Figure 1: Book 1
Information presented on this page is intended to demonstrate the section design convergence of AS 3600-2009 provisions for isolated foundations that can be achieved with SkyCiv. All examples are taken from the following books:
Book 1: Yew-Chaye Leo, Sanual Huq Chowdhury. Reinforced and Prestressed Concrete (Second Edition), 2013.
Book 2: SJ Foster, AE Kilpatrick, RF Warner. Reinforced Concrete Basics (Second Edition) Analysis and design of reinforced concrete structures, 2013.
Example # 1 Design of axially loaded Isolated Footing.
reference: Book 2, pp.371.
DESCRIPTION
An Isolated foundation is subjected to two (2) static load cases (Dead and Live). The resulting shear, moment, load transfer and development length are compared with manual calculations. The foundation model lie in the X-Z plane.
GEOMETRY AND MATERIAL PROPERTIES
Figure 2: Footing model and material properties
LOADING
Two static loads cases are considered:
\( \text{DL} = 400.00 \text{ kips} \)
\( \text{LL} = 200.00 \text{ kips} \)
The results of service and factor load combination are in computed in reference of AS/NZS 1170 0:2002
ANALYSIS
The analysis are done in rigid conventional method.can refer this technical manual, for the technical detail explanation.
RESULT COMPARISON
The most significant results are compared in the table below:
| Results | ||
|---|---|---|
| Parameter | Manual | SkyCiv |
| qe (effective soil pressure) | 241 | 241.25 |
| key dimensions | ||
| dom | 265 | 265 |
| asup | 200 | 200 |
| 0.7asup | 140 | 140 |
| Soil Pressure | 305 | 304.69 |
| Flexural Shear | ||
| V* | 168 | 168.18 |
| Fcv | 2.9 | 2.92 |
| Punching Shear | ||
| V* | 650 | 650.3 |
| Flexure | ||
| Actual Moment | 106 | 106.18 |
Albert Pamonag
Structural Engineer, Product Development
B.S. Civil Engineering
