We define types of foundations and their common vulnerabilities also We use the three Carson Dunlop Associates Sketches shown here to comment on the occurrence, causes, and significance of cracks and movement in poured concrete slab construction. Natural stress points in the slab." Types of Poured Concrete Slab Floors - Different Implications of Cracks & Movementīefore we describe crack, movement, and damage patterns and diagnosis in concrete slabs, we need to introduce three different types of poured concrete floor slabs. If you leave out control joints the cracks will occur in a messier pattern at To you to either provide control joints, or not. Other types of concrete cracking such as due to impact or loading are discussed in other articles at this website.Ĭracks come to the job along with the concrete, riding in the same truck! At a Journal of Light Construction conference (Boston 1985) a lecturer informed us that "Every concrete truck that comes to your job to pour a slab has at least four cracks in it. See details at PYRRHOTITE INCLUSION CRACKINGĮach type of concrete foundation, wall, basement slab, floor slab, or slab on grade crack is discussed and described with photographs below. Concrete cracks due to inclusions of shale and Iron sulfide mineral (pyrrhotite) cracking.See details at FROST HEAVES, FOUNDATION, SLAB Frost heaves or expansive soil damage can cause substantial damage to basement, crawl space, or garage floor slabs in some conditions.See details at SETTLEMENT CRACKS in SLABS
Settlement cracks in a slab indicate inadequate site preparation, such as failure to compact fill on which a slab was poured.Shrinkage cracks in a slab are unlikely to be of any structural concern but can be a source of water entry or radon entry in buildings and may form.Those likely to be important and potentially costly to repair. Types of foundation cracks, crack patterns, differences in the meaning of cracks in different foundation materials, site conditions, building history,Īnd other evidence of building movement and damage are described toĪssist in recognizing foundation defects and to help the inspector separate cosmetic or low-risk conditions from Four Types of Cracks in Concrete Slabs & Floors We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.
Patio slab crack repair how to#
This article series describes how to recognize and diagnose various types of foundation failure or damage, such asįoundation cracks, masonry foundation crack patterns, and moving, leaning, bulging, or bowing building foundation walls.
Patio slab crack repair cracked#
This article describes four common types of cracks that occur in poured concrete slabs or floors and explains the risks associated with each, thusĪssisting in deciding what types of repair may be needed.Ĭracks in concrete floors or slabs occur in poured concrete slabs may be found both in basement and in slab on grade or "patio home" construction and have a variety of causes and cures that we discuss here as we explain how to repair cracked concrete floors and as we describe slab on grade construction or "patio home" construction cracks and as we review the diagnosis of cracks in ceramic tile over concrete slab floors, We have no relationship with advertisers, products, or services discussed at this website.įloor slab & tile crack diagnosis & repair: InspectAPedia tolerates no conflicts of interest.
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