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Table of Contents
1. Introduction 2
2. Reference 2
3. Health & Safety Hazard 2
4. Definition 2
5. Responsibilities3
6. Method to be employed 4
a) Typical Installation of safety line 5
b) Typical opening and Removal of Safety Fences 5
c) Typical Loading Materials to the Floor 5
d) Typical Unpacking of Panels/Pallets and Distribution 6
e) Survey Setout Marks and R.L’s 7
f) Setout and Positioning of Steel Brackets 7
g) Panel Installation 7
h) Panel Insulation 7
i) Smoke flashing 8
j) Trade Clean 8
k) Final Clean 8
7. Description 8
8. UCW Installation Sequence 10
9. QAQC Procedure 18
10. Manpower requirement 19
11. Material Requirement 19
12. Tool and Equipment Requirement 19
13. Health and Safety Provision 19
14. Supporting Documents 19
15. QAQC Procedure 19
16. Distribution 19
17. Attachment 20
18. ITP 21
19. Risk Assessment 22

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1.0 INTRODUCTION
The intention of this method statement is to provide with a basic understanding of the
construction methods and associated safety procedures to be adopted on this project. This
document is intended as a working document and as a result will be subject to amendments
where products, materials or methods change to improve the quality of our product and the
safety of our work site. Amendments may be made to improve the efficiency or practicality of the
producers provided that safety is not compromised.
The curtain wall is a unitized system fabricated and glazed in the factory with high performance
glass structurally glazed into an aluminum frame. Insulation is incorporated into the panels at our
factory and is enclosed between the external glass spandrel and the galvanized steel internal
backing sheet.
2.0 REFERENCE

1.1 Material submittal

1.2 Shop Drawing
1.3 Project Specification: 084423 & 088000

3.0 HEALTH & SAFETY HAZARD

Specific safety measures will be followed as applicable, and all the safety measures are covered
separately in the project safety plan and as per attached manufacturer’s materials safety data sheets.
4.0 DEFINITION

Sub-contractor - SKYWALL Aluminum

Main Contractor - Oriental Enterprises (OE)
Consultant - MZP W.L.L
Client - Qatar General Insurance & Reinsurance Co.
MS - Method Statement
QCS - Qatar Construction Specification
PD - Project Director
CM - Construction Manager
TM - Technical Manager
SE - Site Engineer
QAQC Engineer - Quality Assurance/Quality Control Engineer
HSE - Health & Safety Environment

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5.0 RESPONSIBILITIES

5.1 Project Director

 Request External services and equipment.

 Perform all operation activities required by the scope of work.
 Verify materials take off in respect of contract requirements.
 Verify request and optimize them in respect to existing capabilities made available assets.
 Responsibilities of the PD related to HSE are included in the HSE section.
 Co-ordinate equipment mobilization.
 Control quality of delivered items and delivery schedule.

5.2 Construction Manager

 CM is overall responsible for the implementation of this method statement. The progressing
works are carried out according to the planned program and all the equipment’s required to
execute the works are available as per the project planning and are in good condition.
 Co-ordinate with the Consultant, Project Manager, Site Engineer, Safety officer,
and Sub-contractor for the safe and proper execution of the work.
 Specific attention to all safety measure and quality control in co-ordination with
Safety officer and QA/QC engineer and in line with HSE plan and Quality plan.

5.3 Site Engineer

• Provide all necessary information and distribute the responsibilities to his
construction team.
• Ensure and monitor that the work progress is in accordance with the required
program of works and report the same to the Construction Manager.
• Co-ordinate with the Safety Officer to ensure that the works are carried out in a
safe working practice.
• Co-ordinate with the QC Engineer for the tests to be carried out (if required) and
initiate for the inspection for the finished works.
• Ensure the implementation of any request that might be raised by the Consultant's
Representative.
• Monitor the work of the waterproofing construction.
• Pass all the revised information to the Foreman and ensure that, it is being carried
out properly.

5.4 QA/QC Engineer

• Ensure that all the works are carrying out as per the specification, drawings and the
related quality procedure.

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• Inspect and verify to ensure the work is completed and satisfied, prior to requesting for the
Consultant's approval.
• Maintain inspection and test records complete for any future reference.

5.5 Safety Officer

• Ensure the implementation of all safety measures in accordance with the HSE plan
and everybody aware before or during the implementation of project.
• Ensure all the implemented safety measures are adequate to maintain the safe working on the
site.
• Inspect all the site activities and train the persons to prevent any accidents occur and
proper reporting to the project manager and the client representative.
• Ensure that the site is maintained clean and tidy.

5.6 Foreman
• Carrying out the work and the proper distribution of all the available resources in
coordination with the Site Engineer on a daily basis.
• Daily reports of the works achieved and coordinate for the future planning with the
Site Engineer.
• Incorporate all the QC and Safety requirements as requested by the concerned
Engineer.
• Met with any type of unforeseen incidents or requirements and reporting to the Site
Engineer immediately.

6.0 METHOD TO BE EMPLOYED

Sequence of Work
The sequence of work will be as follows:
f) Typical Installation of safety line
g) Typical opening and Removal of Safety Fences
h) Typical Loading Materials to the Floor
i) Typical Unpacking of Panels/Pallets and Distribution
j) Survey Setout Marks and R.L’s
l) Set out and Positioning of Steel Brackets
m) Panel Installation
n) Panel Insulation
o) Smoke flashing
p) Trade Clean
q) Final Clean

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6.a TYPICAL INSTALLATION OF SAFETY LINE

Installation of the curtain wall requires our curtain wall fixers to work outside the safety fence to
carry out a number of activities. The risk of falling from the slab edge is the major safety risk
associated with the installation of the curtain wall. To minimize this risk to workers outside the
safety fence a safety line is installed on each floor. The safety line is installed at the back of the
rectangular columns as shown on the floor plan.
The safety line is installed by the main contractor to the engineer’s specification by practicing
riggers. If curtain wall fixers must work outside the safety fence they must wear an approved full
harness attached to the safety line via an approved lanyard.
6.b TYPICAL OPENING AND REMOVAL OF SAFETY FENCES
Due to the fixing requirements of the curtain wall, in some instances it will be necessary to leave
some safety gates open or remove the gate altogether whilst work is carried out, such as for the
use of floor cranes and the maneuvering of panels off the edge of the building. If the gate is to be
left opened or removed for work to be carried out the area will be bunted off with flags. The
safety fence must be reinstalled before the workers leave the area and at the close of work each
day work. If the type of work does not require the safety fence to be left open, such as survey
and bracket installation, the safety fence is to be closed after the workers have hooked into the
safety line.
In an area is enclosed by the installation of curtain wall, and then the perimeter fence does not
need to be reinstalled. It may be ended at the next section of uncompleted curtain wall. The
sections of safety fence not required any more will be stacked neatly on the floor they were
removed from.
6.c TYPICAL LOADING MATERIALS TO THE FLOOR
At our factory, completed panels will be inspected and packed to a defined sequence, over the
special A-frame truck. The panels are fabricated with steel and hardwood bases and the panels
are stacked onto the frame with the suitable spacing materials. The completed pallets are then
covered in shrink wrap to provide adequate protection during transport and storage of panels on
site. The frames are braced to resist transport and lifting loads. The frames and spacers are
reusable; these are dismantled apart and packed for return to our factory for recycling.
Semi-trailers will be used to transport the panels directly from the factory to the site. Panels are
lifted from trucks by builder’s crane crew using nylon slings. The panels are positioned on the
landing platform so that the panels can be wheeled into the ground girder.
The panels will be placed in the pre-arranged storage location over the ground girder, so as to
minimize the impact on other trades working on the ground floor. The storage locations are to be
in an area where damage by other trades is eliminated. Similarly we will require other trades to

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place their materials in prearranged positions so that we can gain access to the perimeter of the
girder to lift the UCW’s. Flashings and brackets will also be stored on the floor for use on the
curtain wall. These will be delivered in boxes/pallets suitable for handling by the crane/man hoist
to the floor/s.
At the end of the ground girder track, there will be a lifting basket which will accommodate 04
UCW’s per lift. The panels then will move to the floor where to be installed according to the
sequence and as per the installation matrix.
6.d TYPICAL UNPACKING OF PANELS/PALLETS AND DISTRIBUTION
Unloading of the pallets and distribution of the single panels to the work area is done with the
assistance of a Gantry Girder & forklift (if required). Using this device reduces the risk of back
injury to the workers performing this task. The panels are positioned on steel with timber based
trolleys with wheels for easy distribution to the work area.

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6.e SURVEY SETOUT MARKS AND R.L’S

Our surveyor checks the grid lines on every fourth floor. On these floors an offset line is placed
across each major elevation so that our fixers can accurately measure the position of the bracket
and set the edge of mullion position.
Relative Level’s (RL) and Elevated Level’s (EL) are checked on each floor and any discrepancy
with the builders marks will be advised by the builder. Any penetration covers moved to allow
survey of the building must be replaced as soon as practical and the end of each day’s work.
6.f SETOUT AND POSITIONING OF STEEL BRACKETS
The setout crew positions the bracket and installs a temporary restraint to the bracket. The clamp
prevents the bracket from falling from the slab edge while the bracket is packed and plumbed.
The position of the bracket is then repacked and a mark permanently placed on the bracket, by
means of a small cut in the top of the bracket with a hack saw, which identifies the edge of the
male mullion. The curtain wall fixers must wear a full harness connected to the safety line via a
lanyard while outside the safety fence. On the floors that our surveyor has checked and at the
top and bottom of each wall the brackets area accurately set from the grid lines and offset lines
with the use of string lines.
On the intermediate floors the brackets for the corners are plumbed in position and the
intermediate brackets set with a string line and a spirit level for a plumb at the face bracket.
6.g PANEL INSTALLATION
The aluminum and glass façade panels will be installed with customized lifting devise. All lifting
devises have been submitted to the work cover authority and have been certified by an
independent practicing engineer. While working outside the safety fence all workers must wear a
full harness clipped to the safety line.
Each panel has its gross weight written in the gutter head transom of the panel. This allows the
panel crew to check that the safe working load of the lifting equipment that they are using is not
exceeded. This reduces the risk of accidents caused by overloading by the lifting equipment.
It is desirable that the commencement of panel installation occurs at the commencement of
elevation of the project. This can be achieved by the use of a spandrel/vision frame at the
commencement of the curtain wall. This will avoid the need for a kicker frame it is also difficult
and costly to “come back” and install curtain wall panels in a reverse sequence.
6.h PANEL INSULATION
The insulation in the curtain wall panels is factory fitted to the panels. The mineral fiber insulation
is fully sealed within the panel behind the backing sheet installed to the spandrel area of the

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panel. As the insulation in enclosed behind the backing sheet (alum foil) there is no need for the
curtain wall fixer to wear protective clothing to protect from mineral fibers.
6.i SMOKE FLASHING
The smoke flashing is installed at the floor level. The typical smoke flashing is assembled to the
required depth to accommodate the, then it is squeezed as specifies and then inserted into the
gaps between the concrete slab and the aluminum spandrel panels.
6.j TRADE CLEAN
Frames, glass and work area shall be trade cleaned prior to leaving the area at completion.
Trade marks such as Logo’s or Company stickers, excess sealants, pen or pencil marks shall be
removed prior to hand over.
6.k FINAL CLEAN
The final clean will be carried out by the Main Contractor who will employ specialist cleaners
using the building maintenance unit once this is commissioned and in accordance with its
operating instructions given by the contractor responsible for the design and installation of this
device.
7.0 DESCRIPTION

(UCW PANELS)

7.1 RAW MATERIALS INSPECTION IN HOUSE.

1. All incoming raw materials (alum profiles/sheets) has to be checked / inspected according to
the specification, shape, wall thickness, visual defects, color and coating thickness etc.
2. All incoming glass to be checked for the sizes, orientation of the double/ step/edge and visual
defects etc.
3. All incoming gaskets to be checked with the die drawing and project specifications as well the
visual defects.
4. All steel brackets/shadow boxes/back pans/rock wool etc. to be inspected with the project
specification, wall thickness/color/sizes and the visual defects etc.
7.2 FABRICATION AND ASSEMBLY PROCESS
All fabrication and assembly of UCW panels will be held in GWS premises. Approved materials
receive from the store as per the request and will move to the protection applying area, after film
spread on will pass to cutting and machining zone. Most sophisticated CNC machines and
experienced technicians will do the process of cutting and machining with tagging of barcode
labels for proper identification. During all process random and samples will inspected by the QC
and recorded based on ITP with approved shop drawing or relevant documents. All transoms

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edges will seal with silicone before assemble it, as well all screws heads will be sealed with
silicone and tooled. All ironmongeries and EPDM gaskets will be installed during assembly
before it move to bonding station.
7.3 BONDING PROCESS
The frames will cleaned accurately specially the bonding area with MEK prior for proper
bonding, and glass bonding area with IPA. The silicone combination will be checked by QC
inspectors for butterfly, pull out for hardness test and Glass bonded with structural silicone
Proglaze II with most sophisticated silicone pump (Reinhardt Variostar 450)on frames, will be
moved to cooled area for staking horizontally 30 hours for curing.
7.4 PACKING AND DISPATCH PROCES
After final inspection and approval from QC at our factory, completed panels will be re inspected
and packed to a definite order with defined (PM) plans. The panels are located on fabricated A-
Frames with steel and hardwood bases, the panels are stacked onto the frames (with the
support of candy lever crane) the suitable spacing materials to protect them from scratches or
damages. All delivery notes will be along with signed and approved check lists of the separate
units. Packed panels will be loaded on the trailer with proper supervision.

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8.0 UCW INSTALLATION SEQUENCE

8.1 PRE-INSTALLATION ACTIVITIES PROCESS

Set up, coordinate and agree with the main contractor all site logistic for item such as;

 Material deliveries.
 Delivery schedule.
 Intermediate material storage facilities on floors (to be agreed)
 Parking facilities on site for trailers, etc.
 Personnel hoist (provided by the main contractor) for the lifting of staff or worker up and down of
the tower.
 Storage area on the floors for panels & main store for loose materials/equipment.
 Agree/establish site communication with Skywall installation personnel
Set up and agree with the main contractor the “Release” and “handover” procedures required
ahead of the installation activities. The procedure that we will implement and work as follow:
 As soon as the main contractor is satisfied that the required floor on the tower is sufficiently
advanced to enable our “Pre-installation check” to be carried out, and as soon as the required
floor is clear, Clean & safe for our installation work to commence, the main contractor will
“Release” the area to us in writing. Include with this “Release will be the coordinates & values for
the setting out control points & level (bench marks) to each of the floors included with in the area
release.
 Skywall will then undertake a visual inspection or “Pre-installation check” of the preceding works
in order to identify the MC any items that would prevent the installation of our works. We will then
carry out a dimensional survey or survey check of certain elements of the structure interfacing
with our works.
 Following our survey checks, the main contractor will have a period to rectify any discrepancies
noted as soon as possible (if there). During this period, Skywall will commence with the deliveries
of curtain wall brackets and elements to the floor. Following completion of the MC’s remedial
works they will “handover” the floor. Writing, to confirm that our installation works may start.
Please note that the sequence & timing of the “Release” & “handover “of the floors to Skywall is
critical for the completion of the works within the specified program constraints. An early
“Release” of the first few installation levels of the tower will assist in the regards.
 Prepare & deliveries to site, access & installation equipment’s required for the start of our
installation activities, material & activities required to be carried out include, amongst others.
 Pallet trolley’s special access platforms, hoist motor with monorail for curtain wall elements
installation.

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8.2 SITE SURVEY

Prior to any installation activities on site, all should start with accurate survey works & layout. A
request for a joint survey from the general contractor is initiated. Initial inspection of the area shall
be conduct in coordination with the main contractor’s survey team to determine the control point
and bench marks used by the main contractor in locating the gridlines, which is going to be the
basis of the layout plan for the curtain wall. The survey prepared by the general contractor
contains the building benchmarks which are necessary in laying out the location of embedment
and brackets.

 A reference gridline and elevation marks shall be established by Skywall survey team starting
from the reference point turned-over by the main contractor, preferably at the starts floor. These
mark shall be distributed to the succeeding floors and would be the basis in setting out the
required curtain wall panel elevation and in & out for each floor. During the course of the survey,
a joint survey between the main contractor and Skywall shall be performed to settle any survey
discrepancy at the earliest stage possible. Actual dimension of the building perimeter and floor to
floor height shall be verified that the condition stated in the foregoing general requirements do
exist. In case of considerable variation from the pre-set condition were found, it shall be reported
to the main contractor for immediate rectification. Adequate survey equipment will be provided,
maintained and calibrated on a regular basis by Skywall for all survey activities on both towers.
 We will identify to the main contractor in writing any items that become apparent that would
prevent the installation of our works. We will also install our secondary control or offset points (If
and as required) which will consist of a serious of permanent control station that are established
to create a loop around each floor adjacent to the façade. Please note that Skywall must install
our secondary control from main contractor’s reference point while the floor is clear, clean and
safe in order to established a loop around each floor adjacent to the façade i.e. after the main
contractor has cleared the floor and before our access equipment is erected on the survey floor
or our material are delivery to the floor.
 Based on the secondary control points the Skywall survey team will mark each bracket position
and installed one “key bracket” at each wing which will be used by the installation teams as a
reference to install and level all of the remaining brackets.

8.3 Storage of Sealant/Water Proof Membrane/EPDM Glue/Gasket

Such items shall be delivered in boxes either from the factory or directly from the supplier. It will be
checked in accordance with the specification. It will be stored in a twenty-four hour air condition store
under controlled temperature.

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8.4 Handling

All Unitized Curtain Wall panels should be complete ready for installation. Each panel will have a
numbering corresponding to location on site and as per the tower panel’s matrix. All exposed
aluminum shall be covered with protective tape to avoid surface damage to the finish. All aluminum
components shall be delivered on site in crates; each crate will have a number to indicate location on
site, and shall be hauled immediately on the designated tower to where it shall be installed.

A sufficient number of lifting hoists will be provided in order to mitigate any effect on the construction
program.

Generally all materials and aluminum accessories will be delivered from Skywall factory to the site
at ground floor, with a few minor exceptions for material such as insulation which will deliver to the
storage floor directly from the suppliers.

From the allocated unloading point at ground floor and based on the above unloading details, the
crates with the panels/elements will be shifted on trolleys on the ground floor designated girder lift to
move to the installation area.

Demo on the handling of UCW panels

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1. Ground floor offloading area, Panels moving on the gantry girder towards the lifting
basket located 800mm from tower Skelton.

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2. UCW panels are pushed manually and upon the numbering/tagging of each panel,
towards the lifting girder, the lifting girder basket will accommodate 04 UCW panels, the
panels will be shifted up to the designated floor, where there will be a monorails will
hook into the panels, to distribute them to the installation location.

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3. The lifting girder/s will be fixed in the corners of each tower, allowing the faster
distribution of the panels over the elevations towards the installation location.

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4. Lifting girder basket with the UCW panels, also the moving panels on the monorail
towards the installation location.

8.5 Access Equipment’s for Unitized Panels Installation

 Before any installation or lifting works begins, a life line/fixed barrier should be installed along the
perimeter of the active area. All installer must attach their safety belts on to this life line/barrier in
order to prevent any accident or unwanted fall from the building. The installation of the panels will
be carried out by mobile hoist and lifting Beams.
 The building will be divided into stages for installation as per program and the monorails will be
erected at site every 11th floor as agreed with site team and in according to the program to achieve
access to the required floors.
 Install the monorail railing along the façade of the building having a distance of at least 600mm from
the edge of the slab for concrete wall.
 The railing shall be connected to a cantilever steel channel which is anchored onto the slab or
reinforced concrete wall using anchor bolts.
 A lifting motor will be attached and in the process of installation. The lifting motor will slide freely
along the rail, following any sequence of installation.
 Independent Testing agency will be tested the monorail in each location after erection and test
certificate will be submitted to main contractor before installation starts in that area. (Before any
installation or lifting works begins, Tool box talk will be conducted by safety supervisors and makes
sure life line installed along the perimeter of the active area).

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 The rail design will have double rail, as one will be used for hoist and another one for cradle.
 All installer must attach their safety belts on to life line in order to prevent any accidents or
unwanted fall from the building.
 Prior to the start panels installation, the Supervisor will inspect the installation of the brackets to
ensure that they are completed i.e. lined, leveled and torque. Ensure availability and condition of
hoisting outriggers, winches and lifting frames. Replace item as necessary
 Shift and distribute panels on the floor to the installation areas.
 Inspect and prepare all safety equipment’s and all lifting equipment’s.
 On the closed concrete walls; brackets and panels fixing will be assisted by the installers in a
cradle prepared on the same area to aid and ascertain engagement of aluminum edges and
brackets.

8.6 Brackets Installation (Post Fixing)

 Prior to the programmed bracket installation, prepare the area and provided and set up safe working
platforms in the floor level below
 The curtain wall elements will be installed in one direction, floor by floor except at the hoist infill areas.
 Deliver brackets to the work place.
 Follow the preapproved safety plane during the brackets installation.
 According to the layout, defined point location & bracket design coring process will followed to create
through holes as approved design.
 Fixed bracket according to the approved layout and section drawings. Adjust position and level
according to survey marking and key bracket.
 Tighten all bolts to the required torque using calibrated torque spanner in accordance with the
installation drawings.
 Supervisor to record and confirm that the bracket has been fixed correctly using an internal quality
checklist form for each floor level.
 Quality checklist recording successful bracket installations are to be retained on file in the Skywall
main contractor form site office. Work Inspection Request will be completed and issued to the main
contractor for their action.
 Ensure minimum edge distance and spacing is provided. Reducing the edge distance and spacing
reduces the strength of the fixing.

Panels Installation

8.7 Installing Panels at the Open Area (Slabs)

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 As per the development design for Skywall, the unitized panels will fit slab to slab as one unit while
hanged from the bracket at the upper side by lower-side active stack joint.
 The panel’s fin will be installed as per approved detail and drawings. The panel will be hanged from
the upper side bracket using D-Shackles & steel wires.
 After arrival of lifting basket with the floor panels, the panels will be delivered to the designated
installation point, by the monorail hoist.
 Remove any protection tape and safety barricade at the floor where panels are in installation.
 After arrival to the installation point, the fabricators will start lowering down the UCW panel by the
hoists to the bracket location.
 Once the panel reached the final location the safety lifting belts will be removed prior start the
engagement process.
 The engagement process of the panels will starts and done carefully to ensure fitting all gasket and
parts.
 After the final engagement and adjustment; D-shackles will released and the hoist will be shifted by
using the monorail to prepare for the next panels installation.
 Check panel alignment after installation and correct vertical position if required.
 For the installed panel, water sealing Sliding screen will be installed and connected to the rail.
 The installation direction/sequence will be zone/floor and bottom to top.
 Survey and record exact level of panel header on the Skywall quality checklists for each panel.
 We will complete and retain quality checklist on file in the site office.
 Work Inspection will be completed & issued to the main contractor for their action.

8.8 Site Rectification (Site Remedial Operation)

Site rectification to the finished of components will only be carried out with the Architect
approval and on those elements of the works.
Such remedial measures will be carried out on small localized areas at the surface only.
Where significant surface damage occurs to clip cover or cladding panels which have been
incorporated into the facade, such components will be removed and renewed.
Remedial paint measures will be carried out strictly in accordance with the approved paint
supplier instruction and recommendation to this project.

9.0 QA/QC Procedure

9.1 Before Installation, the following documents shall be reviewed and studied to ensure all
quality requirements have been satisfied.

• Approved Method Statements

• Current revision of relevant Project Specification, Drawings.

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• Approved Material Submittal

• Approved Applicator
• Materials' Technical & Safety Data Sheet

10.0 Manpower Requirement

 Charge Hands /Technicians
 Skilled labours

11.0 Material Requirement

 Site Survey Equipment.

 Cradle
 Tower crane
 Chain Block

12.0 Tool and Equipment Requirement

 General Hand Tools

 Drill Machines & Drill Bits
 Glass Suction Pads

13.0 Health and Safety Provision

 All necessary personnel protection equipment’s such as safety shoes, overall, safety goggles,
helmet, safety harness, etc. will be provided and worn.
 Housekeeping of the area will be maintained on daily basis.

14.0 Supporting Documentations

This Method Statement should be read in conjunction with the below referenced
documentations.
 Approved Material Submittal and Catalogue.
 Approved Shop Drawings
 Project Quality Plan.
 Project HSE Plan.

15.0 Distribution
Copies of this method statement have also been issued to the following for information/
Action/comments:

 Project Director
 Construction Manager

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
 Technical Manager
 Project Site Engineer
 HSE Officer
 QA/QC Engineer

16.0 Attachment

 Checklist
 Inspection & Testing Plan
 Risk Assessment

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ITP

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Risk Assessment

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