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On this page:
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Why doesn't
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soil
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bearing
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change
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when
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I
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edit
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slab
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reinforcement?
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ANSWER:
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Nonlinear
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must
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be
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performed
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for
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rebar
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to
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affect
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the
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stiffness
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of
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a
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model.
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This
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may
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be
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accomplished
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as
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follows:
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- Select
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- Run
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- >
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- Cracking
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- Analysis,
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- then
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- choose
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- the
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- source
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- of
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- reinforcement
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- which
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- the
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- software
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- should
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- use
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- to
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- calculate
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- cracked-section
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- properties.
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- Create load cases through Define > Load Cases, assign various load patterns, then select the Nonlinear Cracked Analysis type.
- Use these load cases to check pressures and compare against allowable limits.
- Modify the model as necessary and re-analyze until bearing stresses are acceptable.
- NOTE – If a beam is added, the effect will depend on such factors as its location and stiffness.
- NOTE – Increasing mat thickness is typically more efficient than adding reinforcement when looking to improve bearing pressure distribution.
- NOTE – If a beam is added, the effect will depend on such factors as its location and stiffness.
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Related Incidents:
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See Also
- Cracking section
How do I report the foundation soil pressures?
Extended Question: The Soil Pressures – Enveloping Summary table is organized by Panel, but these labels do not match my foundation Area Labels. How do I find which foundation corresponds with which panel? Can I print a table of the results for enveloped soil pressures per each foundation Area?
ANSWER: To identify panel location and geometry, select Tables > Results Summary > Panel Geometry. To obtain pressures based on area objects, select Tables > Nodal Results > Soil Pressures. An envelope load combination may be created to obtain results based on area objects.
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Related Incidents:
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