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2. Lally column - Wikipedia

   en.wikipedia.org/wiki/Lally_column

   A Lally column is a round or square thin-walled structural steel column filled with concrete, [1] and oriented vertically to provide support to beams or timbers stretching over long spans. Lally columns are an engineered component and as such must be installed exactly as the design engineer specified.

3. Elastomeric bridge bearing - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_bridge_bearing

   Elastomeric bearing pads are the most economical solution used in construction of large span bridges and buildings. [1] [2] Elastomeric bearings are often used in applications other than bridges, for example, supporting buildings that are built on soil that may shift slightly and cause a concrete load to crack in the absence of a elastomeric ...

4. Underlay - Wikipedia

   en.wikipedia.org/wiki/Underlay

   In general, it is a layer which is underneath another layer, [2] so underlay is thus also used to describe many different surface-covering products. In vinyl flooring or " linoleum ", the underlay is the thin layer of plywood that is fastened over the structural subfloor to create a uniform, smooth platform for the sheet vinyl.

5. Strap footing - Wikipedia

   en.wikipedia.org/wiki/Strap_footing

   A strap footing is often used in conjunction with columns that are located along a building's property or lot line. Typically, columns are centered on column footings, but in conditions where columns are located directly adjacent to the property line, the column footings may be offset so that they do not encroach onto the adjacent property. [3]

6. Vibration isolation - Wikipedia

   en.wikipedia.org/wiki/Vibration_isolation

   Sometimes they serve as mounts for a concrete block, which provides further isolation. Pads or sheets of flexible materials such as elastomers, rubber, cork, dense foam and laminate materials. Elastomer pads, dense closed cell foams and laminate materials are often used under heavy machinery, under common household items, in vehicles and even ...

7. Reinforced concrete column - Wikipedia

   en.wikipedia.org/wiki/Reinforced_Concrete_Column

   A reinforced concrete column is a structural member designed to carry compressive loads, composed of concrete with an embedded steel frame to provide reinforcement. For design purposes, the columns are separated into two categories: short columns and slender columns.