Thanks Tech for the informative lesson on soil properties. Yes I mean Gauge pressure. Yes the overall stress on the cable is higher. I assume that this slab was built right on dirt, much like a monolithic slab. I'm curious as to why, if soil in the area tends to be sketchy, no piles were...
I think if you try to straighten that slab without the benefits of piles driven under it, you are fighting a losing battle. I'm not sure what helical ground anchors are, like Dinosaur said, but that may help. Think of it as building a suspension bridge with no towers to support the main cables...
False,
Well, I don't know about houses, but I've never done A post tension slab on a high rise ground slab. Most of those slabs were somewhere around 4-6 feet thick with #11 rebar. I've done ground slabs with mesh or rebar only. The way cables are designed, unless you are running groups of...
Hi all,
I do agree with tech maximus, except for his statement that cables are only stressed once. I am an Ironworker foreman in Boston, and have worked with rebar and post tension cables since 1985. Cables are often stressed in stages. Sometimes as many as 3 times on single strand pulls. Most...
