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Aluminum Column Dimensions & Load Bearing Data (Round)

Nominal Diameter Actual OD (A Above) Actual ID Max. Square Encaseable No. Staves Standard Lengths (Ft)* Load Lbs.** Tested Length
6" 5-5/8" 4-3/4" 3-1/2" 3 8, 9, 10, 12' 16,000 8'
8" 8" 7-1/8" 5-1/4" 3 8, 9, 10, 12, 14, 16 19,000 8'
10" 10" 8-7/8" 6-1/4" 4 8, 9, 10, 12, 14, 16, 18, 20' 28,000 12'
12" 11-1/4" 9-7/8" 6-7/8" 5 8, 9, 10, 12, 16, 18, 20' 30,000 12'
15" 14-3/8" 13-1/8" 9-1/4" 6 16, 18, 20, 24' 34,000 12'
18" 18" 16" 11-5/16" 6 16, 18, 20, 24' 38,000 18'
24" 24" 22" 15-9/16" 6 24' 58,000 18'
30" 30" 28" 19-13/16" 8 24' 58,000 18'
*Subject to availability.  Unlisted lengths available upon request.        
**Includes safety factor.  Wraparound applications of 10" diameter and greater are non-load bearing    

Standard Round

Nominal Diameter X (ID) Y (OD) Z (Height)
6" 5-5/8" 7-3/4" 1-15/16"
8" 8" 10" 2-1/16"
10" 10" 12-1/4" 2-7/16"
12" 11-1/4" 14-1/8" 3"
15" 14-3/8" 17-7/8" 3-1/2"
18" 18" 21-5/8" 3-3/4"
24" 24" 28" 4-3/8"
30" Not Available

Doric Round

Nominal Diameter X (ID) Y (OD) Z (Height)
6" Not Available
8" 8" 12-1/4" 3-3/4"
10" 10" 14-1/2" 4-1/4"
12" 11-1/4" 17" 5"
15" 14-3/8" 20-3/4" 5-3/4"
18" 18" 25-1/2" 6-1/2"
24" 24" 31-3/4" 7-1/8"
30" 30" 43-5/8" 9-1/2"

Scamozzi Round (Cap)

Nominal Diameter X (ID) Y (OD) Z (Height)
6" Not Available
8" 8" 12" 5-1/8"
10" 10" 12" 5-1/8"
12" 11-1/4" 14-1/2" 6-1/2"
15" 14-3/8" 18-1/2" 7-1/2"
18" 18" 27" 7-3/4"
24" 24" 38-1/2" 14-3/8"
30" Not Available

Corinthian Round (Cap)

Nominal Diameter X (ID) Y (OD) Z (Height)
6" Not Available
8" 8" 15-3/4" 10"
10" 10" 15-3/4" 10"
12" 11-1/4" 20" 12-1/2"
15" 14-3/8" 23-1/2" 15"
18" 18" 26-1/2" 18"
24" 24" 35-1/2" 25"
30" Not Available