ACI 318 has requirements for concrete mix designs based on Sulfate Class (S0, S1, S2, or S3). Question: How do you typically determine the sulfate concentration in the soil for your projects? I have never seen this information in the project soils reports that I receive. Maybe there are...
Anyone have any experience using precast prestressed double tees for a sloped roof (say 3:12 slope)? If the DT span is parallel to the ridge, then there will be a weak-axis load component (may need to be resisted by the diaphragm). If the DT span is perpendicular to the ridge, then the...
