Quote:
Originally Posted by villagetinker
The ORIGINAL design for the tilt up wall would have included the necessary reinforcement (aka lintel beam) in the design of the wall unit. If the OP wants to WIDEN the opening this would void the original design. Therefore, I stand by my original comment, the OP needs to get the original house plans and possibly a structural engineer to review the original design to see if this is feasible.
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Lintels are not always used in Tilt Up construction, as they're not necessary in many cases. Tilt Up is different than Block/CMU construction, as it has a reasonable degree of tensile strength. It all depends on the size of the opening and the frame of what you're putting in the opening.
Knowing that The Villages puts a huge effort into saving money, I'd be surprised if their Tilt Up walls use cast in place lintels for every window .. but I've never watched one of them being built.