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Okay, Thank u very much

Uzair, Where I work, it is mandatory that all geotechnical reports to be reviewed and stamped by Professional Geotechnical Engineers before they can be issued for use. Normally, geotech engineer would also visit the site, take the samples and an EIT would assist him make a report. But he is responsible for all engineering content in it. Thanks.

Assalam o alaikum. According to 21.5.1, width of beams must satisfy the following 1. Clear span ln ≥ 4 effective depth General 2•Width to depth ratio bw/h ≥ 0.3 3.Width bw ≥ 10 in. It means, i can provide 10 inch thickness in zone 4, if it is satisfying above 3 clauses. Is there further limit?

Waqas, I will just add that for beam/ coulmns sizing its always a good idea to do a quick model and check all B/C Ratios in the beginning of the project. Also, construction guys are more used to beam size multiples of 3-probably because of formwork. So you may want to provide a beam width/ depth accordingly. Thanks.

Wa-alaikum-assalam! IMO, yes. You may refer to Table 29-3 in PCA Notes on ACI 318-08, providing an excellent summary of all the seismic requirements of ACI 318, in case of flexural members of SMFs (applicable to seismic zones 3 & 4), as well as comparison of the code requirements for other MFs. Regards.

W.Salaaam Waqas ! 1) No ! you are not missing anything.... 2) choose the 3rd option in Loads to export ...(have a look to the attached screenshot) 3) Yeah Soil support value matters in soil pressure because high modulus of sub grade value means more stiffer is the soil and hence more will be the soil pressure. 4) Your value is OKKY but I usually take the safty factor 2.5 (average of 2 & 3) because safty factor is 2 for granular soil & 3 for cohessive soil. (0.75x2.204x1000x2.5x12=49590 pcf) 5) i would model it as a single footing slab, so it will act as combined footing....

Spring stiffness is provided in geotechnical report. If you don't have that, you can see other relations; such as in Bowel's book. Here, in middle east, we take modulus of subgrade reaction = SBC x 100 for isolated foundations and SBC x 120 for rafts. SBC is in units of kN/m². SBC=Soil Bearing Capacity