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Glazing and Cladding Method Statement

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The purpose of this method statement is to define correct practices for GI Cladding of Ductwork & Pipework.

By implementing the guidelines in this method statement the contractor shall ensure that the job execution complies with the project requirements and serves the intended function to satisfactory level.

Overall project manager is responsible for implementation of this procedure during the GI cladding installation activities.

Below is list of necessary tools and equipment for cladding works:

Aluminum Sheet and accessories shall be in line with the approved material submittal.

Material Handling & Storage

On receipt of the material at site, shall be off-loaded carefully at site using necessary manpower and required equipment to ensure that no damage is caused to the materials, necessary precautions shall be taken for unloading, shifting & storage.

All material packages reaching to site shall be identified as per package list.

Aluminum or GI sheets will be checked to ensure that it complies with the approved material submittals in terms of make, thickness etc.

Any discrepancies and damage found will be notified and reported for further action, as per project documentation and procedures.

Site Engineer ( HVAC/ Plumbing ) has to ensure that the material used at site are free from any damage or deformity of any kind.

Material found not suitable for site use will be removed immediately from site and the same will be replaced by correct material.

All packages shall be stored under protected dust area.

INSTALLATION PROCEDURE FOR CLADDING OF DUCTWORK & PIPEWORK

All external ceiling voids and plant room, duct & water piping shall be cladded as per approved drawings and submittals.

Aluminum sheets of approved type, quantity and thickness are cut as required and rolled in the rolling machine to give rectangular / cylindrical profile and to form the longitudinal and circumferential groove.

Slip the rolled aluminum profile on to the insulated duct / pipe. Care shall be taken to ensure no damage happens to insulation.

Match the longitudinal grooves of the rolled profile and join by Aluminum pop rivets / stainless steel screws as applicable.

The screw / rivets sizes shall be optimum, so that they do not pierce the insulation.

Fix the successive cladding and match the rectangular / circumferential groove of previous cladding and fix screws / rivets.

All longitudinal and circumferential joints are properly sealed by sealant.

All valves, strainer NRV, flexible joints, pumps etc. are laded by de-mountable boxes to allow maintenance access.

Care shall be taken to ensure, the cladding surface is free from damages, scratches, dirt etc.

Cladding shall be firmly fixed on the duct / pipe.

After completion of installation of cladding works inspection request shall be raised for consultant approval.

ATTACHMENTS

Method for Aluminum Glazing / Cladding Works

You can perform the work for the installation of Aluminum Glazing Cladding Works & Accessories as per the simple steps given below.

Ensure work areas, all floor slabs, parapets if any, are complete, clean and kept clear from all trades prior to start the glazing work.

Clearance request to be submitted before start of work in order to get clearance for the works.

Control points, benchmarks and datum lines will be prepared.

Aluminium Installation

Total station will be used to mark coordinates and auto level will be used for leveling.

Areas where aluminium will be installed, will be surveyed and checked to ensure squareness and plumbness  of concrete/ plaster for aluminium fabrication.

Support system in the form of brackets or angles and primary support will be installed with proper alignments.

Rockwool or other insulation, along with back pans, shall be installed at all spandrel areas.

Curtain wall frame and internal unit frames will be installed on site level and plumb, using aluminium shims or adjustable brackets to pack out any irregular areas of the concrete or block work.

Ensure squareness prior to start glass installation.

Aluminium Cladding Installation

Cladding sub-frames, angle runners must be installed with proper alignment.

Fix aluminium composite panels to the runners ensuring horizontal and vertical alignment.

Apply silicon to perimeter, panel joints, and terminal joints.

Backing rod will be used if necessary.

Glass Installation

Install pressure plates and covers, bar-closes or other fasteners to safely secure the glass in place.

Installation of hardware will be according with manufacturer’s instructions.

Sealant Application

Ensure the surface to be sealed is sound, dry, and free from any dirt or contaminants.

Joints and spaces to be sealed shall in no case be less than 6 mm deep or more than 12 mm deep, and should exceed 20 mm in width.

Joints will fill to within 10 mm of the surface with back up material.

After  completion of work inspection request to be raised and ensure its approval from the consultant.

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