User Guide

ADDENDUM: TABLE 2—ALLOWABLE LOADS POLY-CLASSIC COLUMNS*
Columns Type and
Nominal Size (in)
Maximum
Lenth (ft-in)
Allowable Load (lbf)
Concentric
Eccentric Loadings
Maximum “e” (in) Allowable Load (lbf)
10 - 0 13200
11 - 0
11 - 0 20000 4
1
/
4
18960
15 - 0 20000 4
1
/
4
13200
16 - Round non-tapered
14 × 14 Square 16 - 0 18000 4
1
/
4
17320
18 - Round non-tapered
20 - Round non-tapered
24 - Round non-tapered
*ICC-ES Legacy Report data not available for these sizes.
20000 4
1
/
4
20000 4
1
/
4
9040
100
Example of eccentric loading:
(8" tapered column, 4x beam):
3 1/4"
6 1/2"
Maximum "e" - beam
offset from center.
Example of Concentric Loading
(8" tapered column, 8x beam):
6 1/2"
7 1/4"
See tables for details.
Install columns with concentric loading
to achieve maximum load bearing
capacity. This means the overhead
beam or surface must completely
cover the top of the column shaft.
Column Shaft
Trim bottom to
match slope of deck
Load capacity values are only valid if there
is uniform contact between the full area of
the column shaft bottom and the surface it
is installed on. If the surface is sloped (often
done to provide runoff), then the bottom
of the shaft must be trimmed to match
the slope.