Bar Schedule
- Becca Alford (Unlicensed)
The following is a list of all the possible bar marks that may appear in the output.
A1Â Â | Top corner (flexural reinforcement) |
A2Â | Bottom corner (flexural reinforcement) |
A100 | Top slab, inside face transverse (flexural reinforcement) |
A200 | Bottom slab, inside face transverse (flexural reinforcement) |
A300 | Top slab, outside face transverse (flexural reinforcement for multi-cell culverts, temperature steel for single cells) |
A400 | Bottom slab, outside face transverse (flexural reinforcement for multi-cell culverts, temperature steel for single cells) |
B1 | Exterior wall, inside face vertical (flexural reinforcement) |
B2 | Exterior wall, outside face vertical (flexural reinforcement used in combination with A1 and A2 bar if a U-bar is not used) |
C1 | Top slab, bottom slab, and wall longitudinal (temperature reinforcement) |
C100 | Top slab, inside face longitudinal (distribution reinforcement) |
C200 | Bottom slab, inside face longitudinal (distribution reinforcement) |
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Reinforcement Types
STR | Straight |
L-BAR | L-shaped |
U-BAR | U-shaped |
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Bar sizes range from #3 to #11. Bar spacings range from 2 inches minimum to 12 inches maximum. The program uses the actual reinforcing bar diameter when locating design reinforcement. For mesh, the program supports mesh sizes from 2.5 to 45, in both smooth and deformed types. Mesh can be spaced at 2 inches through 12 inches.
 When the clear height of the box is greater than 6 feet, bar marks A1, A2, and B2 are arranged to have the same spacing so that Class C splices may be supplied.
 When the clear height of the box is less than 6 feet, the program will omit the B2 bar and bar marks A1 and A2 will have the same spacing and overlap with a Class C splice.
 When the culvert is multiple cell, bar marks A300 and A400 will match the above spacing.
 Some fabricators prefer to combine bar marks A1, A2 and B2 or A1 and A2 into one large U-shaped bar instead of separate bars and this is acceptable.
 When single cell boxes have clear spans less than 5 feet, the program will combine bar marks A1 and A300 into one U-shaped bar for the top mat of the top slab and bar marks A2 and A400 into one U-shaped bar for the bottom mat of the bottom slab. This U-shaped bar will be given bar mark A1 for the top slab and A2 for the bottom slab and will be displayed as a U-BAR in the bar schedule.
 It should be noted that when fill heights are less than 2 feet, epoxy-coated reinforcement is required in the top mat of the top slab in most states. This affects bar marks A1, A300 and C1. When epoxy-coated bars are used, their bar marks will be displayed as AE1, AE300 and CE1 in the bar schedule.
 For mesh, the design algorithm adds two additional bar types, C2 and C3. These wires are not necessitated by the analysis, rather they represent the assumed cross wires for the A1 and A2 wires, respectively. They are not editable in Analysis Mode, and can safely be ignored.
 For ASTM charts, use the following conversions for AS1 – AS8.
ASTM | Eriksson Culvert |
AS1 AS2 AS3 AS4 AS5 AS6 AS7 AS8 | A1/A2/B2 A100 A200 B1 C100 C1 A300 A400 |
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Splice Length Chart
The program will compute and print splice lengths for bar marks B1, B3, C1, C100 and C200 as per AASHTO Specifications. Bar splices for bar marks A100, A200, A300 and A400 will be printed only if the required bar length exceeds 60 feet.