session 3.4 design, fabrication and erection ... washington county dpw 1 design, fabrication, and...

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  • Willy F. Grimmke, P.E. Kyle M. Vandewater County Superintendent of Public Works Public Works Manager Washington County DPW Washington County DPW 383 Broadway 383 Broadway Fort Edward, NY 12828 Fort Edward, NY 12828 (518) 746-2440 (518) 746-2440 [email protected] [email protected]

    Synopsis:

    Washington County DPW began fabricating and installing precast bridge panels with three goals in mind: 1. Reduce the length of bridge closures. 2. Stretch the construction season. 3. Conduct short-span superstructure replacements within the limitations of our maintenance budget. To date the county has completed three separate spans configured as a simple span slab bridge, and transverse panels set on existing beams. This presentation will cover the design and construction of these three spans.

    About the Presenters:

    Willy Grimmke is the Superintendent of Public Works for Washington County. He has been with Washington County since 1997. He provides general supervision of the Department and manages the County's Federal Aid projects. Prior to joining the County, Mr. Grimmke managed transportation design and construction projects with a local engineering firm. He has also worked for the Connecticut Department of Transportation. Kyle Vandewater is the Public Works Manager for Washington County. He has been with Washington County since 2001. He provides general supervision for the Solid Waste Division and manages construction performed by county forces in the Highway Division. Mr. Vandewater also has worked as a project manager for Stonebridge Iron and Steel, and the Chazen Companies.

    SESSION 3.4

    Design, Fabrication and Erection Of Precast Concrete Deck Panels

  • Washington County DPW 1

    Design, Fabrication, and Erection of Precast Concrete Deck Panels

    Willy F. Grimmke, P.E. Superintendent Kyle M. Vandewater, Deputy Superintendent

    Washington County Department of Public Works

    27 October 2004

  • Washington County Department of Public Works 2

    Washington County DPW

    Division of HighwaysDivision of Highways 60 men staffing 8 maintenance substations. 116 County bridges, spans > 20’-0” 120 County bridges, spans < 20’-0”

  • Washington County Department of Public Works 3

    Washington County DPW

    285 miles of County highways.

  • Washington County Department of Public Works 4

    Washington County DPW Division of Solid WasteDivision of Solid Waste

    20 men staffing 5 transfer stations.

  • Washington County Department of Public Works 5

    Washington County DPW

    Engineering DivisionEngineering Division Staff of 3 provide surveying and engineering services.

  • Washington County Department of Public Works 6

    Washington County DPW

    Bridge Repair CrewBridge Repair Crew Bridge Welder, Carpenter, Flagger.

  • Washington County Department of Public Works 7

    Washington County DPW

    Bridge CrewBridge Crew Foreman, 2 Carpenters & 1 Laborer.

  • Washington County Department of Public Works 8

    Washington County DPW

    Emergency BackEmergency Back--up Bridge Crewup Bridge Crew Foreman, 2 Carpenters & 1 Laborer.

  • Washington County Department of Public Works 9

    Washington County DPW Bridge Program

  • Washington County Department of Public Works 10

    Why Precast? PROS

    Reduce the length of bridge closures. Stretch the construction season. Address short span construction within our maintenance budget.

    CONS Limited by weight. Construction joints.

  • Washington County Department of Public Works 11

    Design Maximum panel weight: 12.5 tons. H20 loading. Designed from a maintenance standpoint. Developed spreadsheet model.

  • Washington County Department of Public Works 12

    Design REINFORCED CONCRETE SLAB BRIDGE

    Exterior panelC206Bridge No.: CR12Road Carried: Town of WhitehallPolitical Unit:

    pcf145.00g c = Unit wt. concrete:ft11.75Sc = Clear Span: ( = S c + t )ft12.83S = Effective span:ft1.08t = Slab Thickness:

    ft30.00Wc = Clear width: ( for analysis )ft1.00b = Unit width:psf30.00WS = Wearing Surface:

    plf70.00Rail = Railing: psf30.00FOL = Future Overlay:

    plf190.99DL = b x t x g c + b (FOL) + b (Rail/W c) x 2 DL = Dead Load:

    kip ft3.93MDL = (DL x S 2)/8MDL = Dead Load Moment:

    25.00HS = Live Load (HS25):

    AASHTO 3.8.2Impact allowance is a fraction of live load stress, and shall not exceed 30% (1.3)Impact:

    1 + (50 ft)/(Sc + 125 ft)I = 1.3

    (Spans upto and including 50 ft .)900 x SMLL = Live Load Moment:

    (Spans 50 ft . to 100 ft .)1000 x (1.3 x S - 20)

    kip ft14.43MLL = kip ft18.76MLL(I) = with factored impact:

  • Washington County Department of Public Works 17

    Casting Photo 3

  • Washington County Department of Public Works 18

    Panel Loading & Shipping John Deere 644 loader. Gradall.

  • Washington County Department of Public Works 23

    Loading Photo 5

  • Washington County Department of Public Works 24

    Loading Photo 6

  • Washington County Department of Public Works 28

    Bridge C89; County Route 74 over Marshall Brook, Village of Greenwich

    Existing bridge constructed 1939. Concrete parapet rail system. Erosion/scour issues. Concrete deck in failure. That pesky water main.

  • Washington County Department of Public Works 30

    Ex photo 2

  • Washington County Department of Public Works 1

    Ex photo 3

  • Washington County Department of Public Works 4

    Ex photo 6

  • Washington County Department of Public Works 6

    Scour repair photo 2

  • Washington County Department of Public Works 9

    Demolition photo 1

  • Washington County Department of Public Works 11

    Demolition photo 3

  • Washington County Department of Public Works 14

    Headwall photo 1

  • Washington County Department of Public Works 15

    Headwall photo 2

  • Washington County Department of Public Works 17

    Headwall photo 4

  • Washington County Department of Public Works 21

    Superstructure photo 4

  • Washington County Department of Public Works 23

    Superstructure photo 6

  • Washington County Department of Public Works 24

    Superstructure photo 7

  • Washington County Department of Public Works 27

    Superstructure photo 10

  • Washington County Department of Public Works 29

    After

  • Washington County Department of Public Works 31

    Bridge C37; County Route 16 over Mount Hope Brook, Town of Fort Ann

    Original bridge constructed 1930’s. Existing bridge re-constructed 1994. A588 beams with CCA PT wood deck. Premature corrosion of beams.

  • Washington County Department of Public Works 32

    Ex Conditions photo 1

  • Washington County Department of Public Works 34

    Ex Conditions photo 3

  • Washington County Department of Public Works 35

    Detour Bridge photo 1

  • Washington County Department of Public Works 38

    Detour Bridge photo 4

  • Washington County Department of Public Works 41

    Detour Bridge photo 7

  • Washington County Department of Public Works 42

    Beam Prep photo 1

  • Washington County Department of Public Works 45

    Beam Prep photo 4

  • Washington County Department of Public Works 47

    Beam Prep photo 6

  • Washington County Department of Public Works 51

    Superstructure photo 2

  • Washington County Department of Public Works 53

    Superstructure photo 4

  • Washington County Department of Public Works 54

    Superstructure photo 5

  • Washington County Department of Public Works 58

    Superstructure photo 9

  • Washington County Department of Public Works 59

    Superstructure photo 10

  • Washington County Department of Public Works 60

    Superstructure photo 11

  • Washington County Department of Public Works 62

    Superstructure photo 13

  • Washington County Department of Public Works 63

    Finished Bridge Pictures

  • Washington County Department of Public Works 64

    Finished Bridge Pictures

  • Washington County Department of Public Works 65

    Bridge C206; County Route 12 over unnamed stream, Town of Whitehall

    Existing bridge re-constructed and widened under the Erwin Plan, 1952. Severe deterioration of abutments and fascia girders.

  • Washington County Department of Public Works 66

    Exist Conditions photo 1

  • Washington County Department of Public Works 69

    Ex photo 4

  • Washin