Chapter 3: Abutments
Anchor: #CIHGHCHHSection 1: General Information
Anchor: #i1003033Preferred Abutment Scale
The Abutment Details Sheet shall normally contain, but is not limited to, the following listed details (showing preferred scales):
|
Details |
Preferred Scale |
|---|---|
|
Plan View |
3/8" = 1'-0" |
|
Elevation View |
3/8" = 1'-0" |
|
Cap and Backwall Section |
1/2" = 1'-0", 3/8" = 1'-0" |
|
Wingwall Elevation and Section |
1/2" = 1'-0", 3/8" = 1'-0" |
|
Corner Details (Cap and Backwall) |
1/2" = 1'-0" |
|
Bar Details |
3/4" = 1'-0", 1/2" = 1'-0" |
|
Bearing Seat Detail |
3/4" = 1'-0" |
|
Table of Estimated Quantities |
|
|
General Notes |
|
Dimensions shall normally be shown on the abutment sheet as listed below:
- Structural dimensions and foundation locations - In the plan view, dimensions transverse to the roadway, wing lengths, and drilled shaft or piling locations in decimal feet to the nearest 0.001'. All other details, including dimensions across cap width in plan view, shall be shown in feet and inches to the nearest 1/4". (See Foundation Parameters and Calculations in Section 4 for shaft or pile group locations).
- Reinforcing steel - Rebar dimensions and locations in all views, including bar details, shall normally be in feet and inches to the nearest 1/4" at the centerline of the rebar.
- Cover - Cover on rebars shall normally be 2 1/4" to the centerline of the rebar. Cover on portions of reinforced concrete that are cast against exposed earth (as in the bottom of caps and wingwalls) shall normally be 3 1/4" centerline covers. The usual 2 1/4" centerline cover may require modification if rebars larger than #5 are used. (See Chapter 1, Section 6, for cover requirements for reinforcing steel).
- Angles - in degrees, minutes, seconds to the nearest whole second, if such accuracy is available
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NOTE: For information about concrete slab and girder, box beam or double - T abutments, use Bridge Division standards as examples.