Keystone Retaining Walls

Potenzo pic

Rustic charm and unmatched flexibility make Keystone Potenzo Stone™ the perfect choice for updating your outdoor living space. A multi-piece system consisting of four unique units that are finished on two sides, Potenzo Stone offers you a truly random option with its eight unique face sizes. Ranging from 10 lbs. to 30 lbs. in weight, Potenzo Stone is ideal for the do-it-yourself customer wanting to create wall designs including 90° corners, small freestanding walls, parapet walls, pilasters and columns as well as traditional retaining walls.

**Limited Availability: Check with your local Keystone representative for product availability in your area.

	unit A	unit B	unit C	unit D
height	4"	4"	4"	4"
width	11/12"	10/11"	5/6"	4/5"
depth	8"	8"	8"	8"
weight	30lbs	25lbs	15lbs	10lbs
pins	yes	yes	yes	yes

Product size, weight, color and product availability varies by location. Please contact your local manufacture for up to date product information.

Wall in vertical position

Wall in setback position

Use this guide for estimating the number of Keystone Potenzo Stone units required.
(This estimate is based on equal distribution of each size unit.)

WALL HEIGHT	WALL LENGTH (measured at wall face including curves)
WALL HEIGHT	5'	10'	15'	20'	25'	30'
4" (1 course)	8	16	24	32	40	48
8" (2 courses)	16	32	48	64	80	96
12" (3 courses)	24	48	72	96	120	144
16" (4 courses)	30	64	96	128	160	192
20" (5 courses)	40	80	120	160	200	240
24" (6 courses)	48	96	144	192	240	288


	Maximum wall height vertical position		Maximum wall height setback position

Notes:

Maximum wall height not to exceed 24".The maximum height is based on a level grade,
total granular soil,wall built in setback position, and no surcharge.Contact your local Keystone
representative for design options on wall heights exceeding 24" or supporting surcharges and
backslope.
Change in color on chart denotes maximum wall height for vertical and setback positions.
Keystone recommends cap units as the top course and/or caps of freestanding walls
secured with Keystone KapSeal™ adhesive.


STEP ONE \| Prepare the Site	STEP TWO \| Set Base Course	STEP THREE \| Pin, Stack & Fill
Start by digging a shallow trench 8" deep by 16" wide. Cut through and remove any sod, roots or large rocks. Place 4" leveling pad of compacted sand or gravel in the trench to receive the first course of Keystone Potenzo Stone.	Place and level the first Keystone Potenzo Stone unit. Level each additional unit on the base course as you place it, making sure that the outside edges touch. If your wall contains both straight and curved areas, start with a straight area and build into the curves. Complete the base course before proceeding to the second course. Note: For straight line walls, unit faces can be alternated to create a more random look.	Starting with straight areas first, begin placing the second course. Center each Keystone Potenzo Stone unit over the pins on the joints of the course below in a running bond pattern as shown. Now proceed to the next layer, backfilling as you go. For drainage between units and behind the wall, clean gravel or crushed stone is recommended.

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