Bus-stop shelters : improved safety (phases 1 and 2).

Details

• Creators:
  Turnbull-Grimes, Chris ; Charlie, Wayne A. ; Gutkowski, Richard M. ; Balogh, Jeno
• Subject/TRT Terms:
  Building, Stormproof Building, Wooden--Safety Measures Bus Stops Bus Stops--Design And Construction Bus Stops--Safety Measures Bus Stop Shelters Design Design Methods Transportation Safety Wind Resistant Design
• Resource Type:
  Tech Report
• Geographical Coverage:
  Colorado
• Corporate Publisher:
  Mountain-Plains Consortium
• Abstract:
  This research was undertaken to 1) design and construct a wall and basic subassembly of an emergency
  
  storm shelter comprised entirely of wood that could resist a “missile” (15 lb [6.8 kg], 12-ft [3.66 m] long
  
  2x4 from FEMA 361 specifications) impact at 100 mph (161 km/h) (KEImpact = 3657 ft-lbs [4959 J]) or
  
  multiple impacts (not required by FEMA 361) at 80 mph (129 km/h) (KEImpact = 2340 ft-lbs [3173 J]); 2)
  
  study the difference in impact response for various specimen configurations, angles of impact, and
  
  support conditions; and 3) compare results for impact tests to static tests. Fifty-six impact tests were
  
  completed with the missile impacting the specimens at velocities between 63 mph and 116 mph (101
  
  km/h and 187 km/h). High speed video was taken of many of these tests in which velocity at impact,
  
  deflection, and time of impact could be determined. Previous research suggested that the ultimate
  
  strength at a 0.001-second load duration could be as much as 165% of that at a 10-minute load duration.
  
  Although strength was not able to be measured in the impact tests, the kinetic impact energy absorbed by
  
  the specimen was able to be calculated. Additionally, three specimens were statically loaded for
  
  comparison with these tests. Specimen modifications to increase flexibility significantly increased the
  
  ability of the specimen tested to resist impact loading. This was done by constructing a thin, layered
  
  specimen to act like netting and adding a polystyrene backing between the specimen and the support
  
  system. Additionally, the specimens and their support systems under impact loading were able to
  
  withstand a kinetic impact energy 373% to 698% of energy stored at the elastic limit of the statically
  
  loaded systems and 250% to 570% of the energy stored in the statically loaded specimen at failure.
  
  
• Format:
  PDF
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha256:749c28f5ee914e1dcfe3cd6f3c748dad18c8ff6bc624ee248782c9ab4f3058f6
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18150/dot_18150_DS1.pdf
• File Type:
  [PDF - 5.60 MB ]