Max Permissible Reinforcement Spacing |
  
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Max Permissible Reinforcement Spacing |
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What is the maximum permissible reinforcement spacing for cantilever retaining wall footings (heel, toe, and key)?
According to ACI 318 Section 13.3.2.1, "the design and detailing of one-way shallow foundations [...] shall be in accordance with this section and the applicable provisions of Chapter 7 and Chapter 9." Per Section 7.7.2.3, the "maximum spacing s of deformed longitudinal reinforcement shall be the lesser of 3h and 18 in."
In ENERCALC SEL, the maximum permissible reinforcement spacing for cantilever retaining wall footings (heel, toe, and key) is taken as the lesser of 3h or 18 inches, where "h" refers to the thickness of the respective footing component.
What is the maximum permissible reinforcement spacing for cantilever retaining wall stems?
According to ACI 318 Section 13.3.6.1, "the stem of a cantilever retaining wall shall be designed as a one-way slab in accordance with the applicable provisions of Chapter 7." Per Section 7.7.2.3, the "maximum spacing s of deformed longitudinal reinforcement shall be the lesser of 3h and 18 in."
In ENERCALC SEL, the maximum permissible reinforcement spacing for cantilever retaining wall stems is the lesser of 3h or 18 inches, where "h" is the thickness of the stem.
For more details on ENERCALC's interpretation of the "applicable provisions" phrasing in the ACI 318, refer to the Shallow Foundation "Applicable Provisions" section in the help documentation.
