Rebar dowels are used to brace the joints between two concrete elements. When the rebar is not being used to hold the concrete members together, post-installed anchor theory can be applied. This eliminates the need to embed the bar deep enough into the base material to develop the rebar for steel failure.
d) Check dowel embedment into footing for compression: ACI 25.4.9 yb dc c fd l f but not less than 0.0003fydb or 8” where d b is the bar diameter NOTE: The footing must be deep enough to accept l dc. Hooks are not considered effective in compression and are only used to support dowels during construction.
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Hole Depth (mm) Number of Fixings: 150ML: 235ML: 280ML: 345ML: 360ML: 380ML: 400ML: 650ML: M8: 10: 80: 30: 55: 57: 85: 87: 95: 78: 128: M10: 12: 90: 17: 36: 38: 56: 58: 63: 65: 71: M12: 14: 110: 11: 22: 24: 34: 35: 38: 20: 34: M16: 18: 125: 5: 11: 13: 17: 17: 19: 11: 17: M20: 24: 170: 2: 5: 7: 7: 8: 8: 6: 8: M24: 28: 210: 1: 3: 5: 4: 5: 5: 3: 5: M30: 35: 270: 0: 1: 3: 2: 2: 2: 1: 2: M36: 40: 330: 0: 1: 2: 1: 1: 2: 1: 1
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There is a need for judicious balance of cover depth and crack width requirements. A possible economical solution for this paradox is the placing of a second layer of corrosion-resistant reinforcement like stainless steel rebars or meshes or FRP rebars in the concrete cover to distribute the cracks.
Jun 26, 2014 · Obviously, the depth of embedment is also a major factor. When anything is set in concrete, the hole diameter vs. the type of anchoring material used will play a critical role in the eventual pull out strength. As a general rule, you want the pull out strength to be greater than the tensile strength of the stud, anchor bolt, rebar, etc.
My assumption #2 is that the required embedment depth of a rebar dowel depends on the bond strength of the epoxy mortar and the load that the rebar is required to carry. Conservatively consider that M10 rebar is required to have a pull-out resistance equal to the force that would yield it at 500...
You must have a load bearing surface (footer) , and the specs will vary depending on soil type, frost line, and load. Second, if you wanted to dowel in to concrete you must use epoxy to anchor them. If using #4 rebar, i would go slightly larger on the bit (5/8") to allow enough epoxy for bonding and an easier initial fit.