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RE: Precast Column Base Connection[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Precast Column Base Connection
- From: "Jim Getaz" <jgetaz(--nospam--at)shockeyprecast.com>
- Date: Thu, 5 Oct 2006 09:00:25 -0400
I should have mentioned the provisions we take for foundation to precast Splice Sleeve connections to account for tolerance. There are four:
We use a sleeve that is two bar sizes larger than the bar, i. e., #11 sleeve for a #9 bar and a #14 sleeve for a #11 bar. And one probably could get a “#12 sleeve” for a #10 bar, as I understand they have a sleeve for a metric bar that is about what a #12 bar would be.
provide the foundation dowel with a
We detail the foundation dowel to project 1’ to 2’ higher than is required, with the prescribed dimension for our survey crew to mark. Then our erection crew cuts to the mark and has a bar projecting the right height.
The foundation dowels are A 706 (weldable) material. This helps for bars cast too short despite being detailed overly tall.
still end up suggesting to foundation contractors how to grout or epoxy bars in
despite these steps. And I saw six bars in the end of a shear wall this summer
with only part of their
When we have a lot of Splice Sleeves required in precast-to-precast joints in panels of the same shape, we will make steel formwork instead of wood so that the holes for the dowels do not enlarge when the panels are stripped each day.
And NMB understands that they have a product that is difficult to use. They have collected these stories and others from other people and provide them to their customers and they have made a bunch of tweaks a to their product over the years and provide or will tell you where to find parts that others make that can make life easier when using their products. I think that may be a run-on sentence. Erico is also helpful, but we have just gotten in the NMB habit, so I cannot speak to all of their help.
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