If you want an opportunity to see our highly-efficient Conco crews at their best, take a look at our time-lapse video of the 4,620 cubic yard mat pour for the 970 Denny Way project. The mixed-use redevelopment project in Seattle, Washington is being developed by the Holland Partner Group, with Holland Construction acting as the general contractor.
The 970 Denny Way mat pour took place on July 23rd and was done over approximately 15 hours. Our crew started at 2:00 am and finished around 5:00 pm. The job took 4,620 cubic yards of concrete to form the 15,300 square foot mat foundation for the new 40-story apartment/retail building. In addition to the concrete, the foundation also used 1.3 million pounds of rebar. All of the ready mixed concrete was supplied by CalPortland. Our video adeptly illustrates the kind of teamwork required to get such a large job done in a relatively short amount of time. Now that the mat pour is complete, construction on the South Lake Union neighborhood building has begun in earnest. Once it is finished, the building will feature 468 apartment units in various configurations, 15,580 square feet of retail space, and four levels of sub-grade parking. The core of the building will be constructed using 386 steel fiber-reinforced concrete coupling beams. Our website and YouTube also have a selection of other mat pours that we have completed over the last several years. One of our time-lapse videos is for an impressive 12,000 cubic yard mat pour for a new skyscraper under construction in the heart of the financial district of San Francisco. This massive pour was completed over the course of 16 hours. Along with the help of 7 concrete boom pumps, the project went off without an accident or any problems despite the challenging logistics and setting. At The Conco Companies, we are one of the leading concrete contractors in the Western U.S. and offer a wide range of quality services and products. Our experience includes providing services for commercial, educational, parking and other construction development as well as public works projects. We serve California, Washington State, Oregon, Colorado and Nevada.
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The Conco Companies are the premier commercial concrete contractors for the Western United States and offer exceptional services to clients in the Reno, Nevada area. We bring our vast experience to projects both big and small and offer the unique perspective of executing innovative, cost-effective solutions. In addition we have earned a reputation for delivering projects on time and on budget, and do so by utilizing state-of-the-art equipment and modern, technologically advanced facilities to serve our growing markets.
For each of our projects, Conco’s team of highly skilled professionals collaborates and partners with clients starting in the pre-construction phase right through to the finished product. Our portfolio includes many of the most notable and challenging projects constructed throughout the West over the last several decades. Our extensive experience includes multi-residential, educational, healthcare, parking structures, and industrial construction as well as public sector work. Furthermore, our fleet of modern, up-to-date boom pumps and equipment allow us to provide the safest, most efficient concrete pumping for even the most challenging projects. All of our concrete pump operators are ACPA certified and adhere to the highest industry safety standards. We are proud of our pumping division’s excellent safety record and work every day to make sure we keep it. Much of Conco’s success can be attributed to our willingness to advance and implement the latest concrete industry’s methodologies and techniques. We also continue to invest in state-of-the-art equipment to do the job more cost-effectively as well as to purchase equipment that helps to reduce emissions at the jobsite. In addition our entire workforce is routinely trained in the latest safety regulations and protocols. Please visit our website for contact information, and while you are there, take a look at our featured portfolio of projects for examples of the scope of Conco’s experience. The Conco Companies’ mission is to be the best supplier of concrete services in the Western United States and to bring expertise, experience and quality to each project. We continue to upgrade and expand facilities to better serve the growing market for public works projects, commercial, parking structures, educational, and other construction development. We serve California, Washington State, Oregon, Colorado and Nevada. The Portland Cement Association (PCA) states that, “Aggregates strongly influence concrete's freshly mixed and hardened properties, mixture proportions, and economy.” Furthermore, while choosing the proper aggregate in a concrete mix is important, the type of aggregate used affects the concrete more while it is wet than once it has cured.
Concrete mixes are made up of aggregate, cement, water, and sometimes chemical admixtures. The aggregate’s size or type of stone used in the mix can impact the strength, durability, workability, hardening, and ultimately the cost of the concrete. It also accounts for up to 60 to 75% of the volume and 70 to 85% of the weight. Most aggregate comes from sand, gravel or crushed stones and helps to determine the amount of cement paste added to the mix, which is the most costly part of concrete. Before the aggregate is ready to go into the concrete, it is put through a cleaning and grading process. Fine aggregate is usually defined as a mix of natural sand or crushed stones with a majority of particles smaller than 3/16th of an inch or 5mm (although sometimes it is defined as less than 4.75mm). For coarse aggregate, the crushed stones or gravel particles are usually larger than 3/16th of an inch or 5mm (or larger than 4.75mm.). Aggregate used in concrete is derived from natural sand or gravel pits, rivers, seas or lake beds, hard-rock quarries, and underground mines. If the gravel used in an aggregate is extremely rough or irregularly shaped, it will require that more water and cement be added to the concrete mix for a proper consistency. During our many decades in the industry, The Conco Companies have encountered and successfully used a variety of concrete mixes including “green” concrete. See our website to learn more about our large portfolio of projects. At Conco, we are one of the leading concrete contractors in the Western U.S. and offer a wide range of quality services and products. Our experience includes providing services for commercial, educational, parking and other construction development as well as public works projects. We serve California, Washington State, Oregon, Colorado and Nevada. Source: cement.org/cement-concrete-basics/concrete-materials/aggregate |
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