I have limited experience with water towers. However, the universal standard for water as I understand it and have used is 62.4 pcf for fresh water and 64 pcf for seawater. 62.4 is actually the maximum density of water (at 4 deg. C) and can vary to ~ 60 pcf at 100 deg. C. Density of seawater...
I am working on a high end 3 story apartment building. Footprint is long and skinny (70'x300'). So in the longitudinal direction seismic may control. This is wood bearing walls, with wood shear walls. On one side I have plenty of shearwall and also 3 masonry stair and elevator cores. On the...