Bordeaux Walling. Product & Technical Information

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1 Product & Technical Information BORDEAUX WALLING Piece Piece Piece Block Block Block Block Pins No. per per Height Length Width Weight Layer Cube (kgs) / Yes / Yes / Yes / Yes / Yes / Yes APPROXIMATELY 0.4M 2 WALL PER LAYER APPROXIMATELY 2.0M 2 WALL PER PALLET A B PETITE BORDEAUX WALLING Piece Piece Piece Block Block Block Block Pins No. per per Height Width Depth Weight Layer Cube (kgs) A / No B / No C / No C D E * Can be used in the vertical orientation as a Jumper Block D / No E / No APPROXIMATELY 0.15M 2 WALL PER LAYER APPROXIMATELY 1.5M 2 WALL PER PALLET GENERAL PRODUCT INFORMATION When building with the Bordeaux product the units can be oriented in two different positions. For retaining walls, either the open or closed positions will work. For parapets, columns, pilasters, etc., where the wall face can be seen from more than one side, the closed alignment position should be used. When using the open position, be sure that drainage aggregate (10mm - 14mm crushed stone) is used to fill in the gap and restrict the flow of retained soil. Each unit has sets of 3 alignment holes (front, middle, back) to allow walls to be built at near vertical, 9.5 batter (setback) or the occasional random unit pulled forward by 25mm for aesthetic variation. Place a single pin at each set. retained soil side drainage fill (300mm) The receiving channel on the bottom surface of each unit connects over the pins from the course below. Walls can be built with positive mechanical connection in 90 corners, curves and straight wall geometry without loss of connection or strength. The closed channel end at the unit bottom allows for finished end aesthetics on 90 corners, pilasters and wall end conditions. As required for pin interlock, remove the solid closed end of the receiving channel. Remove only if pin from unit below strikes this area. closed end of receiving channel open alignment closed alignment finished wall side 56

2 Product & Technical Information Design notes For low Landscape Retaining Walls (non structural), Bordeaux Walling can be constructed as a non-reinforced gravity wall as shown in the chart (to the right). This chart shows the maximum wall heights that can be achieved for the three most common soil types, in the Vertical and 9.5 o Batter orientations. Low Landscape Retaining Walls (Non Structural) SOIL TYPE SAND/GRAVEL SILTY SAND Level Grade ** 600mm VERTICAL 900mm 750mm 9.5 BATTER Max Surcharge* 3 to 1 Level Grade ** Max Surcharge* 3 to 1 750mm 600mm SILT/LEAN CLAY 300mm 600mm WALL TYPES * Max Surcharge = Maximum Slope back from the top of the wall. ** Level Grade = Ground is level back from the top of wall. (300mm) (300mm) cap (75mm) cap (75mm) (300mm) No Surcharge/ Level Grade cap (75mm) 9.5 +/- No Surcharge Level Grade (0.6m) max. MIN. Base Leveling Pad Height Varies Backfill Drainage Material Base Leveling Pad Height Varies Backfill Drainage Material Base BASE Leveling LEVELLING Pad PAD Free Standing Border Wall Gravity Wall - Vertical Gravity Wall - Battered max. (2.7m) max. (2.7m) max. (2.7m) FIBREGLASS pins for interconnection and alignment FIBREGLASS 130mm long 32mm shoulder length 13mm diameter at pin shaft 20mm diameter at shoulder Interlocking connection and alignment pins are made from high strength pultruded fibreglass. Minimum short beam shear strength is 44n/mm 2 *near vertical wall Centre Pin Position Rear Pin Position 32mm radius max (2.7m) max 9' (2.7m) max (2.7m) radius Note: Wall geometry with 90 0 corners or serpentine curves is necessary for stability and resistance to overturn (see plan view example). Units are glued and pinned for a mechanical bond. OPTIONS: If increased height of free standing wall is required, utilise the centre core of the large units to receive rebar and grout. The unit cores can be aligned vertically and horizontally. Under this option, use a reinforced concrete footing for connection of rebar from vertical wall. Consult a qualified engineer for reinforced details 130mm random projecting units as desired Option: Front hole position allows for intermittent and random use of pulling a unit forward to create more natural variation and offset to the wall face. The centre pin position will build a wall in the near vertical position. Always pull units toward wall face to engage pins as final construction step when placing units. Using this pin position on all courses will build the wall with an approximate 9.5 batter (setback). This is a 25mm setback for each 150mm of vertical wall. 57

3 Product & Technical Information 1. Prepare the Base Levelling Pad Remove all surface vegetation and debris. Do not use this material as backfill. After selecting the location and length of the wall, excavate the base trench to the designed width and depth. Start the levelling pad at the lowest elevation along wall alignment. Step up in 150mm increments with the base as required at elevation changes in the foundation. Level the prepared base with 150mm of well graded, fully compacted granular fill (c804/c803). 2. Install the Base Course Place the first course of Bordeaux Walling units end to end (with front corners touching) on the prepared base. The long groove (receiving channel) on the unit should be placed down and the three pin holes should face up, as shown. Make sure each unit is level - side to side and front to back. Levelling the first course is critical for accurate and acceptable results. For alignment of straight walls, use a string line aligned on the unit pin holes for accuracy. Minimum embedment of base course is 150mm below grade. 3. Insert the Fibreglass Pins Place the fibreglass pins into the holes of the Bordeaux Walling Units (note: place one pin only per each grouping of 3 holes). Place pins in the middle hole for near vertical alignment or the holes nearest the embankment for a 9.5 +/- setback per course. According to wall requirements and design, the front pin hole (towards the face of the wall) can be used randomly to allow a forward projection of a specific unit for accent and variation in the wall appearance. 4. Install Drainage Fill, Backfill and Compaction Once the pins have been installed, provide 10-20mm crushed stone drainage fill behind the units to a minimum depth of 300mm. Fill open spaces between units and open cavities/cores with the same drainage material. Proceed to place backfill in maximum 150mm layers and fully compact with the appropriate compaction equipment. 5. Install Additional Courses Place the next course of Bordeaux Walling units over the fibreglass pins, fitting the pins into the long receiving channel recess of the units above. Push the Bordeaux Walling units toward the face of the wall until they make full contact with the pins. If pins do not connect with channel but align in open core of upper unit, place drainage fill in core to provide unit interlock with pin. 6. Capping the Wall Clean off the last course of Bordeaux Walling in preparation for the cap or coping to finalise the wall. With units dry and clean, use construction adhesive (suitable construction adhesive) or mortar for a mechanical bond. Install the Bordeaux Walling 75mm capping unit, architectural precast concrete or cut stone as a coping element. Cap may be flush or overhanging as required by aesthetics and design. CAPPING/COPING OPTIONS Universal Cap: This 75mm high concrete unit has three sides textured allowing the units to have any of the three sides as a finished face for straight and curved application. The 300mm depth face to face of the universal cap allows for a 25mm overhang or shadow effect over each side of the Bordeaux Walling one. For battered walls the overhang can be increased to 50mm on the exposed side of the wall or the overhang can be eliminated if desired by pushing the cap back flush with the wall plane. Use suitable construction adhesive or sand cement mortar to secure caps in place. VERTICAL UNIT ORIENTATION A creative design option is to occasionally place units vertically in the wall to provide a break of horizontal lines. To span two 150mm high courses, use the unit with the 300mm length. Because the fibreglass pins do not interlock in this position, use suitable construction adhesive to fasten this unit in place. Make sure the unit above the 300mm vertical piece spans beyond the 150mm width of the vertical unit, resting on the units at each side. unit above vertical unit spans to bear on each side vertical units 300mm 150mm 58

4 Design Details PATTERN & APPEARANCE Rule of Thumb for bond pattern between courses: Construct the wall using the units as they come off each shipping pallet. Randomly utilise the various unit shapes trying to avoid a repetition of same unit size frequency along a horizontal line (some unit repetition is unavoidable). Avoid stack bonding of unit joints (vertical joint line between adjoining units) for more than (2) courses vertically. If some units seem to have a blemish or too much texturing in a specific area, orient them so the blemish faces the soil side of the wall to hide imperfections or use these units along the wall base. Avoid stack bond conditions where more than (2) courses create weak areas in the wall. STAIR/STEP DESIGNS Bordeaux Walling can be used on your stair/step projects with the following considerations. Provide the same material at the stair/step foundation as used on the Bordeaux Walling wall levelling pad. Fully compact levelling pad material. Note: adding cement can provide the additional benefit of firming up this area in a cemented soil composite. Double stack the base support units to create a foundation for the stair tread units. Use pins and construction adhesive as required for a unified stair/step assembly. treads: cut 300mm cap depth to 275mm to allow 25mm overhang at nosing (225 mm) nosing (25mm) 75mm cap units at wall beyond 275 mm leveling BASE LEVELLING pad PAD grade line double stack stair support unit fasten tread securely with adhesive or mortar grade line 250 mm STEPPED FOOTING (Levelling Pad) Levelling pad options: Well graded, fully compacted, granular fill (c840/c803) Non-reinforced concrete (15ni) Levelling pad thickness: 150mm ± Always start wall at lowest elevation of site location where wall is to be constructed. Build step-ups in levelling pad to match concrete unit thickness. When using nonreinforced concrete for the levelling pad option, it is very critical that the step-ups match the Bordeaux Walling unit thickness! With a concrete levelling pad, there are few options for correction if the step-up is built higher than the unit height. 150 mm bordeaux unit step up grade sloping grade level grade in 150mm Lifts note: maintain a miinimum (1) unit of base course buried or H/20. EMBEDMENT Unit embedment below the grade line shall be a minimum of one unit buried, under all conditions, along with a general provision of H/20 (wall height divided by 20) for total wall embedment of taller walls. Note H=total height of wall from top of base levelling pad to top of wall. Consult a qualified engineer for sloping grade conditions in front of wall or steep slopes and surcharges on top of wall. Deeper embedment may be required in areas prone to surface scouring due to run-off water flowing along the grade line, or in areas where freestanding walls are desired and frost depths require deeper foundations. 59

5 Design Details STRAIGHT WALL When developing the wall design and layout with corners, offsets, pilasters, etc., use the following guidelines. Due to the units being 300mm deep it is best to work in increments of 300mm for geometry offset Shown above are two layers of Bordeaux Walling using all the pieces per layer. This layout is typical of what is required to build a wall in the stretcher bond configuration. i.e. no vertical joints directly above the lower vertical joint. To continue the wall, replace the end blocks with different size units and continue pattern. Bordeaux Capping using all pieces in a layer. CORNERS & L RETURNED Corners are a natural part of your creative design. All Bordeaux Walling units are capable of being used in a 90-degree corner due to having one end square and three sides textured (with the exception of unit no. 3 which has only two sides textured) Large units should be used at corners to achieve greater strength through overlap and interlock with units above and below Much the same laying pattern can be used to form L Return Ends, which offer stability and strength to resist overturning forces at the termination end of a free standing wall. 3 1 PIERS & PILASTERS Similar to the L Return End wall detail, the column corner utilises a 600mm x 600mm column geometry to develop an integrated pier at the end of a running wall. This detail offers visual aesthetic as well as provides strength at the termination end of the freestanding wall Course 1 Course 2 Course 4 Course 3 Course 1 Units at columns turned 90 to course below for interlock strength Course 3 Course 2 60

6 Design Details CURVES The Bordeaux Walling design makes it easy to construct a variety of serpentine curves. Convex and Concave curves will add gentle grace, beauty and strength to any installation. The minimum radius that can be built using the random pattern of units without cutting or using disproportionate amount of the smaller units is 1.8m. To build smaller radii, a large proportion of smaller units and some cutting may be required. Note: Retaining wall curves can be built in both convex (outward) and concave (inward) layouts using the near vertical or 25mm setback options For freestanding walls, always build in the vertical position. When units are exposed on two sides in a freestanding or parapet wall, select the proper unit layout that provides tight closed-end conditions for all units to avoid a gapped look on either side. WALL OFFSET Wider wall geometry provides greater strength to parapet wall to resist overturning. Offset allows for graceful changes in wall direction Offsets are an opportunity for aesthetic geometry and landscape feature areas. When considering freestanding wall conditions of any height, the designer must consider the requirements of geometry and internal reinforcing to resist overturning. Reinforced footings/foundations depth must be considered to provide support and bearing as applied to soil and frost conditions. Due to the variable nature of each site situation, a qualified engineer should be consulted for appropriate design in accordance with the building codes. The design details shown on these pages are for concept representation only and are not intended to represent final design. Consult a qualified engineer for specific design considerations. Course 1 Course 2 Overlap/versus stack units for extra strength PETITE BORDEAUX WALLING Petite Bordeaux Walling is just as versatile as its big brother. Walls can be built straight, curved or slightly battered to retain small flowerbeds. Each unit is 300mm wide, units A, B, C, and E have three sides textured with one side smooth and angled to give flexibility in producing curves. Unit D has two sides textured and is rectangular in plan. The unit height is 75mm and can be built to a maximum of six layers producing a wall high. Shown here are two layers of Petite Bordeaux Walling using all the pieces per layer. This layout is typical of what is required to build a wall in the stretcher bond configuration. i.e. no vertical joints directly above the lower vertical joint. To continue the wall, replace the end blocks with different size units and continue pattern. C B A A B C D E C A B E C D B E C A Petite Bordeaux Walling is built dry with no pins or mortar. When using Petite Bordeaux Walling for free standing applications it is recommended to use the adhesive on the capping layer and a minimum of 75% of the remaining units through the wall. For retaining wall application use the adhesive to keep the capping layer in place if required. 61