HVAC Duct sizing

use these equations to find the cooling and heating load, and find a commercial ac that can supply that and slap it on the building. So basically, given the building layout, the end goal is to have the building with good ac and a good system. So we just gotta design it to our best abilities. we are supposed to create a duct and airflow system in the space he provided to us, then calculate all the head load numbers for each space and so on. Using the CLTD method equations-Summary will help a lot.