Why is I-beam good in steel?
It depends on what is the shape of the steel tubular pipe, or solid. Most of the I-beam are solid. If the square steel is also solid, then I will save half of the material. I can't say which one is good. When it comes to strength. Of the same size, of course square, better shaped. Much greater intensity. Modern architecture is not above the real, I can do ah.
I-beam is also called steel girder (English name Universal Beam). It is a strip of steel with an I-shaped section. I-beam is made of ordinary I-beam and light i-beam. It is a section steel with an I-shaped section.
Square: solid, bar. Different from the square pipe, hollow, belong to the pipe. Steel (Steel): material of various shapes, sizes, and properties required by pressure processing for ingots, billets, or steels. Steel is an important material for national construction and the realization of the four modernization indispensable, wide application, wide variety, according to the different steel profile is generally divided into sections and plates, pipes and metal products four categories, in order to facilitate the organization of steel production, supply and improve order management, and divided into heavy rail, light rail, large steel, and steel, small steel, steel cold-formed steel, high-quality steel, wire rod, steel plate, steel sheet, electrical silicon steel sheet, strip steel, seamless steel pipe, welded steel pipe, steel, metal products and other varieties.
I can't say which one is good. Most of the I-beam is solid, and if the square steel is also solid, from the material savings interpretation, then I will save half of the material.