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And since provide outweighs demand, sought-after contractors offer extra aggressive charges to get work and keep their crews busy. A GC would possibly also be able to supply the potential of ongoing work sooner or later, something you cannot present. With moisture a significant threat to straw bale houses, you would possibly think that wet climes don't lend themselves effectively to the strategy, but individuals have efficiently built straw bale houses within the rainy Pacific Northwest and snowy New England. The result's concrete with a low stoop, which is an engineer's fancy method of claiming that it has a very thick consistency when wet. Concrete with superplasticizers in it is very fluid when wet and really sturdy when hardened. When fluid concrete is used to make countertops, the aggregate is often a bit coarser -- gravel or crushed stone -- and as with the mixes utilized in development, it includes superplasticizers. Stiff concrete has a very thick consistency -- nearly like clay -- and sometimes its aggregate is sand.