http://www.flickr.com/photos/97859466@N05/10599973385/[/URL]
The detail shows the X bars extending 2'6" past the Spring Line at the floor of the pool. As you can see in the picture, the X bars do not extend into the floor anything like the detail.
http://www.flickr.com/photos/97859466@N05/10600022376/
The pool contractor called the steel sub who assured us that he always does it like this. I didn't fall for that. He became upset. I had several other people chew me out today so I wasn't interested in what he had to say and said goodbye. I asked the pool contractor to call the engineer.
I explained the situation. Since there is almost no radius at the bottom, the contractor thinks that the Spring Line is the wall of the pool and he is 2'6" from the wall.
The engineer told me to follow the vertical Spring Line until I see another 2"6". That 2'6" is from the top of the bond beam to the horizontal Spring Line. The Spring Line is the point at which the arc commences. The arc shall not commence any further than 2'6" below the top of the bond beam. He said that the arc acts as a buttress. Without that buttress the pool must be re-engineered.
I didn't know that. If the steel had been a few feet longer, I would have approved the work.
This applies to raised bond beam applications and pools that are built as retaining walls and most likely just to this particular engineer's design. In other words, you can't use this information so forget that you ever saw this.
So if you can't use this, what's the point of telling you? Ask questions is the point. Ask lots of questions. The more questions that you ask, the more stuff you're going to find out.
Last edited by a moderator:
