Carpentry

by Ira Samuel Griffith

Load in Tons

Length in ft.	Size in inches
	2 × 6	3 × 6	4 × 6	6 × 6	8 × 8
6	1	1½	2	3	5½
8	¾	1	1½	2½	5
10		¾	1¼	2	4½
12		½	1	1½	3
14			½	1	2½
16				½	2
18					1

STEEL I BEAMS

Load in Tons

Length in ft.	Size in inches
	6	8	12
10	7	14	18
12	6	12	16
14	5	10	14
16	4	8	12
18	2	6	10
20		4	8
22		2	6
24			4

BRICK PIERS

Load in Tons

Heigth in ft.	Size in inches
	6 × 6	6 × 8	8 × 8	8 × 12	12 × 12	12 × 16	16 × 16
6	2	3	4	5	6	7	9
8	1½	2½	3½	4¾	5½	6	8
10	1	2	3	5	5½	6	7

STRESSES FOR STRUCTURAL TIMBERS

WORKING UNIT STRESSES USED IN DRY LOCATIONS