engineer

Interrupted or Narrow Spread Footing Foundation

by Jim Houlette, PE July 26, 2019

When the site has low to moderate swelling soil an interrupted or narrow spread footing may be used.  The Geotechnical engineer will specify a maximum and a minimum soil bearing pressure.  Most people understand a maximum soil bearing which is discussed more at our post […]

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Raft Slab-on-Grade Foundation

by Jim Houlette, PE July 12, 2019

A Raft Slab-on-Grade foundation can be as simple as a 4” thick slab with no reinforcement and a shallow perimeter rib to an 8” thick slab heavily reinforced with deep ribs spaced roughly 10’o.c.  The wide range of concrete thicknesses and reinforcement is a function […]

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Understanding Long-Term Losses in Post-Tension Tendons

by EVstudio AEP July 11, 2019

As a structural designer, I started my career working on post-tension structures.  Those of you who have been with us for some time know that those can include things as small as a single tennis or basketball court as well as some of the tallest […]

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Wind or Fallen Tree Damage Report by a Structural Engineer

by Sean O'Hara, AIA, LEED AP May 30, 2019

Unfortunately, we are experiencing some high winds as the year ends.  Although structures built in the last 20 years should have been designed to withstand a 90mph wind gust or higher in some areas along the front range it doesn’t protect the structures from falling […]

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Progress Update on Modern Home in the Mountains

by EVstudio AEP May 21, 2019
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One of the greatest parts of being an architect or engineer is seeing a building come out of the ground. I recently toured a modern home project of ours which is under construction. This view is from the southwest corner of the home. The main […]

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Wall on Grade Foundation

by Jim Houlette, PE April 19, 2019

Simple and cost effective, but limited in design capabilities.  A wall on grade is just as simple as it sounds.  If the bearing capacity of the soil is moderate to high and the load from the structure is light then a typical spread footing can […]

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Steel Screw Pile Foundation

by Jim Houlette, PE March 29, 2019

A deep foundation system that is gaining popularity in areas with difficult soil, contaminated soil and due to its speed of construction is steel screw piles. At first glance screw piles look like the typical helical pier.  However, there are significant differences that make a […]

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Interpreting Truss Shop Drawing Dimensions

by evstudio November 16, 2018
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Spend any time as a structural engineer that deals with residential structures and you will no doubt be asked to review pre-engineered truss shop drawings.  For a young engineer this may be a daunting task from the look of the cut sheets (shown below). One […]

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Denver Engineers Not Surprised by New Post-Tension Rule

by EVstudio AEP November 6, 2018
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Good day!  Your usual post–tension maniac here, with more exciting information on post-tensioning! A few months ago, I mentioned that finishing post-tension tendons was an area of special concern, since corrosion is very much the arch-enemy of post-tension tendons.  There are actually a lot of […]

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Agreements, Proposals and Contracts Used by Architects, Engineers and Contractors

by Sean O'Hara, AIA, LEED AP November 6, 2018

There are no shortage of different forms for agreements, proposals and contracts in the design and construction industry. The base contracts of the design and construction industry are the contracts produced by the American Institute of Architects. These contracts have been in place for more […]

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Post-Tension Elongations: How Long is Too Long?

by EVstudio AEP September 29, 2018
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Recently, we’ve had a few projects where our post-tension elongations came up longer than expected.  As you’ll recall from my post earlier this year, elongation review is a critical part of an engineer’s acceptance of a post-tension slab.  However, I mostly concentrated on short pulls […]

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Have Your Architect Hire the Engineers

by Sean O'Hara, AIA, LEED AP September 28, 2018

In the traditional architectural project the client will hire the architect and in turn the architect will bring on any consultants and engineers that are necessary to deliver the project. Recently, I’ve seen a number of clients who prefer to hire all of the consultants […]

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