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Showing posts from April, 2009

From Gimp

Image
I made this in about 30 seconds with GIMP 

Flooring over a wet slab

Yesterday I met with Joshua Reed of Floor Seal Technology. He had some very interesting photos of failed flooring installations over concreete slabs. Read the specifications for your adhesives and flooring materials. Concrete slabs can sweat moisture. Average flooring can handle 1-2 pounds of water pressure from the slab. Epoxy sealers can hold back a water pressure of 3-5 pounds. He mentioned one slab that had 20 pounds of water pressure upending the flooring.
Always test your slab moisture content before laying down the flooring. ASTM F1869-04

Order of assembly of concrete slabs

Reinforcing steelConcrete formsVapor retarderCompacted sandCapillary breakNatural Earth

Detailing in Revit

Autodesk University 2009 had a presentation on detailing in Revit. Paul Aubin provided a free chapter from his book here.

Structure of tall buildings

The structure of buildings can be described as a cantilever starting at the ground.
Take a look at the continuing education piece here.