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2. Hollow structural section - Wikipedia

   en.wikipedia.org/wiki/Hollow_structural_section

   For example, barriers around parking areas made of HSS are often filled, to at least bumper height, with concrete. This is an inexpensive (when replacement costs are factored in) way of adding compressive strength to the bollard, which can help prevent unsightly local denting, though it does not generally significantly increase the overall ...

3. Lally column - Wikipedia

   en.wikipedia.org/wiki/Lally_column

   The steel shell of a Lally column is filled with concrete, which carries a share of the compression load, and helps prevent local buckling of the shell. The advantage of a Lally column over a conventional structural steel is that it can be cut it to length on a construction site with simple hand tools such as a plumber's pipe cutter or a ...

4. Texas wants to buy surplus border wall parts but U.S ... - AOL

   www.aol.com/news/texas-wants-buy-surplus-border...

   The Lonestar State had shown interest in purchasing the steel bollards used in the construction of the border wall at the U.S.-Mexico border, but it was too late.

5. Municipal castings - Wikipedia

   en.wikipedia.org/wiki/Municipal_castings

   Drainage Grate Municipal Casting. Municipal castings refers to many products, including: access hatches; ballast screens; benches (iron or steel); bollards; cast bases; cast iron hinged hatches, square and rectangular; cast iron riser rings; catch basin inlet; cleanout/monument boxes; construction covers and frames; curb and corner guards; curb openings; detectable warning plates; downspout ...

6. BS 5400 - Wikipedia

   en.wikipedia.org/wiki/BS_5400

   BS 5400-1:1988 Steel, concrete and composite bridges. General statement. BS 5400-2:2006 Steel, concrete and composite bridges. Specification for loads. BS 5400-3:2000 Steel, concrete and composite bridges. Code of practice for design of steel bridges. (This part of standard is being partially replaced) BS 5400-4:1990 Steel, concrete and ...

7. Retaining wall - Wikipedia

   en.wikipedia.org/wiki/Retaining_wall

   Today, taller retaining walls are increasingly built as composite gravity walls such as: geosynthetics such as geocell cellular confinement earth retention or with precast facing; gabions (stacked steel wire baskets filled with rocks); crib walls (cells built up log cabin style from precast concrete or timber and filled with granular material). [9]