SECOND SERIES TABLES OF WEIGHTS. 77 
TABLE XII. Continued. 
SCANTLINGS, 12 in. and 12^ inches Deep. 
The Weights in this table are — 
One-eighth of the breaking weight of Red Pine, uniformly loaded; or 
One-fourth of the same, when suspended from the middle. 
Size op 
Scantlings, 
in inches. 
length in feet. 
CLEAR 
BEARING. 
17 
18 
19 
20 
21 
22 
23 
24 
Depth. Breadth. 
weight in CWTS. 
12 X 2 
io UO 
14 40 
lo / i 
1 o.An 
13-09 
12 62 
1 O.A/ 1 
12 00 
12 X 21 
1 Q.n'^ 
ly uo 
1 o 00 
17 00 
Id 20 
ID 42 
14 /2 
1 A .AO 
14 Oo 
1 O. AA 
lo 00 
12 X 2| 
O 1 • 1 "7 
a£0 00 
lo 94 
lo 00 
17 14 
10 ,30 
10 DO 
1 A.AA 
10 00 
12 X 3 
^4 00 
zZ to 
21 bO 
20 57 
19-03 
lo /O 
1 O.AA 
lo 00 
12 X 3i 
29-64 
28-00 
26-52 
25-20 
24-00 
22-90 
21-91 
21-00 
12 X 4 
33-88 
32-00 
30-31 
28-80 
27-42 
26^18 
25-04 
24-00 
12 X 4i 
38-11 
36-00 
34-10 
32-40 
30^85 
29-45 
28-17 
27-00 
12 X 5 
42-35 
40-00 
37-89 
36-00 
34^28 
32-72 
31-30 
30-00 
12 X 6i 
46-58 
44-00 
41-68 
39-60 
37^71 
36-00 
34-43 
33-00 
12 X 6 
50-82 
48-00 
45-47 
43-20 
4M4 
39-27 
37-56 
36-00 
12 X 7 
69-29 
56-00 
53-05 
50-40 
48-00 
45-81 
43-82 
42-00 
*12X 8 
67-76 
64-00 
60-63 
57-60 
54-85 
52-36 
60-08 
48-00 
12 X 9 
76-23 
72-00 
68-21 
64-80 
61-71 
58-90 
66-34 
54-00 
12X10 
84-70 
80-00 
75-78 
72-00 
68-57 
65-45 
62-60 
60-00 
12X11 
93-17 
88-00 
83-36 
79-20 
75-42 
72-00 
68-86 
66-00 
12X12 
101-64 
96-00 
90-94 
86-40 
82-28 
78-54 
75-13 
72^0 
12X12* 
105-88 
100-00 
94-73 
90-00 
85-71 
81-81 
78-26 
75-00 
12X13 
110-11 
104-00 
98-52 
93-60 
89-14 
86-09 
81-39 
78-00 
12X14 
118-58 
112-00 
106-10 
100-80 
96-00 
91-63 
87-65 
84-00 
12X15 
127-05 
120-00 
113-68 
108-00 
102-85 
98-18 
93-91 
90-00 
Deflection in inches of Red Pine 12 inches deep, loaded with the weights in this table. 
Weight uijiform- 1 
ly loaded. f 
-396 
•444 
•494 
-548 
-604 
•663 
-725 
-789 
\Vt. suspended ) 
from the middle. J" 
-633 
-710 
-791 
•877 
-966 
1-061 
1-159 
1-262 
For Scantlings 12* inches deep, multiply the weights in this table 
by |-f^|= 1-08507, and the deflections by f f-=-96.f 
* Example 1. — Red Pine 12 in. by 8 in., 20 feet long, vrith 57"60 cwts. uniformly loaded, 
{one-eighth the breaking weight) deflecis "548 of an inch ; and with 57'CO cwts. suspended 
from the middle, (one-fourth the breaking weight) the deflection is 'S?? of an inch. 
f* Example 2.— Red Piue 12| in. by 8 in., 20 feet long, with 57-6 x 1-085 = 62-50 cwts. 
uniformly loaded, (oue-eighth the breaking weight) deflects '548 x -96 = -526 of an inch; and 
with 62-50 cwts. suspended from the middle, (oue-fourth the breaking weight) the deflection 
is -877 X -96 = -842 of an inch. 
L 
