G-FORCE SEGMENTAL RETAINING WALL DESIGN CHARTS FOR USA

Transcription

1 SEGMENTAL RETAINING WALL S FOR USA

2 TABLE OF CONTENTS PREFACE Page 2 S: NOTES AND ASSUMPTIONS Page TYPICAL CROSS SECTION Page 4 CLEAN SAND / GRAVEL /SAND & GRAVEL MIXES Case N : No surcharge, No backslope, Page 5 Case N 2: Surcharge ( ft behind wall), No backslope, Page 6 Case N : Surcharge ( ft behind wall), No backslope, Page 7 Case N 4: No surcharge, V:H backslope, Page 8 FINE SANDS & SILTY SANDS Case N 5: No surcharge, No backslope, Page 9 Case N 6: Surcharge ( ft behind wall), No backslope, Page 0 Case N 7: Surcharge ( ft behind wall), No backslope, Page Case N 8: No surcharge, V:H backslope, Page 2 LOW PLASTICITY SILTS AND CLAYS Case N 9: No surcharge, No backslope, Page Case N 0: Surcharge ( ft behind wall), No backslope, Page 4 Case N : Surcharge ( ft behind wall), No backslope, Page 5 Case N 2: No surcharge, V:H backslope, Page 6 PRODUCT OVERVIEW & TECHNICAL SPECIFICATIONS Page 7 PREFACE This document contains Techo-Bloc s design charts for segmental retaining wall system with or without the use of geogrid reinforcement. The charts help determine under specific conditions the maximum possible wall height without geogrid and for higher walls the necessary geogrid length and positioning. First, evaluate the proposed conditions for the retaining wall project. It is important to determine the soil type, the load or surcharge and the backslope/toeslope conditions that most closely represent the final constructed wall. Second, select the chart case number that most closely resembles the final project conditions. Finally, select the wall height (including embedment) that will best fit the project wall profile. This document has been prepared for the following cases: SOIL SURCHARGE BACKSLOPE TOESLOPE CASE N Clean sand / gravel /sand & gravel mixes No No No CASE N 2 Clean sand / gravel /sand & gravel mixes ( ft behind the wall) No No CASE N Clean sand / gravel /sand & gravel mixes ( ft behind the wall) No No CASE N 4 Clean sand / gravel /sand & gravel mixes No V : H No 2

3 V SOIL SURCHARGE BACKSLOPE TOESLOPE CASE N 5 Fine Sands & Silty Sands No No No CASE N 6 Fine Sands & Silty Sands ( ft behind the wall) No No CASE N 7 Fine Sands & Silty Sands ( ft behind the wall) No No CASE N 8 Fine Sands & Silty Sands No V : H No CASE N 9 Low Plasticity Silts and Clays No No No CASE N 0 Low Plasticity Silts and Clays ( ft behind the wall) No No CASE N Low Plasticity Silts and Clays ( ft behind the wall) No No CASE N 2 Low Plasticity Silts and Clays No V : H No The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary design use only. A qualified engineer should be consulted for the final design to be used for construction. Techo- Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers can not under any circumstances be held liable for the incorrect use of information contained in the design charts. S: NOTES AND ASSUMPTIONS This preliminary guide has been prepared for three different soil types to approximate good (Clean sand / gravel /sand & gravel mixes), medium (Fine Sands & Silty Sands) and poor (Low Plasticity Silts and Clays) soil conditions to cover the typical design range. The description of the soil is provided for information purposes; it is the actual shear strength parameter that will govern the design. Additionally, the following four different load conditions were considered: I. A horizontal surface above the wall with no surcharge to account for lawn or similar load conditions. II. A horizontal surface above the wall with a uniform surcharge of (4.8 kpa) to account for paved surfaces and/or parking or alleys for car and light vehicles traffic. III. A horizontal surface above the wall with a uniform surcharge of (2 kpa) to account for heavy vehicle traffic or fire lanes. IV. A V:H slope above the wall (backslope). All surcharges are applied at least 2 inches behind the tail of the units and No slope below the wall (Toeslope) conditions were considered. The design parameters and additional assumptions are shown in each chart. The design charts show the number, position and length of the geogrids for a Techo-Bloc G-Force wall, with 9/6 (4 mm) setback per course ( batter), based on the height of the wall, the soil type and the load conditions. The wall height varies approximately from. ft (0.4 m) to 6 ft (4.88 m), gradually increasing in height increments of ft ( m). The wall height shown does not include the thickness of the cap. First drawing of each case shows maximum height without geogrid under the specific conditions shown. Minimum reinforcement lengths were set to 4 feet (.22 m) and a 70% reinforcement length to wall height ratio. All geogrid lengths shown are the actual lengths of geogrid required as measured from the front wall face to the end of the geogrid. The charts assume the use of geogrid Miragrid XT (by TenCate) with Tult=500 plf (5. kn/m). Unless shown otherwise in the charts: top layers of geogrid shall never be more than 2 units from the top of the wall; and bottom layers of geogrid shall never be more than 2 units from the top of the leveling pad. The design charts contained herein have been compiled and prepared by Techo-Bloc and to the best of our knowledge. Final determination of the suitability for the use of this document is the sole responsibility of the user. Structural design and analysis for construction purposes shall be performed, using the actual conditions of the proposed site, by a registered Professional Engineer. For further information, please contact our technical service department.

4 Typical G-Force Cross Section TYPICAL CROSS SECTION (GRAVITY WALL) GRAVITY WALL Typical G-Force Cross Section GRAVITY WALL Exposed Height Setback HDPE vertical 9/6" (4 keymm) Exposed Height Wall inclination () Embedment depth Toeslope Embedment depth Surcharge offset distance Cap from Techo-Bloc Surcharge offset G-Force Block distance from Cap from Techo-Bloc HDPE vertical key G-Force Wall inclination Block from() Techo-Bloc Setback 9/6" (4 mm) Toeslope Surcharge Backslope Surcharge Topsoil Low permeability soil Backslope Retained soil Topsoil Move upper blocks forward during installation to ensure that system is locked Low permeability soil /4'' (20 mm) clean stone to extend at least 2'' (00 mm) behind blocks Retained soil Fill cavities and wedge in-between blocks with /4'' (20 mm) clean stone Move upper blocks forward during installation to ensure that system is locked Geotextile /4'' (20 mm) clean stone to extend at least 2'' (00 mm) behind blocks Perforated drain pipe draining to daylight or connected to existing drainage Fill cavities system and wedge in-between blocks with /4'' (20 mm) clean stone Geotextile Leveling pad (As Specified by Engineer) Perforated Foundation drain soil pipe draining to daylight or connected to existing drainage system Leveling pad (As Specified by Engineer) REINFORCED WALL Cap from Techo-Bloc Surcharge offset distance Foundation soil REINFORCED WALL TYPICAL CROSS SECTION Surcharge (REINFORCED offset WALL) Cap from Techo-Bloc distance Surcharge Surcharge Geogrid length Backslope Topsoil Low permeability soil Backslope Topsoil Low permeability soil Retained soil Exposed Height Exposed Height Wall inclination () G-Force Block from Techo-Bloc Setback Wall inclination 9/6 ''() (4 mm) HDPE vertical key Setback 9/6 '' (4 mm) Fill cavities and wedge in-between HDPE vertical blocks with key /4'' (20 mm) clean stone Fill cavities and wedge in-between blocks with /4'' Embedment(20 mm) clean ToeSlope stone depth Embedment depth G-Force Block from Techo-Bloc ToeSlope Geogrid length Geogrid Retained soil /4'' (20 mm) clean stone to Geogrid extend at least 2'' (00 mm) behind blocks /4'' (20 mm) clean stone to extend at least 2'' (00 mm) behind Reinforced blocks soil Move upper blocks forward during Reinforced installation soil to ensure that system is locked Geotextile Move upper blocks forward during installation to ensure that system is locked Perforated drain pipe draining to daylight or Geotextile connected to existing drainage system Leveling pad (As specified by Perforated Engineer) drain pipe draining to daylight or connected Foundation to existing soil drainage system Leveling pad (As specified by Engineer) Foundation soil 4

5 CLEAN SAND/GRAVEL/ SAND AND GRAVEL MIXES (Ø=4, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.25, Cds=0.9, Ci=0.9) CASE N : No Surcharge No Backslope '-4" (.02m) (.22m) 4'-8" 4'-0'' (.22 m) (.42m) 4'-0'' (.22 m) 4'-0'' (.22 m) 6'-0'' (.8 m) (.8m) 0'-0" 5'-0'' (.52 m) 6'-0'' (.8 m) (.05m) (2.44m) 5'-0'' (.52 m) 6'-0'' (.8 m) 5'-0'' (.52 m) 6'-0'' (.8 m) 0'-0'' (.05 m) 0'-0'' (.05 m) (.66m) 0'-0'' (.05 m) (4.88m) (4.27m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 4, γ = 20 pcf); retained soil (φ = 4, γ = 20 pcf); foundation soil (φ= 4, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 5

6 CLEAN SAND/GRAVEL/ SAND AND GRAVEL MIXES (Ø=4, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.25, Cds=0.9, Ci=0.9) CASE N 2 : Surcharge ( ft behind the wall) No Backslope (0.6m) 2'-8" (0.8m) 4'-0'' (.22 m) (.22m) 4'-0'' (.22 m) 4'-0'' (.22 m) 6'-0'' (.8 m) (.8m) 0'-0" 5'-0'' (.52 m) 6'-0'' (.8 m) (.05m) (2.44m) 5'-0'' (.52 m) 6'-0'' (.8 m) 5'-0'' (.52 m) 6'-0'' (.8 m) 0'-0'' (.05 m) 0'-0'' (.05 m) (.66m) 0'-0'' (.05 m) (4.88m) (4.27m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 4, γ = 20 pcf); retained soil (φ = 4, γ = 20 pcf); foundation soil (φ= 4, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 6

7 CLEAN SAND/GRAVEL/ SAND AND GRAVEL MIXES (Ø=4, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.25, Cds=0.9, Ci=0.9) CASE N : Surcharge ( ft behind the wall) No Backslope '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 4'-6'' (.7 m) 4'-6'' (.7 m) 6'-6'' (.98 m) (.8m) 0'-0" 5'-6'' (.68 m) 6'-6'' (.98 m) (.05m) (2.44m) 5'-6'' (.68 m) 6'-6'' (.98 m) 5'-6'' (.68 m) 6'-6'' (.98 m) 0'-0'' (.05 m) 0'-0'' (.05 m) (.66m) 0'-0'' (.05 m) (4.88m) (4.27m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 4, γ = 20 pcf); retained soil (φ = 4, γ = 20 pcf); foundation soil (φ= 4, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 7

8 CLEAN SAND/GRAVEL/ SAND AND GRAVEL MIXES (Ø=4, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.25, Cds=0.9, Ci=0.9) CASE N 4 : No Surcharge Backslope V : H 2'-8" (0.8m) '-4" (.02m) 4'-0'' (.22 m) 4'-8" (.42m) 4'-6'' (.7 m) 4'-6'' (.7 m) 7'-0'' (2. m) (.8m) 0'-0" 5'-6'' (.68 m) 7'-0'' (2. m) (.05m) (2.44m) 5'-6'' (.68 m) 7'-0'' (2. m) 5'-6'' (.68 m) 7'-0'' (2. m) 2'-6'' (.8 m) '-0'' (.5 m) 2'-6'' (.8 m) '-0'' (.5 m) 2'-6'' (.8 m) (.66m) '-0'' (.5 m) (4.88m) (4.27m) '-0'' (.5 m) 2'-6'' (.8 m) 2'-6'' (.8 m) '-0'' (.5 m) 2'-6'' (.8 m) '-0'' (.5 m) 2'-6'' (.8 m) '-0'' (.5 m) 2'-6'' (.8 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 4, γ = 20 pcf); retained soil (φ = 4, γ = 20 pcf); foundation soil (φ= 4, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 8

9 FINE SANDS & SILTY SANDS (Ø=0, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.0, Cds=0.8, Ci=0.8) CASE N 5 : No Surcharge No Backslope (0.6m) 2'-8" (0.8m) 4'-0'' (.22 m) (.22m) 4'-0'' (.22 m) 4'-0'' (.22 m) 6'-6'' (.98 m) (.8m) 0'-0" 5'-6'' (.68 m) 6'-6'' (.98 m) (.05m) (2.44m) 5'-6'' (.68 m) 6'-6'' (.98 m) 5'-6'' (.68 m) 6'-6'' (.98 m) 2'-0'' (.66 m) 0'-6'' (.20 m) 2'-0'' (.66 m) 0'-6'' (.20 m) 2'-0'' (.66 m) (.66m) (4.27m) 0'-6'' (.20 m) (4.88m) 0'-6'' (.20 m) 2'-0'' (.66 m) 2'-0'' (.66 m) 0'-6'' (.20 m) 2'-0'' (.66 m) 0'-6'' (.20 m) 2'-0'' (.66 m) 0'-6'' (.20 m) 2'-0'' (.66 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 0, γ = 20 pcf); retained soil (φ = 0, γ = 20 pcf); foundation soil (φ= 0, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 9

10 FINE SANDS & SILTY SANDS (Ø=0, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.0, Cds=0.8, Ci=0.8) CASE N 6 : Surcharge ( ft behind the wall) No Backslope '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 4'-6'' (.7 m) 4'-6'' (.7 m) 7'-0'' (2. m) (.8m) 0'-0" 5'-6'' (.68 m) 7'-0'' (2. m) (.05m) (2.44m) 5'-6'' (.68 m) 7'-0'' (2. m) 5'-6'' (.68 m) 7'-0'' (2. m) 2'-0'' (.66 m) '-0'' (.5 m) 2'-0'' (.66 m) '-0'' (.5 m) 2'-0'' (.66 m) (.66m) '-0'' (.5 m) (4.88m) (4.27m) '-0'' (.5 m) 2'-0'' (.66 m) 2'-0'' (.66 m) '-0'' (.5 m) 2'-0'' (.66 m) '-0'' (.5 m) 2'-0'' (.66 m) '-0'' (.5 m) 2'-0'' (.66 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 0, γ = 20 pcf); retained soil (φ = 0, γ = 20 pcf); foundation soil (φ= 0, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 0

11 FINE SANDS & SILTY SANDS (Ø=0, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.0, Cds=0.8, Ci=0.8) CASE N 7 : Surcharge ( ft behind the wall) No Backslope '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 5'-6'' (.68 m) 5'-6'' (.68 m) (.8m) 0'-0" 6'-6'' (.98 m) (.05m) (2.44m) 6'-6'' (.98 m) 6'-6'' (.98 m) '-0'' (.96 m) '-0'' (.96 m) 0'-6'' (.20 m) '-0'' (.96 m) (.66m) 0'-6'' (.20 m) (4.88m) 0'-6'' (.20 m) (4.27m) '-0'' (.96 m) '-0'' (.96 m) 0'-6'' (.20 m) '-0'' (.96 m) 0'-6'' (.20 m) '-0'' (.96 m) 0'-6'' (.20 m) '-0'' (.96 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 0, γ = 20 pcf); retained soil (φ = 0, γ = 20 pcf); foundation soil (φ= 0, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department.

12 FINE SANDS & SILTY SANDS (Ø=0, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0, RFcr=.45, RFid=.0, Cds=0.8, Ci=0.8) CASE N 8 : No Surcharge Backslope V : H (0.6m) 2'-8" (0.8m) 4'-0'' (.22 m) (.22m) 4'-6'' (.7 m) 4'-6'' (.7 m) (.8m) 0'-0" 6'-0'' (.8 m) (.05m) (2.44m) 6'-0'' (.8 m) 6'-0'' (.8 m) 7'-6'' (5.4 m) 4'-6'' (4.42 m) 7'-6'' (5.4 m) 4'-6'' (4.42 m) 7'-6'' (5.4 m) (.66m) 4'-6'' (4.42 m) (4.88m) (4.27m) 4'-6'' (4.42 m) 7'-6'' (5.4 m) 7'-6'' (5.4 m) 4'-6'' (4.42 m) 7'-6'' (5.4 m) 4'-6'' (4.42 m) 7'-6'' (5.4 m) 4'-6'' (4.42 m) 7'-6'' (5.4 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 0, γ = 20 pcf); retained soil (φ = 0, γ = 20 pcf); foundation soil (φ= 0, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 2

13 LOW PLASTICITY SILTS AND CLAYS (Ø=26, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0,RFcr=.45, RFid=.05, Cds=0.7, Ci=0.7) CASE N 9 : No Surcharge No Backslope '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 5'-0'' (.52 m) 5'-0'' (.52 m) (.8m) 6'-6'' (.98 m) (2.44m) 6'-6'' (.98 m) 6'-6'' (.98 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 26, γ = 20 pcf); retained soil (φ = 26, γ = 20 pcf); foundation soil (φ= 26, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department.

14 LOW PLASTICITY SILTS AND CLAYS (Ø=26, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0,RFcr=.45, RFid=.05, Cds=0.7, Ci=0.7) CASE N 0 : Surcharge ( ft behind the wall) No Backslope '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 5'-6'' (.68 m) 5'-6'' (.68 m) (.8m) 7'-0'' (2. m) (2.44m) 7'-0'' (2. m) 7'-0'' (2. m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 26, γ = 20 pcf); retained soil (φ = 26, γ = 20 pcf); foundation soil (φ= 26, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 4

15 LOW PLASTICITY SILTS AND CLAYS (Ø=26, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0,RFcr=.45, RFid=.05, Cds=0.7, Ci=0.7) CASE N : Surcharge ( ft behind the wall) No Backslope '-4" (0.4m) (0.6m) 5'-0'' (.52 m) (.22m) 7'-0'' (2. m) 7'-0'' (2. m) 0'-0'' (.05 m) (.8m) (2.44m) 0'-0'' (.05 m) 0'-0'' (.05 m) 0'-0'' (.05 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 26, γ = 20 pcf); retained soil (φ = 26, γ = 20 pcf); foundation soil (φ= 26, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 5

16 LOW PLASTICITY SILTS AND CLAYS (Ø=26, g = 20 pcf) GEOGRID: MIRAGRID XT BY TENCATE (RFd=.0,RFcr=.45, RFid=.05, Cds=0.7, Ci=0.7) CASE N 2 : No Surcharge Backslope V : H '-4" (0.4m) (0.6m) 4'-0'' (.22 m) (.22m) 5'-0'' (.52 m) 5'-0'' (.52 m) '-0'' (.5 m) (.8m) 7'-0'' (2. m) (2.44m) 7'-0'' (2. m) '-0'' (.5 m) '-0'' (.5 m) 7'-0'' (2. m) '-0'' (.5 m). The information contained in the design charts is supplied for information purposes only and as such should only be used for preliminary designs.. Soil parameters: reinforced soil (φ = 26, γ = 20 pcf); retained soil (φ = 26, γ = 20 pcf); foundation soil (φ= 26, γ = 20 pcf) 9. The geogrid layout has been optimized to satisfy the design requirements of the NCMA's Design Manual for Segmental Retaining Walls, rd Edition. 0. The minimum burial depth must be 6 in (50 mm) or 0% of the exposed height, whichever is greater.. Engineering judgement should be used when interpolating between heights. 2. Techo-Bloc and its predecessors, successors, beneficiaries, employees, associates, administrators and insurers accepts no liability for the incorrect use of information contained in the design charts.. For further information, please contact our technical service department. 6

17 PRODUCT OVERVIEW REGULAR UNIT Approx. weight: 79 lbs (5.8 kg) Coverage per unit: ft 2 (0.09 m 2 ) CORNER UNIT Approx. weight: 88 lbs (9.8 kg) HDPE VERTICAL KEY (alignment pin) 8 5 8'' (29 mm) 8'' (20 mm) 8'' (20 mm) Ø 9 6'' (5 mm) 8 8'' (206 mm) 7 6'' (290 mm) 8'' (457 mm) 9'' (229 mm) 8'' (457 mm) COLORS PATTERN: linear SANDLEWOOD CHAMPLAIN GREY CHESTNUT BROWN SHALE GREY Note: Color availability may change without notice. Contact your Techo-Bloc representative for product availability. TECHNICAL SPECIFICATIONS PHYSICAL CHARACTERISTICS Compressive Strength 5050 psi (5 MPa) Water Absorption (max.) 9 lb/ft (44 kg/m ) Freeze-Thaw.0% max. loss of mass after 00 cycles.5% max. loss of mass after 50 cycles DESIGN DATA Horizontal Setback 9/6 in. (4 mm) Infilled Unit Weight 22 pcf (9.2 kn/m ) Infilled center of gravity (measured from the face of the unit) 5 7/6 in. (8 mm) Dimensional Tolerances Height: + /6 in. [.5 mm] Length & Width: + /8 in. [ mm] Note: Meets and exceeds the requirements of the ASTM C 72 Standard Specification for Dry-Cast Segmental Retaining Wall Units. Block Shear Strength (ASTM D 696) Block -Geogrid Shear Strength (Miragrid XT) (ASTM D 696) Block - Geogrid Connection Strength (Miragrid XT) (ASTM D 668) Vub[lb/ft] = N * tan(8) 826 Vub[kN/m] = N * tan(8) 55.8 Vug[lb/ft] = N * tan(6) 496 Vug[kN/m] = N * tan(6) 5.0 Tc[lb/ft] = N * tan(8) 005 Tc[kN/m] = N * tan(8) 4.8 Note: The infilled unit weight shown here is based on an assumed aggregate unit weight of 96.8 lb/ft³ (550 kg/m³ ) used to fill the core cavity of the block and the space between adjacent blocks. 7

18 USA PENNSYLVANIA 852 W. Pennsylvania Avenue, Pen Argyl, PA 8072 PENNSYLVANIA 2 Quarry Road, Douglassville, PA 958 MASSACHUSETTS 70 East Brookfield Rd., North Brookfield, MA 055 NORTH CAROLINA 55 Surrett Drive, Archdale, NC 2726 OHIO 97 Industrial Street, Rittman, OH ILLINOIS 40, 85th Avenue West, Rock Island, IL 620 ILLINOIS 242 W. Riverside Dr, Channahon, IL 6040 INDIANA 297 County Road 27, Waterloo, IN 4679 CANADA MONTREAL 5255 Albert-Millichamp street, Saint-Hubert, QC JY 8Z8 OTTAWA 60 Hazeldean Road - P.O. Box 79, Stittsville, ON K2S B4 TORONTO 0 Freshway Drive, Vaughan, ON L4K S TORONTO 050 Industrial Road, Ayr, ON N0B E0 DE-ICING SALT RESISTANT STRENGTH & DURABILITY TRANSFERABLE LIFETIME WARRANTY COLOR THROUGH & THROUGH TOLL FREE: PROUD MEMBER OF: