A 90 ° corner joint most frequently used for the top rail of guardrail. It can also be considered for the top corner joint of benches, work tables, and other rectangular structures.
Nominal Pipe Size
inches
lbs
Type
A
B
C
D
E
F
G
H
20-4
1/2"
1.34
0.37
20-5
3/4"
1.61
0.84
20-6
1"
1.81
1.06
20-7
1 1/4"
2.36
1.79
20-8
1 1/2"
2.68
2.49
20-9
2"
3.31
4.01
