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While they constitute only a small percentage of a construction budget, joint sealants and other waterproofing-related issues are responsible for a majority of post-construction complaints and requests for retrofits.
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How to get smooth concrete finish without the flaws and cracks.
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Deck expansion joint sealing is critical to parking structure performance and longevity. Even more critical than watertightness of joints is parking deck design that incorporates a structural slab waterproofing membrane under a wear-course or topping slab.
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Building a reputation for installing long-lasting, hard-wearing, maintenance-free floors means going the extra mile. The Fricks Company, Fort Worth, is known across North America for just that kind of work: dense, durable concrete floors built using aggregate surface hardeners...
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A concrete slab on grade or floor is going to crack. There are some exceptions to that rule when heroic measures are taken, like post tensioning or shrinkage-compensating concrete, but most slabs are going to crack.
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Your concrete slab is poured, but if that slab is going to have hard-wheel traffic on its surface, your concerns may be only starting.
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I hope that you may be able to shed some light on what an “acceptable” crack is in a residential slab. When it does crack, what is the industry standard for an acceptable crack?
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They come in all configurations, shapes, and widths: from gigantic to nearly invisible, from invisible to the naked eye but visible under a microscope to invisible even under a microscope—that is, the nonstructurally induced cracks.
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I am a structural engineer in New York. We generally restrict pour size to 60 feet by 60 feet. The contractor is asking for written documentation, such as from ACI, CRSI or a similar agency, to support this limitation. Do you know any reference to this pour size?
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Do I need to have control joints in the slabs and, if so, how far apart in a 15-foot-wide driveway? I really don’t want any but don’t want cracking, either.