Lally column are named after the American inventor Joseph Lally. Lally owned the company which started the construction of those columns. This was in Waltham, Massachusetts.
Lally columns are adjustable steel columns. They can be adjusted upward or downward and they can temporarily support a weight put on its top. A renovator or a builder may use the Lally column to support the roof of the house when the inside walls are removed for the safety of the structure. The column can be removed after the desired renovation work is done. The structure of the column is made of thin steel which is provides support to heavy things for a long time span. The concrete filled inside the column provides strength to the pillar to bear the weight.
The widespread use of the Lally columns has made life easier for the construction workers as it offers great flexibility in cutting the height according to the requirement with simple hand tools .These columns are not for permanent usage. They offer less strength and durability steel columns. The designs of these lally column has changed a great deal with the passage of time. The lallies that were used earlier had a much thicker shell, which was approximately ¼” while the lallies used these days have a thickness of approximately .06”. Hence, there is a concern about durability. Also, these structures are exposed to the possibility of corrosion and damage since the outer shell is made of steel which may be subjected to rust. Lally columns nowadays are primarily as somewhat stronger and more durable substitutes for support systems made out of wood. They are sometimes also used with steel beams. Lally columns can be used by homeowners and remodelers use these on a permanent basis. They are often used to support sagging floor beams. Lally columns range from about 12 inches to 12 feet tall. They are also referred to as an adjustable building support column, steel column, structural columns & piers, telepost or red-I-Posts. They tend to be designed as permanent building columns. They are fully assembled self-contained units. A beam plate or saddle plate is required at the top to secure the column to a support frame and also in a lally column, the adjustment nut and screw should be placed at the footer.
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