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It was not until 1880 that an era of construction based on reliable mild steel began. By that date the quality of steels being produced had become reasonably consistent. The Home Insurance Building, completed in 1885, was the first to use skeleton frame construction, relying on its masonry cladding for stability.

Wrought iron was actually "wrought" (i.e. worked or hammered) into bars and has been used as a construction material for thousands of years. Most metals used for construction purposes are alloys. For example, steel is an alloy with iron and carbon being the primary elements.

Brush cutters are powerful tools that carry some risks if proper safety procedures are not followed. You should never operate a brush cutter without a harness, nor should you use a brush cutter that is not equipped with a handlebar. The handlebar is what helps you control the tool, and it also serves as a barrier to prevent injury should the machin

An average commercial steel building costs between $16 and $20 per square foot, including building package (I-Beams, purlins, girts etc.) , delivery, foundation and the cost of construction.

Brush cutters are powerful enough to cut through overgrown brush that a lawn mower or line trimmer cant handle. They also cut in hard-to-reach areas where larger machines cant enter. However, most brush cutters are cumbersome to operate, and if you have to clear a large area, fatigue can occur. Most brush cutters have a straight shaft and anti-vibr