Refer to 7431 DRAINAGE COMMON REQUIREMENTS for general matters

Refer to 7441 GROUNDWATER DRAINAGE for sub-soil drainage

Refer to 7461 FOUL WATER DRAINAGE for waste/foul water drainage

Refer to the general section 1233 REFERENCED DOCUMENTS.  The following documents are specifically referred to in this section:

Plumbers, Gasfitters and Drainlayers Act 2006

Manufacturer's and supplier's documents relating to this part of the work:

Marley CONNECTO™ Sales Brochures

Marley CONNECTO™ Product Catalogue

Marley CONNECTO™ Installation Guide

Manufacturer/supplier contact details

Provide an installer/applicator warranty:

• When installed to Marley's published installation instructions at time of installation.
• Provide this warranty on the installer/applicator standard form.
• Workmanship warranty to be issued separately by the installer
• Commence the warranty from the date of practical completion of the contract works.

Refer to the general section 1237 WARRANTIES for additional requirements.

Drainlayers to be experienced, competent and familiar with the materials and techniques specified.  Carry out all work under the direct supervision of a certifying drainlayer under the Plumbers, Gasfitters and Drainlayers Act 2006.

Meet with the territorial authority drainage inspector to confirm the drainage layout in relation to site conditions.  Confirm changes resulting and seek written site instruction before carrying out any work.

Before starting work check on site the drainage layout, dimensions, levels and invert levels and ensure that line, level, falls and cover are correct.

Substitutions are not permitted to any of the specified Marley systems, components and associated products listed in this section.

Refer to Marley New Zealand Limited for technical support for trench hydraulics, grate performance hydraulics, run layout and scheduling, ponding analysis and information on the chemical resistance of the trench and grate materials.

All work to comply with NZBC E1/AS1: Surface water, 3.0 Drainage system materials and construction.

Marley CONNECTO™ Slim, an interlocking modular surface drainage system manufactured to DIN EN 1433.  Grate material uPVC (grey) or stainless steel with a uPVC base.  Available in 3 ranges and sizes - Standard, Pedestrian and Stainless Steel.

Components include:

• Stainless steel side rails
• Vertical outlet 100mm
• End cap/outlet 100mm
• Access pit - polypropylene base
• Aluminium grate for access pit
• Polypropylene grate for access pit

Refer to SELECTIONS for options.

Marley CONNECTO™ Medio, an interlocking modular surface drainage system manufactured to DIN EN 1433.  Grate material polypropylene, stainless steel, galvanized steel or cast iron, with polypropylene base.   Available in 4 ranges and sizes - Standard, Stainless Steel, Styled Galv and Cast Iron.

Components include:

• Stainless steel side rails (applies to Standard and Stainless Steel range only).
• Vertical outlet
• End cap/outlet
• Access pit - polypropylene base
• Aluminium grate for access pit
• Polypropylene grate for access pit

Refer to SELECTIONS for options.

Marley CONNECTO™ Max, an interlocking modular heavy duty surface drainage system manufactured to DIN EN 1433.  Grate material uPVC (grey), galvanized steel or cast iron with polypropylene base.  Available in 3 ranges and sizes - Standard, Galv and Cast Iron. Components include:

• End cap/outlet 200mm
• Vertical outlet uPVC

Refer to SELECTIONS for options.

Specific ground conditions or contaminated ground may require an increase in the concrete surround dimensions or the addition of reinforcement.

Marley CONNECTO™ surface drainage channels cannot be trafficked until fully installed. During site work and after the trench run is laid, route site traffic away from the trench.  If temporary crossings are required lay base course of minimum 1 metre wide either side of the trench for protection.

All work to AS/NZS 3500.3: Plumbing and drainage - Stormwater drainage and Marley CONNECTO™ Installation Guide.

Excavate trench to accommodate drain system.  Excavations must be made about the centre line of proposed drainage run and pit. Trench must be big enough to accommodate the channel/pit width and depth dimensions and the concrete surround dimensions. Excavate the trench base to roughly follow fall of trench run.  Ensure loose material is removed from trench and base is compacted before pouring concrete.  Maintain free of water and free of all falling material.

Run string line, or laser at finished surface level along the full length of the proposed trench run to ensure the top of the trench drainage run is installed on the correct grade.

To excavated trench, provide concrete support for the channels either by patty supports or the hanging method.  Refer to site installation manual.  Position and level the channels to fall.  Install trench channel drains and pits complete with grated covers, to the manufacturer's requirements.

Marley CONNECTO™ grated trench drain systems must be encased in a concrete surround.  A minimum concrete compressive strength of 25 MPa to NZS 3104 is recommended for the concrete surround.  Refer to the standard installation drawings for minimum dimensional requirements for the concrete surround.

Install Marley CONNECTO™ surface drainage system complete with grate or plywood sections to brace the channel.  Pour concrete evenly either side of trench ensuring concrete is not poured into the drain by wrapping grates in plastic or bracing with plywood.  If more than one pour is cast for the concrete surround, they must be adequately bonded to each other.  This is for structural continuity.

Remove all grates and remove plastic covering or masking tape.  Remove debris from the trench drain and clear outlet pipes.  Install rubbish baskets in pits if required.  Flush trench run to check for pipe blockages.  Replace grates and secure.

Where channels are installed in suspended slabs, seal all channel joints and pipe connection joints with a proprietary sealant.  Sealant must be resistant to the same chemicals and be flexible to allow for movement.

Connect grated trench drainage system to stormwater drain to the requirements and satisfaction of the network utility operator.

Clean and flush out the whole installation and remove all silt and debris before handing over.

Replace damaged or marked elements.

Leave the whole of this work discharging completely and freely into the stormwater system and free of all debris.  Leave work to the standard required by following procedures.

Remove debris, unused materials and elements from the site.