144 
MISCKLLANEOUS TA1$LKS. 
TABLE IX. 
By wWch may be deteraiined the depths of Rafters, Floor Joists, 
Bridging Joists, Binding Joists, &c.; the breadth being 3 inches, 
and the deflection of an inch to the foot, when uniformly loaded 
with the weights in this table. 
weight in pounds upon each foot in length. 
Length 
in feet, 
cleai' 
42-87 
52-73 
64-00 
76-76 
91-12 
107-1 
125-0 
144-7 
166-3 
190-1 
bearing. 
DEPTH IN INCHES. 
1 
•47 
-53 
•56 
-59 
•63 
•66 
•69 
-72 
2 
-88 
•94 
1-00 
1-06 
1-13 
1-19 
1-25 
1-31 
1-38 
1-44 
3 
1-31 
1 
-41 
1-50 
1-59 
1^69 
1-78 
1-88 
1-97 
2-06 
2-16 
4 
1-75 
] 
•88 
2-00 
2-13 
2-25 
2-38 
2-50 
2-63 
2-75 
2-88 
6 
2-19 
>-35 
2-50 
2-66 
2-81 
2-97 
313 
3-28 
3-44 
3-60 
6 
2-63 
2-81 
3-00 
3-19 
3-38 
3-56 
3-75 
3-94 
4-13 
4-31 
7 
3-06 
3-28 
3-50 
3-72 
394 
4-16 
4-38 
4-60 
4-82 
5-03 
8 
3-50 
3-75 
4-00 
4-25 
4-50 
4-75 
5-00 
5-25 
5-50 
5-75 
9 
3-94 
4-22 
4-50 
4-78 
5-07 
5-35 
5-63 
5-91 
6-19 
6-47 
10 
4-38 
4-69 
5-00 
5-32 
5-63 
5-94 
6-25 
6-57 
6-88 
7-19 
11 
4-82 
5-16 
5-50 
5-85 
6-19 
6-53 
6-88 
7-22 
7-57 
7-91 
12 
5-25 
5-63 
6-00 
6-38 
6-75 
7-13 
7-50 
7-88 
8-25 
8-63 
13 
5-69 
6-10 
6-50 
6-91 
7-32 
7-72 
813 
8-54 
8-94 
9-35 
14 
6-13 
6-57 
7-00 
7-44 
7-88 
8-32 
8-75 
9-19 
9-63 
10-07 
15 
6-57 
7-04 
7-50 
7-97 
8-44 
8-91 
9-38 
9-85 
10-32 
10-79 
*16 
7-00 
7-50 
8-00 
8-50 
9-00 
9-51 
1001 
10-51 
11-01 
11-51 
17 
7-44 
7-97 
8-50 
9-04 
9-57 
10-10 
10-63 
11-16 
11-69 
12-23 
18 
7-88 
8-44 
9-01 
9-57 
10-13 
10-69 
11-26 
11-82 
12-38 
12-94 
19 
8-32 
8-91 
9-51 
10-10 
10-69 
11-29 
11-88 
12-48 
13-07 
13-66 
20 
8-75 
9-38 
10-01 
10-63 
11-26 
11-88 
12-51 
13-13 
13-76 
14-38 
Multipliers to 
give the breaking weight of every Scantling in each colnmn respectively. 
12-01 
11-21 
1 10-51 
9-89 
9-34 
8-85 
8-40 
8-00 
7-64 
.7-31 
* Example.— A joist 16 feet long, ll'Ol in. by 3 in., with 166-3 ibs. weight to the foot, 
imiformly loaded, deflects in the middle ^ or |. of an inch. 
The breaking weight of a Red Pine joist 16 feet long, H'Ol in. by 3 in., is 16 x 166-3 x 
7-01 = 20328 ibs. = 181-5 cwts. uniformly loaded, or SO'? cwts. suspended from the middle. 
