Embedded Pole
Embedded Pole
(OP)
I am reviewing a shop drawing for sign foundation. The two steel pipes supporting the sign go 15'0 below ground level and 25' above. The contractor is asking about the means of holding the steel pipes straight while pouring the concrete around it at the foundation level.
He does not want to use two cranes to hold the steel pipes (a suggestion by a senior engineer at my firm) as that would increase the construction cost.
I am guessing I could design a splice but I am not so sure about my approach in doing so.
He does not want to use two cranes to hold the steel pipes (a suggestion by a senior engineer at my firm) as that would increase the construction cost.
I am guessing I could design a splice but I am not so sure about my approach in doing so.






RE: Embedded Pole
Consider using two poured oncrete caissons with rebar cages, and embedded anchor bolts for the sign. Design a new base for the sign columns to fit on the caissons and attach to the anchor bolt pattern. This will make it possible for the use of one crane to do the lifting and placement.
Otherwise, the contractor would have to guy off the assembly while the crane was holding it to pour the concrete, and while it cured to a sufficient level to be safe. Lots of crane time.
Mike McCann
MMC Engineering
RE: Embedded Pole
BA
RE: Embedded Pole
RE: Embedded Pole
RE: Embedded Pole
RE: Embedded Pole
Be sure they do not just set the pipe/pole on/in the soil at the bottom of the hole, too. It should be held above the soil by the topside props or by a precast or similar support at the bottom of the hole.
RE: Embedded Pole
I think it is more typical to use anchor bolts and a base plate.
RE: Embedded Pole
Really, this is his problem, not yours.
Mike McCann
MMC Engineering
RE: Embedded Pole
Dik
RE: Embedded Pole
RE: Embedded Pole
We finally decided to lay it on the contractor as msquared had suggested.
a2mfk - it is a project for a private owner