windows
sliding single hung awning jalousie hinged/casement factory projected
lock types
more boring precis reading
mortise
bored (cylindrical) lock
rim lock
padlock
high rise smoke stack effects
thermal layering
natural stack effect
reverse stack effect
mushrooming
where is ed fire main water supply from?
the municipal system - fire hydrants
2 times where it is acceptanle to advence without a charged hose?
when the fire is under control or there is already a charged hoseline available