Third Annual Intern Outing

On June 21, 2019, all Reeves Young interns and supervisors were invited to attend this year’s Third Annual Intern Outing at Top Golf, a driving range in Alpharetta, Ga.

Upon arrival, employees were greeted and directed through the lobby onto the second level. There, Reeves Young had reserved seven driving lanes and provided complimentary food and drinks for all who attended. The menu included everything from chicken and ribs to mac n’ cheese and biscuits. Of course, cookies were provided at the end of the buffet line too. It was delicious!

After everyone had eaten, the friendly competitions began. Some people focused on technique while others turned their attention toward the far net for distance practice and played games with the accompanied TV screen.

Technique

Although golf looks simple, there are elements of precision and timing that are often overlooked in a swing. Ultimately, the goal of every golfer is to drive distance and accuracy. But, how does one do that? Here are a few things to keep in mind before you head over to the range:

  1. Determine the best grip according to preference
  2. Widen your stance
  3. Practice good posture
  4. Turn your head in the back swing
  5. Keep your left arm straight
  6. Hold your finish
Trevor Flatter, a Preconstruction Intern, drives the golf ball off the platform at Top Golf. Play this video at full-screen. (Video/Emma Toland, EToland@reevesyoung.com)

Overall, fun was had by all, lessons were taught to those less inclined to golf, and it was a beautiful day to celebrate our interns and the relationships we have built together. Our annual Intern Outing was another success and we are already looking forward to next year!

The Science of Pouring Concrete

At 2 AM this past Monday, June 17, several Reeves Young employees and interns visited The Phoenix at Braselton site as concrete was poured for one of the parking decks. Many of you may already be familiar with the process, but it’s also okay if you aren’t because we’re about to break it down for you right here. Let’s get started:

After mixing the concrete, the team works quickly to place it into the formwork. (Photo/Lindsey Adams, LAdams@reevesyoung.com)
After mixing the concrete, the team works quickly to place it into the formwork. (Photo/Lindsey Adams, LAdams@reevesyoung.com)

The Process

#1 Design

Determining the ingredients that will make up the concrete and its proportions is the most important step in the process. However, there are several factors to consider before concrete can be poured: cement type, aggregate size and type, amount of water, and mineral and chemical admixtures.

“Concrete is composed of four main ingredients: cement, water, fine aggregate (sand), and coarse aggregate (rock). Sometimes recycled cementitious materials known as slag and fly ash are substituted for cement, causing varying effects on the concrete’s plastic and hardened properties. Admixtures can also be supplemented to the mix in order to reduce curing time, increase workability, increase strength, or to change the material properties. Varying proportions of these main ingredients are what create the many types of concrete.” – Concrete 101

In order to generate an appropriate mix design, the properties of the required concrete must be determined while also finding the most economical design. These preparations paired with the following considerations will produce a good mix design and give way to positive results:

Loads Supported:  concrete can be made with a wide variety of strengths, so this is often the starting place for the mix design.  Since the cost of concrete scales rather closely with its strength, one does not want to make the concrete stronger than it needs to be.  However, if the application will only be supporting relatively small loads, it is usually not a good idea to specify weak concrete, because weak concrete almost always lacks durability.  For low load applications the quality of the concrete is determined by other factors such as resistance to freezing or wear resistance.

Workability: the workability that is required depends primarily on how the concrete is to be placed.  Concrete can be poured, pumped, and even sprayed into place, and this will affect the workability that is needed.  Other factors such as the shape of the molds, the rebar spacing, and the equipment available at the site for consolidating the fresh concrete after it is placed must also be considered.  Workability is usually defined by the slump, which is the tendency for the fresh concrete tends to spread out under its own weight when placed onto a flat surface. 

Surface Wear: for some applications the physical loads tend to wear away the concrete instead of breaking it.  For roads, parking garages, driveways, and industrial floors the hardness and wear resistance of the top layer of concrete will determine how long the structure lasts. 

#2 Batching

Most concrete is batched and mixed in one location, commonly referred to as the ready-mix plant, before being transported to the project site. This is the best solution for most jobs because the plants have controlled conditions for storage, as well as good equipment for weighing and mixing. As a result, the concrete will usually be high and consistent.

#3 Placing

Once the concrete has been mixed, it is placed in the formwork, defining its final position and shape. Steel rebar may be used to reinforce the concrete, but it must be placed beforehand so the concrete can flow around it.

Mixers keep concrete consistent before it’s placed into the formwork. (Photo/Shutterstock)

#4 Consolidation

After the concrete has been placed, it is consolidated or compacted. In other words, large air voids developed during placement are removed and workers ensure that concrete has flowed into all of the corners and nooks of the formwork. The two most common methods of consolidation are vibration and roller compacting. Vibration is a mechanical process that transfers pulses of shear energy to the concrete, usually by a probe that is inserted several inches into the concrete.  Each pulse of shear energy momentarily liquefies the concrete, allowing it to flow very freely.  This is the standard consolidating method for general construction projects with the exception of roads. Roller compaction is a simpler and more cost-effective technique that is suitable for roads and very large mass concrete structures such as dams. 

#5 Finishing

Finishing refers to any final treatment of the concrete surface after it has been consolidated to achieve the desired properties. This can be as simple as pushing a wide blade over the fresh concrete surface to make it flat, also known as screeding, or utilizing the process of troweling.

#6 Curing

At this point, the concrete hardens and become less vulnerable over time. Therefore, action should be taken to cure it properly: (1) keep it moist and (2) keep it supported. To keep concrete young and fresh, it can be covered to prevent evaporation or sprayed periodically with water. However, pools of water should not be allowed to form on top of the cover’s surface or the concrete with degrade underneath.

It is important to keep in mind that patience and timing are key when it comes to pouring concrete. Remember to keep the formwork for as long as possible before continuing with construction. It’s also imperative to keep loads off the fresh slabs. Otherwise, the concrete will deform, which will eventually lead to cracking, among other things.

The last thing to consider while pouring concrete is the weather. Hot windy weather leads to rapid evaporation. Conversely, cold weather causes the concrete to harden much more slowly than hot weather. However, if fresh concrete freezes, it will most likely be destroyed beyond repair.

Basic Definitions

Slump: measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows. It can also be used as an indicator of an improperly mixed batch.

The higher the slump, the wetter the mix. A four-inch slump is very common with normal weight concrete and is a good for pumping. (Photo/Shutterstock)
There are three types of slumps: (1) collapse, shear, and true slump. In a collapse slump, the concrete collapses completely. In a shear slump the top portion of the concrete shears off and slips sideways. In a true slump, the concrete simply subsides, keeping more or less to shape. (Photo/Wikipedia)

Come-Along Rake: using a rake is the quickest way to begin getting the freshly-poured concrete spread more uniformly into place. Garden rakes work but concrete rakes, also called come-along rakes, have a more scooped blade for more easily pre-leveling new concrete. Concrete rakes also have a tine on the back of the blade to help lift rebar or mesh into position before the concrete begins to harden.

Moisture Retarder: used to prevent water vapor from intruding on a finished concrete slab. They are generally placed directly under on grade or below grade slabs.

Tamper: used with low slump concrete to push the aggregate below the slab surface. There are types that are used standing on the wet concrete or roller types that can be used from the slab edge.

Vibrator: helps release trapped air pockets and excess water from the concrete mix to prevent possibly compromising problems in medium to high slump concrete.

Screed: come in a variety of sizes and can be a specific tool (also called straight edges or bump cutters), or can be simple flat pieces of dimensional lumber. The purpose of a screed is to smooth concrete after it has been moved into place by scraping away any excess from the slab surface.

Trowel: helps smooth concrete surfaces for their finish coats before being left to dry. Hand-troweling is common for smaller slabs, or power trowels are often preferred for large slabs. There are varying types of trowels for specific concrete work.

Power trowels are preferred for large slabs. (Photo/Shutterstock)
After just a few hours, the concrete is consolidated and the team can finish and cure the floor to produce a solid foundation. (Photo/Lindsey Adams, LAdams@reevesyoung.com)

Sources:

http://iti.northwestern.edu/cement/monograph/Monograph2_3.html

https://www.wagnermeters.com/concrete-moisture-test/concrete-info/30-top-tools-concrete-construction-site/

https://en.wikipedia.org/wiki/Concrete_slump_test

https://centreconcrete.com/concrete101.html

Shutterstock

First Annual Bring Your Child to Work Day Luau

Reeves Young hosted our first annual Bring Your Child to Work Day Luau in the office on Friday, June 14. The day was filled with crafts, watching Moana, eating nautical nuggets, drawing chalk art, riding water slides, and more!

Our Human Resources department put their creativity to the test as they prepared for the upcoming fun. Over 30 employees brought their kiddos to work as we celebrated our families and the office we work in. Morgan Collette, Savannah Bell, and the rest of HR was able to transform the space into a tropical paradise. Everything from photo booths and painted pineapples to hula skirts and beach balls filled the space as our employees celebrated with friends and family.

The transformation of the office into a tropical paradise. Play this video at full-screen. (Video/Emma Toland, EToland@reevesyoung.com)

The HR department was not the only one to get in on the fun though! The Marketing and Business Development team transformed their space into Club Sugar Rush, a Candy Bar open all day (for kids, that is)! With little time to spare, the team was able to collaborate, compile, and create a space just for kids on the day of the luau for a sweet escape.

The Candy Bar was decked out with streamers, a disco ball, names of all the kids on the walls, a playlist that could get any kid moving, Capri Sun, candy bags, and a 24-hour loop of Fortnite dances on the TV monitor. It was a blast and a memory the kids (and marketing department) will remember for a long time!

At the end of the day, the Reeves Young Family enjoyed the warm sun as kids rode down the water slide, decorated the sidewalks with original art, and tossed a football in the field. Everyone big and small had a blast and we are already looking forward to future Bring Your Child to Work Days to come!

Kids race down the water slide after a morning of fun. Play this video at full-screen. (Video/Emma Toland, EToland@reevesyoung.com)

The Reeves Young Fleet

Whether you have heard of Reeves Young for years or are just getting started, you are sure to spot one of our vehicles driving on the highways of Metro Atlanta.

All of our equipment is company-owned and comprised of over 155 pieces of heavy machinery – the largest weighing in at 55 tons! Our fleet of white Ford F-150s sport a sleek shine and the Reeves Young logo on the front doors.

The F-150 fleet makes up 83 of our vehicles, but over 100 of our vehicles are on-road. In other words, these vehicles are not necessarily capable of driving on and off paved or gravel surfaces. However, some off-road vehicles that we utilize and do not travel on public streets or highways include forklifts, cranes, backhoes, and bulldozers. (Source: Wikipedia)

The average age of our equipment is 3.5 years, which means it’s practically new! We intend to maintain our equipment for as long as possible whether that is in the field or on the way to work!