Building Code Compliance HB&G has updated our product testing to comply with changes to the Building Codes (IBC/IRC) and to the Acceptance Criteria for Fiberglass Columns. The 2 major changes that impacted PermaCast®Plus and PermaLite® were: • Eccentric Axial Loading – the new maximum allowable load values are based on eccentric (offset) axial load as opposed to concentric (centered) axial loading. • Increased Safety Factor – the safety factor on the allowable load was increased from 2.5 times to 5 times Eccentric loading of columns is not recommended by HB&G.
Round Wood Columns 6" 2,000 8" 3,200 10" 4,200 12" 5,100 PermaPost® 5" Colonial 1,300 6" Colonial 5,000 5" Square 5,000 6" Chamfered 5,000 Wood Porch Posts 4" 1,000 5" 3,000 6" 5,800 *Concentric loading Conforms with 2018 IBC/ IRC
Round Tapered PermaCast®Plus Plain and Fluted Eccentric Loading Bottom Avg. Allowable Avg. Ultimate Concentric Diameter Load (Lbs.) Load (Lbs.) Load (Lbs.) 6" 4,580 22,900 8,000 8"* 4,600 23,000 10,000 10"* 4,690 23,450 14,000 12"* 4,800 24,000 18,000 14" 7,800 39,000 20,000 16" 8,250 41,250 20,000 18" 10,000 50,000 20,000 20" 10,000 50,000 20,000 22" 10,000 50,000 20,000 24" 10,000 50,000 20,000 28" 10,000 50,000 20,000 30" 10,000 50,000 20,000 Square PermaCast®Plus Plain, Fluted, RoughSawn®, and Recessed Panel
6"* 8"*
5,100 5,150 5,640 5,900 8,500 9,500 4,590 4,670 4,750 7,000 7,000 7,000 9,000 9,000 9,000 7,000 8,000 8,000 8,000 8,000 8,000 8,000 9,000 9,000 9,000 9,000 9,000 3,000 3,000 3,000
25,500 25,750 28,200 29,500 42,500 47,500 22,950 23,350 23,750 35,000 35,000 35,000 45,000 45,000 45,000 35,000 40,000 40,000 40,000 40,000 40,000 40,000 45,000 45,000 45,000 45,000 45,000
8,000
Column Diameter (D)
10,000 14,000 18,000 20,000
MIN. BEAM WIDTH *D X 3/4
Column Diameter (D)
10"* 12"*
14" 16"
20,000 Round No-Taper PermaCast®Plus Plain and Fluted
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Shaded area to account for 75% concentrically.
Acceptable Applications
8"
10,000 14,000 18,000 20,000 20,000 20,000
10" 12" 14" 16" 18"
Column Diameter (D)
MIN. BEAM WIDTH *D X 3/4
Column Diameter (D)
24" 20,000 Craftsman Plain and RoughSawn® PermaCast®Plus
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Aluminum Bracket and screws available in installation kit. 2 total @ top. Unacceptable Applications
Shaded area to account for 75% concentrically.
10" x 5.5" x 66"
10,000 10,000 10,000 14,000 14,000 14,000 14,000 14,000 14,000 14,000 14,000 14,000 14,000 14,000
10" x 8" x 66"
10.25" x 7.5" x 7'
Column Diameter (D)
12" x 8" x 5' 12" x 8" x 6' 12" x 8" x 66" 12" x 10" x 6' 12" x 10" x 10' 14" x 12" x 9' 16" x 9" x 6'
MIN. BEAM WIDTH *D X 3/4
Column Diameter (D)
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Shaded area to account for 75% concentrically.
Acceptable Applications
16" x 9" x 8'
16" x 9" x 58" 16" x 12" x 6' 16" x 12" x 8'
Column Diameter (D)
MIN. BEAM WIDTH *D X 3/4
Column Diameter (D)
Square PermaLite® 6"
15,000 15,000 15,000
5,000 6,500 7,000
8"
Aluminum Bracket and screws available in installation kit. 2 total @ top.
Aluminum Bracket and screws available in installation kit. 2 total @ top. Unacceptable Applications
Shaded area to account for 75% concentrically.
10"
*Covered in accordance with ICC ESR-1361 / FL# 3102 Conforms with 2024 IBC/IRC Note - Eccentric (off-center) loading has a 5 times safety factor. - Eccentric (off-center) loading of columns is not covered by the warranty.
HB&G recommends following the installation instructions included with the product purchased. HB&G structural products conform to 2024 IBC/IRC.
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