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A Single-Source Solution

For over a decade, the Mesa Retaining Wall Systems from

Tensar Earth Technologies have been the retaining wall

solution of choice for both architects and engineers alike.

One of the only segmental retaining wall (SRW) systems with

a proven, positive mechanical connection, the Mesa Systems

offer superior and cost-effective solutions for all of your

structural and landscaped retaining wall needs in the

commercial, industrial, residential and transportation markets.

With a network of licensed manufacturers throughout the

United States, Canada and Latin America, the Mesa Systems

have become the new standard in SRW technology. Designed

as a truly integrated solution, they are the only SRW system

that comes from a single source of supply and demand.

Unlike other SRWs, every component of a Mesa Wall has

been specifically designed to work together for optimum

efficiency and performance. High-strength, low-absorption

concrete units, corrosive-resistant connectors and Tensar

Geogrids all work together to forge a mechanically stabilized

earth (MSE) system that meets or exceeds every industry

standard. In fact, this optimal connection strength is

so strong and reliable that core fill* is rarely needed or

required. This translates into reduced costs and faster

installation schedules.

If you’re looking for long-term durability, increased structural

integrity and simplified construction, all at lower costs than

conventional alternatives, specify the Mesa Retaining Wall

Systems on your next project.

* Core fill is defined as the aggregate fill added to the open void space

of the Mesa Unit.

The Connection You Can Count On™ >

Only Mesa® Walls provide the dependability

engineers require, the efficient installation

contractors have come to expect and the

aesthetics owners and architects demand

in the industry today.

Tensar® Geogrids

The Mesa Retaining Wall Systems owes its

strength and durability to Uniaxial (UX)

Geogrids, Tensar Earth Technologies’ patented

reinforcement geogrids. Due to their stiff

interlocking capabilities, these geogrids stand

the test of time, performing better than other

commercially available geosynthetics. For

more information, visit www.tensarcorp.com.

Mesa Systems’ Components

Component Function

Tensar GeogridsHigh-density, polyethylene (HDPE) structural geogrids internally reinforce structure and fill materials.

Inert to chemical degradation, they can be used with non-select fill or even crushed concrete.

Mesa Segmental Units High-strength concrete block with a compressive strength that exceeds AASHTO standards (>4,000 psi).

Mesa ConnectorsUnique locking connectors are designed to mechanically connect the Tensar Geogrids to the Mesa Units.

Provide a low-strain, end-bearing connection that is not dependent on friction for structural integrity and

allow walls to be built near vertical or with a 5/8" setback.

Full Engineering and Construction Services

Detailing, design, construction services, site assistance, drawings and construction installation available

for each Mesa project upon request.

Unlimited Landscapes, Structural Solutions

Whether you’re increasing useable land or improving

property value, the Mesa Systems can solve your most

challenging grade change requirements with a full line

of SRW products. From building large structural walls to

small tiered gardens, Mesa units blend effortlessly with the

natural surroundings of any site.

Aesthetically Versatile

Whether you’re creating stairs, 90-degree corners, or convex

or concave curves, Mesa Walls can easily accommodate a

variety of design considerations. Based on your specific

aesthetic requirements, units can be variegated by color and

texture, and walls can even be built by mixing different facing

options. Designs are limitless – architects and designers are

bound only by their imaginations.

Full Line of Products >

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Standard Units – The most popular Mesa Unit in our full line of

products. The Standard Unit can be used for virtually any SRW need.

8"h x 18"w x 11"d nom./75 lbs.

XL Units – Unit has an extended “tail” that provides installers an

option for taller gravity wall installations.

8"h x 18"w x 22"d nom./110 lbs.

Ashford™ Units – Create randomly patterned, mosaic-like walls using

the Ashford Unit. Available in many different sizes for an infinite number

of facing options. Ashford Units are only available with a straight face.

Tall Unit: 16"h x 6"w x 11"d nom./60 lbs.

Medium Unit: 8"h x 12"w x 11"d nom./60 lbs.

Standard Unit: 8"h x 18"w x 11"d nom./75 lbs.

Gardener™ Units – Simple, do-it-yourself blocks that are perfect for

edgings, borders, sidewalks and other types of landscaped walls up

to 3-ft. high.

Gardener Unit: 4"h x 12"w x 8"d nom./25 lbs.

In addition to the units listed above, we also offer Mesa Cap,

Landscape and Corner Units. Manufacturing of each Mesa Unit

depends on local availability. For more information on the units

produced in your area, please call 800-TENSAR-1.

Creative Commercial and Industrial Projects >

When designing for commercial applications, the need to

combine creative looks with practical installations becomes a

necessity, all while maintaining the bottom line. That’s where

the Mesa Systems can help. By coexisting with both nature

and industry, a Mesa Wall combines creativity with

functionality, providing the ideal solution for any situation.

Endless Applications

• Commercial Developments – Retail malls, big box stores,

office complexes, etc.

• Recreational Jobs – Golf courses, amusement parks,

amphitheaters, sports facilities, etc.

• Municipal Projects – Schools, hospitals, government

buildings, public parks, libraries, etc.

• Industrial Sites – Manufacturing and waste facilities,

aggregate quarries, freight yards, mills, power plants

and much more.

Building on Codes

Local building codes are applicable to almost all retaining

walls in the commercial, industrial and even residential

markets. The importance of conforming to these codes is

increasingly imperative. If codes are not met, you risk the

chance of wall failure or fines. In fact, there is even a code

that regulates the design of SRWs that exceed four feet.

This ensures that all participants design and inspect

structural SRWs based on national standards. That’s why

we’re proud that the Mesa Systems have been positively

evaluated by the unified International Code Council (ICC)

Evaluation Service.

Standing Up to Industrial Sites

Industrial sites often have heavy loading conditions and

contain high-traffic areas. With a greater tolerance to

differential and total settlement, the superior connection

capabilities of the Mesa Systems make them the best

solution for these types of projects. In fact, Mesa Walls

can even be designed to stand up to extremely high static

loads and have been known to handle areas with the

highest seismic activities.

By coexisting with both nature and industry,

a Mesa Wall combines creativity with

functionality, providing the ideal solution

for any situation.

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Whatever your need, you can be assured that by

building a Mesa Wall you are adding property value

to your land – it’s as simple as that.

Reliable Residential Applications >

Mesa Walls provide a variety of solutions for your single-

family and multi-family home projects. Whether you need a

structural or landscaped wall, Mesa Units coexist with nature

and industry and combine creativity with functionality to

provide the ideal solutions for any residential situation.

Whatever your need, you can be assured that by building

a Mesa Wall you are adding property value to your land –

it’s as simple as that.

Power of the Positive

There’s a lot to be said for beauty and versatility in the

residential market. But you want to make sure your wall

withstands the test of time. With structural walls, it all

comes down to connection. If you compromise connection

strength, you risk wall failure. Most other SRW systems rely

on aggregate interlock or friction between the components

to hold the geogrid reinforcement in place and call it a

“connection.” The Mesa Systems’ unmatched connection

strength assures efficiency and performance. This creates

a structural wall that will last for years to come.

More than Just Landscaped Walls

Beyond structural walls, your property can be enhanced

using simple landscaped wall designs. The Mesa Systems

offer simple aesthetic considerations to blend with any home

and are easier to maintain than other types of conventional

wall alternatives. Unlike treated lumber and railroad ties,

Mesa Units will not split, rot or warp. Their high-compression

concrete resists cracking and insect infestation. This assures

a maintenance-free and environmentally friendly wall that is

sure to please any property owner.

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Tried and True Transportation Solutions >

With the Mesa Systems’ unmatched

structural mechanical connection,

you are assured connection integrity

where it is needed most – at the face.

Seldom is the connection of an SRW system tested

more than within the transportation market. Differential

settlement and traffic barriers, as well as construction and

seismic loads, can test the strength of any retaining wall.

In these scenarios, connection strength must be reliable.

With the Mesa Systems’ unmatched structural mechanical

connection, you are assured connection integrity where it

is needed most – at the face.

Exceptional Performance, Uncompromising Integrity

With superior holding capabilities, the Mesa Systems’

positive, mechanical connection makes it the ideal solution

for critical transportation applications. The systems’

connection components are unaffected by abrasion, tearing

and hydrolysis – real considerations that undermine the

performance of frictional systems using woven polyester

geogrid reinforcement. The result is exceptional performance

and uncompromised structural integrity under a variety of soil,

loading and environmental conditions.

Recognized for Its High Standards

If it’s good enough for the Highway Innovative Technology

Evaluation Center (HITEC), chances are it will work for you.

Impartial performance reviews conducted by HITEC provide

credible and comprehensive information about products and

technologies that help DOT organizations make informed

purchasing decisions. The fact that the Mesa Systems are

one of the few geosynthetic-reinforced retaining wall systems

that have been evaluated by HITEC is often a determining

factor in most transportation projects.

For a complete copy of the Mesa Systems HITEC

evaluation, please call 800-TENSAR-1 or visit

www.tensarcorp.com.

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MesaPro™ Software helps you make

sound technical decisions based on

your specific site requirements while

continuing to optimize your designs using

the Mesa Retaining Wall Systems.

Designing with MesaPro Software >

We are proud to offer engineers and architects our

MesaPro Software, the most advanced, computer-based

design software program available for the analysis of SRWs.

This unique program helps you make sound technical

decisions based on your specific site requirements while

continuing to optimize your designs using the Mesa

Retaining Wall Systems.

MesaPro Software has the flexibility to adjust design criteria

to meet project specifications. The program lets the user

work with all available types of Tensar Geogrid options

(all of which have been specifically developed for use with

the Mesa Systems). Engineers are also given such options

as choosing between Standard Mesa Units or High

Performance Mesa Units, selecting walls with or without

batter and designing for global stability.

Based on AASHTO, MesaPro Software has the flexibility to

conform to NCMA and other design requirements. It allows

you to save time when analyzing for global stability and

other unusual site and loading conditions, and it can help

you define up to five different foundation soil layers and

ground water locations. Design considerations include, but

are not limited to: bridge abutments, superimposed walls,

trapezoidal walls and back-to-back walls.

This interactive software provides you with immediate

feedback while allowing you to see your design as work

progresses. And, you have the confidence of knowing that

this program is offered by Tensar Earth Technologies, the

industry’s leader in soil reinforcement for over 20 years.

MesaPro Software can be run on Windows® 95, 98, 2000, NT

or XP platforms. It is available at a cost of $99 per program.

To order your copy, contact our customer service department

at 800-TENSAR-1.

Standard Mesa Design >

The information contained in this section is for preliminary design use only. Prior to final design, aregistered design engineer should be consulted forassistance. Tensar Earth Technologies accepts no liability for the inappropriate use of this information.

Using the Charts:The design charts on the following pages cover six

different design scenarios with a range in wall elevations

from 4 (1.2m) to 14 (4.2 m)-ft., increasing in height

incrementally by 2-ft. (600 mm). The design scenarios

alter the wall batter, backfill soil type and loading

conditions. Understanding these different scenarios

is important in selecting the proper solution for your

specific design.

• Wall Batter – The Mesa Units can be constructed at a

near vertical (±1%) or a 4.5° batter.

• Soil Types – The two backfill soil types are a sand

material (32°) and a silt or lean clay (28°). Foundation

soils are assumed to be competent.

• Loading Conditions – The three loading conditions

are a horizontal surface at the top of the wall with

no surcharge load, a horizontal surface at the top of

the wall with a uniform surcharge of 250 psf and a

3 horizontal to 1 vertical slope on top of the wall.

Once the proper design case has been identified, the chart

will present the geogrid type, length and spacing required.

All lengths listed are measured from the Mesa connection

to the last transverse bar on the Tensar Geogrid and are

uniform throughout the given elevation of the wall.

The design charts assume that the walls are constructed in accordance with the Mesa Systems standard specifications and construction guidelines. Please visitwww.tensarcorp.com or call 800-TENSAR-1 for moreinformation on Mesa Systems’ standards.

Typical Cross-Section (Near Vertical) Typical Cross-Section (5/8" Setback)

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Sand: Ø=32º; γ =120 pcf; c=0

Geogrid Length (L) Geogrid Type

Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=6'L=5' L=7' L=8' L=9'LH800 LH800 LH800 UX1100 UX1100 UX1100

Silt/Lean Clay: Ø=28º; γ =120 pcf; c=0

H=4' H=6' H=8' H=10' H=12' H=14'L=5.5' L=6.5' L=8' L=9.5' L=11' L=12'LH800 LH800 UX1100 UX1100 UX1100 UX1100

REINFORCED BACKFILL SOIL TYPE

Sand: Ø=32º; γ =120 pcf; c=0


Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4.5' L=6'L=5.5' L=7.5' L=8.5' L=10'LH800 LH800 LH800 UX1100 UX1100 UX1100


H=4' H=6' H=8' H=10' H=12' H=14'L=5.5' L=6.5' L=8' L=9.5' L=11' L=12'LH800 LH800 UX1100 UX1100 UX1100 UX1100


Sand: Ø=32º; γ =120 pcf; c=0


Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4.5' L=5'L=4' L=6' L=7' L=8'LH800 LH800 LH800 UX1100 UX1100 UX1100


H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=4.5' L=5.5' L=6.5' L=8' L=9'LH800 LH800 UX1100 UX1100 UX1100 UX1100


Mesa Design Charts >

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Sand: Ø=32º; γ =120 pcf; c=0


Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4.5' L=5'L=4' L=6' L=7' L=8'LH800 LH800 LH800 UX1100 UX1100 UX1100


H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=4.5' L=6' L=6.5' L=8' L=9'LH800 LH800 LH800 UX1100 UX1100 UX1100


Sand: Ø=32º; γ =120 pcf; c=0


Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=5'L=4.5' L=6' L=7' L=8.5'LH800 LH800 LH800 UX1100 UX1100 UX1100


H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=6' L=8' L=9.5' L=11' L=13'LH800 LH800 LH800 UX1100 UX1100 UX1100


Sand: Ø=32º; γ =120 pcf; c=0


Wall Height (H) H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=5'L=4' L=6' L=7.5' L=8.5'LH800 LH800 LH800 UX1100 UX1100 UX1100


H=4' H=6' H=8' H=10' H=12' H=14'L=4' L=6' L=7.5' L=9' L=11' L=12.5'LH800 LH800 LH800 UX1100 UX1100 UX1100


For more detailed design guidelines, please refer to the Mesa Design Guidelines Manual and/or MesaPro DesignSoftware available from Tensar Earth Technologies. To order, visit www.tensarcorp.com or call 800-TENSAR-1.

The Many Different Faces of Mesa Walls >

Endless Design & Aesthetic Options

Beyond design, if your site needs a retaining wall, why

not make it as attractive and useful as possible? In today’s

competitive and ever-changing wall market, architects and

owners are continually looking for new ways to build walls

that look as good as they work. Not only do they want a wall

that is structurally sound, they also want a wall that blends

naturally with its surrounding environment.

The Mesa Systems are at the forefront of the industry

with a wide array of design options. From blending and

variegating colors and textures to planting greenery on

tiered walls and top slopes, walls become more than a

site solution – they become an appealing landscape

feature on your site.

Mesa Ashford™ System

Recent design and architectural trends are calling for

solutions with a uniform look and a more natural and

aesthetic appeal. SRWs are no exception.

The Mesa Ashford System is meeting this market demand

with an Ashlar-inspired, mosaic-like pattern facing. Locally

available in three different block sizes and several different

colors, Ashford Units can be split-faced providing a clean

line appearance or antiqued for a weathered look. And unlike

other ashlar-inspired SRW systems, the Mesa Ashford System

features a unique positive mechanical connection assuring a

stronger facing connection to the geogrid reinforcement.

Mesa Optima™ System

While Ashlar-inspired SRW systems are naturally beautiful

to look at, their installation and cost demand more from

standard SRW technology. That’s why the Mesa Systems are

proud to introduce the most recent and innovative addition

to our product line – the Mesa Optima System. The most

dependable and aesthetically pleasing molded-faced SRW

system available on the market today, Optima Walls get their

look from digitized form liners that have been manufactured

into three different standardized choices. These include: Flag

Stone, River Rock and Ledge Stone. Using precise laser

Mesa Walls are more than

a site solution: they create a

visually appealing landscape

feature on your site.

technology to recreate natural stone facings, a three-

dimensional image is superimposed onto the face of a Mesa

Standard Unit. The result is an unmatched, visually attractive,

structural SRW solution that remains both cost-effective and

easy-to-install.

Designing for Special Considerations

Serpentine walls blend with naturally curving contours, while

inside and outside corners complement the traditionally

angular look of existing structures. With the Mesa Systems,

your design options know no bounds.

• Curves and Corners – Designing for inside, outside

and serpentine curves as well as 90° inside and outside

corners is easy as the unique locking connector

makes alignment and installation quick and simple.

• Steps – Whether you require steps in front or inside

of your wall, the Mesa Systems are up to the challenge.

By offering different units to aid in your project

requirements, virtually any design can be realized.

• Tiered and Terraced Walls – A less obtrusive

alternative than conventional wall solutions, tiered

and terraced walls can be built in areas with sufficient

land space. A typical design guideline for this type of

application is to have enough “green space” in between

walls that’s equal to twice the height of the lower wall

for each wall that is considered its own structure.

For more information on design and construction of these

or other special considerations, please refer to the Mesa

Installation and Special Considerations Manual. For local

availability on the different unit and color options in your area,

please contact your regional Mesa Systems’ representative.

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Step 1:Preconstruction Preparation

It is important to make yourself

familiar with the components of the

Mesa Systems prior to the start of

construction. Below is a list of these

components and the tools needed

to aid you in the construction of a

standard Mesa Wall.

Mesa Corner Units, drainage composite,

piping and geotextile materials may

also be required.

List of suggested tools for the installation of the system:

• Dead blow hammer

• 2-ft. – 4-ft. level

• Utility saw and/or grinder

• Masonry string and chalk line

• Pitchfork (used to help remove

slack from geogrid)

• Shovels

• Compaction equipment

Step 2:Prepare the Leveling Pad

Prepare the subgrade by excavating

vertically to plan elevation and

horizontally to design geogrid

lengths. If stockpiling excavated

material for reinforced fill, remove all

surface vegetation and debris prior to

backfill. Start the leveling pad at the

lowest elevation of the wall. Level the

prepared base with 6" of unreinforced

concrete or well-compacted granular

fill (gravel, road base or 3/4" minus

[13 – 20 mm] crushed stone). The

leveling pad is typically 12" wider

than the Mesa Unit, 6" in front and

behind the Mesa Unit. Compact the

well-graded stone to 95% Standard

Proctor or greater.

Steps in the leveling pad are required

to change elevation. It is important

that the height of the step is equal

to the height of the number of unit

courses. Aggregate leveling pads are

generally overbuilt and should be

carefully trimmed down to meet the

proper elevation. If a concrete leveling

pad is used, it is important to have the

step-up heights match the Mesa Unit’s

height exactly. If not, grinding and/or

shimming may be required.

Step 3:Install the Base Course

Once the pad is in place, begin by

making a wall line where the units will

rest. Chalk works well for concrete,

while string works well for aggregate.

Place the first course of Mesa Units

tightly together with the sides

touching and the textured face

outward. The first course must be

accurately placed to align with the

string line, carefully spaced and

leveled to facilitate construction and

enhance the appearance of the wall.

Occasionally a unit will have a slight

difference in height. If this occurs, a

geogrid rib or fingers may be used to

shim the face or tail back to level.

The following steps provide a general guide for installingthe Mesa Retaining Wall Systems. These steps will help you through standard installation procedures from start tofinish. If you are installing the Mesa Systems on a specificproject and require more detailed information, please refer

to the Mesa Installation and Special Considerations Manualor the project’s installation instructions and drawingswithin the contract bid documents. A copy can be obtainedby calling 800-TENSAR-1, visiting www.tensarcorp.comor contacting your local Mesa representative.

Standard Installation Procedures >

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Step 4:Geogrid and Connector Placement

Prior to placement of additional

courses, two Mesa Connectors are

inserted into each preceding Mesa

Unit. The flag’s (exposed portion of

the connector) orientation will create

the batter of the wall face. If the

design dictates the need for a geogrid

at a particular elevation, the Tensar

Geogrid will be installed with the Mesa

Connectors penetrating through the

geogrid apertures. Snug the geogrid

against the connector teeth, and then

drive the connector the rest of the

way using a rubber mallet. Note: The

transverse bar of the geogrid must be

pulled taut against the connectors

prior to final seating of the connector

into the block. Any slack in the geogrid

may be removed by anchoring it with

stakes or rebar.

Once the connectors and, when

required, the geogrid are in place, the

Mesa Units must be swept clean prior

to placing the next course. Failure to do

this can result in problems with seating

and leveling of the subsequent courses.

The “connected” geogrid can be

draped over the front face of the wall

while the backfill is placed up to the

geogrid elevation.

Step 5:Place and Compact Backfill

Install drainage fill, typically 3/4" well-

drained stone, behind the wall face

as directed by the design drawings

(12" min.). Peagravel should not be

used for drainage fill. Behind the

drainage fill, use backfill material that

meets project specifications. When

placing backfill over the geogrid layer,

the fill should be placed to minimize

any slack in the geogrid. Placing the fill

in a direction away from or parallel to

the face of the wall will minimize this

slack. In addition to the direction of

fill placement, a pitchfork can be used

to assist in fill over the geogrid and

remove slack.

Loose lifts of the reinforced fill shall

not exceed 6" where hand compaction

equipment is used, or 10" where heavy

compaction equipment is used. These

thicknesses may vary depending on

the approved project-specific soil types

used. Compact fill to 95% Standard

Proctor per ASTM D-698 or as required

by the contract documents. Note: Only

hand-operated compaction equipment

shall be used within 3-ft. of the tail of

the Mesa Units. Heavy equipment in

this area can dislocate the geogrids

and face units.

Step 6:Install Additional Courses

Place the next course over the Mesa

Connectors on the previous course,

fitting the flags inside the open cavity

of the block. Pull the unit forward,

so that it makes contact with the

connectors. The vertical joint alignment

should be checked frequently as the

connectors allow the units to slide

from side to side. To maintain level on

each course as you build up, continue

to check for level front to back and side

to side. If needed, shim when required.

Once the current course is level,

continue to repeat steps 4 through 6until final elevation is reached.

Step 7:Place Cap Units (when required)

Using an approved, exterior concrete

adhesive, Cap Units may be secured to

the course of units below. These units

may be placed such that a nominal

1" overhang is achieved or flush with

the face of the wall.

For additional information on

installation quality and control

procedures, please refer to the

Mesa Installation and SpecialConsiderations Manual. This document

may be obtained at 800-TENSAR-1 orwww.tensarcorp.com.

Mesa Systems’ Components:

Mesa Standard Units Mesa Cap Units Mesa Connectors Tensar Geogrids

The Mesa Systems have increasingly become the solutions of choice

for residential, commercial and transportation applications. By

combining beauty and elegance with efficiency and performance,

Mesa Walls are built to stand the test of time.

Our entire distribution team throughout the United States, Canada

and Latin America is dedicated to providing you with the highest

quality products, service and support. With more than 30 in-house

engineers, Tensar Earth Technologies strives to keep its systems at

the forefront of today’s design technology and market trends.

For more information on the Mesa System, please call 800-TENSAR-1,

visit www.tensarcorp.com or e-mail [email protected]. We are

happy to supply you with additional Mesa product information,

complete installation and design guidelines, system specifications,

design details, conceptual designs, sealed construction drawings,

preliminary cost estimates, summaries of completed projects, design

software and much more.

The Solutions of Choice >

By combining beauty and elegance with

efficiency and performance, Mesa Walls

are built to last the test of time.

18

Tensar Earth Technologies, Inc.

5883 Glenridge Drive, Suite 200

Atlanta, Georgia 30328

800-TENSAR-1

www.tensarcorp.com

AuthorizedRepresentative:

MESA_BRO_ALL_E_1.06

©2006, Tensar Earth Technologies, Inc. Certain products and/or applications described or illustrated herein are protectedunder one or more U.S. patents. Other U.S. patents are pending, and certain foreign patents and patent applications mayalso exist. Trademark rights also apply as indicated herein. Final determination of the suitability of any information ormaterial for the use contemplated, and its manner of use, is the sole responsibility of the user. Printed in the U.S.A.