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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. SuperintendentKyle 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 Highways60 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 ofCounty highways.
Washington County Department of Public Works 4
Washington County DPWDivision of Solid WasteDivision of Solid Waste
20 men staffing 5 transfer stations.
Washington County Department of Public Works 5
Washington County DPW
Engineering DivisionEngineering DivisionStaff of 3 provide surveying and engineering services.
Washington County Department of Public Works 6
Washington County DPW
Bridge Repair CrewBridge Repair CrewBridge Welder, Carpenter, Flagger.
Washington County Department of Public Works 7
Washington County DPW
Bridge CrewBridge CrewForeman, 2 Carpenters & 1 Laborer.
Washington County Department of Public Works 8
Washington County DPW
Emergency BackEmergency Back--up Bridge Crewup Bridge CrewForeman, 2 Carpenters & 1 Laborer.
Washington County Department of Public Works 9
Washington County DPWBridge 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.
CONSLimited by weight.Construction joints.
Washington County Department of Public Works 11
DesignMaximum panel weight: 12.5 tons.H20 loading.Designed from a maintenance standpoint.Developed spreadsheet model.
Washington County Department of Public Works 12
DesignREINFORCED 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 & ShippingJohn 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
Washington County Department of Public Works 70
Ex photo 5
Washington County Department of Public Works 74
Abutment Repairs photo 1
Washington County Department of Public Works 78
Abutment Repairs photo 5
Washington County Department of Public Works 80
Abutment Repairs photo 7
Washington County Department of Public Works 81
Abutment Repairs photo 8
Washington County Department of Public Works 82
Superstructure photo 1
Washington County Department of Public Works 86
Superstructure photo 5
Washington County Department of Public Works 89
After
Washington County Department of Public Works 91
After
Washington County DPW 92
Design, Fabrication, and Erection of Precast Concrete Deck Panels
Questions?
Washington County Department of Public Works
27 October 2004