Preparing for 2,200 cubic yard concrete pour.
Setting 1.5" diameter anchor bolts, 8ft long. Walking on #8 rebar spaced 12" on center and 7ft above the mud mat.
not my cup of tea!
"Walking on #8 rebar spaced 12" on center" my suggestion, as it is done here, use chunks of thin plywood like snowshoes. Less hazardous, and much faster.
I am pretty nimble walking around on a mat but I like the snowshoe idea!?ÿ
Iron Workers are pretty good at fishing tools out of the cage, I hate the feeling of dropping things in environments like that.
Hope the tolerances are something reasonable...: 🙂 ?ÿ
The tolerance per Engineer is 1/8", which is unachievable with current procedures. If they really need to be that accurate, then the contractor should core and grout each bolt. It is difficult to control 2000+ yards of concrete. I believe they are misinterpreting the definition of anchor bolt tolerance. It is my understand the plans call for the bolts to be measured at an accuracy of 1/8", which is still a tall task.
Today I measured over 100 DYWIDAG's. These are 1.5" dia anchor bolts (elliptical) with a very coarse left-hand thread. They look like large rebar.
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this is my jam... love big pours.
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How do you like that prism-holder thingy (I can't recall the actual name at the moment)? I've been considering one for quite a while and just haven't pull the trigger on purchasing.
You are referring to the Marksman. It works great. Just make sure the bottom feet are secured. Dropped a foot yesterday from the top 7ft down to the bottom of the mat. I had to send a skinny guy through the 12" cage to retrieve it.
This job just looks like no fun at all for me.
Glad you seem to excel with this type of work.
Thanks for sharing.
@leegreen i often remove my vest working on deep mats 'cause nearly every time I'll drop a scribe or tape measure or something... I've dropped my controller a few times too. grr...