What's the Difference? Precise Terminology for the Home Inspector
What's the Difference? Precise Terminology for the Home Inspector October Home Inspections 866 628-1084
What’s the Diff? Series
Precise Terminology for the Home Inspector

by Arlene Puentes, October Home Inspections

What's the Difference Between an Adjustable Metal Column and a Lally Column?

They're both made of metal. An adjustable metal column is hollow and has a large adjusting screw positioned either at the top or the bottom. Often you won't see that screw because it's positioned downward and encased in the poured concrete.

The term lally column, strictly speaking, was a proprietary name for the concrete filled steel column invented by John Lally. A lally column has no adjusting screw.

However, lally columns or lolly columns are terms that are widely used in my area (Hudson Valley, NY) and in various construction dictionaries for any steel column.

For further information about this topic see my article Inspecting Adjustable Steel Columns.

All text and photos © Arlene Puentes
Do not copy


More from the "What's the Diff" Series:

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Mortar And Concrete?
Masonry And Concrete?
Cinder Blocks and Concrete Blocks?
A Pier and a Post and a Column?
A Check and a Crack in a Wood Framing Member?
Yankee Gutters and Built In Gutters?
A Ridge Beam and a Ridge Board?
A Joist and an I-joist?
Stucco and EIFS and Fiber Cement Siding?

Building Science Research and Information

How to Inspect Adjustable Steel Columns

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co-written with Daniel Friedman.

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