Strategies for space planning may include:Stack common-use areas so that all janitors’ closets are located in the same place on each floor, then run a single exhaust duct vertically through the building for each exhaust fan to tie into.    Add h

Strategies for space planning may include:

Stack common-use areas so that all janitors’ closets are located in the same place on each floor, then run a single exhaust duct vertically through the building for each exhaust fan to tie into.    
Add height to the deck-to-deck elevation to provide extra space above finished ceilings for ductwork.
Locate rooms identified as containing hazardous material adjacent to outside walls to reduce the need for more ductwork.

Design in space for additional ductwork that might be needed to provide designated exhaust for all garages, high-volume copy rooms, janitors’ closets, science labs, workshops, art rooms, or any other spaces that may be used for mixing and storage of chemi

Design in space for additional ductwork that might be needed to provide designated exhaust for all garages, high-volume copy rooms, janitors’ closets, science labs, workshops, art rooms, or any other spaces that may be used for mixing and storage of chemicals or hazardous materials. You need to design the exhaust system so that each space with hazardous material has negative pressure in respect to adjacent spaces. For each of these spaces, be sure to include self-closing doors, and deck-to-deck partitions or hard-lid ceilings.