Concrete

The Building Envelope and Energy Savings

by Samantha Coleman August 28, 2017

The building envelope consists of three main elements: the roof, the walls, and the foundation. The main concerns we have for these building elements are protecting the interior of the home from weather and other environmental issues, slowing the transmission of heat and controlling light, […]

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Reviewing Elongation Reports

by Calvin Curtis August 25, 2017
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At this point, I think it’s fair to say that I’m a proponent of post-tensioned structures.  I’ve found that they can be very economical, and there are many things you can only do with post-tensioned concrete.  However, there’s one point that I think all structural engineers […]

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The Exciting Future of Self-Healing Materials

by Nathan Laudick August 25, 2017
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No other material in the world is used in construction more than concrete, and as the developing world keeps its accelerating growth the demand will increase.  As one of the oldest construction materials in the world, there has been a lot of innovation in mixtures […]

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Twisted Steel Micro Rebar (TSMR)-The Future of Concrete Reinforcement

by Jonathan Locke August 23, 2017
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We are all familiar with the typical rebar used in concrete reinforcement applications, but many have never heard of Helix steel, or twisted steel micro rebar (TSMR). Micro rebar is roughly 1” long by .02in in diameter. Due to its patented twisted geometry, Helix greatly […]

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What is Punching Shear?

by Calvin Curtis November 30, 2016
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There are several factors that come into play when designing an elevated concrete slab.  Obviously, the ability to support the design loads comes first, followed by the allowable deflections and long-term serviceability of the slab.  However, the factor that most frequently comes up when I’m […]

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Post Tension Slab-on-Grade Foundation

by Jim Houlette June 10, 2016

A Post Tension (PT) slab-on-grade (SOG) foundation is based on a typical raft SOG foundation with one major difference; high strength steel tendons pulled into tension.  Tendons are typically ½” diameter made of 7 steel wire strands that is then greased and encased in a […]

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Pre-cast Parking Garage Solutions

by EVstudio AEP April 22, 2016
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As hot real estate markets keep the fast pace in cities across the country, the inventory of large tracts of land has increasingly dwindled.  To accommodate smaller parcels and keep pro formas intact, developers have been compelled to pack more rentable area onto ever shrinking […]

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Johnson Wax Building – Concrete and Glass Tube Technology

by EVstudio AEP February 3, 2016
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Located in Racine Wisconsin, one of Frank Lloyd Wright’s buildings that pushed concrete technologies at the time is the Johnson Wax Building.  The Johnson Wax Headquarters were built from 1936 to 1939.  The Headquarters includes the Administration Building, and Tower built from 1944-1950.  In 1976 […]

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Post-Tension Crack Control (or, Keep that Duct Tape Handy)

by Calvin Curtis November 27, 2015

Last month, I wrote a blog post about things you can’t fix with duct tape — specifically, post-tension tendon sheathing.  A couple of my readers told me that I’d strayed dangerously close to heresy — so I thought I’d write a post about something post-tensioned […]

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Construction Material – Aerated Autoclaved Concrete

by EVstudio AEP March 28, 2015

Aerated Autoclaved Concrete, or AAC is a building material that has been around since 1914, mainly in Europe, and available in the United States since the mid 1990s. It is, as the name implies, a masonry product and it consists of aggregate that is no […]

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When You Need Concrete Repair And Restoration

by evstudio December 2, 2014

If your concrete walls, walkways, floors or driveways have become stained or dirty, then concrete restoration could help you to fix these problems. Concrete restoration can make your surfaces look new again, without the hassle and expense of completely replacing the concrete. Special power cleaning […]

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Wood Embedment in Concrete

by evstudio October 4, 2014

When designing a pavilion recently I came across an interesting design question. Can you embed wood columns into concrete piers? My first search for the answer led me to the 2009 IBC. Section 2304.11.4.1 Posts or columns. Posts or columns supporting permanent structures that are […]

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