ThorenO2
Structural
- May 24, 2019
- 51
Hello,
Comparing results of 318 software analysis with prescriptive design from ACI 332 Residential and the IRC. A couple items have come into question: 1) 318 requires 2 curtains of verticals, 332 requires only 1 on the tension side - I take it this is related to 322 pinning the basement wall with dowels instead of hooks toward the toe. 2) 318 requires strict horizontal reinf. VS. 332 w/ only 3 or 4 bars, which seems customary. 3) IRC R403.1(2) footing sizes seem extremely tight, as an example, they list a 16x6 footing for a 3-story brick home with a basement! 332 calls for a 20" wide footing. 4) 318 calls for transverse footing bars, which has already been discussed here at length and I agreed no transverse bars for residential. The residential concrete folks must have decades of empirical data including using every positive in the book when they produce these tables. Appreciate any takes on this. Thank you,
Comparing results of 318 software analysis with prescriptive design from ACI 332 Residential and the IRC. A couple items have come into question: 1) 318 requires 2 curtains of verticals, 332 requires only 1 on the tension side - I take it this is related to 322 pinning the basement wall with dowels instead of hooks toward the toe. 2) 318 requires strict horizontal reinf. VS. 332 w/ only 3 or 4 bars, which seems customary. 3) IRC R403.1(2) footing sizes seem extremely tight, as an example, they list a 16x6 footing for a 3-story brick home with a basement! 332 calls for a 20" wide footing. 4) 318 calls for transverse footing bars, which has already been discussed here at length and I agreed no transverse bars for residential. The residential concrete folks must have decades of empirical data including using every positive in the book when they produce these tables. Appreciate any takes on this. Thank you,
