TABLE XX. 
Sizes of Lattice Bars for channels of various depths and spaced at various distances. 
D=z depth of channel and d = distance between inner faces of channels. If the value 
of d lie between the values given, the size of lattice bars is to be taken from the column 
containing the next largest value of d. t 
D 
Sizes of Lattice Bars. 
d=D. 
d=i .25 D. 
d=i.5 
D. 
d=i_75 D. 
d=2 
D. 
4" 
ず 
rx 
ず 
r x 
ir 
ず 
5" 
Vx 
ず 
r x 
ir 
rx 
ii' 
tx 
中 
Vx 
6 r 
ぐ X 
ir 
rx 
ir 
rx 
ir 
r x 
ir 
Vx 
a" 
r 
rx 
ず 
r x 
iF 
去 " X 
a" 
if 
8^ 
^ X 
中 
X で 
A"X 
味 , 
r 
か X 
才 
■Ä"x 
Ä ,; x 
ボ 
ず 
iTX 
ず 
1 。， 
が 'X 
7\ r - 
tTx 
舟 " X 
ず 
11* 
l^x 
才 
rx 
r x 
迹 ’ 
I5 # 
rx 
rx 
烀 ’ 
