Are openings allowed on the frame beams? Is there a requirement in the specification?

Holes are allowed on the frame beam. In principle, at most 3-4 holes should be drilled on a load-bearing beam, and the positions of the holes should not be too concentrated. You can't drill more than three holes in the same position, which means the hole that can penetrate 1.5 inch pipe. In addition, when punching holes, try to be above the beam, not below it.

If the diameter of the hole is less than 100, you can safely punch holes. Generally, the punching position can be selected in the middle of the main beam. A position close to that neutral lay can also be considered. If the drilling diameter is greater than 100, drilling is not allowed in general, which is a potential safety hazard. If drilling is needed, the location of drilling needs to be approved by the property design institute.

Extended data

If it is cast-in-place construction, there must be some strengthening methods in the construction process. First of all, consider temporary reinforcement, such as adding temporary supports under the beam. In order to ensure that the quality will not continue to develop and cause other losses, the original design unit or a design unit with corresponding qualifications is entrusted to do structural reinforcement design, and the design documents signed by structural engineers and design institutes are issued.

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Hownet-opening a hole in the beam