MISCELLANEOUS TABLES. 
137 
TABLE V. Continued, 
By which may be determined the depths of Ceiling Joists, Rafters, 
Floor Joists, Bridging Joists, Binding Joists, &c. ; the breadth 
being 2 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 fuel, 
clear 
bearing 
125-0 
144-7 
166-3 
190-1 
216-0 
244-1 
274-6 
307-5 
343-0 
mi-0 
DEPTH IN INCHES. 
1 
2 
3 
4 
5 
-72 
1- 43 
2- 16 
4'tio 
3- 58 
-75 
1- 50 
2- 25 
O.A 1 
O 01 
3- 76 
-79 
1- 57 
2- 36 
3 15 
3- 94 
-82 
1- 65 
2- 47 
4-12 
•86 
1- 72 
2- 58 
0 44 
4-30 
•89 
1- 79 
2- 68 
3- 58 
4- 47 
-93 
1- 86 
2- 79 
3- 72 
4- 65 
•97 
1- 93 
2- 90 
3- 87 
4- 83 
1 00 
2- 00 
3- 01 
4- 01 
5- 01 
1- 04 
2- 08 
3- 11 
4- 15 
5- 19 
6 
7 
8 
9 
10 
4- 30 
5- 01 
5- 73 
6- 44 
7- 16 
4- 51 
5- 26 
6- 01 
6- 76 
7- 52 
4- 72 
5- 51 
6- 30 
7- 09 
7-87 
4- 94 
5- 76 
6- 59 
7- 41 
8- 23 
5- 15 
6- 01 
6- 87 
7- 73 
8- 59 
5^37 
6- 26 
7- 16 
8- 05 
8-95 
5- 58 
6- 51 
7- 44 
8- 38 
9- 31 
6-80 
6- 76 
7- 73 
8- 70 
9- 66 
6- 01 
7- 02 
8- 02 
9- 02 
10-02 
6- 23 
7- 27 
8- 30 
9- 34 
10-38 
11 
12 
13 
*14 
15 
7- 87 
8- 59 
9- 31 
10-02 
10-74 
8- 27 
9- 02 
9-77 
10- 52 
11- 27 
8- 66 
9- 45 
10- 24 
11- 02 
11-81 
9-06 
9-88 
10- 70 
11- 53 
12- 35 
9-45 
10- 31 
11- 17 
12- 03 
12-89 
9-84 
10- 74 
11- 63 
12- 53 
13- 42 
W24 
11- 17 
12- 10 
13- 03 
13-96 
10- 63 
11- 60 
12- 56 
13 53 
14-50 
11- 02 
12- 03 
1303 
14- 03 
15- 03 
Tr42" 
12- 46 
13- 49 
14- 53 
15- 57 
16 
17 
18 
19 
20 
11- 45 
12- 17 
12- 89 
13- 60 
14- 32 
12-03 
12- 78 
13- 53 
14- 28 
15- 03 
12- 60 
13- 39 
14- 17 
14- 96 
15- 75 
T347" 
13- 99 
14- 82 
15- 64 
13- 74 
14- 60 
15- 46 
14- 32 
15- 21 
15-82 
15-46 
Multipliers to give the breaking weight of every Scantliug in each column 
respectively. 
7-34 
6-99 
6-67 
6-38 
6-12 
5-87 
5-65 
5-44 
5-24 
5-06 
* Example. — The greatest weight upon a floor being 140 lbs. per superficial foot; if the 
joists be 14 inches apart, from middle to middle, the weight upon one foot in length of a joist is 
140 X l'«2" = 163-3 fts. A joist 14 feet long 11-02 in. by 2 iu., with 166-3 Ibs^ weight to the 
foot, uniformly loaded, deflects in the middle ^ of an inch ; with the same weight, 11-02 in. 
by 2i in. deflects of an inch; 11*02 in. by 2^ in. deflects of an inch; 11-02 in. by 
2| in. deflects |.4 of an inch; and 11-02 in. by 3 in. deflects |4 of an inch. 
The breaking weight of a Red Pine joist 14 feet long 11-02 in. by 2 in., is 6-67 times the 
weight upon the floor, and the depth being the same, the strength increases as the breadth. 
