Even if the scaffold is only out of level by a very small amount, it is not considered safe. Scaffolds must be exactly plum and exactly level for it to be considered safe. “It’s close enough.” There’s no such thing as close enough when it comes to getting the scaffold level. Some are designed to be raised 18 inches and many have a notch or a weld towards the top of the jack which is its maximum raising height and prohibits you from screwing the Jack any higher past that notch. You must check with the manufacturer of the screw jack that you are specifically using. Each manufacturer designs his screw jack differently, and some design them so that they can be raised higher than 12 inches. It is suggested many times that a screw jack can only be raised 12 inches. This is a common question that many people don’t actually know the answer to. Every other foundation must have a base plate or screw jack and mud sill. ![]() The only foundation that does not need a mud sill is concrete. Even with a base plate or screw jack, it also needs a wooden mud sill if it’s going to be setting on dirt, gravel, grass etc. It must have a base plate or screw jack at a minimum. ![]() In other words, you can’t take a frame scaffold and just set it on the ground or even on concrete. Scaffolds can be built on catwalks, on the space shuttle and anything else that someone may have to work on. There are many different foundations out there there could be dirt, rock, mud, water, asphalt, grass, a roof, a metal top to a tank or concrete. An “adequate foundation” is what OSHA says that every scaffold must have. What I will try to do in this article is to address both things that are commonly found on any construction site and not so obscure that it would never be utilized.įor starters, any scaffold should have a base of some sort. Many of you being in the construction industry, maybe very well aware of most of these OSHA guidelines for safe scaffolding. The term “little known,” is subjective at best. Words: Zach Everett, Corporate Safety Director Brazos Masonry Inc., Legacy Masonry Inc.
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