Location of Concrete Beam / Wall Pour Joint
Location of Concrete Beam / Wall Pour Joint
(OP)
I would like justification to determine the location of a pour joint for a concrete beam and wall. The wall is approximately 2.0 meters high supported on piles, which is designed both as a retaining wall (elevation differnce between finihsed slab and outside grading )and beam to support the contiuous warehouse building loads from above. The contractor has to heat and hoard the concrete and given the size of warehouse permiter, wants to divide the work into two / three pours. Thus, where is the pour joint and why? The reason I am asking is becase I have heard 1/4 , 1/3 and 1/2 span points. Is there some agreement?
Would this change if the builing loads where point loads directly onto the piles below? What if the point loads were offset from the pile locaitons and at some location along the span? How do you determine where the pour joint location is then?
Thanks in advance for your advice.
Would this change if the builing loads where point loads directly onto the piles below? What if the point loads were offset from the pile locaitons and at some location along the span? How do you determine where the pour joint location is then?
Thanks in advance for your advice.






RE: Location of Concrete Beam / Wall Pour Joint
Anyway there are shear forces at the interface, and all the sound meaures of keeping roughness, ande clean the joint remain valid.
Reinforcement must be designed as the beam requires (as if deep beam if deep beam) and at the joint points a supplementary revision of passing the shear in shear friction with enough development length to each side needs be made.
Of course if you have some moment at the joint, the required capacities need be spliced to both sides of the joint as well.
RE: Location of Concrete Beam / Wall Pour Joint
So for spanning beams/joists etc., the joint is usually preferred in the middle third of the span.