Bricks, Masonry, Asphalt and Concrete - Pre-cast foundations
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ty163
08-12-05, 03:18 PM
Looking into pre-cast foundations for modular home application. The company says 5000psi, studded and insulated. Wondering if anyone had thoughts or experiences on them. Also what is an average cost for these foundations? I know probably size dependant, but looking around 2000-2500sf. total, 2 story.
TRY163
TRY163
Concretemasonry
08-12-05, 04:03 PM
They have been around for about 30 or 40 years, but are still not common because of lack of flexibility, price and scheduling.
Forget about the 5000 psi - that is just for advertising. They have that type of concrete because it is required to strip out of the molds and handle for inventory where they cure. The hight of the house is not a factor, just the height of the soil behind the wall.
No question about the ability to keep out soil and hold up a house. Typically, the advertised insulation values are a little high (R-value wise) since they are based on one portion of the wall and not a actual test. Still, insulation for a basement is not that critical since the soil is not as cold as the air.
They have been pricey except for basic boxes without too many openings, grade changes or corners.
From an engineering standpoint they do the job.
Dick
Forget about the 5000 psi - that is just for advertising. They have that type of concrete because it is required to strip out of the molds and handle for inventory where they cure. The hight of the house is not a factor, just the height of the soil behind the wall.
No question about the ability to keep out soil and hold up a house. Typically, the advertised insulation values are a little high (R-value wise) since they are based on one portion of the wall and not a actual test. Still, insulation for a basement is not that critical since the soil is not as cold as the air.
They have been pricey except for basic boxes without too many openings, grade changes or corners.
From an engineering standpoint they do the job.
Dick