Engineering

Restrained versus Unrestrained Members

by EVstudio AEP July 26, 2019
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In the last several months, I’ve had many questions about what constitutes a “restrained” concrete member, and what constitutes an “unrestrained” concrete member.  The volume has been such that I’ve decided to take a break from my usual post-tensioned discussions and lay this out. This […]

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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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Precompression vs. Balanced Load in Post-Tension Concrete

by EVstudio AEP July 12, 2019

My Post–Tension elevator speech is pretty well rehearsed at this point: “We drape steel cables — tendons — in the concrete forms, and then place the concrete.  Once it cures, we pull the ends of the tendons, which try to straighten out.  That does three […]

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Remodels Require a Flexible and Responsive Team

by EVstudio AEP July 12, 2019

We are doing an exciting renovation in the Conifer area that has a really unique front entry. The entrance evolved out a requirement to keep snow from piling up in front of the front entry and also blocking driveway access to the garage. After a […]

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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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Structural Wood Framing Connectors from Simpson Strong-Tie and USP

by Jim Houlette, PE May 30, 2019

Simpson or USP?  Each company has a wide range of framing connectors that meets the needs of almost every type of wood connection you can think of.  In addition, each company provides connectors for epoxy bonding, retrofitting, and other various products to create quick structural […]

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Understanding R-Value and Insulation

by evstudio May 30, 2019

This post is provided by Earthcore SIPs. There are many conditions that determine the effectiveness of any building material to provide comfort and energy efficient performance. R-Value is only one of these factors or measurement tools. R-Value is the measure of resistance to heat flow […]

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How to Repair Brick Walls that are Separating (Delamination)

by Jim Houlette, PE May 30, 2019
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In the last year I’ve been finding an increase in the number of brick wall failures.  Most of the walls are in need of repointing due to the age of the dwelling and some are in need of more significant structural repairs.  One common repair […]

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Quickly Construct Concrete Pad Footings with FASTBAG

by evstudio May 30, 2019

At a recent seminar I attended I was introduced to the Fab-Form product called FASTBAG. This product is brilliantly simple….a textile bag you can fill with concrete and reinforcing bars to take the place of the wood formwork traditionally utilized to construct pad footings. The […]

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Bentley RAM Structural Software used by EVstudio

by Jim Houlette, PE May 21, 2019

The structural department prefers to use Bentley RAM structural design software for our finite element design needs.  The total design package includes many different tools that can be used individually or together as shown above when several different materials and framing members are used.  The […]

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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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