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2. Hollow structural section - Wikipedia

   en.wikipedia.org/wiki/Hollow_structural_section

   In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...

3. Mexico–United States border wall - Wikipedia

   en.wikipedia.org/wiki/Mexico–United_States...

   Over the 2019 Memorial Day weekend, the organization constructed a 0.5-mile (0.80 km) to 1-mile (1.6 km) "weathered steel" bollard fence near El Paso on private land adjoining the U.S.–Mexico border using $6–8 million of the donated funds. Kolfage's organization says it has plans to construct further barriers on private lands adjoining the ...

4. 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 ...

5. Border barrier - Wikipedia

   en.wikipedia.org/wiki/Border_barrier

   1979, low concrete wall (2.5–3m tall) with barbed wire as part of initial security measures; 2009 Underground steel barrier (10–11 km long, 18m deep) to block smuggling tunnels. 3.1: Anti-terrorism and anti-illegal immigration [26] [27] Estonia–Russia barrier: Estonia and Russia: Estonia: 2018: 110: Anti-intrusion, illegal trade and ...

6. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. Jersey barrier - Wikipedia

   en.wikipedia.org/wiki/Jersey_barrier

   Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.