Mike - That's not entirely true. Smartdraw 2014 Full Version Crack Winzip on this page. You merely have to demonstrate the seismic forces are less than 50% of the wind forces.
And, that's usually the case. Even in high seismic zones. It just usually takes some extra effort to demonstrate that. I built an example (back when TnxTower was still RISATower) of an SST in the highest seismic zone in the US (Sds - 1.69 and Sd1 = 1.17) located in a reasonable wind zone (80mph) and I found the following: Method 1 (equivalent static) force = 85% of wind shear Method 2 (equivalent modal) force = 65% of wind shear Method 3 (modal response spectra analysis) = 43% of wind shear This was put together originally as TnxTower / RISATower training materials.
All told, it took me 14 pages of increasing complexity to eventually demonstrate that none of my work was really required. RE: best tower analysis software (Structural) 9 Apr 15 01:52. I don't analyze them very often but PLS-CADD has their Tower Module which can be bought as a stand alone program and it has the ability to analyze (and probably design too) free standing lattice towers and guyed lattice towers and masts. They have a load module that will generate EIA loads if you specify the wind speed. Their main focus is my T-Line world but they can handle telecom type towers also. Cod4 Promod Bots.