-83(99) .40      
Sliding Coefficient of Friction-Dry D2394-83(99) .22      
Sliding Coefficient of Friction-Wet D2394-83(99) .43      

THIS DATA REPRESENTS AVERAGE VALUES NOT MINIMUMS. SAFETY FACTORS MUST BE ADDED INTO THE DESIGN.

Chemical Resistance
Since high density polyethylene has a high resistance to most acids and chemicals,  
Plastic Lumber is not affected by exposure to most substances.

Ultraviolet Weathering
An ultraviolet stabilizer is incorporated at the time of manufacture. It protects the plastic from ultraviolet light degradation and ensures that the outside of the product will not degrade in exterior applications.

TECHNICAL DATA STRUCTURAL GRADE PLASTIC LUMBER

  English Units Metric Units

TEST

 ASTM TEST

 

 VALUE

 

 UNITS

 

 VALUE

 

 UNITS

 
Flexural Strength D6109-97 2750 PSI 193 KG/CM²
Flexural Modulus D6109-97 306080 PSI 15503 KG/CM²
Compression Strength D6108-97 2340 PSI 165 KG/CM²
Compression Modulus D6108-97 114900 PSI 8077 KG/CM²
Specific Gravity D6111-97 0.93 G/CC 0.93 G/CC
Flash Point   644 DEG F 340 DEG C
Moisture Absorption   0.06 % by weight 0.06 % by weight
Thermal Expansion D6341-98 0.000033 INCH/INCH/DEG F    
Average Nail Pull Out D6117-97 504 Lbs. 229 KG
Static Coefficient of Friction-Dry D2394-83(99) .53      
Static Coefficient of Friction-Wet D2394-83(99) .51      
Sliding Coefficient of Friction-Dry D2394-83(99) .23      
Sliding Coefficient of Friction-Wet D2394-83(99) .51      
Flame Spread E84 (03a) 62      
Flame Spread Classification E84 (03a) 60      
Smoke Developed E84 (03a) 230      
Smoke Developed Classification E84 (03a) 250      
Spontaneous Ignition D-1929 824 DEG F 440 DEG C

THIS DATA REPRESENTS AVERAGE VALUES NOT MINIMUMS. SAFETY FACTORS MUST BE ADDED INTO THE DESIGN.

Chemical Resistance
Since high density polyethylene has a high resistance to most acids and chemicals,  
Plastic Lumber is not affected by exposure to most substances.

PREMIUM GRADE PLASTIC LUMBER SPAN TABLE

MAXIMUM ALLOWABLE SPANS
LUMBER SIZE

(INCHES)

 

 MAXIMUM UNIFORM LOAD
40 PSF 100 PSF
  SPAN (INCHES)
3/4 x 5 1/2 12 9
3/4 x 6 12 9
1 x 5 1/2 16 11
1 1/2 x 3 1/2 16 11
1 1/2 x 5 1/2 23 17

 

MOLDED GRADE PLASTIC LUMBER SPAN TABLE

78° F

Chart for Ambient 78° F     For use with DYNAMIC LOAD ONLY: For STATIC LOADS please contact us.

DECKING MODE 60 Lbs. DYNAMIC LOAD
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 20.0 1.7
2x6,8,10,12 1.5 26.7 2.2
3x4,6,8,10 2.4 42.7 3.6
4x4,6 3.4 60.5 5.0
5x5 4.4 78.3 6.5
6x6,12 5.4 96.1 8.0

 100 Lbs./Sq FOOT DYNAMIC LOAD

  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 16.9 1.4
2x6,8,10,12 1.5 22.4 1.9
3x4,6,8,10 2.4 35.5 3.0
4x4,6 3.4 49.6 4.1
5x5 4.4 63.3 5.3
6x6,12 5.4 76.8 6.4
DECKING MODE 150 Lbs. DYNAMIC LOAD
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 14.9 1.2
2x6,8,10,12 1.5 19.7 1.6
3x4,6,8,10 2.4 31.3 2.6
4x4,6 3.4 44 3.7
5x5 4.4 56.4 4.7
6x6,12 5.4 68.6 5.7

200 Lbs./Sq FOOT DYNAMIC LOAD

  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 13.5 1.1
2x6,8,10,12 1.5 18 1.5
3x4,6,8,10 2.4 28.6 2.4
4x4,6 3.4 40.3 3.4
5x5 4.4 51.7 4.3
6x6,12 5.4 63.1 5.3

MOLDED GRADE PLASTIC LUMBER SPAN TABLE

122° F

Chart for Ambient 122° F     For use with DYNAMIC LOAD ONLY: For STATIC LOADS please contact us.

DECKING MODE 60 Lbs. DYNAMIC LOAD
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 17.3 1.4
2x6,8,10,12 1.5 23.1 1.9
3x4,6,8,10 2.4 37.0 3.1
4x4,6 3.4 52.4 4.4
5x5 4.4 67.8 5.7
6x6,12 5.4 83.3 6.9

 100 Lbs./Sq FOOT DYNAMIC LOAD

  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 14.8 1.2
2x6,8,10,12 1.5 19.8 1.6
3x4,6,8,10 2.4 31.6 2.6
4x4,6 3.4 44.8 3.7
5x5 4.4 58.0 4.8
6x6,12 5.4 71.2 5.9
DECKING MODE 150 Lbs. DYNAMIC LOAD
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 13.1 1.1
2x6,8,10,12 1.5 17.4 1.5
3x4,6,8,10 2.4 27.8 2.3
4x4,6 3.4 39.4 3.3
5x5 4.4 51.0 4.3
6x6,12 5.4 62.6 5.2

200 Lbs./Sq FOOT DYNAMIC LOAD

  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 X 4,6 1.125 11.9 1.0
2x6,8,10,12 1.5 15.9 1.3
3x4,6,8,10 2.4 25.4 2.1
4x4,6 3.4 36.0 3.0
5x5 4.4 46.5 3.9
6x6,12 5.4 57.1 4.8

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

JOIST MODE  78° F - LIMITED DEFLECTION 12" CENTER DISTANCE FOR JOIST

60 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 67.4 5.6
2x8 1.5 7.3 91.2 7.6
2x10 1.5 9.25 115.5 9.6
2x12 1.5 11.3 141.1 11.8
3x4 2.4 3.4 49.7 4.1
3x6 2.4 5.5 80.3 6.7
3x8 2.4 7.4 105.7 8.8
3x10 2.4 9.3 131.8 11.0
3x12 2.4 11.3 158.9 13.2
4x4 3.4 3.4 55.8 4.6
4x6 3.4 5.4 88.6 7.4
5x5 4.4 4.4 78.7 6.6
6x6 5.4 5.4 103.4 8.6
6x12 5.4 11.3 197.9 16.5

 

 100 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 57.7 4.8
2x8 1.5 7.3 78.0 6.5
2x10 1.5 9.25 98.9 8.2
2x12 1.5 11.3 120.8 10.1
3x4 2.4 3.4 42.5 3.5
3x6 2.4 5.5 68.8 5.7
3x8 2.4 7.4 91.5 7.6
3x10 2.4 9.3 114.4 9.5
3x12 2.4 11.3 138.3 11.5
4x4 3.4 3.4 47.7 4.0
4x6 3.4 5.4 75.8 6.3
5x5 4.4 4.4 67.3 5.6
6x6 5.4 5.4 88.5 7.4
6x12 5.4 11.3 175.1 14.6
150 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 50.8 4.2
2x8 1.5 7.3 68.7 5.7
2x10 1.5 9.25 87.0 7.3
2x12 1.5 11.3 106.3 8.9
3x4 2.4 3.4 37.4 3.1
3x6 2.4 5.5 60.5 5.0
3x8 2.4 7.4 81.0 6.8
3x10 2.4 9.3 101.5 8.5
3x12 2.4 11.3 122.8 10.2
4x4 3.4 3.4 42.0 3.5
4x6 3.4 5.4 66.7 5.6
5x5 4.4 4.4 59.3 4.9
6x6 5.4 5.4 77.9 6.5
6x12 5.4 11.3 157.1 13.1
200 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 46.3 3.9
2x8 1.5 7.3 62.6 5.2
2x10 1.5 9.25 79.4 6.6
2x12 1.5 11.3 97.0 8.1
3x4 2.4 3.4 34.1 2.8
3x6 2.4 5.5 55.2 4.6
3x8 2.4 7.4 74.1 6.2
3x10 2.4 9.3 92.9 7.7
3x12 2.4 11.3 112.6 9.4
4x4 3.4 3.4 38.3 3.2
4x6 3.4 5.4 60.9 5.1
5x5 4.4 4.4 54.1 4.5
6x6 5.4 5.4 71.0 5.9
6x12 5.4 11.3 144.8 12.1

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

JOIST MODE  120° F - LIMITED DEFLECTION  12" CENTER DISTANCE FOR JOIST

60 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 57.6 4.8
2x8 1.5 7.3 77.9 6.5
2x10 1.5 9.25 98.7 8.2
2x12 1.5 11.3 120.5 10.0
3x4 2.4 3.4 42.4 3.5
3x6 2.4 5.5 68.6 5.7
3x8 2.4 7.4 89.5 7.5
3x10 2.4 9.3 111.6 9.3
3x12 2.4 11.3 134.5 11.2
4x4 3.4 3.4 47.6 4.0
4x6 3.4 5.4 75.7 6.3
5x5 4.4 4.4 67.2 5.6
6x6 5.4 5.4 88.3 7.4
6x12 5.4 11.3 167.6 14.0

 

 100 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 49.3 4.1
2x8 1.5 7.3 56.7 5.6
2x10 1.5 9.25 84.5 7.0
2x12 1.5 11.3 103.2 8.6
3x4 2.4 3.4 36.3 3.0
3x6 2.4 5.5 58.7 4.9
3x8 2.4 7.4 77.5 6.5
3x10 2.4 9.3 96.9 8.1
3x12 2.4 11.3 117.1 9.8
4x4 3.4 3.4 40.8 3.4
4x6 3.4 5.4 64.8 5.4
5x5 4.4 4.4 57.5 4.8
6x6 5.4 5.4 73.2 6.1
6x12 5.4 11.3 148.2 12.4
150 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 43.4 3.6
2x8 1.5 7.3 58.7 4.9
2x10 1.5 9.25 74.3 6.2
2x12 1.5 11.3 90.8 7.6
3x4 2.4 3.4 32.0 2.7
3x6 2.4 5.5 51.7 4.3
3x8 2.4 7.4 68.6 5.7
3x10 2.4 9.3 85.9 7.2
3x12 2.4 11.3 104.0 8.7
4x4 3.4 3.4 35.9 3.0
4x6 3.4 5.4 57.0 4.8
5x5 4.4 4.4 50.6 4.2
6x6 5.4 5.4 66.5 5.5
6x12 5.4 11.3 133.0 11.1

 

 200 Lbs./Sq Foot Dynamic Load.  12" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 39.6 3.3
2x8 1.5 7.3 53.5 4.5
2x10 1.5 9.25 67.8 5.7
2x12 1.5 11.3 82.8 6.9
3x4 2.4 3.4 29.1 2.4
3x6 2.4 5.5 47.2 3.9
3x8 2.4 7.4 62.8 5.2
3x10 2.4 9.3 78.7 6.6
3x12 2.4 11.3 95.3 7.9
4x4 3.4 3.4 32.7 2.7
4x6 3.4 5.4 52.0 4.3
5x5 4.4 4.4 46.2 3.8
6x6 5.4 5.4 59.6 5.0
6x12 5.4 11.3 122.6 10.2

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

16" Center distance for joist.  78° F - Limited By Deflection

JOIST MODE

60 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 61.3 5.1
2x8 1.5 7.3 82.8 6.9
2x10 1.5 9.25 105.0 8.7
2x12 1.5 11.3 128.2 10.7
3x4 2.4 3.4 45.1 3.8
3x6 2.4 5.5 73.0 6.1
3x8 2.4 7.4 96.7 8.1
3x10 2.4 9.3 120.9 10.1
3x12 2.4 11.3 146.0 12.2
4x4 3.4 3.4 50.7 4.2
4x6 3.4 5.4 80.5 6.7
5x5 4.4 4.4 71.5 6.0
6x6 5.4 5.4 93.9 7.8
6x12 5.4 11.3 183.8 15.3
 

100 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  78° F - Limited Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 52.4 4.4
2x8 1.5 7.3 70.9 5.9
2x10 1.5 9.25 89.8 7.5
2x12 1.5 11.3 109.7 9.1
3x4 2.4 3.4 38.6 3.2
3x6 2.4 5.5 62.5 5.2
3x8 2.4 7.4 83.5 7.0
3x10 2.4 9.3 104.6 8.7
3x12 2.4 11.3 126.5 10.5
4x4 3.4 3.4 43.4 3.6
4x6 3.4 5.4 68.9 5.7
5x5 4.4 4.4 61.2 5.1
6x6 5.4 5.4 80.4 6.7
6x12 5.4 11.3 161.5 13.5

DECKING MODE

60 Lbs./Sq Foot Dynamic Load  78° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 26.2 2.2
2 x6,8,10,12 1.5 35.0 2.9
3 x4,6,8,10 2.4 55.9 4.7
4 x4,6 3.4 79.2 6.6
5 x 5 4.4 102.5 8.5
6 x6,12 5.4 125.8 10.5

 

 

 

 

 

 

 

DECKING MODE

100 Lbs./Sq Foot Dynamic Load  78° F - Limited Deflection

 

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 22.4 1.9
2 x6,8,10,12 1.5 29.9 2.5
3 x4,6,8,10 2.4 47.8 4.0
4 x4,6 3.4 67.8 5.6
5 x 5 4.4 87.7 7.3
6 x6,12 5.4 107.6 9.0

JOIST MODE

150 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  78° F - Limited Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 46.2 3.8
2x8 1.5 7.3 62.4 5.2
2x10 1.5 9.25 79.1 6.6
2x12 1.5 11.3 96.6 8.0
3x4 2.4 3.4 34.0 2.8
3x6 2.4 5.5 55.0 4.6
3x8 2.4 7.4 73.9 6.2
3x10 2.4 9.3 92.6 7.7
3x12 2.4 11.3 112.2 9.3
4x4 3.4 3.4 38.2 3.2
4x6 3.4 5.4 60.6 5.1
5x5 4.4 4.4 53.8 4.5
6x6 5.4 5.4 70.7 5.9
6x12 5.4 11.3 144.3 12.0
 

200 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  78° F - Limited By Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 42.1 3.5
2x8 1.5 7.3 56.9 4.7
2x10 1.5 9.25 72.1 6.0
2x12 1.5 11.3 88.1 7.3
3x4 2.4 3.4 31.0 2.6
3x6 2.4 5.5 50.2 4.2
3x8 2.4 7.4 67.5 5.6
3x10 2.4 9.3 84.7 7.1
3x12 2.4 11.3 102.7 8.6
4x4 3.4 3.4 34.8 2.9
4x6 3.4 5.4 55.3 4.6
5x5 4.4 4.4 49.1 4.1
6x6 5.4 5.4 64.5 5.4
6x12 5.4 11.3 132.6 11.1

DECKING MODE

150 Lbs./Sq Foot Dynamic Load  78° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 19.7 1.6
2 x6,8,10,12 1.5 26.3 2.2
3 x4,6,8,10 2.4 42.1 3.5
4 x4,6 3.4 59.6 5.0
5 x 5 4.4 77.1 6.4
6 x6,12 5.4 94.7 7.9

 

 

 

DECKING MODE

200 Lbs./Sq Foot Dynamic Load  78° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 18.0 1.5
2 x6,8,10,12 1.5 24.0 2.0
3 x4,6,8,10 2.4 38.4 3.2
4 x4,6 3.4 54.4 4.5
5 x 5 4.4 70.3 5.9
6 x6,12 5.4 86.3 7.2

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

16" Center distance for joist.  120° F  Limited By Deflection

JOIST MODE

60 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  120° F - Limited Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 52.3 4.4
2x8 1.5 7.3 70.8 5.9
2x10 1.5 9.25 89.7 7.5
2x12 1.5 11.3 109.5 9.1
3x4 2.4 3.4 38.5 3.2
3x6 2.4 5.5 62.3 5.2
3x8 2.4 7.4 83.9 7.0
3x10 2.4 9.3 102.3 8.5
3x12 2.4 11.3 123.6 10.3
4x4 3.4 3.4 43.3 3.6
4x6 3.4 5.4 68.8 5.7
5x5 4.4 4.4 61.0 5.1
6x6 5.4 5.4 80.2 6.7
6x12 5.4 11.3 155.6 13.0
 

100 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  120° F - Limited By Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 44.8 3.7
2x8 1.5 7.3 60.6 5.0
2x10 1.5 9.25 76.7 6.4
2x12 1.5 11.3 93.7 7.8
3x4 2.4 3.4 33.0 2.7
3x6 2.4 5.5 53.4 4.4
3x8 2.4 7.4 71.6 6.0
3x10 2.4 9.3 88.5 7.4
3x12 2.4 11.3 107.2 8.9
4x4 3.4 3.4 37.0 3.1
4x6 3.4 5.4 58.8 4.9
5x5 4.4 4.4 525.2 4.4
6x6 5.4 5.4 68.7 5.7
6x12 5.4 11.3 136.7 11.4

DECKING MODE

60 Lbs./Sq Foot Dynamic Load  120° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 24.1 2.0
2 x6,8,10,12 1.5 32.1 2.7
3 x4,6,8,10 2.4 51.3 4.3
4 x4,6 3.4 72.7 6.1
5 x 5 4.4 94.1 7.8
6 x6,12 5.4 115.5 9.6

 

 

 

DECKING MODE

100 Lbs./Sq Foot Dynamic Load  120° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 20.6 1.7
2 x6,8,10,12 1.5 27.4 2.3
3 x4,6,8,10 2.4 43.9 3.7
4 x4,6 3.4 62.2 5.2
5 x 5 4.4 80.5 6.7
6 x6,12 5.4 98.8 8.2

JOIST MODE

150 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  120° F - Limited By Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 39.4 3.3
2x8 1.5 7.3 53.3 4.4
2x10 1.5 9.25 67.5 5.6
2x12 1.5 11.3 82.5 6.9
3x4 2.4 3.4 29.0 2.4
3x6 2.4 5.5 47.0 3.9
3x8 2.4 7.4 62.5 5.2
3x10 2.4 9.3 78.4 6.5
3x12 2.4 11.3 95.0 7.9
4x4 3.4 3.4 32.6 2.7
4x6 3.4 5.4 51.8 4.3
5x5 4.4 4.4 46.0 3.8
6x6 5.4 5.4 60.4 5.0
6x12 5.4 11.3 122.2 10.2
 

200 Lbs./Sq Foot Dynamic Load.  16" Center distance for joist.  120° F - Limited By Deflection

  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 36.0 3.0
2x8 1.5 7.3 48.6 4.1
2x10 1.5 9.25 61.6 5.1
2x12 1.5 11.3 75.3 6.3
3x4 2.4 3.4 26.5 2.2
3x6 2.4 5.5 42.8 3.6
3x8 2.4 7.4 57.6 4.8
3x10 2.4 9.3 71.7 6.0
3x12 2.4 11.3 87.0 7.2
4x4 3.4 3.4 29.7 2.5
4x6 3.4 5.4 47.2 3.9
5x5 4.4 4.4 41.9 3.5
6x6 5.4 5.4 55.1 4.6
6x12 5.4 11.3 112.3 9.4

DECKING MODE

150 Lbs./Sq Foot Dynamic Load  120° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 18.1 1.5
2 x6,8,10,12 1.5 24.1 2.0
3 x4,6,8,10 2.4 38.6 3.2
4 x4,6 3.4 54.7 4.6
5 x 5 4.4 70.8 5.9
6 x6,12 5.4 86.9 7.2

 

 

 

DECKING MODE

200 Lbs./Sq Foot Dynamic Load  120° F - Limited Deflection

 
  ACTUAL SIZE MAXIMUM SPAN
SIZE THICKNESS INCHES FEET
5/4 x4,6 1.125 16.5 1.4
2 x6,8,10,12 1.5 22.0 1.8
3 x4,6,8,10 2.4 35.2 2.9
4 x4,6 3.4 49.9 4.2
5 x 5 4.4 64.6 5.4
6 x6,12 5.4 79.2 6.6

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

24" Center distance for joist.  78° F  Limited  Deflection

60 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 53.5 4.5
2x8 1.5 7.3 72.4 6.0
2x10 1.5 9.25 91.7 7.6
2x12 1.5 11.3 112.0 9.3
3x4 2.4 3.4 39.4 3.3
3x6 2.4 5.5 63.8 5.3
3x8 2.4 7.4 85.2 7.1
3x10 2.4 9.3 106.6 8.9
3x12 2.4 11.3 129.0 10.7
4x4 3.4 3.4 44.3 3.7
4x6 3.4 5.4 70.3 5.9
5x5 4.4 4.4 62.4 5.2
6x6 5.4 5.4 82.0 6.8
6x12 5.4 11.3 164.3 13.7

 

 100 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 45.8 3.8
2x8 1.5 7.3 61.9 5.2
2x10 1.5 9.25 78.5 6.5
2x12 1.5 11.3 95.9 8.0
3x4 2.4 3.4 33.7 2.8
3x6 2.4 5.5 54.6 4.5
3x8 2.4 7.4 73.4 6.1
3x10 2.4 9.3 91.9 7.7
3x12 2.4 11.3 111.4 9.3
4x4 3.4 3.4 37.9 3.2
4x6 3.4 5.4 60.2 5.0
5x5 4.4 4.4 53.4 4.5
6x6 5.4 5.4 70.2 5.9
6x12 5.4 11.3 143.3 11.9
150 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 40.3 3.4
2x8 1.5 7.3 54.5 4.5
2x10 1.5 9.25 69.1 5.8
2x12 1.5 11.3 54.4 7.0
3x4 2.4 3.4 29.7 2.5
3x6 2.4 5.5 48.0 4.0
3x8 2.4 7.4 64.7 5.4
3x10 2.4 9.3 81.2 6.8
3x12 2.4 11.3 98.5 8.2
4x4 3.4 3.4 33.4 2.8
4x6 3.4 5.4 53.0 4.4
5x5 4.4 4.4 47.0 3.9
6x6 5.4 5.4 61.8 5.2
6x12 5.4 11.3 127.4 10.6

 

 200 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  78° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 36.8 3.1
2x8 1.5 7.3 49.7 4.1
2x10 1.5 9.25 63.0 5.3
2x12 1.5 11.3 77.0 6.4
3x4 2.4 3.4 27.1 2.3
3x6 2.4 5.5 43.8 3.7
3x8 2.4 7.4 59.1 4.9
3x10 2.4 9.3 74.2 6.2
3x12 2.4 11.3 90.1 7.5
4x4 3.4 3.4 30.4 2.5
4x6 3.4 5.4 48.3 4.0
5x5 4.4 4.4 42.9 3.6
6x6 5.4 5.4 56.4 4.7
6x12 5.4 11.3 116.9 9.7

STRUCTURAL GRADE PLASTIC LUMBER SPAN TABLE

24" Center distance for joist.  120° F - Limited  Deflection

60 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 45.7 3.8
2x8 1.5 7.3 61.8 5.2
2x10 1.5 9.25 78.3 6.5
2x12 1.5 11.3 95.7 8.0
3x4 2.4 3.4 33.7 2.8
3x6 2.4 5.5 54.5 4.5
3x8 2.4 7.4 72.1 6.0
3x10 2.4 9.3 90.3 7.5
3x12 2.4 11.3 109.2 9.1
4x4 3.4 3.4 37.8 3.2
4x6 3.4 5.4 60.1 5.0
5x5 4.4 4.4 53.3 4.4
6x6 5.4 5.4 70.1 5.8
6x12 5.4 11.3 139.2 11.8

 

 100 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 39.1 3.3
2x8 1.5 7.3 52.9 4.4
2x10 1.5 9.25 67.0 5.6
2x12 1.5 11.3 81.9 6.8
3x4 2.4 3.4 28.8 2.4
3x6 2.4 5.5 46.6 3.9
3x8 2.4 7.4 62.1 5.2
3x10 2.4 9.3 77.8 6.5
3x12 2.4 11.3 94.3 7.9
4x4 3.4 3.4 32.4 2.7
4x6 3.4 5.4 51.4 4.3
5x5 4.4 4.4 45.6 3.8
6x6 5.4 5.4 60.0 5.0
6x12 5.4 11.3 121.3 10.1
150 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 34.4 2.9
2x8 1.5 7.3 46.6 3.9
2x10 1.5 9.25 59.0 4.9
2x12 1.5 11.3 72.1 6.0
3x4 2.4 3.4 25.4 2.1
3x6 2.4 5.5 41.0 3.4
3x8 2.4 7.4 54.8 4.6
3x10 2.4 9.3 68.8 5.7
3x12 2.4 11.3 83.4 7.0
4x4 3.4 3.4 28.5 2.4
4x6 3.4 5.4 45.2 3.8
5x5 4.4 4.4 40.2 3.3
6x6 5.4 5.4 52.8 4.4
6x12 5.4 11.3 107.9 9.0

 

 200 Lbs./Sq Foot Dynamic Load.  24" Center distance for joist.  120° F - Limited Deflection
  ACTUAL SIZE

MAXIMUM SPAN
SIZE WIDTH HEIGHT INCHES FEET
2x6 1.5 5.4 31.4 2.6
2x8 1.5 7.3 42.5 3.5
2x10 1.5 9.25 53.8 4.5
2x12 1.5 11.3 65.7 5.5
3x4 2.4 3.4 23.1 1.9
3x6 2.4 5.5 37.4 3.1
3x8 2.4 7.4 50.1 4.2
3x10 2.4 9.3 62.9 5.2
3x12 2.4 11.3 76.3 6.4
4x4 3.4 3.4 26.0 2.2
4x6 3.4 5.4 41.3 3.4
5x5 4.4 4.4 36.6 3.1
6x6 5.4 5.4 48.1 4.0
6x12 5.4 11.3 99.0 8.2

 
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