Career Opportunities for Construction Project Engineers in Portland, Oregon

conco-logo1

Due to a growing demand for services, The Conco Companies recently expanded our operations and opened a new office in Portland, OR.  As such we are looking for full-time Project Engineers to support the Superintendent and Project Manager on assigned projects.

Qualities desired for the position include being able to work well in a team and have excellent written and verbal communication skills.  Applicants must also have the ability to manage their time efficiently and be adept at organizing and prioritizing tasks.

As a Conco Project Engineer, your duties will include managing project design documents as well as handling the RFI process throughout the project including the writing, receiving, posting and distributing.  Our Project Engineers also manage the submittal process and assist in payroll related activities.  Responsibilities also involve helping to coordinate deliveries and inventories, and taking charge of all shortages and fabrication discrepancies for work that needs to be performed.

Additionally the job requires assisting with coordinating material purchases, their delivery, and tracking, and forecasting the best utilization of both man-power and materials.  On the job, you will participate in basic layout and field engineering activities and be ready to perform other duties as assigned to support the project and Conco.

We ask that applicants be proficient in Microsoft environment including MS Project, Bluebeam and Excel and be able to read architectural and structural drawings.  Applicants should be competent in current industry safety practices and technologies.

Please see our website to read the entire job posting as well as to download an application and find information on where to submit your resume.  As one of the top commercial concrete contractors in the nation, Conco offers an exciting opportunity for talented individuals who love a challenge.

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.

Advertisements
Posted in Commercial Concrete Contractors Portland | Tagged , , | Leave a comment

Our Most Important Asset – Our Employees

Conco Commercial Concrete Contractors Los Angeles

At The Conco Companies,  we firmly believe that our most important asset is our team of hard-working, dedicated employees.  We place the safety and health of our workforce above all else and are committed to providing them, along with our trade partners and customers, the safest workplace possible.

To achieve this goal, safety procedures and protocols are incorporated into all aspect of our day-to-day operations.  We also adhere to all applicable Federal and State laws and regulations as well as Labor Code and Safety Orders.  We know that it takes teamwork to create an Injury and Incident Free work environment and are committed to providing the resources and time to accomplish this.

All of Conco’s employees are empowered to refuse to do any task they believe to be unsafe or would require them to take unnecessary risks.  We also believe that safety is the responsibility of all employees starting from our top management all the way down, which is why everyone in the company is expected to take part and be engaged in our safety programs.  All of our safety programs are designed to reinforce desired behaviors while clearly spelling out the disciplinary steps taken for undesired actions and behavior regardless of what your position is in the organization.

In addition to our commitment to providing a safe work environment for our employees, we are as committed to providing our customers with premium concrete services.  Visit our website to learn more about The Conco Companies and our wide range of excellent services that include concrete pumping, reinforcement and installation, formwork, shotcrete, and construction hauling.  We also provide a great value with our design/build, General Contracting and turnkey solutions.

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.

Posted in Commercial Concrete Contractors | Tagged , , | Leave a comment

Dealing with Concrete’s Shrinkage and Cracking Problem

 

post-391

Most material, including concrete, shrinks as it dries.  The Portland Cement Association (PCA) points out that the most common amount of shrinkage is about 1/16 of an inch in a 10-foot length of concrete.  To alleviate the problem, joints are placed in concrete pavement and floors “to allow the concrete to crack in a neat, straight line at the joint, where concrete cracks due to shrinkage are expected to occur.”   Likewise expansion joints are placed in bridges, concrete walls and other structures to allow for shrinkage and to control cracking.

To help move and place concrete efficiently, concrete specialists add more water to the mix than what is strictly necessary to hydrate the cement materials.  Once the concrete is placed, the excess water begins to separate from the hardening concrete, which results in a loss of volume that causes the concrete to shrink.  As the concrete’s reinforcement or base friction works to restrain it, the tensile stresses in the slab cause the cracks.

Since shrinking is one of the inherent properties of concrete, it is impossible to totally eliminate cracking but it can be controlled.  This is the job of concrete contractors and engineers who strive to understand and address the volume change that takes place in the concrete in order to reduce the amount of shrinkage.

The PCA explains that, “The shortening of concrete slabs can be caused by temperature decreases or moisture loss. These two causes are also related to curling and warping of slabs, respectively. Curling is the deformation of the slab due to a difference in temperature between the surface and the bottom of the slab (temperature gradient).  Slab “warping” is the deformation of the slab surface profile due to a difference in moisture between the surface and bottom of the slab (moisture gradient),”

To help solve the shrinkage problem, contractors take care to use the proper concrete mix design that will require the least amount of water as well as use the largest size of aggregate appropriate to the job.  Contractors especially watch for fluctuating temperatures during the first 24 hours after the concrete is placed.

The Conco Companies are a leading supplier of concrete services for the Western U.S. and got our start in the Bay Area in 1959 by offering clients the best value on a wide range of concrete services and products.  Since that time, we have taken a leading role as one of the top concrete contractors in the region. Our offices serve California, Colorado, Oregon, Washington and Nevada.

Sources:

concretenetwork.com/concrete/concrete_cracks/preventing_concrete_cracks.htm

cement.org/cement-concrete-applications/cement-and-concrete-basics-faqs/lists/technical-information/concrete-cracking

 

Posted in building industry | Tagged , , | Leave a comment

Today’s Concrete is More Resilient

Bay Bridge Repair

Over the last several decades, technological advancements in the concrete industry have led to improvements in both the strength of concrete as well as the longevity.  In fact, experts predict that concrete mixes of today can produce concrete that will last for hundreds of years rather than just decades of concrete structures from the 20th century.  Along with the superior performance, concrete has also become “greener” to produce.

With new materials being used in the production process, changes in the mixture’s proportions, and increased recycling efforts, concrete’s environmental impact has been reduced and durability improved.  AggregateResearch.com states that, “new concretes have better corrosion resistance, equal or higher compressive and tensile strengths, higher fire resistance, and rapid curing and strength gain. In addition, the production and life cycle of these new concretes will reduce greenhouse gas emissions by as much as 90%.”

High Performance Concrete (HPC), Ultra-High Performance Concrete (UHPC), and geopolymer concrete are new types of concrete mixtures that offer several advantages over traditional concrete with few disadvantages.  For example HPC and UHPC are produced using industrial waste by-products such as fly ash, blast furnace slag, and silica fume.  The addition of these by-products reduces the amount of portland cement required in the mix, which in turn, cuts down on the amount of carbon dioxide emitted during the production of the cement.  Also there are an abundance of the by-products and are typically less expensive than portland cement.

Other advancements in the industry include producing fiber reinforced concrete, which is premixed with dry components to create higher tensile and flexural strengths than found in standard concrete.  Fiber reinforcement can be done with steel fibers, glass fibers, synthetic fibers and natural fibers and is less expensive than hand tied rebar.

The Conco Companies are a leading supplier of concrete services for the Western U.S. and got our start in the Bay Area in 1959 by offering clients the best value on a wide range of concrete services and products.  Since that time, we have taken a leading role as one of the top concrete contractors in the region. Our offices serve California, Colorado, Oregon, Washington and Nevada.

Sources:aggregateresearch.com/articles/19247/Advances-in-new-concrete-technology.aspx

Posted in building trends | Tagged , , | Leave a comment

Our Extensive Fleet of Pumps Offers Your Project Many Benefits

post 312

The Conco Companies have a long history of providing exceptional concrete services for a wide range of projects using our extensive fleet of concrete pumps and ancillary equipment.  Since 1975, we have owned and operated one of the largest concrete pumping and belting companies in the U.S., and have the capability and resources to handle the most challenging project specifications.

Our highly maneuverable concrete boom pumps provide access to areas on the jobsite that would otherwise be difficult to get including tight, confined spaces.  The long reach of Conco’s boom pumps such as our Schwing S 58 SX with a vertical reach of 187’9″and horizontal reach of175’1″, offers solutions for efficiently placing concrete on high-rises and other large-scale projects.

By using the appropriate boom pump for each job, our crews can place concrete not only faster but with more precision.  Pumped concrete requires less handling as the pump places it directly where it is needed and allows a project to be completed much more cost-effectively.  Furthermore, as placement is so accurate, it produces a more professional outcome and typically results in fewer delays.

Another time-saving aspect to using large boom pumps is the job requires fewer smaller pieces of equipment.  This saves time by eliminating the need to move the smaller machinery around the jobsite and then having to set it up again.   Pumped concrete also offers better quality control and produces a more durable and stronger finished product.

As pumped concrete requires less water, it helps prevent or mitigate shrinking and cracking problems that are common in concrete.  Lastly pumped concrete is not as affected by weather conditions as other methods that often result in work stoppages and delays.

Please visit our website to view the broad range of projects Conco has had the honor to serve as the placement specialist.  In addition to concrete pumping we also provide concrete reinforcement and installation, formwork, shotcrete, construction hauling, and design/build and G. C. services.

The Conco Companies are a leading supplier of concrete services for the Western U.S and we got our start in the Bay Area in 1959.  Our success has come from offering clients the best value on a wide range of concrete services and products and we are now one of the region’s top commercial concrete contractors.  We currently serve the areas of Southern and Northern California, Oregon, Washington Colorado, and Nevada.

Posted in Commercial Concrete Contractors Los Angeles, Concrete Pumping | Tagged , , | Leave a comment

Key Ingredient in Concrete – Portland Cement

????????????????

Portland cement is the most common type of cement and typically originates from limestone.  It is the key ingredient in concrete, mortar and stucco and used throughout the world.  When added to concrete, it is the paste that binds the aggregate (consisting of gravel and sand) with the water.

Defined as hydraulic cement (cement that not only hardens by reacting with water but also forms a water-resistant product), it is “produced by pulverizing clinkers consisting of essentially hydraulic calcium silicates, usually containing one or more of the forms of calcium sulfate as an inter ground addition.”   The concrete mix’s strength depends on the reaction of the calcium silicates with the water.

The Portland Cement Association explains that, “Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron and other ingredients.”  To produce portland cement, raw materials such as limestone, shell, or chalk are combined with clay, silica sand, shale, bauxite, fly ash, slag and iron.  This mixture is heated in huge cement kilns at temperatures as high as 2,700 degrees Fahrenheit.  A dark grey nodular about the size of a marble called a clinker is produced from the extreme heat and is ground into a fine powder to make the cement.  Once it has cooled, a small amount of gypsum may also be added to control the setting process.

Portland cement is thought to be the invention of Joseph Aspdin, a bricklayer from England, and named for its similarity to a common building stone found on the Isle of Portland in Dorset, England.  Aspdin experiments were conducted in his kitchen stove where he fired ground limestone and clay together to create the first artificial cement.  His new cement was a much stronger material than the standard unfired crushed limestone used during that period of time.

Conco’s 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.

Sources: en.wikipedia.org/wiki/Portland_cement, cement.org/cement-concrete-basics/how-cement-is-made

Posted in building industry, building trends, Commercial Concrete Contractors | Leave a comment

Scientist Search for Clues to the Formula for Roman Concrete

post 334

One of the mysteries that continue to baffle scientists and engineers is how the ancient Romans produced the strongest concrete in the world.  Typically modern concrete buildings last about 50 to 60 years while ancient Roman concrete structures have survived through 2,000 years of environmental damage.

We know that the formula used to produce the ancient concrete is unique but no one knows for sure why it is so durable, but a group of scientists thinks they may soon find some answers.  Geologists and biologists will travel to the Surtsey Island in Iceland to see if they are right.

Since ancient Roman concrete was made from volcanic ash and seawater, Surtsey is a good place for answers as the entire island is made of volcanic ash and seawater caused by an underwater volcanic eruption in 1963.  In 1979, researchers drilled a hole 181 meters (593 feet) deep into the volcanic rock in order to study the microbial life.  The hole has been monitored since it was drilled and temperatures have cooled from 140 °C to about 130 °C.

On their upcoming trip they plan to drill two more holes, one that is parallel to the original hole and another at an angle.  The new holes will be deeper that the one from 1979 and is expected to penetrate 190 meters (623 feet) down to the original ocean floor before the eruption.

The scientists plan to study the rock and mineral formation of the volcano and try to determine what makes the volcanic material so durable.  Researchers explain that Surtsey is “unique because when it formed the mixture of heat, volcanic material, and seawater created hydrothermal minerals that strengthened the rock.”  The island is much more durable than other volcanic islands as the volcanic rock is less porous and almost impervious to erosion.  The hope is that by analyzing the rock from Surtsey, it may provide clues to the volcanic ash that went into ancient Roman concrete.

The Conco Companies are a leading supplier of concrete services for the Western U.S.  We got our start in the Bay Area in 1959 by offering clients the best value on a wide range of concrete services and products.  Since that time, we have taken a leading role as one of the top concrete contractors in the region. We have four regional offices serving California, Nevada, Washington, Oregon and Colorado.

 Source:concreteconstruction.net/business/scientists-hope-this-volcanic-island-holds-the-answer-to-stronger-concrete_c

Posted in building industry, building trends, Commercial Concrete Contractors | Leave a comment