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:
  • Bus stops
  • Bus stop shelters
  • Transportation safety
  • Wind resistant design
  • Design
  • Design methods
  • Building, Stormproof
  • Building, Wooden--Safety measures
  • Bus stops--Design and construction
  • Bus stops--Safety measures
• 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.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18150/dot_18150_DS1.pdf
• File Type:
  [PDF - 5.60 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:749c28f5ee914e1dcfe3cd6f3c748dad18c8ff6bc624ee248782c9ab4f3058f6