Masonry Reinforcing Placement
Masonry Reinforcing Placement
(OP)
I need some information.
Is there documentation that would allow a mason to place fertical reinforcing after the cells are grouted and after the grout has begun to set up (10-30 minutes after the cell is filled)?
My understanding is that reinforcing is in place prior to laying up the units or can be placed after the units are laid up (with the use of positioners). If reinforcing is placed after the units are laid up, grouting is never done before the reinforcing is placed.
Is there documentation that would allow a mason to place fertical reinforcing after the cells are grouted and after the grout has begun to set up (10-30 minutes after the cell is filled)?
My understanding is that reinforcing is in place prior to laying up the units or can be placed after the units are laid up (with the use of positioners). If reinforcing is placed after the units are laid up, grouting is never done before the reinforcing is placed.






RE: Masonry Reinforcing Placement
How high are the walls and is it a flexural wall or a reasonably axially loaded wall?
Normally, reinforcement must be in place before grouting. The placement tolerence/positioners can vary widely. Clean-outs and inspection practices also vary widely depending on demonstrated performance (video, etc.).
Dick
RE: Masonry Reinforcing Placement
low lift grout method
according to my CA, bars are being pushed (hammerred at times) into the grout
IBC 2000 - middle of the USA
exterior load bearing walls - typical floor and roof load for a two story building
wall supports vertical load and lateral load.
RE: Masonry Reinforcing Placement
If the reinforcement is in there for strength, then I would not take responsibility for it. I never put myself in a position where I am taking responsibility for something I could not observe on site.
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement
My question was where is the documentation that would allow the above practice or disallow it?
RE: Masonry Reinforcing Placement
Any time you have low lift grouting, you open to quick, informal construction without the planning that comes with more reliable high lift grouting. You have more time to inspect and agree on the adequacy of rebar placement, cleanliness of the grout cells and grouting procedures/sequence. Self consolidating grout (SCG) works well for higher walls if the code in effect is new enough to permit it.
Greater spacing of heavier rebat usually can give you more accurate steel placement if it is critical.
Dick
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement
Part 3-Execution
3.2E - "Place reinfrocement and ties in grout spaces PRIOR to grouting"
That's page S-19 in the ACI530-05
RE: Masonry Reinforcing Placement
ACI 530-05
Commentary.....
pg. SC-18
3.2 E.
Loss of bound and misalignment of the reinforcing can occur if it is not placed prior to grouting.
RE: Masonry Reinforcing Placement
when something like this happens it is not up to you to prove that he is wrong, it is up to him to prove that he is right!
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement
RE: Masonry Reinforcing Placement