Soil bearing pressures in the Phoenix metro are typically 1500 psf at 1'-6" below grade for natural undisturbed soil (500 psf per 6" depth) Pockets of bad material can be found all around. You should also be aware that you will need to classify the soil per IBC 2003 as some soil in the valley is...
I'm looking for some insight and/or a confirmation on the seismic zone requirements in Tianjin, China. What I've been told and been able to unearth to date is that the area uses a seismic code that ranges from 1 to 10 (I can only assume it is based on a log scale - which probably means it isn't...
Prrog,
4x8 cylinders are starting to be accepted in different areas of the US. It is becoming generally accepted to use this size for concrete that does not have aggregate sizes above 1" sieve (double check that value). I believe there is currently some work being performed and written with...
I'm out of my level of expertise here - but we currently use Sema4. From what I hear, my accounting department loves it. We started using the program when we were less than 20 people. It now supports three offices with over 50 people.
MikeT14:
A few bigger picture notes on PT design - Is it neccessary to drop the beams in question? The economy of PT design is keeping the slab thickness the same. The additional formwork for drop beams in the direction parallel to the slabs may be costly. Also, The spans between 22' and 32'...
