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Engineering Properties Southern Pine Lumber

Civil Engineering and Design
Engineering Material Properties

Engineering Properties of Visually Graded Southern Pine Lumber.

Lumber Visually Graded Dimension, Engineering Design Properties - Engineering design values are for normal load duration and dry service conditions

Species and
commercial
grade
Design values, lb/in2
Grading
rules
agency
Compression
perpendicular
to
grainFc⊥
Compression
parallel to
grain Fc
Modulus of
elasticity E
Dense
select
structural
660
2,250
1,900,000
SPIB
Select
structural
565
2,100
1,800,000
Nondense
select
structural
480
1,950
1,700,000
No. 1
dense
660
2,000
1,800,000
No. 1
565
1,850
1,700,000
No. 1
nondense
480
1,700
1,600,000
No. 2
dense
660
1,850
1,700,000
No. 2
656
1,650
1,600,000
No. 2
nondense
480
1,600
1,400,000
No. 3
565
975
1,400,000
Stud
565
975
1,400,000
Construction
565
1,800
1,500,000
Standard
565
1,500
1,300,000
Utility
565
975
1,300,000
Dense
select
structural
660
2,150
1,900,000
Select
structural
565
2,000
1,800,000
Nondense
select
structural
480
1,850
1,700,000
No. 1 dense
660
1,900
1,800,000
No. 1
565
1,750
1,700,000
No. 1
nondense
480
1,600
1,600,000
No. 2
dense
660
1,750
1,700,000
No. 2
565
1,600
1,600,000
No. 2
nondense
480
1,500
1,400,000
No. 3
565
925
1,400,000
Stud
565
925
1,400,000
Dense
select
structural
660
2,050
1,900,000
Select
structural
565
1,900
1,800,000
Nondense
select
structural
480
1,750
1,700,000
No. 1 dense
660
1,800
1,800,000
No. 1
565
1,650
1,700,000
No. 1 nondense
480
1,550
1,600,000
No. 2 dense
660
1,700
1,700,000
No. 2
565
1,550
1,600,000
No. 2 nondense
480
1,450
1,400,000
No. 3
565
875
1,400,000
Dense
select
structural
660
2,000
1,900,000
Select structural
565
1,850
1,800,000
Nondense
select
structural
480
1,750
1,700,000
No. 1 dense
660
1,750
1,800,000
No. 1
565
1,600
1,700,000
No. 1
nondense
480
1,500
1,600,000
No. 2
dense
660
1,650
1,700,000
No. 2
565
1,500
1,600,000
No. 2
nondense
480
1,400
1,400,000
No. 3
565
850
1,400,000
Dense
select
structural
660
1,950
1,900,000
Select
structural
565
1,800
1,800,000
Nondense
select
structural
480
1,700
1,700,000
No. 1
dense
660
1,700
1,800,000
No. 1
565
1,600
1,700,000
No. 1
nondense
480
1,500
1,600,000
No. 2
dense
660
1,600
1,700,000
No. 2
565
1,450
1,600,000
No. 2
nondense
480
1,350
1,400,000
No. 3
565
825
1,400,000

Table Continued

Species and
commercial
grade
Design values, lb/in2
Grading
rules
agency
Compression
parallel to
grain Fc
Modulus of
elasticity E
Dense
select
structural
2,250
1,900,000
SPIB
Select
structural
2,100
1,800,000
Nondense
select
structural
1,950
1,700,000
No. 1
dense
2,000
1,800,000
No. 1
1,850
1,700,000
No. 1
nondense
1,700
1,600,000
No. 2
dense
1,850
1,700,000
No. 2
1,650
1,600,000
No. 2
nondense
1,600
1,400,000
No. 3
975
1,400,000
Stud
975
1,400,000
Construction
1,800
1,500,000
Standard
1,500
1,300,000
Utility
975
1,300,000
Dense
select
structural
2,150
1,900,000
Select
structural
2,000
1,800,000
Nondense
select
structural
1,850
1,700,000
No. 1 dense
1,900
1,800,000
No. 1
1,750
1,700,000
No. 1
nondense
1,600
1,600,000
No. 2
dense
1,750
1,700,000
No. 2
1,600
1,600,000
No. 2
nondense
1,500
1,400,000
No. 3
925
1,400,000
Stud
925
1,400,000
Dense
select
structural
2,050
1,900,000
Select
structural
1,900
1,800,000
Nondense
select
structural
1,750
1,700,000
No. 1 dense
1,800
1,800,000
No. 1
1,650
1,700,000
No. 1 nondense
1,550
1,600,000
No. 2 dense
1,700
1,700,000
No. 2
1,550
1,600,000
No. 2 nondense
1,450
1,400,000
No. 3
875
1,400,000
Dense
select
structural
2,000
1,900,000
Select structural
1,850
1,800,000
Nondense
select
structural
1,750
1,700,000
No. 1 dense
1,750
1,800,000
No. 1
1,600
1,700,000
No. 1
nondense
1,500
1,600,000
No. 2
dense
1,650
1,700,000
No. 2
1,500
1,600,000
No. 2
nondense
1,400
1,400,000
No. 3
850
1,400,000
Dense
select
structural
1,950
1,900,000
Select
structural
1,800
1,800,000
Nondense
select
structural
1,700
1,700,000
No. 1
dense
1,700
1,800,000
No. 1
1,600
1,700,000
No. 1
nondense
1,500
1,600,000
No. 2
dense
1,600
1,700,000
No. 2
1,450
1,600,000
No. 2
nondense
1,350
1,400,000
No. 3
825
1,400,000

 

* For size factor Cf , appropriate size adjustment factors have already been incorporated in the tabulated design values for most thicknesses of southern pine dimension lumber. For dimension lumber 4 in thick, 8 in and wider, tabulated bending design values Fb shall be permitted to be multiplied by the size factor CF = 1.1. For dimension lumber wider than 12 in, tabulated bending, tension, and compression parallel-to-grain design values for 12-in-wide lumber shall be multiplied by the size factor CF = 0.9.

SOURCE: Table used by permission of the American Forest & Paper Association.

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