All Access Construction

Archives: December 2019

Concrete Retaining Wall using 2*12’s

You may have read our original blog on How to build a concrete retaining wall. This one will explain how to build a retaining wall part 2 using Doug Fir 2*12’s system. This system is used the majority of the time on our projects.

Think of this retaining wall like an old school basketball court back in the ’70s. Where there were only hard fouls and if you hit the concrete wall you knew you were out of bounds.

Also, the finish on this wall offers a unique wood look. Using this system also gives you time to plan the final look.

After we excavate and get our footing to the size and depth that we want. Most cases are footings are at least 3 feet wide and 18 inches thick with rebar 12 inches on center.

We start by making wood stakes and placing them approximate 4 to 5 feet on center making sure each one is plumb.

After the wood stakes are in place its time to start setting our 2*12’s. Once the back is framed up we start installing either #4 or #5 rebar 12 inches on center. This can change depending on the wall height or engineer drawings.

Once the rebar is in place we add wall ties and wedges to help hold the wall together. Then repeat the same process to close up the front. Once the front is close up it’s time for the fun part CONCRETE!!!!!

Check out our blog on the importance of concrete framing

Who is All Access?

From concrete to retaining walls, modern landscape to pavers. All Access is one of the Bay Area and Northern California’s most well–respected hardscape and landscape contractors. Contact us for your next project by making an appointment online or the old fashion way 510-701-4400

Waler Concrete Retaining Wall Forming System

How to build a retaining wall: We won’t bore you with all the technical jargon that structural engineer’s use. Just know the waler forming system is one of the many ways to form a concrete retaining wall the right way.

This slide show will walk you through the process.

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We start by drilling multiple  ¾ inch plywood  We drilled approximate 18 – 9/16 holes in ¾ inch plywood. (picture 1)

Once concrete footing is poured we snap a couple chalk lines to place our footing plates using 2*4 doug fir. This allows us to erect our plywood and prevents blow outs during the pour.. While plywood is going up its very important that the plywood is plumb and true. (Picture 2 & 3)

For walls over 6 feet and up we’ll place the plywood vertical. (Picture 4)

Once we get the back side erected. We start placing our snap ties, wedges, as well as 2*4. As you can see we use a lot of lumber during this process.

The snap ties helps hold the wall together while the wall is being pored.

snap ties for concrete pour bay area

The wedges we use are made from high carbon strength and heat treated for added strength. (Pictures 5, 6 & 7)

One of our final things we do to help better secured the wall is installed form aligner braces with the 2 *4’s. This also helps align the retaining wall. (Picture 8 )

We repeat the process for the front side.

Check out the video to how to build a retaining wall.

Here is another retaining wall we built using the waler system

Who is All Access?

From concrete to retaining walls, modern landscape to pavers. All Access is one of the Bay Area and Northern California’s most well–respected hardscape and landscape contractors. Contact us for your next project by making an appointment online or the old fashion way 510-701-4400

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