The American Concrete Institute (ACI) has just released a companion guide to the ACI 562-13 Code Requirements for Evaluation, Repair, and Rehabilitation of Concrete Buildings. Aimed at contractors, inspectors, owners, and manufacturers, the guide’s main goal is to provide insight into the interpretations and explain the proper use of the ACI 562 principles.
The ACI 562-13 code provides the requirements to determine whether or not a concrete building can be repaired, and, if it can be, it describes rules for determining strength, how to perform structural analysis, rules for stability and shoring, and inspection requirements.
The 16 Chapter companion guide, co-authored by the ACI and the International Concrete Repair Institute, is broken up into 2 main sections: chapter guides and project examples.
Chapter Guides
Following the same structure of the original code, the chapter guides include additional insights, flow charts. Some of the additional insights include how to select the building code for a particular repair design, how to determine compliance, additional considerations to make, and quality assurance.
Project Examples
The project examples section used real-world applications and applies the ACI 562-13 code principles to them. Among the real-world examples chosen are
- Parking garage repairs
- Façade repairs
- Repair of Historic Structure for Adaptive Reuse
- Strengthening of Two-Way Flat Slab
- Strengthening of Double-Tee Stems for Shear
The companion guide is priced at $120.50 for non ACI members and $72.00 for ACI members, which you can buy here.
[Guest post] A Review of Top Wired and Wireless Temperature and Strength Concrete Sensors
The only thing slower than watching paint dry is, well, watching concrete dry. Proper curing of concrete is extremely important, though, for quality and safety reasons. Perhaps equally important is proper testing and documentation of the concrete’s strength over time. In a move to help bolster their digital portfolio, power tool giant Hilti has acquired Concrete Sensors, an internet connected concrete testing startup.
Times are weird, guys. While there are a lot of jobsites still open, there are many that have been temporarily shut down during the coronavirus pandemic. If you need some resources for how your construction company should handle the pandemic, you can check out my resource guide by clicking or tapping here, but if you want to take your mind off of that and use some of your newly found free time, you can learn about concrete on YouTube from a college professor.
Tying rebar is an extremely repetitive and strenuous job, but it’s an essential part of most concrete roads, bridges, and buildings. Typically, rodbusters use hand tools for this work on the jobsite, but my recent visit to the World of Concrete in Las Vegas made me realize how much innovation there has been in the space in the past few years.
Over the past few years, there have been many companies offering different ways of tying rebar, which can be a very strenuous and tedious task. It’s also extremely repeatable, which makes it a strong target for innovation. MAX USA has had a rebar tying gun out for a little while now, but they just showed off a new version at the World of Concrete.
As lithium-ion battery technology continues to get better and better, we can start to expect larger tools to hit the market – and that’s been the case over the past few years. Those advancements eventually lead to opening to door for tools that the world has never even seen before, like a battery powered roller screed for concrete.
The gigantic marathon of a construction trade show, the World of Concrete, has sadly come and gone already, but the winners of the annual contest for the show’s Most Innovative Products has just been announced!
While placing concrete on the 7th floor of a new hotel in Houston, TX, 16 construction workers were suddenly sent falling to the 6th floor below, sending 9 of them to the hospital, according to local news reports.
In September of 2017, OSHA’s new standard on exposure to respirable crystalline silica went into effect in the construction industry. The rule lowered the allowable exposure to the harmful substance to 50 micrograms per cubic meter, a measurement that we’re all familiar with [/sarcasm]. After a full year of enforcement, OSHA is considering making a change to the rule.
[guest post] a in-depth comparison between laboratory and field cured concrete maturity testing