We had the system replaced both units.
A c in attic load.
Girder load width half joist span live load on roof local requirements for wind and snow.
Well mainly it s a way to save space.
Unless you have a finished attic you probably aren t fond of spending time up there during a hot summer day.
Live load on attic floor local requirements.
But with proper ventilation you can at least bring those temperatures down to match that of the outdoor air.
The ceiling load may include items like drywall ducts recessed lights bathroom fans and attic insulation.
2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes.
However if the attic is intended for storage the attic live load or some portion should also be considered for the design of other elements in the load path.
Attic hvac systems save space.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
Our home has hot water heat and therefore the a c air handler is in our attic.
Most houses attics are built without flooring and are not designed to carry the heavy load of finished space.
The previous system had a gravity drain from pan and continuous drip to outside.
In other words when you get the basics right your attic insulation and air barrier you then need to focus on other energy conservation strategies like duct sealing and shade screens.
So why put an hvac system up in the attic at all.
A well insulated and air sealed attic in phoenix will only comprise 10 15 of the sensible cooling load.
When used for storage only dead load of attic floor not floored 10 lbs.
Ft dead load of roof of wood shingle construction 10 lbs.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
This new hi efficiency attic unit has to have a u shaped trap on the drain.
In addition to making the unit hard to get to for service high attic heat can trigger the high.
However in some cases the joists are intentionally built strong enough for the homeowner to later build out the attic.
Put it in an attic full of blown insulation and you re forcing it to work harder to vent its heat.
It has never dripped continuously but when the system shuts.