I made a trip to the site to watch the excavator break ground. This was April 28. The site was staked and ready to go. Here is the site on the eve of ground breaking.
Posts under ‘2. The Site, Excavation, and Foundation’
“Spring” in the Rockies
May 3rd, 2010 by KTU | No Comments | Filed in 2. The Site, Excavation, and Foundation, Park City Mountain ModernFootings
May 16th, 2010 by KTU | No Comments | Filed in 2. The Site, Excavation, and FoundationFootings are the roughly one-foot thick slabs of concrete on which the foundation walls of the house rest. They are designed to be large enough to distribute the weight of the house onto the excavated soil surface such that the soil does not collapse from the load. As a practical matter they tend to be 20-72 inches wide depending on what part of the house they support. They usually need to be 24-48 inches below the ground surface (depending on region) to be below the frost line.
Placing the footings is a pretty remarkable thing to watch. A crew of 8 (Stone Construction) arrived at 7am and they left around 6pm. With another two hours of work the next morning to strip the forms and pack up, I had completed footings.
This not a fussy construction task. They take a trailer full of lumber and hammer it together in the rough shape they’re after. They pump the forms full of concrete, and then trowel the top surface to a snapped line, which defines the top surface of the footing. The foundation walls are then built on top of these troweled surfaces. The photos tell the story.

The excavated site. The excavator gets the surfaces at the right elevation and the surveyor pounds bars where the foundation wall corners are supposed to be.

More assembly. Code requires that footings be continuous, so when the elevation changes, the footing goes vertical.

The excavator overshot the lower level excavating a bit, so they had to build a 6 ft x 6 ft x 6 ft form to create the required footing surface at the higher level.

Forms with rebar installed and steel clips applied across top to hold forms together. The building inspector has to sign off at this point before they can pour.

The pump truck has a huge boom to get a 6 inch rubber hose to deliver the concrete at the right location. We used 6 trucks worth of mud...see them lined up.

Shooting the mud (at an incredible rate). You want to know what you are doing when the mud is flowing this fast.
Lower Level Slab – Tinted Concrete
June 8th, 2010 by KTU | No Comments | Filed in 2. The Site, Excavation, and Foundation, 6. Interior Materials and Finishes, Park City Mountain ModernThe flatwork guy (Gough Concrete) poured the lower-level slab on Thursday and saw-cut the control joints on Friday. I stopped by on Saturday to take a look. We used a 2% mix of Solomon liquid color, which they call “smoke.” It’s just right. The tint is significantly darker than natural concrete, but still comes across as gray, not black. This color in this concentration costs $39 per cubic yard of concrete. Given that the mud itself only costs $110 per yard, that’s pretty significant. However, given that for this I get a finished floor, I consider the tinted concrete a bargain. This floor cost $5.40 per square foot for everything (#4 rebar, pump truck, concrete, tinting, placing the concrete, finishing the concrete, coating with an acrylic sealer, and saw cuts). This did not include the 15 mil vapor barrier and the under-slab insulation, which my plumbing and heating guy did.
Tags: concrete floors, control joints, flatwork, slab, tinted concrete









