Standard:1 How to determine buildings density? 2 Street gird. 3 Whats the relation between buildings density and urban open space and urban ventilation. 3 Form of architecture.
1. To determine the building density, you must check local regulation. it's depend on the population, sometimes depend on the environmental load.
2. Street grid, each location has its own microclimate with different condition, the best way is trying the optimum model with different scenario (condition)
3. the more building the more temperature trapped, the less air circulation, which means rising heat intensity in the area
here my research in hot-humid, you may change the situation in dry and hot :) https://www.researchgate.net/publication/256459082_Building_Groups_Design_Strategies_in_Hot-humid_Climate_A_Dense_Residential_Planning_in_Bandung_Indonesia?ev=prf_pub.
Good luck!
Conference Paper Building Groups Design Strategies in Hot-humid Climate: A De...