48 > walls and steps OVERVIEW OF PALLET – MINI-CRETA PLUS 3" AND 6" 3" (A, B, C) Cubing/pallet: 24 sq. ft (2.23 sq. m) Weight/pallet: 2350 lb (1066 kg) Thickness: 2.95" (75 mm) Texture: Split face and Aged 8 rows of 3 sq. ft (0.28 sq. m) per pallet 32 units of A, B and C per pallet For the “C” units a pallet contains: 16 regular units, 8 left and 8 right corner units. 6" (A, B, C) Cubing/pallet: 30 sq. ft (2.79 sq. m) Weight/pallet: 3000 lb (1361 kg) Thickness: 5.9" (150 mm) Texture: Split face and Aged 5 rows of 6 sq. ft (0.56 sq. m) per pallet 20 units of A, B and C per pallet For the “C” units a pallet contains: 10 regular units, 5 left and 5 right corner units. Mini-Creta Plus 3" (3011) and 6" (3012) CND Patent: 2,114,677 US Patent: 5,528,873 Height Depth Width 1 Width 2 in (mm) in (mm) in (mm) in (mm) A 2.95 (75) 9.84 (250) 9.05 (230) 7 (180) B 2.95 (75) 9.84 (250) 11.8 (300) 9.84 (250) C 2.95 (75) 9.84 (250) 14.75 (375) 13.5 (344) Height Depth Width 1 Width 2 in (mm) in (mm) in (mm) in (mm) A 5.9 (150) 9.84 (250) 9.05 (230) 7 (180) B 5.9 (150) 9.84 (250) 11.8 (300) 9.84 (250) C 5.9 (150) 9.84 (250) 14.75 (375) 13.5 (344) B C A right corner left corner 3" B A C C right corner left corner 6"
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OVERVIEW OF PALLET – MINI-CRETA PLUS 3" AND 6"
3" (A, B, C)
Cubing/pallet: 24 sq. ft (2.23 sq. m)Weight/pallet: 2350 lb (1066 kg)Thickness: 2.95" (75 mm)Texture: Split face and Aged
8 rows of 3 sq. ft (0.28 sq. m) per pallet32 units of A, B and C per pallet
For the “C” units a pallet contains: 16 regular units, 8 left and 8 right corner units.
6" (A, B, C)
Cubing/pallet: 30 sq. ft (2.79 sq. m)Weight/pallet: 3000 lb (1361 kg)Thickness: 5.9" (150 mm)Texture: Split face and Aged
5 rows of 6 sq. ft (0.56 sq. m) per pallet20 units of A, B and C per pallet
For the “C” units a pallet contains: 10 regular units, 5 left and 5 right corner units.
Mini-Creta Plus3" (3011) and 6" (3012)
CND Patent: 2,114,677 US Patent: 5,528,873
Height Depth Width 1 Width 2 in (mm) in (mm) in (mm) in (mm)
Segmental block retaining walls are enormously popular these days so much that a wall of 24 feet (7 m) high supporting a 1,000 PSF (450 k/sq.ft) surcharge is no longer thought of as a reinforced concrete application. Techo-Bloc’s Monumental Blok is “granite like” in appearance and suits high wall applications very well. The base block and regular unit allow versatile applications and offer superior structural strength. The units have tapered sidewalls to be able to achieve interior and exterior curves. When incorporating the built-in 10-degree batter under the right soil conditions, walls as high as 10 feet (3.25 m) can be achieved without the use of geogrid. The appearance of the Monumental Blok will enhance any environment, as well as soften the image of an industrial facility.Monumental Blok is mechanically installed and greatly reduces installation time avoiding manual labor. Lifting the Monumental Blok units with excavation equipment already on-site for earthwork reduces crew downtime. The Monumental Blok with its large 16" x 32" x 35" (400 x 800 x 876 mm) profile when placed in a running bond stacking pattern brings back the natural carved beauty of the quarry stone from a bygone era.
INTRODUCING THE MONUMENTAL BLOK
EXAMINATIONS AND PREPARATIONA. Notify the wall design engineer of site conditions, which may affect wall performance, soil conditions observed
other than those assumed, or other conditions that may require a reevaluation of the wall design.B. Verify the location of existing structures and utilities prior to excavation. C. Ensure surrounding structures are protected from the effects of wall excavation. Embankment support, if required,
is the responsibility of the Contractor, including stability of the excavation area and its’ influence on adjacent properties and structures.
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EXCAVATION AND FOUNDATION PREPARATIONA. Excavate the native soil to the lines and grades specified according to the architectural plans of the landscape
project or as directed by a wall design engineer. After excavating the native soil and prior to adding base material, remove loose material from the trench and compact the designated area. Use care in excavating to prevent disturbance of the subgrade beyond the lines shown.
B. Beginning at the Monumental wall’s lowest elevation point; excavate a trench with a minimum width of 36" (1 m) for the regular Monumental Blok unit or 48" (1.25 m) wide for the Monumental Base unit down the length of the wall that will accommodate at least all of the base material and 8" (200 mm) of block embedment. Fill over-excavated areas with suitable compacted backfill, as recommended by a wall design engineer.
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MONUMENTAL WALL INSTALLATION INSTRUCTIONS
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Monumental BlokInstallation (continued)
Geotextile and compaction
Base leveling after compaction
Leveling each unit
Installing the first row
BASE COURSE PREPARATIONA. Before laying your base materials install a geotextile membrane along the bottom and banks of the trench
to prevent the contamination of natural soils or their migration into the granular base. B. Place base materials to the depths and widths shown on the drawings upon undisturbed soils, or foundation soils
(unless foundation soil correction is specified by a wall design engineer).C. Extend the leveling pad laterally at least 6 inches (15 cm) in front and behind the lowermost Monumental
retaining wall unit.D. For leveling the pad installation, place and compact a minimum of 8" (200 mm) base material to 95 percent
Standard Proctor. Verify that the base is level with a transit or hand level. Be aware that the base material (commonly referred to as road base or base aggregate) will vary from region to region.
E. If the project requires a reinforced footing, assure that your footing is below the frost depth.F. Compact aggregate base material to provide a level, hard surface on which to place the first course of units.G. Prepare base materials to ensure complete contact between the split faces of all Monumental retaining wall units
installed. Gaps are unacceptable.
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WALL CONSTRUCTIONA. The Monumental Wall unit has a unique lifting system. In order to lift a Monumental Blok you must first start
by securely attaching a chain or sling with a minimal capacity of 2 tons to a mechanical vehicle capable of withstanding and lifting the Monumental Blok weight securely (665 lb regular unit and 1130 lb for base unit). Attach a chain or sling securely to the Monumental-lifting Anchor provided by Techo-Bloc and insert the Monumental-lifting Anchor into the opening on the top of the block. (Warning: when lifting the Monumental Blok assure that your hands are kept in the designated area of the Monumental-lifting Anchor device at all times to avoid any injury.) Turn the Monumental-lifting Anchor 90 degrees to lock the Monumental Blok into place. Lift the Monumental Blok up securely and place into the desired area. Stand clear of the Monumental Blok while it is suspended in the air for security reasons.
B. Please note that a separate “Z” insert is used to build a vertical wall. Make sure to notify your local dealer when building a vertical wall.
C. Place the first course of base block on the prepared base material. Make sure all units are level and aligned correctly. Maintain the same elevation at the top of each unit within each section of the base course. Assure that all Monumental units are placed side-by-side for full length of wall. Use a string line measured from the back of the block to set your alignment.
D. Place your drainage aggregate at a height of a minimum 12" (30 cm) directly behind the Monumental wall units. Fill in the voids of the Monumental units with drainage aggregate. Provide a drainage zone behind the wall units to within 12" (30 cm) of the final grade. Cap the backfill and drainage aggregate zone with 9" (20 cm) of impervious material (see image below).
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Drainage and gulley
Cleaning debris off units
Installing geogrid horizontaly
Tensioning geogrid
E. Install a perforated PVC drainage pipe 4" (10 cm) in diameter, at the lowest elevation possible, and maintain gravity flow of water to the outside of the reinforced zone. Slope the main collection drainage pipe, located just behind the Monumental Blok units 1/8" (3 mm) per foot, this will give you a 2% slope and provide gravity flow to the daylighted areas. Daylight the main collection drainage pipe through the face of the wall, and/or to an appropriate location away from the Monumental wall at each low point or at 50' (15 m) maximum intervals along the wall. You can also connect the drainage pipe to a storm sewer system at 50' (15 m) maximum interval.
F. For vertical and battered (10 degrees) Monumental wall units’ successive courses must be interlocked with a concrete insert specified by and manufactured by Techo-Bloc. For Monumental walls less than 10' (3 m) high, an insert must be inserted into the top groove of the prior course of Monumental Bloks and also in between and under each vertical joint of the two adjacent Monumental units in order to create a secure interlock on your Monumental Bloks. Walls between 10' and 20' (3 and 6 m) must have an additional insert put into the center of the bottom slot of the Monumental Blok. For walls exceeding 20' (6 m) in height a wall design engineer needs to specify the placement of inserts. When geogrid (geosynthetic reinforcement) is required, the insert must be installed above the geogrid (geosynthetic reinforcement) so that it gets wedged into the slots.
G. Check each course for level and alignment. Prior to adding successive courses, the top of each Monumental Blok needs to be cleaned free of foreign material. Adjust units individually to properly maintain a level and aligned course prior to proceeding with each additional course.Note: The Monumental Blok is designed to build a wall vertically or with a 10 degree set back.
H. Repeat this process for each successive course. Large compaction or construction equipment should be kept a minimum of 3' (1 m) from the back of the wall. This 3-foot area should be compacted with a vibrating plate compactor for security measures.
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MULTI-LEVEL BASE WALL When building a Monumental wall and arriving to a different elevation (landing), either at an incline or decline, the landing must be constructed according to rigorous standards.A. Separate the elevation into separate landings as per engineers design.B. When calculating the landing, take into account the drop value of the elevation of the Monumental wall.
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STEPPED BASEWhen building a Monumental wall along either an inclining or declining slope, step the base unit to accommodate the grade change. The upper and lower landing must be constructed according to Section 3 (BASE COURSE PREPARATION).A. Step your units accordingly in order to maintain the required embedment.B. Maintain running bond joint pattern so that vertical joints are staggered between courses.C. Use the longest unit (Monumental regular) to maximize bridging between steps.
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GEOGRID INSTALLATION (When Required)Install the geogrid (geosynthetic reinforcement) in accordance with geosynthetic manufacturer’s recommendations and the drawings they provide.A. Orient the geogrid with the highest strength axis perpendicular to the wall face.B. Prior to geogrid placement, place the backfill and compact to the elevation of the top of the wall units and
to 95 percent of the standard Proctor to a maximum of 3' (1 m) from the back of the wall. (ASTM D 698 at the elevation of the geogrid).
C. Place geogrid at the specified elevations and to the specified lengths shown on the wall design engineer’s drawings.D. Lay the geogrid horizontally on top of the Monumental walls units and the compacted backfill soils. Place the
geogrid within two inches of the face of the Monumental wall units. Place the next course of Monumental wall units on top of the geogrid.
E. The geogrid must be applied with tension and free of wrinkles before backfilling your retaining wall. In order to do so, pull the geogrid hand-taut and secure the ends with the placement of staples, stakes, or by hand tensioning your geogrid until it is covered by 6 inches of loose fill.
F. The geogrid must be continuous throughout its embedment lengths. Splices in the geogrid strength direction are unacceptable.
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BACKFILL PLACEMENTA. Place backfill directly behind your drainage aggregate, spread and compact in a manner that will minimize
looseness in the geogrid.B. Place fill within the reinforced zone and compact in lifts not exceeding 6" to 8" (15 to 20 cm) (loose thickness)
where hand-operated compaction equipment is used, and not exceeding 12" (30 cm) (loose thickness) where heavy, self-propelled compaction equipment is used. Note: Only lightweight hand-operated compaction equipment such as a vibrating plate is permitted to function within 3' (1 m) of the back of the Monumental wall units. If the specified compaction level cannot be achieved within 3' (1 m) of the back of the Monumental wall units, replace the reinforced soil in this zone with drainage aggregate material.
C. Minimum Compaction Requirements for Fill Placed in the Reinforced ZoneWall Less Than 15' (4.5 m) High: Compact to 95 percent of the soil’s standard Proctor maximum dry density (ASTM D698) or modified Proctor maximum dry density (ASTM D1557) for the entire wall height.Walls 15' (4.5 m) High BUT NOT MORE THAN 30' (9 m) High: Change compaction requirements to 98 percent of the soil’s standard Proctor maximum dry density (ASTM D698) or modified Proctor maximum dry density (ASTM D1557) for depths below 15' (4.5 m).Walls Over 30' (9 m) High: Change compaction requirements to 100 percent of the soil’s standard Proctor maximum dry density (ASTM D698) or modified Proctor maximum dry density (ASTM D1557).Note: Increase compaction requirements for retaining walls with slope heights at the back of the reinforced soil zone greater than 5' (1.5 m) above the top of the wall. Verify compaction requirements with Project wall design engineer.
D. Utility Trench Backfill: Compact utility trench backfill in or below the reinforced soil zone to 98 percent of the soil’s standard Proctor maximum dry density (ASTM D698) or modified Proctor maximum dry density (ASTM D1557), or as recommended by the Project wall design engineer. If the height from the utility to the finishing grade is higher than 30' (9 m), increase compaction to 100 percent of the standard Proctor density or modified Proctor density.Note: Utilities must be properly designed (engineered) to withstand all forces from the Monumental wall units, reinforced soil mass, and surcharge load, if any.
E. Moisture Content: Within 2 percentage points of the optimum moisture content for all wall heights.F. These specifications may be changed based on recommendations by the wall design engineer.G. At the end of each day’s operation, slope the last level of compacted backfill away from the interior (concealed)
face of the wall to direct surface water runoff away from the wall face. The General Contractor is responsible for ensuring that the finished site drainage is directed away from the Monumental wall. In addition, the General Contractor is responsible for ensuring that surface water runoff from adjacent construction areas is not allowed to enter the Monumental wall area of the construction site.
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CAP UNIT INSTALLATIONA. Apply adhesive to the top of the cleaned surface of the unit below and place the Monumental cap unit into
the desired position.B. Cut the Monumental cap units if necessary to obtain the proper fit.C. Backfill and compact to top of the Monumental cap unit.
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CURVE/CORNER INSTALLATIONA. Convex and Concave Curves
Place the Monumental Blok units on the leveling pad so there are no gaps between the two faces of the Monumental Units used.When building multiple courses on a curve, begin installation by placing a Monumental Blok in the middle of the curve, centering on two Monumental blocks directly below it. Build the Monumental wall from the center block out.Place the Monumental caps and measure the distance of the gap between the caps. Using this measurement cut the Monumental cap so it is parallel with the adjacent Monumental cap unit. Slide the Monumental cap in place so that it is flush with the adjacent Monumental cap unit.The minimal radius obtained with the Monumental Blok is 14' (4.25 m). For each row of block you need to add 3" (75 mm) onto the final radius. (Ex: 10 rows or 30" (750 mm) of Monumental Blok will result in a minimal radius at the base of the wall of 16.5' (5 m) and will end up with a 14' (4.25 m) radius at the top row of your wall.)
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Monumental BlokInstallation (continued)
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B. Outside 90 Degree CornerWhen building a Monumental wall with an outside 90-degree corner, it is recommended that the construction of the Monumental wall start at the corner desired and work away from this point in both directions. The placement of the Monumental corner blocks will allow a normal batter consistence in both wall directions. One standard Monumental corner block will be used at the corner of each row of your wall. The Monumental corner blocks will overlap each other at the corner, coming together in a “zipper fashion”. The Monumental corner blocks should be glued at the corner where they overlap with a concrete adhesive.
C. Inside 90 Degree CornerWhen building a Monumental wall with an Inside 90 Degree Corner, it is recommended when you reach the base row inside corner, that you start each subsequent row at the corner and lay out from the corner. Repeat Step #2 on building an outside 90 Degree Corner.
D. Railings/Guard RailsIt is possible to install a railing at the top of the Monumental wall by core drilling into the top of the Monumental Bloks. Follow the instructions of the railing manufacturer and wall design engineer. It is, however, recommended that if the railing is to be installed at the top of the wall, glue the top two rows of Monumental Bloks to the rows of Monumental Blok beneath it with a concrete adhesive. In addition, guardrails can be installed behind the block.
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GEOGRID INSTALLATION IN A CURVE/CORNER APPLICATIONA. Convex curve
1. Trim your geogrid (geosynthetic reinforcement) to fit onto the curved face of the wall and place your geogrid with the curve to follow its contour.2. Overlapping layers of geogrid on a convex curve requires a minimum of 4" (10 cm) of overlap between them for proper anchorage. Repeat for successive specified geogrid layers.3. Place the geogrid to the length specified by the wall design engineer.
B. Concave curve1. The strength direction of the geogrid (geosynthetic reinforcement) must be placed perpendicular to the wall face; align the cut geogrid sections so that it follows the contour of the concave curve. Geogrid layers should not overlap. The desired length of geogrid should be specified by a wall design engineer.2. The next successive geogrid layer must be placed to cover the area of reinforced soil below. This will maximize lapping. Repeat these steps for successive specified geogrid layers.
C. Outside 90 degree cornerOn an outside 90-degree corner it is important the geogrid (geosynthetic reinforcement) layers overlap 4" (10 cm) at the corner for proper anchorage. Repeat for successive specified geogrid layers.
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FINAL TOUCHUpon the last row of Monumental Blok and capstones, overlap the geotextile towards the wall totally covering the 3/4" (20 mm) clear crushed stone (drainage material). Earth, grass, mulch, and any other desired product could be used to cover the remainder of the back fill. The back fill must be manually compacted and it is recommended that a gully be created in order to channel water towards the 3/4" (20 mm) clear crushed stone. For all other applications such as concrete or asphalt situated behind the wall, it is a requirement that you compact the 3' (1m) behind the Monumental wall with a lightweight compacting plate at 6" (15 cm) intervals.
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NOTESBased on NCMA design methodology the calculation doesn’t take in account the global stability of the wall being built. The correct application of any design is the responsibility of the user and should be verified by an engineer.For security purposes a safety rail or net must be installed securely onto your Monumental wall for the security of the wall installers.When building a Monumental wall over five feet all persons working around the perimeter of the wall must be securely harnessed. All methods and installation guides provided by Techo-Bloc are only industry recommendations and should not be construed to be an engineer’s specification. A local wall design engineer should engineer all retaining walls.
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sahara260022
riviera260025
Röcka
Units: 8 units per palletWeight/pallet: 2800 lb (1270 kg)
