Learn how our Sierra System successfully completed a project in the Village Of Clagett Farm in Maryland:

1. CASESTUDY
RESIDENTIAL APPLICATION SI18
VILLAGE OF CLAGETT FARM
PRINCE GEORGE’S COUNTY, MARYLAND
Application: Installation of vegetated retention
wall to support three model homes in new
residential community while maximizing useable
area on each lot and addressing the developer’s
strong preference for a green solution to complement
the setting.
The Challenge: Despite the onset of winter, the
project was placed on an accelerated schedule
to capture consumer demand, compressing wall
construction and vegetation time. The winter season
began with an unusually high level of rainfall.
Site Conditions: High rainfall levels resulted in a
soft, wet foundation. Designers and installers
were confronted with reinforcing a cut situation.
To economize on site development costs, two
proposed structures were conjoined to create
one reinforced wall.
Alternative Solutions: Modular block and
stone-filled, wire-form baskets were considered.
The developer ultimately decided to balance
cost with a more natural and environmentally-
friendly solution.
The Solution: Crews from Annapolis-based
Hardscapes Construction, Inc. installed a Sierra
Slope Retention System in November 2006.
The 3:1 (72°) vegetated wall measures 673.5 ft in
length, topping out at 13 courses with a maximum
height of 23 feet. The wall was constructed with
ungalvanized welded wire-form baskets, reinforced
with UV-stabilized Tensar®
BX1120 Geogrid and
lined with a permanent turf reinforcement mat.
An alternate backfill material was substituted for
the specified fill when it proved to be unavailable.
A contractor’s winter seed mix was added to the
wall face and quickly vegetated in the rainy
conditions. A perennial seed mix was added in
the Spring of 2007.
PROJECT HIGHLIGHTS
Project:
Village of Clagett Farm
Location:
Upper Marlboro (Prince George’s County)
Maryland
Installation:
Fall 2006
Product/System:
Sierra®
Slope Retention System
Quantity:
6,100 square feet
Owner/Developer:
Toll Brothers, Inc.
Engineers:
Tensar International Corporation
Eastern States Engineering
Installation Contractor:
Hardscapes Constructions, Inc.
The Village of Clagett Farm in Prince George’s County, MD.
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2. CASESTUDY
SIERRA_CS_CLAGETT_12.08
Tensar International Corporation
5883 Glenridge Drive, Suite 200
Atlanta, GA 30328
800-TENSAR-1
www.tensar-international.com
For more information on the Sierra Slope Retention System or other Tensar Systems,
call 800-TENSAR-1, e-mail info@tensarcorp.com or visit www.tensar-international.com.
Distributed by:
RESIDENTIAL APPLICATION
©2008, Tensar International Corporation. Certain products and/or applications described or illustrated herein are protected under one or more U.S. patents.
Other U.S. patents are pending, and certain foreign patents and patent applications may also exist. Trademark rights also apply as indicated herein. Final
determination of the suitability of any information or material for the use contemplated, and its manner of use, is the sole responsibility of the user.
Printed in the U.S.A.
The vegetated wall readily conformed to curving
property lines, and its angle varied toward the
top of the structure. This enabled it to fit easily
within property limits and blend well with the
surroundings. A Toll Brothers representative
described the site as “challenging” and remarked
that the Sierra System installation, a first for the
company in Southern Maryland, has continued
to perform well.
The Sierra System Advantage: The Sierra Slope
Retention System provides an economic and
aesthetic alternative to conventional wall structures,
replacing them with a natural, landscaped
solution that becomes almost indistinguishable
from the native terrain. With easy installation
and no cracking, leaning, bulging or defacing,
this system is a more cost-effective alternative
than concrete retaining walls.
Specifically designed so that each component
works together for optimum performance and
aesthetic appeal, the Sierra System is a complete
and dependable solution. It includes assistance
in every phase of construction from preliminary
and landscaping design to actual installation.
The system's structural integrity has been proven
over time in a wide variety of challenging site
conditions, even in areas where seismic activities
and heavy external loads are a concern.
Additional Information and Services:
Tensar International Corporation, the leader in
geosynthetic soil reinforcement, offers a number
of integrated retaining wall and reinforced slope
systems. Our products and technologies, backed
by the most thorough quality assurance practices,
are at the forefront of the industry. Highly adaptable,
cost-effective and installation-friendly, they
provide exceptional, long-term performance
under the most demanding conditions. Our
support services include site evaluation, design
consulting and site construction assistance.
For innovative solutions to your engineering
challenges, rely on the experience, resources
and expertise that have set the industry
standard for more than two decades.
Vegetated reinforced soil slope.
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