How To Build A Spray-In-Place Concrete Fence - Monolithic

More documents

Recommendations

Info

This 8-foot tall, 800-foot long fence is for the annual Bethlehem Revisited program in Waxahachie, Texas. The fence encloses a half a block. It has concrete posts and wing walls to provide lateral stability. These fence/walls can be built very cost effectively. The walls are two-inches thick, except at the posts where they are three and a half inches thick. Without colorant it is a beautiful gray. 24
Appendix In the past 20+ years, we have gained significant know-how in building spray-in-place concrete fences. This Appendix adds to that knowledge. Zigzags: Experience has taught us the importance of zigzags. They make a difference in strength, versatility, expansion and contraction. Zigzags can be symmetrical, moving back and forth an extra foot on each side of the property line, every 16’. Half as many posts are needed with zigzag fence. Or they can be even more ornamental. The fence can run straight down the property line for 12’, then have a short zigzag that creates a planter box or a place for a yard bench. First do the one side and then do the other. If these are 4’ long, zig it 2’, first to one side and then to the other. You can imagine the stability this gives a fence and makes it very beautiful. Obviously neighbors need to agree on the fence, but it really creates a highlight for both properties. Basalt Reinforcing: We have learned to use basalt reinforcing. Basalt is another name for lava rock. Reinforcing made of basalt is twice as strong as steel and -- most importantly -- it won’t rust. The number one cause of concrete failure is rusting rebar. Water soaks through the concrete’s pores and eventually rusts the rebar. As the rusts grows, it explodes the concrete. Protecting the rebar is one of the concrete’s major functions. Using basalt reinforcing has made a dramatic difference in the ability to build the fence. We suggest you use the basalt fabric. We call it a fabric. It has about a one-inchsquare spacing each direction, and we can take this and put it directly into the concrete as we spray. We first spray a 1/2” to 3/4” of concrete on the fence forming. See the basalt webbing being installed. Simple, fast and permanent for flower boxes or fences. Simple zig zag fence with colorant is 1 3/4 to 2 inches thick and six feet tall. After it sets up, we spray about another 1/2”. Then we just gently push the reinforcing into that concrete. After it sets up to where it is relatively solid, we spray the next 1/2” or 3/4” of concrete to finish the fence. At this point we have many options: We can peel the form work off and spray a light touch on the backside, or we can just leave it alone and do a hand trowel on either side, but in most cases we are done. Now is the time to decide what to do about the fence color-wise. Concrete can have colorant mixed in with it. But if you have ever sprayed concrete, you know it’s super tough to make the same mix with each batch and get the same color. And the color in the concrete is less expensive and will stay that color virtually forever. We also can recommend coating the fence with something like H&C Concrete Stain. This stain seems to last forever and is gor- 25
Page 1 and 2: How To Build A Spray-In-Place Concr
Page 3 and 4: Step 1 Design the Fence Layout Wher
Page 5 and 6: Well laid-out plan for a zigzag fen
Page 7 and 8: This particular fence starts with t
Page 9 and 10: Step 2 Install Fence Posts The next
Page 11 and 12: Place the forms vertical and two to
Page 13 and 14: (Above) Drill small holes above and
Page 15 and 16: Step 5 Applying the Shotcrete The n
Page 17 and 18: tor’s experience. Concrete Streng
Page 19 and 20: To Mix or Not to Mix The shotcrete
Page 21 and 22: After the forms are removed spray a
Page 23: Final color coat sprayed is on the

How To Build A Spray-In-Place Concrete Fence - Monolithic

Create successful ePaper yourself

Delete template?

Save as template?