BELGARD.COM. Tandem Wall Segmental Retaining Wall System BELGARD.COM 1

BELGARD.COM Tandem Wall Segmental Retaining Wall System BELGARD.COM 1

2 For more information visit Belgard.com

Table of Contents Tandem Wall System...4 Features & Benefits...5 Installation Instructions...6 Design Details...9 Geogrid Estimating Charts...22 BELGARD.COM 3

Tandem Wall System Tandem Wall System designed by Belgard provides the natural appearance of chiseled stone that will complement any hardscape. The innovative, versatile system can be used to create attractive, curved or straight retaining and freestanding landscape walls. Great for use in a wide range of residential and light commercial hardscape projects. Visit Belgard.com for more details TANDEM WALL SYSTEM COMPONENTS DIMENSIONS Dovetail connection Small Unit Textured & Ashlar Approx. Dimensions 7 H x 13 3 16 W x 2 5 8 D Approx. Weight* 18 lbs. Coverage Medium Unit.64 sq. ft. Textured & Ashlar Textured unit Ashlar unit Approx. Dimensions 7 H x 15 7 8 W x 2 5 8 D Approx. Weight* 22 lbs. Coverage.77 sq. ft. Large Unit Textured & Ashlar Approx. Dimensions Approx. Weight* 7 H x 18 1 2 W x 2 5 8 D 25 lbs. Tandem Cap Coverage Tandem Cap.90 sq. ft. Textured CONNECTING MEMBERS Approx. Dimensions 3 1 4 H x 24 W x 15 D Approx. Weight* 91 lbs. Coverage 0.54 sq. ft. CONNECTING MEMBER PRODUCT DATA 6 7 /8 7 ASTM Standards Physical Property Specific Gravity Melt Mass Flow Rate Test Method ASTM D 792 ASTM D 1238 Value Units.930 G/CC 20 g/10 min CONNECTOR 13 3 /16 13 3/16" 7 7 /8 8-1/8 Mechanical Tensile Strength ASTM D 638 3,800 psi BACK VENEER Tensile Elongation ASTM D 638 5.0 % Impact Flexural Modulus Notched Izod Impact ASTM D 790 ASTM D 256 175,000 psi 2.0 ft.-lb./in. 7 1/16" 7 Thermal Deflection Temperature Under Load ASTM D 648 175 ºF FRONT VENEER 12 1'-0" * Weight may vary. Please check with your local Belgard representative for exact product specifications. Above values may change with materials. 4 For more information visit Belgard.com

Features & Benefits BENEFITS BY THE NUMBERS: Minimum outside radius of 6 Free Standing walls up to 28 Exceeds 5,000 PSI compressive strength concrete Engineered 90 corners Gravity walls up to 3 feet Reinforced walls up to 8 feet Panel sizes: 7 x 13 3 /16 x 2 5 /8-18 lbs./panel 7 x 15 7 /8 x 2 5 /8-22 lbs./panel 7 x 18 1 /2 x 2 5 /8-25 lbs./panel BENEFITS OF BELGARD TANDEM WALL: Meets the material requirements of ASTM C-1372 Classic look of natural stone 24 different facial textures Build curved or straight walls Free Standing Three color blends Patent Pending CONNECTING MEMBERS BELGARD S CONNECTOR DESIGN CREATES STRUCTURAL INTEGRITY IN CURVED OR STRAIGHT WALLS. 6 7 /8 Gravity wall height up to 3 feet without surcharge and reinforced walls up to 8' 2.6 connectors per sq. ft. of wall Polypropylene Copolymer 2 connectors per unit 3 bags of connectors for every pallet of panels 7 7 /8 BELGARD.COM 5

Installation Instructions STEP 1: Remove all surface vegetation and debris. Select the length of the wall and excavate a trench the length of the wall and approximately 12 from top of final grade. Then place a dense graded aggregate and compact to 95% standard density or modified. It's not recommended to use a pea rock or a rounded type of material on the base. STEP 2: Place the U Start Base Block on the compacted gravel. Level the U Start units front to back as well as side to side. Making sure the units are fully level. STEP 3: Assemble the Tandem Wall units by inserting the Tandem Wall connectors into the dove tails. Make sure the front and rear panels are the same length. STEP 4: Place the assembled Tandem Wall unit on the top of the U Start Base Block, making sure that the first course is centered on the base block. Check to make sure units are kept level. 6 For more information visit Belgard.com

Scan to watch Installation Video STEP 5: Once the Tandem Wall units have been placed. Run a string line along the back of the front or rear panel to assure you are keeping the wall units straight in line. STEP 6: Place 3/4 crushed rock in between the panels to provide frictional connection and proper internal drainage. STEP 7: Lightly hand compact the gravel in between the panels for proper compaction. STEP 8: Place 12 of 3/4 drainage rock behind the rear panel of the wall. This will provide for proper drainage behind retaining walls. BELGARD.COM 7

Installation Instructions STEP 9: Set additional courses of the Tandem Wall. Making sure that you are keeping the wall in proper alignment. Backfill and compact each additional course. STEP 10: When placing the cap on top of Tandem Wall, use a construction adhesive to secure the cap to the top of the wall. STEP 11: Finished Project. 8 For more information visit Belgard.com

Design Details 8 7 6 5 4 3 2 1 SEGMENTAL RETAINING WALL: TANDEM WALL SEGMENTAL RETAINING WALL GUIDE: 1. The base shall be made of U Start Base Blocks. 2. Center Tandem panel units on starter units. 3. The base foundation shall be approved by the site geotechnical engineer prior to placement of the starter units. 4. Backfill is typically on site soil unless otherwise shown on the plans. D 1-The base shall be made of starter units 2-Center Tandem veneer units on starter units. 3-The base foundation shall be approved by the site geotechnical engineer prior to placement of the starter units. 4-Backfill is typically on site soil unless otherwise shown on the plans. CONNECTOR 2 REQUIRED PER PANEL INFILL MATERIAL #57 STONE TYPICAL WALL ASSEMBLY UNIT FRONT PANEL CUT PANEL INSIDE CROSS CONNECTORS 2 REQUIRED PER PANEL TURNED UPSIDE DOWN D C C CUT PANEL CUT PANEL CORNER PANEL UNIT CONNECTOR 2 REQUIRED PER PANEL TYPICAL RETAINING WALL WITH 0.5 SET-BACK & 90 DEGREE CORNER BACKFILL MATERIAL MINIMUM 12 IN. OF # 57 STONES DRAIN PIPE B TYPICAL WALL BASE PAD ISOMETRIC VIEW STARTER UNITS INFILL MATERIAL #57 STONE B BASE FOUNDATION MINIMUM RADIUS OF 6 FEET (CONCAVE & CONVEX) CONNECTOR 13 3/16" CONNECTOR 1 / " TYPICAL CURVED RETAINING WALL WITH SETBACK 7" 7" 1 / " 1'-0" 18 / " 1'-0" A TYPICAL SMALL RADIUS ASSEMBLY WEIGHT: 41 lbs TYPICAL LARGE RADIUS ASSEMBLY WEIGHT: 48 lbs A TYPICAL CURVED FREE STANDING WALL BASE SUBASSEMBLY UNITS PAGE 2 8 TANDEM WALL SEGMENTAL RETAINING WALL SECTION VIEWS: 1. Base material shall be constructed of crushed stone. Center Tandem units on leveling pad or U Start Base Blocks or 2,000psi unreinforced lean concrete leveling pad. 2. The base foundation shall be approved by the geotechnical engineer prior to placement of the leveling pad. 3. Upper level of wall units not showing infill material in order to show connectors. 4. Backfill is typically onsite soil unless otherwise shown on the plans. 5. 4 degree batter (0.5" setback per course). 7 6 5 4 3 1. The drainage system shall consist of a 4 diameter perforated pvc pipe wrapped with a geotextile fabric. 2. Provide rodent screen in 4 diameter non-perforated pipe daylighting through wall. 3. See contract plans for additional requirements and details. 2 1 INFI LL # 57 STONES 12 in. minimum BACKFILL MATERIAL # 57 STONES TOP SOIL TANDEM CAP 12" MIN. BACK PANEL BACKFILL MATERIAL #57 STONES TOP SOIL UNDISTURBED SOIL TANDEM CAP TANDEM FRONT PANEL FRONT PANEL A STARTER UNITS GEOTEXTILE FABRIC (optional) BASE FOUNDATION DRAI N PI PE UNDISTURBED SOIL A PERFORATED DRAIN PI PE 6 in. minimum 4 IN. SOLI D DRAI N PI PE 6 in. minimum TYPI CAL CROSS SECTION 6 in. minimum STARTER UNITS BASE FOUNDATION 6 in. minimum GEOGRID 4" DIAMETER TEE FI TTING BACK PANEL OF TANDEM WALL 4" DIAMETER PERFORATED PIPE GEOTEXTILE FABRIC (optional).5 in. Setback per course GEOGRID 6 in. minimum 6 in. minimum CONNECTOR 2 REQUIRED PER PANEL TYPI CAL SECTION WITH GEOGRID FRONT PANEL OF TANDEM WALL 4" SOLI D PI PE WITH RODENT SCREEN FI ELD CUT FRONT OPENING FOR OUTLET DRAI N PI PE TYPICAL DRAINAGE OUTLET THROUGH WALL FACE DETAIL DETAIL C SCALE 1 / 4 BELGARD.COM 9

Design Details (CONTINUED) TANDEM WALL SEGMENTAL RETAINING WALL TYPICAL DETAIL VIEWS: TYPI CAL WALL ASSEMBLY UNITS TANDEM CAP INFILL MATERIAL #57 STONE GROUND LEVEL WITH SLOPE INSI DE CUT FACE UNIT TO SUPPORT CORNER FACE CONNECTORS 2 PER PANEL 6 IN. MIN. TYPI CAL WALL ASSEMBLY UNIT U START BASE BLOCKS TYPI CAL TOP OF WALL STEPS FRONT PANEL LOW PERMEABLE SOIL STANDARD FACE WITH FI NISHED END TYPI CAL ELEVATION WALL WITH SLOPE U START BASE BLOCKS 6.00 MIN. CUT VENEER UNIT TO MAKE CORNER FACE Geotextile fabric shall be placed where the retaining wall abut to existing foundations as shown on the retaining wall site plans. Overlap all abutment joints 12 with minimum 24 fabric. GEOTEXTILE FABRIC 12" MINIMUM 12" MINIMUM CONNECTOR TANDEM WALL STEP DETAIL VIEWS: D 1. The base shall be made of starting blocks 2. Center Tandem face units on starting units. 3. The base foundation shall be approved by the site geotechnical engineer prior to placement of the starting blocks. 8 7 6 4. Backfill is typically on site soil unless otherwise shown on the plans. STEP DETAIL VIEWS: 1-The base shall be made of starting blocks 2-Center Tandem face units on starting units. 3-The base foundation shall be approved by the site geotechnical engineer prior to placement of the starting blocks. 4-Backfill is typically on site soil unless otherwise shown on the plans. PAVER OR SLAB 5 4 3 PAVER OR SLAB TYPI CAL ABUTMENT DETAIL 2 EXISTING FOUNDATION 1 D TANDEM CAP TANDEM CAP C SOIL C TANDEM BACK PANEL U START BASE BLOCKS BASE FOUNDATION U START BASE BLOCKS TANDEM BACK PANEL TANDEM CAP BASE FOUNDATION INFILL MATERIAL # 57 STONE TANDEM BACK PANEL PAVER OR SLAB TANDEM FRONT PANEL PAVER OR SLAB B TANDEM CAP 1-3/8 1-3/8 B TANDEM FRONT PANEL INFILL MATERIAL # 57 STONES 15 IN. 36 IN. MAX. SOIL 7 IN. 15 IN. TANDEM BACK PANEL SOIL 6 MIN. 7 IN. STARTER UNIT 6 MIN. 6 IN. MINIMUM A 6 IN. MINIMUM U START BASE BLOCKS 6 IN. MINIMUM INFILL MATERIAL # 57 STONE 6 MINIMUM A U START BASE BLOCKS 8 7 10 For more information visit Belgard.com 6 5 4 3 2 1 PAGE 5

Design Details (CONTINUED) TANDEM WALL STEPS & CORNERS: STEPS & CORNERS STEPS FRONT PANEL BACK PANEL CONNECTOR G G J J TOP VIEW OF STEPS INTEGRATED INTO WALL H H CORNER DETAIL CONNECTORS IN CORNERS AND ENDS OF WALL MUST BE FLIPPED TO AVOID INTERFERENCE USE A STONE WITH ONE LENGTH LONGER THAN FRONT PANEL CUT VENNER AT 6 ½ TOP VIEW OF STEPS INTEGRATED INTO WALL USE A STONE WITH ONE LENGTH LONGER THAN FRONT PANEL BACK PANELCUT TO MATCH WITH FRONT PANELS DOVETAIL FRONT PANEL DETAIL G TYPICAL STEP INTEGRATION WALL INTO WALL BELGARD.COM 11

Design Details TANDEM WALL FREE STANDING WALLS: 1. The base foundation shall be constructed of crushed stone or 2,000 psi unreinforced concrete or U Start Base Blocks. 2. Center Tandem panel units on starter units. 3. The base foundation shall be approved by the site geotechnical engineer prior to placement of the leveling pad. TANDEM COPING AL ER UNITS DATION MINIMUM RADIUS OF 6 FEET (CONCVE & CONVEX) TYPICAL FREE STANDING CURVED WALL BASE PAD ISOMETRIC VIEW TO MAKE CURVES SEE SUBASSEMBLY DETAILS IN PAGE 2 UNDER TYPICAL CURVED FREE STANDING WALL BASE SUBASSEMBLY UNITS INFILL MATERIAL #57 STONE STARTER UNITS BASE FOUNDATION TANDEM COPING EXCAVATION LIMITS NIT STARTER UNITS BASE FOUNDATION MINIMUM RADIUS OF 6 FEET (CONCVE & CONVEX) TYPICAL FREE STANDING CURVED WALL BASE PAD ISOMETRIC VIEW TO MAKE CURVES SEE SUBASSEMBLY DETAILS IN PAGE 2 UNDER TYPICAL CURVED FREE STANDING WALL BASE SUBASSEMBLY UNITS EXCAVATION LIMITS FREE STANDING WALL BASE PAD ISOMETRIC VIEW INFILL MATERIAL #57 STONE 12 IN. MINIMUM RADIUS OF 6 FEET (CONCVE & CONVEX) TYPICAL WALL ASSEMBLY UNIT STARTER UNITS TANDEM COPING BASE FOUNDATION TYPICAL FREE STANDING TO MAKE CURVES SEE SUBASSEMBLY DETAILS EXCAVATION LIMITS 24 in. MAX TYPICAL STRAIGHT FREE STANDING WALL BASE PAD ISOMETRIC VIEW 28 IN. Max INFILL MATERIAL #57 STONE 12 IN. 1. Retaining Wall - 4 degree batter (0.5" setback per course) 6 IN. 6 IN. 24 in. MAX TANDEM COPING INFILL MATERIAL #57 STONE 28 IN. Max STARTER UNIT EIGHT OF DOUBLE FACE WALL OVER RETAINING WALL A TYPICAL CROSS SECTION VIEW BASE FOUNDATION 6 IN. 6 IN. 24 in. MAX MAX HEIGHT OF DOUBLE FACE WALL OVER RETAINING WALL TYPICAL CROSS SECTION VIEW 28 IN. Max STARTER UNIT BASE FOUNDATION 12 For more information visit Belgard.com A 6 IN.

D Design Details (CONTINUED) POST DETAIL VIEWS: TANDEM WALL POST DETAIL VIEWS: 1. Geogrid shall be placed on level backfill and extended over connector and up to the face of the unit, pull grid taut and backfill. Stake as required. 2. Backfill is typically onsite soil unless otherwise shown on the plans. 3. Geotextile fabric as specified by the designing engineer and should be placed at the back of the stone, it is recommended to be used to prevent native soils from infiltrating into the infill material. C TANDEM CAP POST FINISHED GRADE TANDEM CAP FRONT PANEL FRONT PANEL UNDISTURBED SOIL B BACKFILL # 57 STONES ISOMETRIC ELEVATION TYPICAL FENCE CROSS SECTION INFILL MATERIAL # 57 STONE BACK PANEL TYPICAL POST DETAIL INFILL M #5 CO 1. Redirect geogrid above drainage pipes as required to avoid obstructions with drainage pipes extending transversely through the reinforced zone. 2. Reinforce the walls at the vertical obstruction as shown. 3. Backfill is typically onsite soil unless otherwise shown on the plans. CAP UNIT TANDEM UNIT A 3.0 FT (MINIMUM) 8 FENCE OR RAILING (DESIGNED BY OTHERS) SLEEVE AND NON-SHRINK GROUT AROUND POST 7 SLEEVE INSTALLED DURING WALL CONSTRUCTION 6 FILL AREA BETWEEN FACING UNITS WITH FREE-DRAINING AGGREGATE 4 DEPTH VARIES 12" (MIN) OF FREE- DRAINING AGGREGATE BELGARD.COM 13

REINFORCEMENT PLACEMENT FOR CONCAVE CURVES TANDEM WALL TYPICAL GEOGRID INSTALLATION IN CURVES: REINFORCEMENT PLACEMENT FOR CONVEX CURVES 14 For more information visit Belgard.com

REINFORCEMENT PLACEMENT FOR CONCAVE CURVES TANDEM WALL TYPICAL GEOGRID INSTALLATION IN CORNERS: REINFORCEMENT PLACEMENT FOR OPEN CORNERS BELGARD.COM 15

TANDEM WALL TYPICAL WALL TREE PLANTING DETAILS: 1. All planting offsets shall be a minimum of 2 feet + the opening diameter as measured from face of the wall 2. Lateral spacing between openings shall be a minimum of 3 times the opening diameter. 3. 8 Soil reinforcement shall be carefully 7 cut to avoid disturbance of adjacent 6 reinforcement. 5 4. Only top two layers of reinforcement may be cut to allow planting of tree root ball. 5. Extreme care shall be taken if installing irrigation systems to not damage soil reinforcement. 6. Numbers in parenthesis are for example only. TYPICAL WALL TREE PLANTING DETAILS: 4 3 D 5 4 3 2 1 4 x # 1 (12ft) # 2 6 ft 4 x # 2 (24ft) 1- All planting offse 2- Lateral spacing b 3- Soil reinforceme 4- Only top two lay D 5- Extreme care sh 6- Numbers in pare 4 x # 2 (24ft) 1- All planting offsets shall be a minimum of 2 feet + the opening diameter as measured from face of the wall 2- Lateral spacing between openings shall be a minimum of 3 times the opening diameter. C 3- Soil reinforcement shall be carefully cut to avoid disturbance of adjacent reinforcement. 4- Only top two layers of reinforcement may be cut to allow planting of tree root ball. # 1 3 ft 5- Extreme care shall be taken if installing irrigation systems to not damage soil reinforcement. 6- Numbers in parenthesis are for example only. 2 ft + # 2 (8ft) C 2 ft + # 1 (5ft) 2 ft + # 2 B 2 ft + #1 (5 ft) 3 x # 1 (9ft) 4 x ( # 1 + # 2) / 2 (18ft) 3 x # 2 (18ft) #1 PLAN VIEW PLAN VIEW SECTION VIEW 3 ft diameter REFER TO PAGE # 3 FOR WALL DETAIL 2 ft + # 2 (8ft) 2 ft + # 2 (8 ft) 2 ft + #1 (5 ft) B A 3 x # 2 (18ft) #2 6 ft diameter #1 3 ft diameter 8 in. MINIMUM SECTION VIEW LOW PERMEABLE SOIL 8 7 REFER TO PAGE # 3 FOR WALL DETAIL 6 5 4 3 A 16 For more information visit Belgard.com SECTION VIEW drain pipe if required PAGE 12

TANDEM WALL BROKEN PANEL REPLACEMENT: COPING VENEERS STARTING UNITS REPLACEMENT OF A BROKEN VENEER BROKEN VENEER BEFORE REPLACING THE BROKEN VENEER, REMOVE ALL THE VENEERS AND COPINGS FROM TOP OF IT IN A ''V'' SHAPE. ONCE THE AGGREGATES ARE DRAINED FROM THAT SPACE, REPLACE THE BROKEN VENEER AND PUT BACK THE OTHER VENEERS BEFORE REFILLING THE WALL. BROKEN VENEER VENEER TO REMOVE COPING TO REMOVE BELGARD.COM 17

Design Details TANDEM WALL COLUMN LAYING GUIDE: TANDEM COLUMN COMPONENTS 1 Column grid Final height: 42" Connectors: 50 connectors per bag (Enough for 1-42" column) Pallet of panels 21.8 square feet needed per column. Use modules G only (Lg Unit 18.5 w) 24 of the long pieces are needed (21.6 sf) 24 x 24 Cap Unit (Sold Separately) STEP 1 STEP 2 Place the grid on a prepared surface Make sure the outside perimeter of the grid is clear STEP 3 STEP 4 Take a panel and slide the supplied connectors into the dovetails until they snap onto the horizontal rod of the grid. Take another stone and repeat the same process. Make sure you have a corner stone to finish the corner. Once installed, slide the stone along the horizontal axis to adjust the corner. 18 For more information visit Belgard.com

Design Details (CONTINUED) TANDEM WALL COLUMN LAYING GUIDE (CONTINUED): STEP 5 OPTIONAL Once you have completed the first two rows, use a square to make sure the column is square and then fill the space with 3/4" clear aggregate. Fill the empty space with aggregates at every row. If you have to cut the grid before installation on the base, you must cut the vertical rod at mid distance between two horizontal rods as shown below. STEP 6 STEP 7 Column Grid Long Veneers Grooved Veneers See detail view Front Veneers Set first wall course against the column Front Veneers Tandem Connectors To integrate a wall into the column set the first course up against the column. At the second row the long veneer on the column needs to be grooved. Set wall block into grooved veneer. You must groove a panel every other row. STEP 7: GROOVED VENEER DETAIL STEP 8 Row number 3 - full veneer panel Row number 2 - grooved veneer panel Every other row will require a grooved veneer. When starting row 3 place full veneer panel across the top of grooved panel. The wall block in row 3 will butt up against column similar to row 1. BELGARD.COM 19

Design Details (CONTINUED) TANDEM WALL COLUMN LAYING GUIDE (CONTINUED): STEP 9 STEP 10 Remove connector tabs For a cap installation apply adhesive on top of veneer along entire perimeter of column IMPORTANT When you are starting the second row, make sure the base of the top panel hits the top portion of the connector. When you have reached the last row, cut the top portion of the connectors with pliers snippers or just by twisting the top portion with your hands. STEP 11 FINISHED WALL DETAIL 24" x 24" Capping 15" x 24" Tandem Wall Cap Row 4 Grooved veneer course Row 2 Grooved veneer course Apply glue on the top of the panels before putting on the capping. IMPORTANT: The capping must lay on the panels, not on the grid. 20 For more information visit Belgard.com

Design Details (CONTINUED) TANDEM WALL COLUMN AROUND A POST GUIDE: STEP 1 STEP 2 at screwdriver onto clinched corner Insert flat screwdriver onto clinched corner Torque until opening is big enough to clear vertical rod Do the same for all the corners STEP 3 STEP 4 Clinch back all the opened corners using a vise Surround the post with the cage BELGARD.COM 21

Geogrid Estimating Charts REINFORCED GEOGRID DEPTHS (NO-SURCHARGE) MIN GRID DEPTH 7.0' 6.0' 5.0' SANDY LEAN CLAY 26 ϕ ANGLE AND NO SURCHARGE. WALLS UNDER 2.01' TOTAL HEIGHT MAY BE CONSTRUCTED AS GRAVITY WALLS. 4.0' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 5.52' 4.93' - 4.35' 3.76' - 3.18' 2.59' MIN GRID DEPTH 6.0' 5.0' SILTY SAND 30 ϕ ANGLE AND NO SURCHARGE. WALLS UNDER 2.59' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 4.0' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 5.52' 4.93' - 4.35' 3.76' - 3.18' 2.59' MIN GRID DEPTH 6.0' SELECT GRANULAR 34 ϕ ANGLE AND NO SURCHARGE. WALLS UNDER 2.59' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 5.0' 4.0' HEIGHT 7.86' - 6.69' 6.10' - 5.52' 4.93' - 3.18' 2.59' BELGARD - TANDEM WALL REINFORCED GEOGRID DEPTHS (NO SURCHARGE) Notes: Calculations assume a unit weight of 120 LBS/CF Assumed for all soil types. Assumed φ angles for earth pressure calculations are: Select Granular = 34º Silty Sand = 30º and Sandy Lean Clay = 26º Non critical structures with safety factor >1.5. Sliding calculations assume 6" crushed stone leveling pad as compacted foundation material. The information provided is for preliminary design use only. A qualified Professional Engineer shall be consulted. Belgard accepts no liability for the improper use of these tables. WALL HEIGHT GEO-GRID STRENGTH SHALL BE EQUIVALENT TO MIRAFI 2XT OR GREATER 8" LOW PERMEABLE SOIL REINFORCED ZONE GRID DEPTH 22 For more information visit Belgard.com

REINFORCED GEOGRID DEPTHS (250 PSF LIVE LOAD) MIN GRID DEPTH SANDY LEAN CLAY 26 ϕ ANGLE AND 250 PSF SURCHARGE. WALLS UNDER 2.01' TOTAL HEIGHT MAY BE CONSTRUCTED AS GRAVITY WALLS. 7.5' 7.0' 6.0' 5.0' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.76' 3.18' - 2.59' 2.01' MIN GRID DEPTH SILTY SAND 30 ϕ ANGLE AND 250 PSF SURCHARGE. WALLS UNDER 2.01' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 7.0' 6.0' 5.0' 4.5' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.76' 3.18' 2.59' MIN GRID DEPTH SELECT GRANULAR 34 ϕ ANGLE AND 250 PSF SURCHARGE. WALLS UNDER 2.59' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 6.0' 5.0' 4.5' 4.0' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.76' 3.18' 2.59' BELGARD - TANDEM WALL REINFORCED GEOGRID DEPTHS (250 PSF LIVE LOAD) Notes: Calculations assume a unit weight of 120 LBS/CF Assumed for all soil types. Assumed φ angles for earth pressure calculations are: Select Granular = 34º, Silty Sand= 30º and Sandy Lean Clay = 26º Non critical structures with safety factor >1.5. Sliding calculations assume 6 crushed stone leveling pad as compacted foundation material. The information provided is for preliminary design use only. A qualified Professional Engineer shall be consulted. Oldcastle accepts no liability for the improper use of these tables. GEO-GRID STRENGTH SHALL BE EQUIVALENT TO MIRAFI 2XT OR GREATER WALL HEIGHT 3.00' MIN 250 PSF SURCHARGE REINFORCED ZONE GRID DEPTH BELGARD.COM 23

REINFORCED GEOGRID DEPTHS (3H:1V BACK SLOPE) MIN GRID DEPTH SANDY LEAN CLAY 26 ϕ ANGLE AND 3H:1V BACK SLOPE. WALLS UNDER 2.01' TOTAL HEIGHT MAY BE CONSTRUCTED AS GRAVITY WALLS. 8.0' 7.0' 6.5' 5.0' 4.5' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.76' 3.18' - 2.59' 2.01' MIN GRID DEPTH SILTY SAND 30 ϕ ANGLE AND 3H:1V BACK SLOPE. WALLS UNDER 2.01' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 7.0' 6.0' 5.5' 4.5' 4.0' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.76' 3.18' - 2.59' 2.01' MIN GRID DEPTH SELECT GRANULAR 34 ϕ ANGLE AND 3H:1V BACK SLOPE. WALLS UNDER 2.59' TOTAL HEIGHT MAY BE CONSTRUCTED AS A GRAVITY WALL. 6.0' 5.0' 4.5' 3.5' HEIGHT 7.86' - 7.27' 6.69' - 6.10' 5.52' - 4.93' 4.35' - 3.18' 2.59' BELGARD - TANDEM WALL REINFORCED GEOGRID DEPTHS (3H:1V BACK SLOPE) Notes: Calculations assume a unit weight of 120 LBS/CF Assumed for all soil types. Assumed φ angles for earth pressure calculations are: Select Granular = 34º, Silty Sand= 30º and Sandy Lean Clay = 26º Non critical structures with safety factor >1.5. Sliding calculations assume 6 crushed stone leveling pad as compacted foundation material. The information provided is for preliminary design use only. A qualified Professional Engineer shall be consulted. Oldcastle accepts no liability for the improper use of these tables. WALL HEIGHT GEO-GRID STRENGTH SHALL BE EQUIVALENT TO MIRAFI 2XT OR GREATER 8" LOW PERMEABLE SOIL REINFORCED ZONE GRID DEPTH 3 MIN 1 Oldcastle Architectural 900 Ashwood Parkway Suite 600 Atlanta, GA 30338 770-677-2349 For more info visit: Belgard.com 24 For more information visit Belgard.com GET SOCIAL Pinterest.com/Belgard Facebook.com/BelgardHardscapes Belgard.com/Blog YouTube.com/BelgardHardscapes Belgard.com/Enews Twitter.com/Belgard 2016 Oldcastle. All Rights Reserved. BEL16-038