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Round Tapered Plain Column

Round Tapered Plain Column

Royal Corinthian manufactures round tapered porch columns from 3 composite materials that will last for generations. We offer these columns in RoyalCast™ Composite Fiberglass, RoyalStone™ Synthetic Stone, and RoyaLite™ FRP Fiberglass. All of the sizes below are available in all three materials. We offer round tapered columns from diameters as small as 6” to as wide as 42”. Some of our porch columns reach up to 30 feet in height. The majority of our round tapered columns come with a capital support ring (E) that supports the weight of a Tuscan cap. 

In instances where other capitals are used, the support ring is removed. Stock columns, 6” to 12”, do not have a cap support ring. If you are using these columns as column covers, please note that the “Columns to Surround Structural Supports” chart corresponds to our RoyalCast™ columns only. In general, RoyalStone™ columns will have a smaller inside diameter due to a thicker wall and RoyaLite column covers will have a larger inside diameter due to a thinner wall. Please request a specific shop drawing based on your material of choice or call or email if you need an exact inside diameter for any of our columns. Similarly, the load bearing specifications chart is for RoyalStone and RoyalCast columns; RoyaLite columns, if factory assembled, will bear significantly less weight which is why they are most suitable as column covers.

Specification
    • 6” diameter: Load capacity up to 8,000 lbs
    • 8” diameter: Load capacity up to 10,000 lbs
    • 10” diameter: Load capacity up to 14,000 lbs
    • 12” diameter: Load capacity up to 18,000 lbs
    • 14” diameter: Load capacity up to 20,000 lbs
    • 16” diameter: Load capacity up to 20,000 lbs
    • 18” diameter: Load capacity up to 20,000 lbs
    • 20” diameter: Load capacity up to 20,000 lbs
    • 22” diameter: Load capacity up to 20,000 lbs
    • 24” diameter: Load capacity up to 20,000 lbs
    • 28” diameter: Load capacity up to 20,000 lbs
    • 30” diameter: Load capacity up to 20,000 lbs
    • 36” diameter: Load capacity up to 20,000 lbs
    • 42” diameter: Load capacity up to 20,000 lbs
Technical specification
  • Unique ref.round-tapered-plain-column
  • Product familyColumns
  • Product groupRound
  • TypeObject (single object)
  • Date of publishing2025-11-12
  • Edition number1
Related
  • Material mainFiber Glass
  • Designed inUnited States
  • Manufactured inUnited States
Classification
  • BIMobject CategoryLandscaping - Other Landscaping
  • Uniclass 2015 CodeEF_20_30
  • Uniclass 2015 DescriptionColumns
  • OmniClass Number23-13 35 11 13 11
  • OmniClass TitleColumns

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States
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