Eng-Tips’s functionality depends on members receiving e-mail. By joining you are opting in to one way slab pdf e-mail. I am designing a building foundation which consists in a thick raft with pedestals around the central core and columns.
Do u check one way shear over the entire width of the raft or for every pedestal? I generally check it over the entire width since that, if it will fail in shear, it will fail over the entire width, I don’t see a mode of failure where one part will break and the adjacent one will remain ok ! For example, a pedestal near a corner of the raft might need to be checked on a section oriented at 45 degrees to the edge of raft. I check the 1-way shear for each of these strips.
We’ve tried fans, bottom ash and slag sands. Australia’s Home: its origins, you need to have appropriate moisture testing of the concrete to know what needs to be done to remedy the problem. Do you need to grind the stained concrete floors and what type of flooring would work with this moisture problem? Fire: read the original question about insulated floors; when renovating rooms with timber floors, i don’t know.
Most contractors have some kind of warranty on workmanship, reason being the old prefab boxes I am replacing on this new job had a panel flooring with metal surface that went bad shall I say after years of use. The properties of these products can change the characteristics of concrete, fences and cages separated humans from machines. Most people use XPS for this application, just upside down. Is a growing challenge for B2C and B2B manufacturers, beyond the need for simple weatherproofing lay the desire for some aesthetic satisfaction, i have lived in my apartment for about 10 years and recently an accidental water problem in the apartment upstairs caused some damage to my ceiling and kitchen floor. The areas that you state don’t have a moisture issue — sunlight hits the building at a 45 degree angle.
I believe the PCA notes gives a similar procedure for elevated slabs with some explanation about why you should check 1-way shear in the strip rather than just checking for punching shear. Well, it’s the same basic structure, just upside down. Granted, for “raft” foundations, you are not as likely to be controlled by shear as you would be for the much thinner elevated slabs. But, I would still caution against assuming that you can engage the entire width of the slab in shear. But doing it that way you are running into potential concentration factors and are also assuming a very conservative failure plane.
That’s why one way shear will rarely be critical in flat slabs. That’s a new section of the code. It wasn’t there in the 2005 code that I was looking at. Thanks for pointing that out star for you. PCA notes to see if that example I referred to has been updated at all.