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Piano Wall™ combines a precast retaining wall and safety barrier in a single engineered unit. This unique solution was developed for projects that require a five- to ten-foot-high-reinforced earth wall incorporating a traffic barrier. The use of Piano Wall speeds up highway construction and reduces cost on projects requiring low-grade separation between opposite roadways or between a roadway and the adjacent non-traveled area. Installation rates of Piano Wall average 170 linear feet of barrier and 1,700 square feet of Reinforced Earth retaining wall per day. Piano Wall provides a seamless transition to higher reinforced Earth walls or abutments being constructed on the same project
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TechWall® is a precast counterfort retaining wall system. TechWall retaining walls are an effective solution when site conditions preclude the use of reinforcing strips such as severe right-of-way restrictions, utility conflicts, pile foundations and roadway widening. Unlike conventional cast-in-place concrete structures, TechWall combines the inherent advantages of a precast concrete system with the traditional benefits of a counterfort design. Construction follows a simple, rapid and predictable method. Precast panels are placed atop a cast-in-place shear key, a footing is poured on top of the key, and structure backfill is placed and compacted. This unique system saves cost and construction time.
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Designed to provide a cost-effective, versatile solution for a wide variety of earth retention and material storage uses, Tarmac Precast's retaining wall units are available in a range of standard, 1m wide units, from 1m to 3.75m high.
Technical information:
- Designed for specific loading conditions
- Simple, rapidly installed dry construction
- Easy to handle, using minimal labour
- Makes full use of available land
- Loading on either or both faces
- High-quality factory production
- Improved efficiency of stock yards and factories
- Easily demounted and reused
- Has a wide variety of uses
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Veil supporting height 1 m for sealing in sole concrete realized on the building site.
Stone front face proposed in 3 colors: dark, gray gray clearly and ocher.
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Process RENFOTER MODULE® allows the realization of retaining walls in solid mass reinforced reinforced concrete facing.
It concerns the technique of the reinforcement of the grounds by not very extensible and flexible reinforcements (Standards NF P 94220-0 and 2) and of the recommendations and code of practice "the works out of reinforced earth".
The wall in reinforced ground is consisted of association:
- of a facing of modules prefabricated out of reinforced concrete any height or superposable,
- of a solid mass of fill set up by layers,
- reinforcements connected to the facing and narrowly overlapping in the embankment.
The facing is made of juxtaposed and superimposed rectangular modules.
The heights of the modules are adapted to the project.
The aspect of the facing is studied with the request: gray concrete smoothes, brushed, sanded, stamped concrete (standard matrix hones, rock,...), tinted concrete and other architectural treatments.
The reinforcements are out of hot galvanized steel fabrics, of form and size adapted to each project.
Fields of application: current retaining walls, carrying abutments, walls out of cut, walls staged.
Advantages:
- Adaptability with the poor subgrades thanks to the flexibility of its facing,
- Increased Security: the modules out of reinforced concrete and are ribbed
- Speed of implementation
- Economy: simplicity of implementation, current filling material, in the respect of the Recommendations of Setra.
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Retaining walls in L or T, standard length in 1,25 or 2,50 m and height 2,50 m with 8,00 Mr.
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Retaining walls in L or T (series 300 and 600 particularly adapted to the déchèteries), length 2,00 m, 2,5m, 3,00m with 6,00m and height 1,20 m with 2,75 Mr. Pose faster, more esthetic (less unite)
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JUMA Beton is the specialist in the manufacture of WORK OF PRECISION out of precasted concrete.
JUMA Beton produces all kinds of work of precision out of concrete smoothes, gray and this as well for the industrial premises, nonresidential construction, residential construction like for the construction of roads.
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Retaining walls in L or T, standard length in 1,25 or 2,50 m and height 2,50 m with 8,00 Mr.
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Walls of storage in T height 3,00 to 5,00 m and length 1,25 or 2,50 Mr. Allowing STORAGE DOUBLES FACE. With the length 2,50m, poses faster.
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Agricultural wall of storage out of prefabricated reinforced concrete, height 2 m or 2,50 m length 1,25 Mr.
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PRECASTING OF PANELS
The panels are made of reinforced or prestressed concrete.
Precasting is done in an industrial process; manufacturing of heavy panels of 40 tonnes is commonly achieved.
Whenever possible, the precast factory is installed on the site. If this is not feasible, the panels are brought on trailers from an outside precasting yard.
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Various types of equipment can be used, depending on the ground conditions and the project: kelly-mounted or hang grab, KS 3000 or Hydrofraise. The widths can vary from 0.52 to 1.52m : standard widths are 0.62, 0.82, 1.02 m.
Depths of 35 to 50 m are commonly achieved. The Hydrofraise can reach 150 m.
Operations generally proceed with adjacent primary and secondary panels.
The length of panels may vary from 3 to 20 m : 5 to 6 m is the common average size.
JOINTS: In most cases, use is made either of stop-end casings or Stopsol-type joints which are withdrawn once concreting of the primary panel is completed or CWS-type joints with lateral withdrawing. With the Hydrofraise, it is also possible to dig short secondary panels with the cutters biting in the concrete of the adjacent primary panels, thus making a direct concrete to concrete joint.
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Continuous reinforced concrete core walls are vertical walls made in spans of up to 7 metres in length and thicknesses between 0.45 and 1.50 metres, and depths of up to 70 m, and offer a solution to excavation difficulties in urban areas or around the water table level.
To install core walls in the ground, mechanically-driven grab buckets are used with weight ratings of between 5 and 23 Tons and grab openings of between 2.60 and 4.20 metres. This type of grab bucket can be adapted to practically any type of soil and depth.
To install core walls on rocks, excavation techniques and plant is used for thicknesses of 0.60, 0.80, 1.00 and 1.20 metres and depths of up to 60 metres.
They are used in a large number of projects (bearing structures, provisional or definitive retaining walls, etc.) and represent a solution to different problems such as the excavation of buried structures such as underground car parks and basements, subways, etc., to the creation of subsoil waterproofing in loose material dams.
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MAIN APPLICATIONS
-Major urban excavations in the aquifer
-Underground reservoirs or access shafts to deep sewers
-Open or below grade trenches :
highways
railways
underground railways
-Deep, load-bearing foundations :
linear X or H-shaped supporting
walls to lower high loads
retaining walls
MAIN PLANT USED
-Cable-operated grab :
width from 520 to 1520 mm
mounted on standard or hydraulic crane
-Hydraulic grab with Kelly :
guided and equipped with inclinometer controlling verticality
possibility of correcting verticality with the so-called "active grab"
-Hydraulic cutter
used in hardened ground
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Circular access shaft, diaphragm wall diameter: 58m,
thickness 1 m, depth: 21 m.
Cutoff curtain 60 m deep (29,000 m2).
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The CDW (Continuous Diaphragm Wall) system is based on equipment that allows cutting a slot in the soil by means of a cutting module, and its immediate filling with concrete. The cutting module has the thickness and the length as set by the project.
The wall installed through a continuous working cycle (excavation and filling) and therefore - thanks to construction times that are thoroughly active - industrial productions are considerably higher compared to those obtained by means of traditional techniques.The particular system adopted to discharge the waste material, which is not polluted with the presence of mud, contributes in making the whole working area extremely clean.
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Definition:
reinforced concrete wall moulded in the ground where the excavation (typical 2,8m with 8,5m) is held open using a purée containing bentonite
Characteristics:
thickness of the wall 0.5m, 0.6m, 0.8m, 1m, 1.2m and 1.5m
standard depth until 35m, exceptionally until 55m and more
sealing waterkering wordt gegarandeerd door een dubbel waterstopvoegprofiel
vertical capacity bearing non-negligable
length of the panel is equal to either once the length of the hook or approximately 2.5 times the length. The length of the hook is approximately 2.8m with 3.3m (standard of hook).
low walls guides necessary
it is necessary to envisage place for the bentonite power station (100m ²)
considerable joists of installation of the building site
traditionally not of continuous horizonteaux reinforcements in the slurry trench walls: beam of distribution in head necessary.
Scope of application:
wall retaining the grounds and water
resumption of the vertical efforts
excavations along the existing buildings
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