precast lintel
precast lintel
(OP)
Could anyone shed some lights on the 16 foot long precast lintel I plan to use for a non-load-bearing interior masonry wall?
1. Does the precast lintel somehow need to be positively connected to the CMU at jamb, with dowels? If so, how?
2. Does the rebar in the CMU wall sitting on the lintel need to be doweled/drilled into this precast lintel, or if grout would be sufficient to hold them together?
3. Whose responsibility is it for the design of this precast lintel? Should EOR call out and detail the reinforcing in the precast, or should it be precaster' responsibility?
Thank you.
1. Does the precast lintel somehow need to be positively connected to the CMU at jamb, with dowels? If so, how?
2. Does the rebar in the CMU wall sitting on the lintel need to be doweled/drilled into this precast lintel, or if grout would be sufficient to hold them together?
3. Whose responsibility is it for the design of this precast lintel? Should EOR call out and detail the reinforcing in the precast, or should it be precaster' responsibility?
Thank you.






RE: precast lintel
2. The bars reinforcing the wall above the lintel should be hooked into the lintel. When the lintel is filled the bars will be developed. Check that the depth of fill in the pcl can provide the hook development length for the vertical bars above.
3. The pcl manufacturer should provide load tables or some such data for vertical and lateral loads such that you can choose an appropriate design strength for the pcl and reinforced cmu courses above, if needed. CastCrete has a good set of data tables, but they are specific to that manufacturer (which is typical).
RE: precast lintel
2. Grout may be enough, but I would prefer some nominal dowels from lintel to CMU at perhaps 4' centers.
3. Design is the responsibility of the EOR. In some jurisdictions, he may delegate it to the precaster, but for something this simple, it is preferable for the EOR to design it.
BA
RE: precast lintel
RE: precast lintel
BA
RE: precast lintel
RE: precast lintel
RE: precast lintel
Hokie66 was right that I was thinking about solid lintel such as the load table listed in the NCMA TEK. With solid precast lintel, it makes the dowel suggestion provided by UcfSE and BAretired difficult to execute....unless I'm missing something here?
I did see the load table provided by Cast-Crete with U shape precast lintel that works just like UcfSE, BAretired, and haynewp described. Why did not pursue it? this is a one hundred million dollar project with a lot of precast panels, metal panels, curtain wall, etc., you name it. But I have only two such lintel for the entire project. I therefore figured it would be more cost effective to use non-proprietary solid precast lintel (provide by the precast cladding supplier), instead of using the proprietary Cast-Crete products.
However, back to my 2nd question, I think Cast-Crete's U shape lintel is the only way to somehow tie the CMU rebar above with the lintel together. Otherwise, I'm not sure how we can tie them together.
RE: precast lintel
BA
RE: precast lintel
RE: precast lintel