Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
(OP)
Most time, I used L-shaped slab-to-grade beam dowel bars, but a contractor prefers pouring monolithic concrete with no dowels.
Pros and cons?
Pros and cons?






RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Dik
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Dik
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Dik
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Agree?
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
BA
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
- The side cover for the reinforcement will need to be increased for casting directly against soil (no forms).
- I would usually show the soil casted sides as a rough line that slopes. For sand, 60 degs from plumb is probably the minimum. Who will be watching when the beams and slab are cast to verify that voids in the beam are prevented?
- Integrating the beam and the slab allows a shallower beam and adds the slab as part of the beams compression zone (usually just take it as gravy).
- Better shear transfer between beam and slab
- One pour instead of two over the slab area
- For anything less than a 30" deep grade beam, I'd probably detail it this way.
If you are concerned about differential settlement, you could detail a sheet of rigid insulation along the bottom.
I don't like the idea of using sandbags under a slab on grade. In my mind, the bags will allow voids. If you just put sand down, the sand will provide a uniform sub base.
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
RE: Monolithic pouring with NO L-shaped slab-to-grade beam dowel rebars
Dik