Anchor in precast plank
Anchor in precast plank
(OP)
I have to attach a sunshade hanger from an 8" precast plank. The cores around have been grouted solid. In my design I am assuming that the grouted area+plank concrete (aprox 8"x24") is one solid concrete area. Is that a correct assumption?






RE: Anchor in precast plank
Do not drill into the area that is not grout - the original ungrouted section, and be careful not to hit any rebar in the grouted section too, although that area is probably less critical.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Anchor in precast plank
RE: Anchor in precast plank
RE: Anchor in precast plank
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Anchor in precast plank
At 24" wide, it could be a wet cast plank that has larger holes with a smooth interior face. In that even, there are creative ways to benefit from the large cores.
What kind of loads are you looking at and in what direction?
Dick
Engineer and international traveler interested in construction techniques, problems and proper design.
RE: Anchor in precast plank
I have huge loads, I have a horizontal (tension in anchor) of 5.6 K and vertical (shear) of 1.86 K. I am not so much worried about the shear on through the plank because it sits on a cmu wall but the tension is too high.
The cores are 7 3/8" oc.
RE: Anchor in precast plank
RE: Anchor in precast plank
Use an anchor that is designed for hollow masonry.
RE: Anchor in precast plank
The precast plank supplier can supply information on the strand location. From the information on the core location and plank width, is sound like a "Flexicore" type plank that usually has round, smooth horizontal cores instead of the more common rough, irregular texture on the inside of the cores of extruded or zero slump concrete. This may help to track down the supplier.
Dick
Engineer and international traveler interested in construction techniques, problems and proper design.
RE: Anchor in precast plank
It may be moot if they may scrap the entire idea, but the reactions from Joe's last post were what concerned me about that detail, plus there are not many situations where I would be comfortable mounting to the end of a hollow core panel.... For those of us doing lots of anchor design, you know this could be an issue even in a tilt panel:
New PostJoeBaseplate (Structural)
31 May 11 14:21
Dick,
I have huge loads, I have a horizontal (tension in anchor) of 5.6 K and vertical (shear) of 1.86 K. I am not so much worried about the shear on through the plank because it sits on a cmu wall but the tension is too high.
The cores are 7 3/8" oc.