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2. SAFER barrier - Wikipedia

   en.wikipedia.org/wiki/SAFER_barrier

   The Steel And Foam Energy Reduction Barrier (SAFER Barrier), sometimes generically referred to as a soft wall, is a technology found on oval automobile race tracks and high-speed sections of road and street tracks, intended to absorb and reduce kinetic energy during the impact of a high-speed crash, and thus, lessen injuries sustained to ...

3. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   Metal moulding systems, with a flattened oval section consisting of a base strip and a snap-on cap channel, were more costly than open wiring or wooden moulding, but could be easily run on wall surfaces. Similar surface mounted raceway wiring systems are still available today.

4. List of auto racing tracks in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_auto_racing_tracks...

   2.2 miles (3.5 km) 12 SCCA: Hallett Motor Racing Circuit: Jennings: Oklahoma: 1976 Asphalt 1.8 miles (2.9 km) 10 SCCA: Harris Hill Raceway: San Marcos: Texas: 2008 Asphalt 1.82 miles (2.93 km) 11 SCCA, ChampCar Endurance Series: High Plains Raceway: Deer Trail: Colorado: 2009 Asphalt 2.55 miles (4.10 km) 15 SCCA: Hutchinson Island: Savannah ...

5. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   FMT is a raceway, but not a conduit and is described in a separate NEC Article 360. It only comes in 1/2" & 3/4" trade sizes, whereas FMC is sized 1/2" ~ 4" trade sizes. NEC 360.2 describes it as: "A raceway that is circular in cross section, flexible, metallic and liquidtight without a nonmetallic jacket."

6. Irwindale Event Center - Wikipedia

   en.wikipedia.org/wiki/Irwindale_Event_Center

   Construction began in March 1998 on Irwindale's 6,500-seat grandstand and 1 ⁄ 2 - and 1 ⁄ 3-mile ovals. Irwindale Speedway hoped to fill the void left in the Los Angeles Basin left by the closures of the famed Riverside International Raceway, Ontario Motor Speedway and Saugus Speedway. The $7-million project was completed March 1999 and ...

7. Indianapolis Motor Speedway - Wikipedia

   en.wikipedia.org/wiki/Indianapolis_Motor_Speedway

   The track surface consisted of graded and packed soil covered by 2 inches (5 cm) of gravel, 2 inches (5 cm) of limestone covered with taroid (a solution of tar and oil), 1–2 inches (3–5 cm) of crushed stone chips that were also drenched with taroid, and a final topping of crushed stone. Workers also constructed dozens of buildings, several ...