Both masts and towers are quite resistant for vertical loads. Clients often ask us if a certain type of mast will carry some given weight of antennas in kilograms. The answer is nearly every time the same: yes sir. This is because for mast side loads are much more dangerous and influence the construction more. Side loads occur mainly because of the wind pressure on the antenna faces, and are directly proportional to their total surface. This is what counts.
For well designed mast the maximum Y axis deviation from wind pressure is 1:100 of its height at max wind speed in given wind zone. As you see for us the key information about your project is: location where the mast is going to be installed, and total surface of antennas you want to put on your newly bought truss.