xxxviii 
EXAMPLES TO THE THIRD SERIES. 
A TABLE 
By which may be found the Scantlings of Red Pine Brest-summers 
and Purlins sufficient to carry, in the direction of the depth or 
greatest side, any given portion of the breaking weight. 
Pressure 
Pressure 
PRESSURE 
IN THE DIRECTION OF THE BREADTH. 
in the 
Greatest 
uniform. 
middle. 
side, or 
Depth 
•04 
•09 
•16 
•25 
•36 
•49 
-64 
•81 
1-00 
Product of the 
Length in Feet; by the 
incheSf 
oreaKing we 
LEAST SIDE, OR BREADTH 
IN INCHES. 
by the 
Factor for the pressure. 
4 
•80 
1^20 
1-60 
2-00 
2-40 
2^80 
3-20 
3-60 
4-OU 
512 
256 
4i 
•90 
1-35 
1-80 
2-25 
2^70 
3^15 
3-60 
4^05 
4-50 
729 
364 
5 
1-00 
l^oO 
2-00 
2^50 
3-00 
3^50 
4-00 
4-50 
5-00 
1000 
500 
tj 2 
MO 
1-66 
2-20 
2-76 
3-30 
3-85 
4-40 
4-95 
5-50 
1331 
665 
6 
1-20 
1^80 
2-40 
3^00 
3^60 
4^20 
4-80 
5-40 
6-00 
1728 
864 
6i 
1-30 
1-95 
2^60 
3^25 
3-90 
4^55 
5-20 
5-85 
6-50 
2197 
1098 
7 
1-40 
2-10 
2-80 
3-50 
4-20 
4-90 
5-60 
6-30 
7-00 
2744 
1372 
1-50 
2-25 
3^00 
3^75 
4^50 
5^25 
6-00 
6-75 
7-50 
3375 
1687 
g 
1-60 
2^40 
3^20 
4-00 
4^80 
5^60 
6-40 
7-20 
8-00 
4096 
2048 
8^ 
2 
1-70 
2-55 
3^40 
4^25 
5^10 
5^95 
6-80 
7-65 
8-50 
4913 
2456 
9 
1-80 
2-70 
3^60 
4-50 
5-40 
6^30 
7-20 
8-10 
900 
5832 
2916 
9i 
1-90 
2^85 
3-80 
4-75 
5^70 
6^65 
7-60 
8-55 
9-50 
6859 
3429 
10 
2-00 
300 
4^00 
5^00 
6^00 
7^00 
8-00 
9^00 
10-00 
8000 
4000 
2^10 
3-16 
4^20 
5-25 
6^30 
7-35 
8-40 
9-45 
10-50 
9261 
4630 
11 
2-20 
3-30 
4-40 
5^50 
6-60 
7^70 
8-80 
9^90 
11-00 
10648 
5324 
Hi 
2-30 
3^46 
4-60 
5-75 
6^90 
8-06 
9-20 
10^35 
11-50 
12167 
6083 
12 
2^40 
3^60 
4^80 
6-00 
7-20 
8^40 
9-60 
lO^SO 
12-00 
13824 
6912 
m 
2^50 
3^75 
5 '00 
6^26 
7^50 
8-75 
lO'OO 
11-26 
12-50 
15625 
7812 
13 
2^60 
3^90 
5-20 
6^50 
7-80 
9-10 
10-40 
11-70 
1300 
17576 
8788 
13i 
2-70 
4^05 
5-40 
6-75 
8-10 
9^45 
10-80 
12-15 
13-50 
19683 
9841 
14 
2^80 
4-20 
5^60 
7^00 
8-40 
9-80 
11-20 
12-60 
14-00 
21952 
10976 
14* 
2-90 
4^35 
5-80 
7^25 
8-70 
10-15 
11-60 
13-05 
14-50 
24389 
12194 
15 
3^00 
4-50 
6^00 
7^50 
9^00 
10-50 
12-00 
13-50 
15-00 
27000 
13500 
151 
3^10 
4-66 
6-20 
7^75 
9^30 
10-85 
12-40 
13-95 
1550 
29791 
14895 
16 
3-20 
4-80 
6-40 
8^00 
9-60 
11-20 
12-80 
14-40 
16-00 
32768 
16384 
Factors for the Pressure in the direction of the Breadth. 
Note. — The pressure 
in the direction of 
5. 
10 
5 
2. 
5 
10 
5 
10 
1. 
the Depth is 1. 
y 
y 
1"' 
y 
T' 
T' 
I. 
1 II. 
III. 
IV. 
V. 
VI. 
VII. 
VIII. 
IX. 
X. 
1 XL 
1 XII. 
