136 
MISCELLANEOUS TABLES. 
TABLE V. 
By which may be determined the depths of CeiHng 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 I'eetf 
clear 
15-62 
20-79 
27-00 
34-32 
42-87 
52-73 
64-00 
76-76 
91-12 
107^ 17 
be&ring. 
DEPTH IN INCHES. 
■~T 
2 
3 
4 
5 
•36 
•72 
1-07 
1-79 
•39 
•79 
M8 
L O 1 
1-97 
•43 
'86 
1- 29 
1 •70 
2- 15 
•47 
•93 
1- 40 
1 OO 
2- 33 
•50 
1-00 
1- 50 
A \J\) 
2- 51 
•54 
P07 
1^61 
9- 1 
2-68 
•57 
M5 
1- 72 
9-90 
2- 86 
•61 
1-22 
1-83 
3-04 
•64 
1-29 
1-93 
3-22 
•68 
1- 36 
2- 04 
9-79 
Z iZ 
3- 40 
6 
7 
8 
9 
10 
2-51 
2- 86 
3- 22 
3-58 
^6" 
2- 76 
3- 15 
3-54 
3-94 
3-01 
3-44 
3- 87 
4- 30 
2- 79 
3- 26 
3- 72 
4- 19 
4-65 
~3~oT 
3-51 
401 
4^51 
5-01 
T22 
3- 76 
4- 30 
4- 83 
5- 37 
344 
4-01 
4- 58 
5- 15 
5-73 
~3"m65 
4-26 
4- 87 
5- 48 
6- 08 
"3^7" 
4- 51 
5- 15 
5- 80 
6- 44 
4-08 
4- 76 
5- 44 
6- 12 
6-80 
11 
12 
13 
14 
15 
3- 94 
4- 30 
4- 65 
5- 01 
5-37 
^3' 
4- 72 
5- 12 
5-51 
5-91 
4- 72 
5- 15 
5- 58 
6- 01 
6-44 
5- 58 
6- 05 
6^51 
6-98 
"5^7 
6-01 
6- 51 
7- 01 
7-52 
5- 91 
6- 44 
6- 98 
7- 52 
8- 05 
~6¥o' 
6- 87 
7- 44 
8^02 
8^59 
7-30 
7- 91 
8- 52 
9- 13 
7-09 
7- 73 
8- 38 
9- 02 
9-66 
8-16 
8-84 
9^52 
10-20 
16 
17 
18 
19 
20 
5- 73 
6- 08 
6-44 
6- 80 
7- 16 
~6¥o 
6- 69 
7- 09 
7-48 
7-87 
"¥87 
7-30 
7- 73 
8- 16 
8-59 
7-44 
7- 91 
8- 38 
8- 84 
9- 31 
8-02 
8- 52 
9- 02 
9-52 
1002 
8- 59 
9- 13 
9-67 
10-20 
10-74 
9-16 
9-74 
10-31 
10- 88 
11- 45 
9-74 
10-34 
10- 95 
11- 56 
12- 17 
10-31 
10-95 
11 60 
12-24 
1289 
1^8' 
11- 56 
1-2-24 
12- 92 
13- 60 
Multipliers to give the breaking weiyht of every Scantling in each column respectively. 
14-69 
13-35 
12-24 
11-30 
10-49 
9-79 
9-18 
8-64 
8-16 
7-73 
*i* The greatest weight upon the floor of a crowded room is 120 ibs. per superficial foot, to 
which, in determining the scantlings, is to he added the weight of the floor and ceiling. 
The greatest weight will generally vary from about 140 fts. to 160 fbs. per foot super- 
ficial, and the hrealdng weight of every floor liable to be so weighted, should be not 
less than 4 times that weight, viz. 5 cwts. to the foot, or upwards. 
Joists of smaU scantlings, in short lengths, should be increased in the depth or breadth, or 
in both, according to the liability to decay, from the situation in which they may be placed. 
