I am setting a modular building at our local school and was wondering about how close I could get? The main building is block walls with exterior brick and 4 windows facing the modular building. The modular is wood construction with metal exterior with 4 windows facing the main building. I will have a 6x6 deck from front door with a 4 foot wide ramp 30ft long running parallel in between the main building and the modular. Any help will be greatly appreciated.