this is under nyc building code which is IBC as modified. The AHJ is not helpful
I have a plan from an architect for a noncombustible one family dwelling.
floors are 1 hr rated. the architect has not responded to me on ul detail. the only one on his plans is UL 524 which doesn't say anything...
i have a fire rated ceiling in a noncombustible one family house
the ceiling assembly is 1 hr
Its a sheetrock ceiling with steel joist., the ul design number doesn't have any information on opening protection
i'm looking for guidance on how to ceiling connection from equipment below and where...
sorry if i'm beating a dead horse
hvac for 5000 sf (1STY) building
It is and alteration to combine 5 retail stores into an nice food market. they have some seating at front for people to have lunch and checkout register.
i did my load calcs , looked at supply/ exhaust / ventilation/...
ok
i see ashrae formula Ps=CpPv and Pv=rhoUh^2/2gc then Uh=Umet(delta met/Hmet)^alpha met(H/delta)^(a)
i'm having finding cofficients to plug in
i found another formula in(MODERN HVAC) Pw=0.000482Vw^2
Pw = VELOCITY PRESSURE HD in inwg
Vw= wind speed mph
for 20 mph = 0.1928 inwg
so, if space...
if a conditioned space has positive pressure how much of door infiltration is applicable (1 story building with automatic door and no vestibule)
Initially looking at supply/exhaust
Process exhaust and Mua
Bathroom exhaust
Ventilation
space was slightly negitive . so i can introduce more mua...
thanks
thats my point
i'm looking for someone with experience in the area , not 5 techical papers with an unlimited buget .in this economy its hard to turn jobs down. so, we take them an try to figure them out
cut to the chase on big picture
i have ashrae volumes 1-4
any thoughts on determing a infiltration rate for a market 2 automatic sliding doors . one entrance , the other exit
i was looking a some data for estimating passages per occupant per hr and come ou .
its a one story building with roof hvac units.
if building pressure is positive how much can...
