|
 |
| Southern Pine Design Values |
TABLE 4: SCAFFOLD PLANK
Based on 2002 SPIB Grading Rules
Values in pounds per square inch (psi)
Table 4 Scaffold
Plank1
2" and 3" thick, 8" and wider |
| Size |
Grade
|
Extreme Fiber Stress
in Bending Fb
Flatwise Use Only
|
Modulus of
Elasticity E
|
2" thick,
8" and wider
MC≤19%2
|
Dense Industrial 72 Scaffold Plank
Dense Industrial 65 Scaffold Plank
|
2400
2200
|
1,800,000
1,800,000
|
3" thick,
8" and wider
MC>19%
|
Dense Industrial 72 Scaffold Plank
Dense Industrial 65 Scaffold Plank
|
1800
1650
|
1,600,000
1,600,000
|
(1) Scaffold plank design values are
for flatwise use only. They were calculated using ASTM D245 and D2555
standards and modified using procedures shown in "Calculating Apparent
Reliability of Wood Scaffold Planks," as published by the Journal on Structural
Safety, 2 (1984) 47-57, and updated in 1993.
(2) For exposed conditions of use (where the moisture content in service
may exceed 19%) the values shall be multiplied by: 0.85 for "Fb"
and 0.90 for "E".
|
Disclaimer:
The Southern Pine Council™ does not test lumber or establish design values. The purpose of these tables is to collect and organize data available from other sources for the convenience of builders, engineers, architects and other professionals. The Southern Pine design values contained herein are taken from the Standard Grading Rules for Southern Pine Lumber, 2002 Edition, published by the Southern Pine Inspection Bureau, and the adjustment factors are taken from the National Design Specification® (NDS®) for Wood Construction, 2001 Edition, published by the American Forest & Paper Association. Neither the Southern Pine Council™, nor its members, warrant that the data from such sources on which the recommended uses of Southern Pine lumber contained herein are based is correct, and disclaim responsibility for injury or damage resulting from the use of such design values.
The conditions under which lumber is used in construction may vary widely, as does the quality of workmanship and construction methods. Neither the Southern Pine Council™, nor its members, have knowledge of the quality of the workmanship or construction methods used on any construction project, and, accordingly, do not warrant the design or performance of the lumber in completed structures.
|
|
|
Previous
