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Bridge

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by

Max wei

on 17 October 2012

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Transcript of Bridge

Bridge Assessment Amsterdam Bridge by Max Wei, Grace Cochrane, & Boston Walker Compliance With Codes & Standards 1 2 3 Overview OSIM CTADG Ontario Structural Inspections Manual (OSIM) Material defects
guidelines Material condition
state tables Wood
material
defects Checks and splits History DfX & Key Design Features Checks extend
more than 20%
in to
members
(very severe) Opened June 25, 1978 by Wim Polak, the bridge celebrates the twinning of Toronto and Amsterdam in 1974 Torontobrug, in Amsterdam Abrasion and wear Type Deck surfaces
suffered
minor abrasion
(light) cable-stayed footbridge
includes moving bascule section Purpose Connection deficiencies Substantial corrosion
of bolt connections
(severe) Steel
material
defects spans the Simcoe St. slip from York Quay to Rees Street
allows boat traffic underneath York Quay Rees Street Corrosion Design for Aesthetics Section loss >5%
(medium severity) Widespread surface
wear (medium severity) Deformations >10% diameter bending in
cantilever cross-members
(Very severe) Uses Significant bolt-tilting
at cantilever deck joint
(Medium severity) Connection deficiencies Advertising Tourism Design for Safety? "workhorse bridge" NOT Walkway * * http://www.pbs.org/wgbh/nova/lostempires/china/gamesans.html Significant disfiguration
due to corrosion at some
joints
(Severe) City of Toronto Accesibility Design Guidelines (CTADG) Section 1.1.1:
Pedestrian bridge
design guidelines Material
condition
state
tables Railing corrosion Surface corrosion
(Light severity) Foundations Foundations
isolated from
water Walkway slopes Longitudinal slope Measured at 15°
(CTADG recommends <= 5°) Cross-slope Measured at 1°
(CTADG recommends <= 2°) Walkway width Two-way width Measured at 1910mm
(CTADG recommends 1525mm) One-way width Measured at 1690mm
(CTADG recommended 1220mm) Other provisions Ramp access No ramp access Handrails Easy to grasp,
>=50mm wide,
suitable height Goldberg, Geoffrey . Bridge Aesthetics Sourcebook . Draft ed. New York: Transportation Research Board, 2009. Print. Ministry of Transportation
Ontario Structure Inspection Manual 2nd rev. Toronto: The Queen's Printer for Ontario, 2000. Print. City of Toronto
City of Toronto Accessibility Design Guidelines. Toronto: The Queen's Printer for Ontario, 2004. Electronic .
Full transcript