For a tower structural design, how to determine design loads for a technical floor ?

All design loads of any structure will depend on its use. If it is a residential or commercial building, you need to determine its loads: dead load, live load, roof live load, wind load, and seismic load. If you are dealing with tower structures (radio / communication towers), you also need to determine the dead load, live load, wind / seosmic loads.But, you need to coordinate with the concerned person on the properties of the antennas and its location. Further more, its very important to define all the load combinations to be used to check the stability, seviceability, and strength of the structure. Load combinations will depend on the building code you are using. I hope this answered your question. Regards,

first of all you have to define the technical floor, is it IT room, electrical mechanical room, HVAC, equipment room with raised floor, etc? , this could be coordinated with other related disciplines. Accordingly, you could ask for the expected loads from the specialist as defined. Meanwhile, you could refer to the standards design loads table as per the floor type and its usage form Standards & codes, and consider the most critical loads which are bigger value. I hope this answer find your need.

You have to ask electromechanical department about the expected weight or provide you with data sheets for the cheillers