Foundation Types: Difference between revisions
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*Spread footing - 'inverted T' actually holds the pressure on the soil. Grade beam functions like a beam - spanning 2 deep piles, not relying on soil underneath for support. [https://alleghenydesign.com/most-common-construction-question-grade-beam-or-spread-footing/] | *Spread footing - 'inverted T' actually holds the pressure on the soil. Grade beam functions like a beam - spanning 2 deep piles, not relying on soil underneath for support. [https://alleghenydesign.com/most-common-construction-question-grade-beam-or-spread-footing/] | ||
*Grade beams connect column foundations together - [https://research.engineering.ucdavis.edu/gpa/foundations-shallow/grade-beams/] | *Grade beams connect column foundations together - [https://research.engineering.ucdavis.edu/gpa/foundations-shallow/grade-beams/] | ||
*Slab foundations are used on flat lots [https://www.google.com/search?q=slab+foundation+vs+grade+beam&oq=slab+foundation+vs+grade+beam&aqs=chrome..69i57j33i160l2j33i22i29i30.6263j0j9&client=ubuntu&sourceid=chrome&ie=UTF-8]. Supported directly be ground. | |||
=Design= | =Design= | ||
*Grade beam is min 8" wide, and depth is the length of span it supports [https://www.civillead.com/grade-beam-foundation/] | *Grade beam is min 8" wide, and depth is the length of span it supports [https://www.civillead.com/grade-beam-foundation/] | ||
*Compared to typical foundation, uses less concrete. | *Compared to typical foundation, uses less concrete. | ||
Revision as of 00:21, 4 October 2022
Terms
- Grade Beam - [1]
- Spread footing - 'inverted T' actually holds the pressure on the soil. Grade beam functions like a beam - spanning 2 deep piles, not relying on soil underneath for support. [2]
- Grade beams connect column foundations together - [3]
- Slab foundations are used on flat lots [4]. Supported directly be ground.
Design
- Grade beam is min 8" wide, and depth is the length of span it supports [5]
- Compared to typical foundation, uses less concrete.