Robbe
I have used two books as guides to design. Metal Building Systems - Design and Specifications, by Alexander Newman and the Metal Building Systems Manual published by the Metal Building Manufacturers Association. They both provide some very useful information...
Thanks for the input everyone. I have been reading in Roarke's stress strain book on impact loads. It has some equations to use (chapter on dynamic & temp stresses). The author notes, however, that it is only an approximation and there are many variables that exist during the impact such as...
I am working on a design of a vertical lifting steel open-framed security gate positioned between reinforced concrete posts with the requirements that it not "fail" the impact of a truck (50 kips weight) traveling at 50 mph. (I am not designing the posts). Knowing that force is...
Ibeam,
The soil conditions for growing will be different than with no insulation. Because the insulation is rather shallow, the soil may dry out faster. Also, I'm not sure what problems one may have with roots damaging the insulation board (which of course you don't want), depending on the...
I agree with Carl. In our area (northern Minnesota) the standing joke is that we wait until January to pour concrete (-20F for the high). With blankets or straw as insulation, you should have no problems. I would suggest to seal it with a curing and sealing compound so that if/when chlorides...
I'm from northern Minnesota and this type of construction, especially for residential, is becoming very common for structural slabs on grade. Frost depth here is 5-6 feet deep and it usually becomes much cheaper than excavating for full depth footings if a full depth basement is not desired.
As...
