Foundation Design

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How to Design Uplift Footings Using ASDIP FOUNDATION

By: Javier Encinas, PE | January 31, 2019ASDIP FOUNDATION is a structural engineering software for the design of concrete footings. It includes the design of uplift footings, based on the ACI 318 provisions. This document covers the design of footings subject to uplift loading using ASDIP FOUNDATION.Uplift loads may be applied to a footing for a number of reasons, but the most common uplift loads are due to wind. For example a light warehouse building in a hurricane zone can be exposed to this kind of uplift loading. In such cases, the gravity forces due to footing selfweight, pedestal and [...]

By |2019-02-09T19:19:43+00:00January 31st, 2019|Categories: Foundation Design|Tags: , |2 Comments

Combined Footing Real-Life Example Using ASDIP FOUNDATION

By: Javier Encinas, PE | November 13, 2018 ASDIP FOUNDATION is a structural engineering software for the design of concrete footings. It includes the design of combined footings, based on the ACI 318 provisions. This document is a step-by-step design example of a real-life combined footing using ASDIP FOUNDATION. As an example, consider the combined footing shown below, which is part of the foundation of a pipe rack in an industrial plant. A typical bent consists of two steel columns closely spaced that share the same footing. The pipe rack is exposed to dead, live, and wind loads, whose reactions [...]

By |2019-02-09T19:19:44+00:00November 14th, 2018|Categories: Foundation Design|Tags: , |2 Comments

Spread Footing Real-Life Example Using ASDIP FOUNDATION

By: Javier Encinas, PE | October 15, 2018 ASDIP FOUNDATION is a structural engineering software for the design of concrete footings. It includes the design of biaxial spread footings, based on the ACI 318 provisions. This document is a step-by-step design example of a real-life spread footing using ASDIP FOUNDATION. As an example, consider the spread footing shown below, which is part of a building expansion. The new footing is adjacent to an existing footing, and the dimensions are also affected by the proximity of the property limit. As a result, the column will be eccentric in both directions. Design [...]

By |2019-02-20T11:09:00+00:00October 16th, 2018|Categories: Foundation Design|Tags: , |0 Comments

Footing Design: How to Check the Shear Capacity per ACI 318

By: Javier Encinas, PE | August 14, 2017 The foundation is that part of the structure that transfers the loads to the supporting soil in such a way that the resulting bearing pressures are kept under acceptable limits. If the underlying soil is satisfactory, then a spread footing is usually the recommended solution by the soils engineer. In addition to the stability checks and the design for flexure, a spread footing needs to be designed for shear. This blog post discusses the shear checks required by ACI 318. Our software ASDIP FOUNDATION will be used to support our discussion. [...]

By |2019-02-20T12:04:11+00:00August 14th, 2017|Categories: Foundation Design|Tags: , |0 Comments

How to Design Spread Footings Using ASDIP FOUNDATION

By: Javier Encinas, PE | July 12, 2017 ASDIP FOUNDATION is a structural engineering software for design of concrete footings. It includes the design of spread footings based on the latest ACI provisions. Following is a graphical overview of the required design steps, with annotated screenshots of the software. Click To Enlarge Enter the footing dimensions in plan and elevation view. Specify the soil cover and the water table depth. Click on the Column tab and specify the column dimensions. The column can be offset in both directions. If column is a short pedestal, [...]

By |2019-02-20T12:11:32+00:00July 12th, 2017|Categories: Foundation Design|Tags: , |4 Comments

Combined Footings: How to Calculate the Bearing Pressures

By: Javier Encinas, PE | June 27, 2017 ASDIP FOUNDATION includes the design of concrete combined footings. This structural engineering software is based on the latest ACI 318 provisions. This post explains the calculation of the soil bearing pressures in a typical combined footing. A combined footing usually supports two columns. The use of a combined footing may be justifiable under conditions where the distance between columns is short, so a large excavation is not required. There are two common scenarios in practice: A property line exists at or near the edge of an exterior column, so a normal isolated footing [...]

By |2019-02-20T12:15:39+00:00June 27th, 2017|Categories: Foundation Design|Tags: , |0 Comments

Anchor Rods: How to Calculate the Tension Breakout Capacity

By: Javier Encinas, PE | June 14, 2017 Anchor rods are elements designed to resist mostly tension forces, sometimes in combination with shear. Out of all the tension limit states required by ACI 318, concrete breakout is particularly important because a concrete failure would be non-ductile, and therefore it should be avoided. This blog post discusses how to calculate the breakout capacity of anchor rods. I will use our software ASDIP STEEL to support the discussion. Concrete breakout assumes a failure forming a concrete cone based on a prism angle of 35 degrees. This method predicts [...]

How to Use the Pre-combined Load Feature in ASDIP Software

By: Javier Encinas, PE | May 16, 2017 ASDIP is a structural engineering software for the design of structural members based on the ASCE 7 load combinations. But what about if you don't want your loads to be internally combined? This blog post discusses this important feature in ASDIP software. Structural engineering is all about calculations with loads, which are classified in different types, called Load Cases, such as Dead, Live, Snow, Wind, Seismic, etc. Typically the calculation results are generated and stored individually per each load case. These load case results are then affected by load factors in order [...]

How to Design a Fence Wall Using ASDIP RETAIN

By: Javier Encinas, PE | May 2, 2017 ASDIP RETAIN is a structural engineering software to design retaining walls. However, the software is so flexible that it can also be used to design a masonry fence wall exposed to wind. This article shows the steps required to design a fence wall using ASDIP RETAIN. Click To Enlarge As an example, let's design a typical fence 7'-0" high exposed to a wind load of 20 psf. The first obvious step in the software is to set the backfill height to match the soil cover at [...]

By |2019-02-09T19:19:58+00:00May 2nd, 2017|Categories: Foundation Design, Retaining Wall Design|Tags: |0 Comments

Strap Footings: How to Calculate the Bearing Pressures

By: Javier Encinas, PE | April 16, 2017 ASDIP FOUNDATION includes the design of concrete strap footings. This structural engineering software is based on the latest ACI 318 provisions. This post explains the calculation of the soil bearing pressures in a typical strap footing. A strap footing usually supports two columns, so it's a special type of combined footing. If a property line exists at or near the edge of an exterior column, a normal isolated footing would be placed eccentrically under this column and it would tend to tilt. This problem may be prevented by connecting this footing with [...]

By |2019-02-09T19:19:59+00:00April 17th, 2017|Categories: Foundation Design|Tags: , |0 Comments