80 SECOND SriRIES — TABLES OF WEIGHTS. 
TABLE XIII. Continued. 
SCANTLINGS, 13 in. and 13^ 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. 
SiZB OP 
Scantlings, 
in inches. 
LENGTH IN FEET, 
CLEAR 
BEARING. 
17 1 
18 1 
19 1 
20 1 
21 1 
22 1 
23 
1 24 
Depth. Breadth. 
WEIGHT IN CWTS. 
13 X 2 
19"88 
18*77 
17"78 
16^90 
16*09 
15*36 
14'69 
14^08 
13X 2h 
24*85 
23*47 
22^23 
21*12 
20*1 1 
19*20 
18*36 
17'60 
13X 3 
29*82 
28*16 
26*68 
25*35 
24*14 
23*04 
22*04 
2P12 
13 X 3i 
34*79 
32*86 
31*13 
29*57 
28*16 
26*88 
25*7 1 
24"64 
13 X 4 
39*76 
37*55 
35*57 
33*80 
32*19 
30-72 
29-39 
28-16 
13 X 4i 
44*73 
42-25 
40*02 
38*02 
36*21 
34-56 
33*06 
31*68 
13 X 5 
49*70 
46*94 
44-47 
42*25 
40*23 
38-40 
36*73 
35*20 
13 X 6h 
54*67 
51*63 
48*92 
46*47 
44*26 
42*25 
40*41 
38-72 
13 X 6 
59*64 
56*33 
53*36 
50*70 
48*28 
46*09 
44-08 
42*25 
13 X 6i 
64*61 
61*02 
57*81 
54*92 
52*30 
49^93 
47*76 
45*77 
13 X 7 
69*58 
65*72 
62*26 
59*15 
56*33 
53^77 
51-43 
49*29 
13 X 8 
79*52 
75*11 
71*15 
67*60 
64*38 
6r45 
58*78 
56*33 
*13X 9 
89*47 
84*50 
80*05 
76*05 
72*42 
69*13 
66*13 
63*37 
13X10 
99*41 
93*88 
88*94 
84*50 
80-47 
76-81 
73*47 
70^41 
13X11 
109*35 
103*27 
97*84 
92-95 
88*52 
84*50 
80*82 
77^45 
13X12 
119*29 
112*66 
106*73 
101*40 
96*57 
92-18 
88-17 
84*50 
13X13 
129*23 
122*05 
1 15*63 
109*85 
104*61 
99*86 
95-52 
91*54 
13X131 
134*20 
126*75 
120*07 
114*07 
108*64 
103*70 
99*19 
95*06 
13X14 
139*17 
131*44 
124*52 
118*30 
112*66 
107*54 
102*86 
98*58 
13X15 
149*11 
140*83 
133*42 
126*75 
120*71 
115-22 
110*21 
105*62 
Deflection in inches of Red Pine 13 inches deep, loaded with the weights in this table. 
Weight miifuim- ) 
ly loaded. J 
•365 
*410 
•456 
•506 
•558 
-612 
•669 
•728 
Wt. suspended ) 
from the middle, f 
*585 
•655 
•730 
*809 
*892 
•979 
1*070 
1*165 
For Scantlings 13|^ inches deep, multiply the weights in this table 
by ^=1*0784, and the deflections by =-963.t 
* Example 1. — Red Pine 13 in. by 9 in., 21 feet long, with 72-42 cwts. uniformly loaded, 
(one-eighth the breaking weight) deflects -558 of an inch; and with 72*42 cwts. suspended 
from the middle, (one-foui-th the breaking weight) the deflection is -892 of an inch. 
f* Example 2.— Red Pine, 13| in. by 9 in., 21 feet long, with 72-42 x 1-0784 = 78-10 
cwts. uniformly loaded, (one-eighth the breaking weight) deflects -558 x -963 = -537 of an 
iuch ; and with 78^10 cwts. suspended from the middle, (one-fourth the breaking weight) the 
deflection is -892 x •963 = *859 of an inch. 
