Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-9 - Square Columns-Unbraced Rough Lumber-Not Surfaced

Suggested Maximum Loads in Pounds -- 1,000 Pounds per Square Inch Douglas Fir

SIZE OF COLUMN CROSS SECTION

Length in Feet 4"x4" 6"x6" 8"x8" 10"x10" 12"x12" 14"x14" 16"x16"
5 15,300 36,000 64,000 100,000 144,000 196,000 256,000
6 14,600 35,400 64,000 100,000 144,000 196,000 256,000
7 13,500 34,900 63,400 100,000 144,000 196,000 256,000
8 11,800 34,100 62,900 100,000 144,000 196,000 256,000
9 9,600 33,000 62,300 98,900 144,000 196,000 256,000
10 7,800 31,500 61,500 98,400 144,000 196,000 256,000
11 6,400 29,400 60,200 97,600 142,400 196,000 256,000
12 5,400 26,700 58,700 96,700 141,700 194,200 256,000
14 use a 20,100 54,300 93,800 139,600 192,800 258,700
16 larger size 15,400 47,400 89,400 136,600 190,700 251,900
18 use a 38,400 83,100 132,200 187,300 249,300
20 larger size 31,100 74,200 126,100 183,000 246,000

Notes

Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-9
1. Change without regulatory effect correcting error in Plate B-9 filed 5-28-91 pursuant to section 100, Title 1, California Code of Regulations (Register 91, No. 27).

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