Page 219 - Pressure Vessel Design Manual

Design of Vessel Supports 197

~ ~~
Base Plate

7J

M Maximum
bearing load
b.

f, P1
Figure 3-71. Loading diagram of base plate with gussets and chairs.

Type 1: Without Chairs or Gussets

K = from “Anchor Bolts.”
e=
f, =froin “Anchor Bolts.”
(1 =
e Beriding moment per unit length.

M,, = 0.5f,12
Figure 3-72. Dimensions of various base plate configurations

2Kd + w
b,, = fc( 2Kd ) < 3, (see Table :3-35) a With twice as mny gussets (1.9 anchor lxh.

M, = greater of M, or M, from Table 3-36

Type 2: With Gussets Equally Spaced, Straddling
Anchor Bolts

0 n7itl1 snnie niiiizher CIS anchor bolts.
Type 3 or 4: With Anchor Chairs or Full Ring

e Between gussets.

P = F,R,
Pb
M,, =greater of M, or M, from Table 3-36 M” =x