Jake Neal and Jay K.  OFFICIAL NAME: Smithfield Street Bridge OTHER DESIGNATION: LOCATION: Pittsburgh USGS 7.5" Topo Quad - UTM Coordinates: Pittsburgh.

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Presentation transcript:

Jake Neal and Jay K

 OFFICIAL NAME: Smithfield Street Bridge OTHER DESIGNATION: LOCATION: Pittsburgh USGS 7.5" Topo Quad - UTM Coordinates: Pittsburgh  West - Zone 17;  LENGTH OF MAIN SPAN: 2 main spans, 360 ft each (344 ft clear) TOTAL LENGTH (including longest elevated ramp): 1,184 ft  HEIGHT OF DECK: 42.5 ft Emsworth Dam normal pool level 710 ft  YEAR ERECTED / ENGINEER: ; Gustav Lindenthal, engineer upstream side added 1889; widened to  match downstream span 1911

 Table of Quantities (Suspension Bridge)  Length of bridge between abutments feet  Number of spans... 8  Average width of spans from centre to centre feet  Diameter of cables /2 inches  Number of wires in each  Weight of superstructure of one span, as far as supported by cables tons  Tension of cables resulting from it tons  Weight of four six horse teams, loaded with 104 bushels of coal each tons  Tension resulting from it when at rest tons  Weight of 100 head of cattle at 800 lbs tons  Tension resulting from it when at rest tons  Aggregate weight of one span as far as supported by the cables, plus 100 cattle at rest tons  Tension resulting from it tons  Ultimate strength of two cables tons  Section of anchor chains inches  Section of pendulums inches

 BETWEEN: -- Fort Pitt Blvd on right descending bank of Monongahela River -- Carson St on left descending bank of Monongahela River CROSSES: Monongahela River

Cost: 16.3 million  Carries 4 lanes of roadway 2 pedestrian walkways

 In 1845 half of Pittsburgh burns  to the ground  including the  Smithfield Street Bridge.

Thursday, January 24th, 2008 Thursday, January 24th, 2008 Great amusement and humor today. And like most humor: it came at somebody else's expense. One of my colleagues reported that there was an icy spot on the Smithfield Street Bridge and that people were falling who crossed it. Our office overlooks the bridge and a few of us took a gander. Sure enough: within moments we saw a beautifully executed pratfall. As if we were watching a circus performance, we ohhed and ahhed as about one out of every ten people who crossed the spot fell. (I'm guessing we saw an average of one fall every three minutes during the morning rush hour.)

 TRUSS LENGTH: 34 Inches, 246 scale ft. (32 % reduction) TRUSS HEIGHT: 6.5 Inches, 47 scale ft. (7% reduction) WIDTHS: 2 girder spans, 9.5 Inches (0% reduction) 2 truss spans, 9.96 inches (0% reduction) 1 pony truss, 9.5 inches (0% reduction) PARTS COUNT: Estimated 8, ,000 WOOD TIES: 1,100 (rail side) MAN HOURS: Estimated 2,000 minimum RAW MATERIALS USED: C-V bridge girders, Plastruct Structural Shapes and Cement, Evergreen strips and sheet stock, 36 ft. code 100 rail. PAINT: Aluminum and gray primer, Brass suspenders (120), plastic lower truss eye bars (456), H&R plastic masonry pier covers

A holiday card featuring Pittsburgh's historic Smithfield Street Bridge. The inside greeting is "Wishing you peace and joy this holiday season