Design parameters for longitudinal bars (concrete column: ACI 318)
Note: For some of the longitudinal
reinforcement design parameters, additional user defined limits can be applied -
where this is the case minimum and maximum values can be specified from the
Design tab on the ribbon by clicking Settings > Concrete > Wall >
Reinforcement Layout.
Minimum Longitudinal Bar Spacing
For design to ACI ;
minimum clear distance | ≥ | MAX (1.5 * longitudinal db , 1.5in., 1.33*hagg) | US units | |
minimum clear distance | ≥ | MAX (1.5 * longitudinal db , 40mm, 1.33*hagg) | metric units | |
where | ||||
db | = | bar diameter | ||
hagg | = | aggregate size | ||
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Maximum Longitudinal Bar Spacing
You are given control over this value by specifying an upper limit via the Design Settings as mentioned in the Note above.
Minimum Longitudinal Total Steel Area
For design to ACI;
1% * column area
Maximum Longitudinal Total Steel Area
For design to ACI;
8% * column area