85 Red Brass
Copper
Copper
Copper
Ex. Strong
Std. Wt.
Diameter
& SPS
Tube
Tube
Tube
Steel Pipe
Steel Pipe
Inches
Copper Pipe
Type M
Type L
Type K
80S
40S
1
6'-6"
6'-6"
5'-0"
4'-9"
4'-6"
5'-6"
1
7'-6"
7'-9"
5'-9"
5'-6"
5'-6"
6'-6"
2
8'-6"
8'-6"
6'-6"
6'-6"
6'-3"
7'-0"
2
9'-3"
9'-6"
7'-3"
7'-0"
7'-0"
8'-0"
3
10'-3"
10'-6"
7'-9"
7'-6"
7'-6"
8'-9"
3
11'-0"
11'-0"
8'-3"
8'-3"
8'-0"
9'-3"
4
11'-6"
11'-9"
9'-0"
8'-9"
8'-6"
9'-9"
5
12'-9"
13'-0"
10'-0"
9'-6"
9'-6"
10'-9"
6
13'-9"
14'-0"
10'-9"
10'-6"
10'-3"
11'-6"
8
15'-6"
16'-0"
10
17'-0"
17'-6"
12
18'-3"
19'-0"
*Maximum unsupported or unbraced lengths (L) are based on water-filled pipes with
period (Ta) equal to 0.05 Sec. Where
EIg
1 inch = 25mm
L2 = 0.50π a
, in. or mm
T
1 foot = 0.3m
w
E = Modulus of Elasticity of Pipe, psi or MPa
Moment of Inertia of Pipe, in4 or mm4
I=
w=
Weight Per Unit Length of Pipe and Water, lbs/in. or N/mm
Figure 10-5. Maximum span for rigid pipe pinned-pinned.
10 22
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