Slow but steady progress on the roof. I am working on sizing the natural gas lines given the appliance load.

Main room fireplace – 50,000 BTU (starter)
Master Bedroom fireplace – 30,000 BTU
Cooktop 60,000 BTU
Firepit – 65,000 BTU
BBQ Grill – 92,000 BTU
Dryer 20,000 BTU
Water heater ~ 85,000 BTUs
Furnaces 2x @ 110,000 BTUs each
Razor heater in lower garage 120,000 BTUs
Pool heater ~400,000 BTUs
36kw generator 730 cubic feet/hr natural gas ~730,000 BTUs.

For a total of 1,762,000 BTUs, ~ 1762 cubic feet/hr.

I suspect this will end up being a 2psi gas system.