Horz Rebar Splice in Pit Wall
Horz Rebar Splice in Pit Wall
(OP)
I've designed some large pits in the ground.
They are 40' long and 15' wide and 16' deep. Walls are 20" thick.
That said, I received the rebar shops today and they have the horizontal bars of the pit walls spliced at the midpoint of the 40' long wall. Its a lap splice. The splices are not staggered. They are #6 bars.
Given this, I feel like these splices ought to be staggered, but can't find a code provision requiring that.
Have you guys run across this before? If so, what's your opinion of the splice of the continuous horz bars? Should splices be staggered?
They are 40' long and 15' wide and 16' deep. Walls are 20" thick.
That said, I received the rebar shops today and they have the horizontal bars of the pit walls spliced at the midpoint of the 40' long wall. Its a lap splice. The splices are not staggered. They are #6 bars.
Given this, I feel like these splices ought to be staggered, but can't find a code provision requiring that.
Have you guys run across this before? If so, what's your opinion of the splice of the continuous horz bars? Should splices be staggered?






RE: Horz Rebar Splice in Pit Wall
2) If your 40' wall is spanning horizontally, that changes things a bit. There is still no ACI provision that I know of that requires staggering but, in the 318 commentary section, they do recommend placing lap splices at locates of reduced flexural stress. Non-mandatory.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Horz Rebar Splice in Pit Wall
See ACI Section 12.15.2 (in ACI 318-11)
Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies
RE: Horz Rebar Splice in Pit Wall
Additionally, conservatively, even though I am going to stagger the splices, I would still use class B splice, to make the lap length splice 1.3 x's the development length.
All that being said, I don't like all of the splices lining up....even though I do not see a code provision that prohibits it. So I am probably going to require staggering of the splices as well.
I don't want to be overly conservative, but at the same time, I want to do what is right.