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Use Zone Multipliers for a 10 story building with identical floors/units.

Once you've used zone multipliers, you can add 30 air loops instead of 100. Further consolidating zones that share a common facade / geometry will reduce that number further.

Then, you can add HVAC systems individually in the OpenStudio app, or write a measure with the OpenStudio API to add split DX systems to each zone. There is a 'model_add_split_ac(model, thermal_zones)' method in openstudio-standards to add split DX systems. You could use this method or copy parts of it to make your own custom method.