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Spread Footings Under Biaxial Bending: A Complex Design

By: Javier Encinas, PE | October 9, 2019 ASDIP FOUNDATION is a structural engineering software for footing design. It includes the design of concrete spread footings based on the latest ACI 318 provisions. This article discusses the complexities inherent to the design of spread footings when subjected to a combination of vertical and horizontal loads, and biaxial bending. For a simple spread footing with a vertical concentric compression load, the resulting bearing pressure is uniform and the shear and bending can be calculated easily by hand. If the column is at the corner of a building, then biaxial moments could [...]

By |2019-10-09T18:31:24-04:00October 9th, 2019|Categories: Foundation Design|Tags: , |2 Comments

Eccentric Combined Footing Example Using ASDIP FOUNDATION

By: Javier Encinas, PE | October 1, 2019 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 an eccentric combined footing using ASDIP FOUNDATION software. As an example, consider the combined footing shown below, which is part of the foundation of an industrial building. The left column is very close to the property line and it has a relatively light load compared to the adjacent interior column. Design the size, thickness and reinforcement of a [...]

By |2019-10-01T15:57:08-04:00October 1st, 2019|Categories: Foundation Design|Tags: , |0 Comments

Retaining Walls: Are You Calculating the Passive Pressure Correctly?

By: Javier Encinas, PE | Sept 23, 2019 Retaining walls are structures designed to bound soils between two different elevations, therefore they are mainly exposed to lateral pressures from the retained soil plus any other surcharge. In addition to the friction at the base, most retaining walls rely on the passive pressure at the front of the wall to prevent sliding problems. This article discusses the factors that may affect the calculation of the passive pressure in a retaining wall. Our software ASDIP RETAIN will be used to support the discussion. What exactly is the passive pressure? When the wall [...]

Cantilever Retaining Walls: How to Calculate the Sliding Safety Factor

By: Javier Encinas, PE | Sept 10, 2019Retaining walls are structures designed to bound soils between two different elevations, therefore they are mainly exposed to lateral pressures from the retained soil plus any other surcharge. Cantilever walls may be sensitive to sliding problems, particularly if founded on poor soils. This article discusses how to calculate the sliding safety factor in cantilever retaining walls. Our software ASDIP RETAIN will be used to support the discussion.What are the pressures acting on a retaining wall?In addition to the retained backfill, retaining walls may be subject to surcharge loads at the top of retained [...]

By |2019-09-11T08:24:58-04:00September 10th, 2019|Categories: Retaining Wall Design|Tags: , |0 Comments

Custom Load Combinations in ASDIP CONCRETE

By: Javier Encinas, PE | August 27, 2019The applied loads in a structure are usually categorized according to the nature of the loads, called load cases, such as dead, live, snow, wind, etc. These load cases are then affected by some load factors in order to be combined between them and finally get a combined load. Load combinations are a very important part in the design process. This document shows how to specify the load combinations, and particularly the user-defined custom load combinations, in ASDIP CONCRETE.How do you specify the standard load combinations?Most design standards, such as the ASCE 7, [...]

By |2019-08-28T08:02:49-04:00August 27th, 2019|Categories: Structural Concrete Design|Tags: , |0 Comments

What Systems of Units Are Available in ASDIP Software?

By: Javier Encinas, PE | August 13, 2019 ASDIP is a structural engineering software for design of building members and components. It includes the design of beams, columns, bearing walls, footings, base plates, retaining walls, etc. With this diversity of design modules in compliance with different design codes, it's important to consider the capability of the software to perform calculations using different systems of units. It's not uncommon nowadays to see a project being developed simultaneously in several countries. This document discusses in greater detail the options available in ASDIP software to work with different unit systems. What are the [...]

By |2019-08-14T08:59:26-04:00August 14th, 2019|Categories: Project Manager|Tags: , |1 Comment

CMU Wall Opening Design – New Feature in ASDIP CONCRETE

By: Javier Encinas, PE | July 30, 2019 ASDIP CONCRETE is a structural engineering software for design of concrete members. It includes the design of CMU bearing walls subject to gravity loads and out-of-plane wind pressures, based on the latest TMS 402 provisions. The design of masonry walls involves the calculation of shears and moments for the factored load combinations, and then the slenderness effects to finally design the reinforcement accordingly. But what happens if the wall is not solid, but it has door and window openings? This document shows a new feature on wall opening design, and how to [...]

Beam Support Reactions – How to Calculate Using ASDIP CONCRETE

By: Javier Encinas, PE | July 10, 2019ASDIP CONCRETE is a structural engineering software for design of concrete members. It includes the design of multi-span continuous beams based on the latest ACI 318 provisions.The design of concrete beams involves the calculation of shears and moments for the factored load combinations, and also the calculation of the beam support reactions. This document shows how to calculate the support reactions in a typical concrete beam using ASDIP CONCRETE.Are the support reactions reported graphically?The screen shot below shows a concrete continuous beam subjected to some uniform and concentrated dead and live loads. Since [...]

Beam to Girder Single Plate Connection Example Using ASDIP STEEL

By: Javier Encinas, PE | June 25, 2019ASDIP STEEL is a structural engineering software for the design of structural steel members. It includes the design of shear connections based on the AISC 360 provisions. This document is a step-by-step design example of a single-plate beam-to-girder connection.As an example, consider the partial framing plan shown below, which is part of the second floor of a retail building. All member sizes have been specified as 16" deep due to clearance limitations, which will force to cope the beams at top and bottom. Design the single plate connection of the beams to the [...]

Strap Footing Design Example Using ASDIP FOUNDATION

By: Javier Encinas, PE | June 10, 2019 ASDIP FOUNDATION is a structural engineering software for the design of concrete footings. It includes the design of strap footings, based on the ACI 318 provisions. This document is a step-by-step design example of a real-life strap footing using ASDIP FOUNDATION. As an example, consider the strap footing shown below, which is part of a steel retail building, with columns spaced in a 20 ft x 20 ft grid. One exterior column is located very close to the property limit. As a result, the column will be eccentric on the footing. Design [...]

By |2019-06-11T16:54:11-04:00June 11th, 2019|Categories: Foundation Design|Tags: , |2 Comments