ZONING R-1-A - remodeling project - Sprinkler/HVAC?
dixonglo...@gmail.com
I am seeking to add a second story to my home and create a basement ADU. I am writing for help o confirm the sprinkler and
HVAC requirements for the ADU. It is understood
that second story addition to the main house will not require a sprinkler
system. I am trying to avoid the sprinkler system
requirement due to costs of civil works for a dedicated sprinkler line. It is my understanding DC will not allow a NFPA
13D system with an automatic shutoff (TYCO RSV -1 see attachment) valve which
runs on a main water line.
The home has an existing in-law suite in the basement with a wet bar that I will upgrade to a full kitchen. The in-law suite has its own entrance and code compliant window well exit in the bedroom. The house has one HVAC system and one electric meter. The HVAC system is located in a vestibule and it is accessible to both units. The electric panel is in the garage.
It is my understanding that I don’t need a sprinkler system but I do need
to assure a one-hour fire rated assembly between the units (main house and ADU)
which primarily will target the ceiling assembly and insuring the proper fire
blockings in the walls. The ceiling is currently 7.5 ft high
I need to upgrade the current HVAC system as part of the project. When I upgrade the HVAC, I can create a two-thermostat zoned system. The zoned system would require modification of the duct system to include a bypass, zone dampers and a zone control board. Once the zoned system has been set up, the dampers will be controlled by the zone board and the thermostats. When one of the zones need more cooling or heat, the dampers are regulated to send what is needed to the zone that is calling for it. My second alternative is to install a ductless mini split system for the basement ADU.
alexander dixon
I am seeking to add a second story to my home and create a basement ADU. I am writing for help to confirm the sprinkler and HVAC requirements for the ADU. It is understood that the second story addition to the main house will not require a sprinkler system. I am trying to avoid the sprinkler system requirement due to costs of civil works for a dedicated sprinkler line. It is my understanding DC will not allow a NFPA 13D system with an automatic shutoff (TYCO RSV -1 see attachment) valve which runs on a main water line.
The home has an existing in-law suite in the basement with a wet bar that I will upgrade to a full kitchen. The in-law suite has its own entrance and code compliant window well exit in the bedroom. The house has one HVAC system and one electric meter. The HVAC system is located in a vestibule and it is accessible to both units. The electric panel is in the garage.
It is my understanding that I don’t need a sprinkler system but I do need to assure a one-hour fire rated assembly between the units (main house and ADU) which primarily will target the ceiling assembly and ensure the proper fire blockings in the walls. The ceiling is currently 7.5 ft high
I need to upgrade the current HVAC system as part of the project. When I upgrade the HVAC, I can create a two-thermostat zoned system. The zoned system would require modification of the duct system to include a bypass, zone dampers and a zone control board. Once the zoned system has been set up, the dampers will be controlled by the zone board and the thermostats. When one of the zones needs more cooling or heat, the dampers are regulated to send what is needed to the zone that is calling for it. My second alternative is to install a ductless mini split system for the basement ADU.
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Cheryl Cort
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