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MaytRx System Retaining Wall Installation Guide |
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| MaytRx© Landscape Retaining Walls and Tiered Retaining Walls |
| Landscape |
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When constructing a landscape retaining wall, excavate a trench approximately 16 inches wide. Follow this table for trench depth and thickness of the compactible rock or concrete foundation. For landscape retaining walls, MaytRx advises a maximum height of 3 feet. |
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Minimum
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Minimum |
| Wall Height |
Trench Depth |
Compactible Rock |
| 3' |
6" |
3" |
| 2' |
4" |
2" |
| 1' |
2" |
1" |
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| Compact and Level |
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Dig to virgin soil or compact the soil below your footing to high density. Next, compact and level your footing material. If you are building on unlevel areas you can prepare step ups or step downs in increments of the 6" thickness of the MaytRx stone. |
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| The First Course |
  Place the first layer of MaytRx stones smooth side down on the prepared foundation. Use a carpenter’s level in all directions and use a string line to verify straightness. Serpentine walls may be built too. Be certain the base course is level and stones lay flat. For micro leveling and to help the stones lay flat, keep a bag of sand handy and use small handfuls to level and stabilize the first layer. |
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| Setback Alignment |
| Set the side alignment groove directly above the backmost 3/4" set back groove of the stones in the next lower layer. This visual alignment is all that is required for each successive layer of stones. Mat material may be used to filter soil fines that may migrate into your clean granular fill. A flexible drain tube is a competent way to assure drainage from behind your wall. As successive layers are set, stagger the face seams of the stones for interlocking wall strength. Be certain to compact all rock and soil backfill to avoid saturation and wall damage. |
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| MaytRx Cap Row |
  The MaytRx Cap stone (3" thick) has two faces. The MaytRx Cap stone gives a face appearance on both sides of freestanding stone fence and barrier walls. The MaytRx cap also gives a finished look to the back side of a retaining wall that extends above grade. The MaytRx rectangular Cap stone is 11" front to back while all other stones are 10" front to back. The extra inch allows for a one inch overhang of the cap row of retaining wall or the Cap stone can be centered as shown.
Using paver grade adhesive to glue capstones to the layer below the cap layer will prevent movement of the top of any MaytRx project when the wall is bumped, walked on or leaned against. Some adhesives require the stones to be clean and dry before gluing. |
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| Splitting MaytRx A, B, & Y Stones |
| Three of the MaytRx wall stones (A, B and Y) have a front to back split groove centered on the largest face. Splitting these three stones into half stones gives 6 new sizes of stones to use in building MaytRx landscape retaining walls. |
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| Tiered Retaining Walls (The X Factor) |
| The X Factor. It is important that the upper wall does not become a load on the lower wall. Set the upper wall’s footing back a minimum of (x feet) from the top of the next lower wall. The distance should be equal to or greater than the height (x feet) of the lower wall. If the soil above your wall slopes upward you may be overloading the retaining wall and the X Factor may not apply. |
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| These type of tiered walls will require additional set back or geogrid material that should be designed by a retaining wall engineer. Tiered wall arrangements require proper loading of the retaining walls to avoid failure. |
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| Horizontal Cap Stone Installation in Wall Projects |
When building retaining walls and freestanding stone fence and barrier walls, the Cap stone can be
installed horizontally to develop a unique appearance to wall projects. These uses of the cap stone
give the 3-D effect.
The eleven inch depth of the Cap stone gives the option of the 3-D effect discussed in the section on soldiers. Horizontal placement of the Cap stone can be flush with the face of the wall or slightly extended forward for the 3-D effect. |
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| Construction of a Square Corner with MaytRx for a Retaining Wall |
The three MaytRx stones “A", “B" and “Y" can be split along a front to back center split groove that is imprinted on the top of each stone.
The “half" stones that are made by splitting any of these MaytRx stones can be used to build a square corner. Different MaytRx stones may be used in each layer to give the corner a random stone appearance or the same stone may be used to build each layer’s corner to give a repeated pattern.
Gluing the corner stones and a few adjacent stones with paver grade adhesive will make the square corner a solid unit.
For structural stability and strength it is advised that corners of retaining walls be built and glued in place with paver grade adhesive. Start the construction of landscape retaining walls that have a square corner at the corner. This allows the setback in both directions to be initiated at the corner and construction can proceed in both directions with the proper ¾" set back per layer |
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Visit the Sims Stone Landscaping Ideas Photo Gallery |
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| For more ideas regarding your next landscaping project, visit our Concrete Landscaping Projects Photo Gallery. There's even a section devoted to the MaytRx® Retaining Wall System, here. |
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MaytRx System Installation
Two of the five MaytRx stones can be used as soldiers in certain projects, the MaytRx “A" stone and the MaytRx Cap stone. The MaytRx “A" stone can be used as a soldier in landscape retaining walls only (maximum height 3’). The MaytRx “A" stone is set with the square side down when used as a soldier. This gives a solid face on the front of the retaining wall, a small open area on the back of the retaining wall will be filled with backfill rock. Use another “A" stone or a “Y" stone above the soldier to span across the top of the soldier to give a stable layer above the soldier.
The MaytRx Cap stone can be used as a soldier in landscape retaining walls. Also, the MaytRx Cap stone can be used as a soldier in stone fences, barrier walls and engineered SRW’s. The rectangular shape and specific dimensions allow the Cap stone to be used in any of these projects. Landscape retaining walls can have the MaytRx “A" and the MaytRx Cap stone as soldiers in the same wall.
