Doug Davis - Muskingum County Engineer Zanesville, Ohio

Doug Davis - Muskingum County Engineer Zanesville, Ohio

Doug Davis - Muskingum County Engineer
Zanesville, Ohio
Muskingum County Statistics
 Population
 Parcels
 Total Staff
o Highway
o Office
86,074
64,129
45
35
10




Road Miles
Bridges
Townships
Square Miles
530
412
25
670
2
1. Green Valley Road
2. Boggs Road
3. New Hope Road
4. Clay Pike Road
5. Shady Lane
6. Blue Rock Road
7. Richey Road
8. Houts Road
Green Valley Road - Recycled beams, faced abutments, older style GR
Boggs Road – Total Replacement
New Hope Road –Box Culvert
Clay Pike Road - New Beams/Credit Bridge
Clay Pike Road – Box Culvert
Richey Road – New Beams, Concrete Deck
Houts– New Beams, Timber Deck
Conspan
Old River Road – Conspan
Planning
Needed Skills
Personality (Can do attitude)
Training
-Welding
-Inspection
Materials
- DOT Specifications
- Concrete Mix Design
- IPANEX water proofer
- Epoxy Reinforcing
- Galvanizing
- Recycling
Methods
-Concrete Curing
-False Work
-Walk Bridge
-Channel Protection
-Recycling
Boggs Road Case Study
Single Span Steel Beam
Bridge, 33 - Foot Long;
22.7 - Feet Wide, With 6-inch
Reinforced Concrete Deck
General Appraisal = 4P
Sufficiency Rating = 29.8
Load Ratings 7, 8, 8, 14 Tons
East Abutment Showing Widening
of Structure On Wing Wall
Beam Deterioration Resulting From Cold
Joint In Widened Deck
Fascia Beam Deterioration
Settlement Behind East Abutment
Settlement Behind West Abutment
Beam Deterioration at Deck Cold Joint
In House Design Utilizing:
-Micro Station GEOPAK V8i
-Merlin Dash
-USGS StreamStats
Design Criteria:
-55 MPH Design Speed
-55 MPH Legal Speed
-ADT = 285 (2014), Local Rural Road
-HL93 Loading
-Full Height Abutment Supported On Spread Footings
-Soil Borings Indicated Rock (7,000 psf) 15-Feet Below the Deck Surface
-Epoxy Coated Rebar – Fabricated for the Project
44 - Foot Span Composite Design:
5 - W24 x 76 GR 50, Galvanized Steel Beams on 5-Foot spacing w/ 2-FT Overhang
3 - ¾ IN-Diameter Shear Studs
Additional ¼-IN of Camber on Exterior Beams To Support Thickened Edge
3 - ¾-Inch x 5-inch Long Shear Studs
Installed Through 18 Ga. 1.5c-decking
2- Mats Of No.5 Rebar On 12-inch Centers
~42 CY of ODOT CL “S” (4,500 PSI) With IPANEX
Water proofer, Wet Cured For Minimum Of 7 Days
Twin Steel Tubing With Nested Rail Transition Section And Turned
Down (Type “A”) Anchor Assembly
Before:
33-foot Span
22’-7” Wide
After:
44-foot Span
24’-0” Wide
Before:
33-foot Span
22’-7” Wide
BEFORE
After:
44-foot Span
24’-0” Wide
AFTER
Material Costs:
1. Bolt Together Steel Structure
2. Decking (1.5C – 18 ga. Decking
3. Shear Studs
4. Bridge Railing and Guard Rail
5. Reinforcing Steel
6. Concrete /Forms (180.5 CYs)
7. Asphalt Repair
Labor and Equipment Costs:
1. Labor
2. Equipment
$26,016
$2,223
$1,680
$14,590
$7,490
$27,026
$11,500
Subtotal $90,524
$19,562
$21,679
Grand Total = $131,765
Material Costs Steel:
1. Bolt Together Steel Structure
2. Decking (1.5C – 18 ga. Decking
3. Shear Studs
4. Bridge Railing and Guard Rail
5. Reinforcing Steel
6. Concrete /Forms (180.5 CYs)
7. Asphalt Repair
Subtotal
$26,016
$2,223
$1,680
$14,590
$7,490
$27,026
$11,500
$90,524
Labor and Equipment Costs:
1. Labor (21 days)
$19,562
2. Equipment
$21,679
Grand Total = $131,765
Material Costs Concrete:
1. Concrete Box Beams (6 - 21x48) $37,290
2. Bridge Railing and Guard Rail $14,590
3. Reinforcing Steel
$5,000
4. Concrete/Forms (160 CYs)
$24,000
5. Asphalt Repair
$11,500
6. Crane Rental
$5,000
Subtotal
$97,380
Labor and Equipment Costs:
1. Labor (18 days)
$14,757
2. Equipment
$21,679
Grand Total = $133,816
Difference Between Steel Beams and Concrete Box Beams ~ $2,051
Douglas R. Davis, P.E., P.S.
DAVIS.MCEO@RROHIO.COM
740-455-0155
Muskingum County Engineer
Zanesville, Ohio