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m r2.7.1) (Robot: Modifying fa:سازههای فلزی توخالی to fa:مقاطع ساختمانی توخالی |
m Relinked "Lally column" and removed unencyclopedic commentary on the relative merits of people and their pronunciation. |
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==Filled HSS==
HSS is often filled with concrete to improve fire rating, as well as robustness. When this is done, the product is referred to as a "Lally column" after its inventor John Lally of Waltham, Massachusetts.
== See also ==
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