Cerana Limited, trading as Enviromesh, was launched by Neil

Initially trading was in the United Kingdom only but in the last 3 years, has seen growth in the overseas markets for retaining structures, acoustic walling and river and coastal defence.Development of rainscreen and cladding systems in the UK have become a major part of the business in the last few years where high quality construction is required for architectural applications.

Cerana Limited, trading as Enviromesh, was launched by Neil Holmes and Roger Farmer in December 2006 in conjunction with WTB Group of companies.

WTB Group has a annual turnover of £350 million with depots and offices in the UK, Ireland Dubai and Australia.

Enviromesh specialises in Gabion design and Manufacture.

The welded mesh is manufactured to the highest standards both in Tensile Strength, Weld strength and coating weights, backed with a British Board of Agrement certification recognised worldwide.

ENVIROMESHGARNER STREET BUSINESS PARK, ETRURIA, STOKE-ON-TRENT, STAFFORDSHIRE, ST4 7BH, UNITED KINGDOM

TEL +44 (0) 845 136 0101, FAX +44 (0) 845 136 0202, web: www.enviromeshgabions.comemail: [email protected], [email protected]

Registered Office:Unit 5,The Cobden Centre, Folly Brook Road, Emerald Park, Emersons Green, Bristol BS16 7FQ Registered in England No. 5065615

Home page

http://www.enviromeshgabions.com/�

mailto:[email protected]�

Welded mesh gabions are available in mesh aperture 75.00mm x 75.00mm and in various specifications to suit the required applications.Gabion 39 system

Rectangular box shaped units either 0.45m or 0.975m highAvailable in 3mm, 4mm and 5mm wire diameters

Gabion 27 systemRectangular box or trapezoidal shaped units either 0.675m or 0.975m high

Available in combination of 3mm and 4mm for high quality structures

Rainscreen, Cladding, gabion fence unitsRectangular box shaped units either 0.675m or 0.975m high

Available in 4mm for high quality architectural applications

Enviroslope gabionsFor construction of sloping embankments as a reinforced earth structure or a mass gravity structure, either stone or soil faced.


Welded

mesh

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GABION 39 SYSTEM-(Standard Gabions)

Gabions manufactured from dimensionally stable panels of mesh, that are formed by welding transverse and longitudinal wires at each and every intersection to form a grid.

The gabion box is then part assembled by hinging the face, back, sides and internal diaphragms to the base panel and the lid to the rear panel with ‘C’ rings or clips. The units are transported to site flat packed with lacing wire as standard for on site erection.


Gabion

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GABION 27 SYSTEM-

Gabion 27 System, are modular welded mesh units introduced into the UK market by Roger Farmer to improve the quality, speed of installation, as well as to reduce the walls sectional design requirements. This combination of benefits, result in savings on labour costs, overall material supply and associated earthworks.

The Gabion 27 System comprises of units that are sub-divided into 675mm cells along the length of the cage. Construction is such that the base of the gabion forms the lid of the unit below. The base is extended by fixed dimensions on one face to allow for a predetermined stepping arrangement at each course. The base on the other face is flush, allowing for a flush faced wall to be constructed if required or coursing with a combination of flush and stepped faces.


Gabion

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GABION CLADDING-

Gabion cladding units are a welded wire mesh box system that is configured in a different way such that the unit is sub-divided into cells both horizontally and vertically, allowing each course of cells to be filled. Normally the course lift is 675mm high but for overall heights that are not a multiple 675, the cell height at the base can be manufactured up to 0.975m in height or the top cell reduced in height providing it is not less than 150mm.


Welded

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Gabion

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ADVANTAGES OF GABIONS-

Gabions are a simple product not requiring skilled labour.

Local stone or crushed concrete used for infill

No special plant or tooling required

An environmentally acceptable method of construction

Easily adaptable on site to suit variations in dimensions


Advantages

of

ASSEMBLY SYSTEMS

LACING WIRELacing wire is supplied as the standard jointing system on Gabion 39 System. It is supplied in catch weights of either 5kg, 20kg or 25kg coils depending upon the wire specification.The wire is used to continuously lace the panels/units together and also to form the windlass ties within gabions to support the mesh face.


Assembly

sy

HELICALS-Helical connectors are supplied as standard on the Gabion 27 System for all vertical joints and with lacing wire supplied for all horizontal jointing. Helicals can be supplied for Gabion 39 System at additional cost.The helical forms the strongest and most consistent method of jointing. The helical also serves to encompass the cut ends of the mesh wires to reduce the probability of snagging where gabions are used in public areas.

PRE-FORMED CORNER OR CROSS TIES-

Wire corner ties are an alternative to the internal windlass ties that traditionally have been used in gabions and undertaken using lacing wire.

Corner ties are supplied as standard for the Gabion 27 System but are also used on cladding as cross ties.

GABIONS FOR BUILDINGS


Gabions

architec

In recent years gabions have been used more and more in architectural applications:-

As free standing perimeter walls

As cladding to buildings

As storage buildings

As rain screens

As a building in its own right

The following gives examples where gabions have been used structurally for buildings and an overview of the proposal for buildings in Haiti



Gabions

architec

Classroom of the future

Double skin gabion trapezoidal walls with an internal membrane for weather proofing



Gabions

architec

Boat House

Single skin gabion trapezoidal walls, no requirement for weatherproofing.



Gabions

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Earth Centre Doncaster

Double skin gabion trapezoidal walls, with weatherproofing.Internally gabions are visible.The structure is 1 and 2 storey and also acts as a retaining wall to support the sloping hillside.

METHODS OF CONSTRUCTION


Methods

of

cons

DESIGN OF BUILDINGS BASED ON STRUCTURAL STABILITY BY VIRTUE OF THE MASS OF THE GABIONS

Gabion buildings based on mass design require a large wall width to provide stability, being a flexible structure they can accommodate settlements.

Normally the walls are trapezoidal in shape, either on both faces or one face inclined and the other vertical. Ideally the inner face should be vertical.

Openings for doorways and windows require a lintel support for the gabions above.

The specification for the mesh should be a 4mm or 5mm wire diameter on a 75mm x 75mm mesh. Corrosion protection should give a minimum of 50 to 70 years life in a dry land application, Enviromesh gabions have a British Board of Agrement certification on manufacture and durability to this effect.

Foundation requirements depend on the founding soils and nature of the buildingGenerally two possible foundations can be used

Compacted granular fill – minor settlements may occur

Concrete foundations where any possible settlement would be of concern



Methods

of

cons

DESIGN OF BUILDINGS BASED ON STRUCTURAL STABILITY BY VIRTUE OF A COMBINATION OF THE GABION MASS AND INTERNAL SUPPORT POSTS

Gabion buildings based on a thin gabion skin with internal steel posts/frame to provide stability.

Normally the walls have a rectangular section.

Openings for doorways and windows require a lintel support for the gabions above this

The specification for the mesh should be as for a mass solution.

Foundation requirements depend on the founding soils and nature of the buildingGenerally two possible foundations can be used

Compacted granular fill for the wall section with the posts set into concrete in the ground – minor settlements may occur between posts.

Gabion beam set into the ground as a foundation, posts with a base plate set below the founding gabion – minor settlements may occur between posts.

Concrete strip foundation with posts bolted to the concrete foundation



Methods

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PROTECTING AGAINST THE ELEMENTS

Gabion are free draining therefore unless weather proofing is not required an impermeable membrane should be incorporated in the design section.

As the mesh can have sharp edges at the edges of the panels the membrane must be protected to prevent puncher, This is achieved with a non woven geotextile on the inner and outer faces of the membrane. This protection will also prevent puncher of the membrane by the gabion fill.

To incorporate the membrane in the gabion wall the wall requires an inner and outer leaf of gabions with the membrane sandwiched between the leafs ensuring a linkage between the inner and outer leaf that does not compromise the protection, this requires a modified manufacture of the gabions.

The alternative is the outer leaf being gabion with an internal timber stud walling with the membrane between them.



Methods

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450

675

2700

or 2

325

70mm x70mm RHSwith 300mm x300mm baseplate andspigot bracket for fixing100mm x 100mm RHS beam

geotextile/impermeable membrane/geotextilebarrier

225 wide gabion to inner faceof wall

225 wide gabion to outer faceof wall

675x675 foundation gabion

geotextile/impermeable membrane barrier675

100mm x 100mm RHS beamfor fixing roof members to



Methods

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ROOFING

The design of the gabion walling must also allow the positive connection of the roof to the walls.

For mass designed structures the roof form must be tied into the gabion to resist wind loadings. This is best achieved using a vertical tie down into the gabion mass.

For post supported wall a horizontal member can be fixed to the posts to take the roof form.

OPENINGS

For door and window openings a method of connection is require to the gabion this is normally achieved by incorporating a timber member within the gabion so that the door or window frame can be secured to the walls.

SERVICES

Water, electricity services can be ducted within the gabion or through the gabion in plastic ducting.


Plan

of

ho

Plan of house


Foundatio

Gabion foundation


Foundatio

Concrete foundation


Elevation

of

Elevation of house


ROOF

OF

HO

Roof of house connected to the horizontal SHS beams secured to gabion support posts


finish

Enviromesh provide a free desk top design service backed with over 50 years of experience in the design and manufacture of gabion systems for architectural, landscaping and civil engineering systems.

For further information please contact

CARL HAMER, CEO AND PRESIDENTPotad International Consultants, LLC

1280 Clinton Avenue Irvington, NJ 07111

Phone: 973-609-9995Haiti Office Number: 01150936966578

Email: [email protected]

Cerana Limited, trading as Enviromesh, was launched by Neil

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