Javier Encinas, PE

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So far Javier Encinas, PE has created 51 blog entries.

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 | April 17th, 2017|Categories: Foundation Design|Tags: , |0 Comments

How to Design Out-of-Plane Bearing Walls Using ASDIP CONCRETE

By: Javier Encinas, PE | April 10, 2017 ASDIP CONCRETE is a structural engineering software for design of concrete members. It includes the design of out-of-plane bearing walls based on the latest ACI 318 provisions. Following is a visual overview of the steps required to design this type of concrete walls using ASDIP CONCRETE. Click To Enlarge Enter the wall thickness in the Geometry tab. Specify the reinforcement size and spacing. Enter the unsupported height and condition at top. ASDIP CONCRETE generates an At-a-Glance presentation of results, organized by topic. [...]

By | April 10th, 2017|Categories: Structural Concrete Design|Tags: , |0 Comments

Shear Lug Design: Overview of the ACI Provisions

By: Javier Encinas, PE | April 4, 2017 Shear lugs are steel elements welded to the underside of base plates to resist shear loads. The design of shear lugs is covered by the ACI 349 anchorage provisions. This post is an overview of the structural design process. Our software ASDIP STEEL will be used to support our discussion. How do you calculate the shear force in a shear lug? The lateral forces acting on a structure will produce a horizontal reaction at the foundation level. For steel frames supported on base plates, a small horizontal force can be resisted by the [...]

By | April 4th, 2017|Categories: Anchor Rods, Foundation Design|Tags: |0 Comments

Steel / Composite Beams: Optimizing the Design with ASDIP STEEL

By: Javier Encinas, PE | March 27, 2017 Beams are structural elements that support loads applied transversely, which produce a combination of shear and bending stresses. The structural design of steel beams includes the check of multiple limit states for both shear and bending. For composite beams, it’s important to consider the loads that will be applied before and after the composite action takes place. In the pre-composite stage, the flexural behavior of a steel beam is a function of the unbraced length Lb for the limit state of lateral-torsional buckling. In a composite beam, shear connectors are usually provided to transfer [...]

By | March 27th, 2017|Categories: Structural Steel Design|Tags: , |0 Comments

Cantilever Retaining Walls: How to Calculate the Sliding Safety Factor

By: Javier Encinas, PE | March 13, 2017 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. Cantilever walls may be sensitive to sliding problems, particularly if founded on poor soils. This article discusses the sliding calculations in either concrete or masonry 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 [...]

By | March 13th, 2017|Categories: Retaining Wall Design|Tags: |0 Comments

How to Design Shear Connections Using ASDIP STEEL

By: Javier Encinas, PE | February 13, 2017 ASDIP STEEL is a structural engineering software for design of steel members and connections. ASDIP STEEL software includes the design of shear connections based on the AISC 360 provisions. Following is a graphical overview of the required design steps, with annotated screenshots of the software. Click To Enlarge Select the connection type: single or double angle, single plate, or tee. Support can be either column flange or web, and beam web. Select support and beam sections from the AISC built-in database. If beam is [...]

By | February 13th, 2017|Categories: Structural Steel Design|Tags: |0 Comments

Structural Steel Design: ASDIP STEEL (Version 4) Release

By: Javier Encinas, PE | January 31, 2017 ASDIP Structural Software announces the release of the new version of ASDIP STEEL (Version 4) engineering software. Design professionals utilize ASDIP STEEL software for the design of steel members and connections. Following are some of the most important features included in this version 4. What modules are included in ASDIP STEEL 4? This new version includes the following 4 modules: Base plate / Anchorage - Design of column base plates, anchor rods, and shear lugs. Now it includes ACI / AISC Seismic Provisions. Steel column - Design of biaxial sway or [...]

By | January 31st, 2017|Categories: Structural Steel Design|Tags: |0 Comments

Shear Connections: Overview of the Design Process

By: Javier Encinas, PE | January 24, 2017 Shear connections are typically used to connect beams to other beams or columns. Such connections transfer shear, with minimum rotational restraint, as opposed to moment connections. This article is an overview of the AISC provisions for the design of shear connections. Our software ASDIP STEEL will be used to support the discussion. What are the components of a shear connection? A typical shear connection is composed of three parts: support, connector, and beam. The support may be another beam or girder, a column flange, or a column web. The connector may [...]

By | January 24th, 2017|Categories: Structural Steel Design|Tags: , , |0 Comments

Cantilever Retaining Walls: How to Calculate the Overturning Safety Factor

By: Javier Encinas, PE | January 15, 2017 A retaining wall is a structure exposed to lateral pressures from the retained soil plus any other surcharges and external loads. All overall stability failure modes must be thoroughly checked, but cantilever walls may be particularly sensitive to overturning problems. This article discusses the overturning calculations in either concrete or masonry cantilever retaining walls. Our software ASDIP RETAIN will be used to support the discussion. A typical retaining wall is composed of four main components: the Stem, the Toe at the front of the wall, the Heel at the backfill side, and [...]

Anchor Rod Design: Overview of the ACI Seismic Provisions

By: Javier Encinas, PE | January 9, 2017 The seismic design of anchor rods is included in the ACI 318 code, originally in the Appendix D of the ACI 318-11 and earlier, and now in the Chapter 17 of the ACI 318-14. This document is an overview of the ACI 318 seismic provisions that affect the design of anchor rods. The anchor rods are usually subjected to a combination of tension and shear forces. The ACI treats separately tension and shear, and then it combines both effects in an interaction diagram. The seismic provisions apply to anchors in structures assigned to [...]

By | January 9th, 2017|Categories: Anchor Rods|Tags: , |0 Comments