Being the beam additional strength metallic parts of the ring condition where the rim section is welded

摘要

PROBLEM TO BE SOLVED: To provide a beam reinforcing metal fitting, by which the degree of freedom of the installation of piping to a through-hole bored to a beam is improved while the through-holes having different sizes can be reinforced up to necessary strength, saving the waste of a material even to the through- holes having different sizes.;SOLUTION: The ring-shaped beam reinforcing metal fitting 1 is fitted into the through-hole 3 having an inside diameter R formed to the beam 2 composed of H-steel, and fixed by welding an outer peripheral section 4 at the peripheral section of the through-hole 3. The outside diameter d1 of the beam reinforcing metal fitting 1 has a size capable of being fitted into the circular space section 6 of the inside diameter R formed in the through-hole 3, and a length A in the axial direction of the metal fitting 1 is formed at a size thicker than the thickness t1 of the web section 2w of the beam 2. The inside diameter d2 of the beam reinforcing metal fitting 1 has a size capable of being inserted into the piping 5 on the inside of the metal fitting 1, and is formed at a value smaller than the 0.8 times of the beam depth H of the beam 2.;COPYRIGHT: (C)2003,JPO