What We Do
Find Well is a performance and service driven general contracting company with extensive management experience. We have solid strength in execution and management of large and small scale commercial and high end residential construction projects.
We began our business specializing in the application of Scaffolding during building constructions and Material on hire basses including Erection & Dismantling provider. As of today, we are capable to undertake any complex assignment at short notice. FTC has its own Scaffolding Cuplock System in Qatar employing 100 Experienced scaffolders and group of scaffolding Inspectors and Supervisors Specialized for Oil & Gas, Commercial and Residential Building and Infrastructure projects.
Precision, quality and service are what give us our good name and keep our customers coming back. FTC is a company to choose with confidence, knowing that our customer is receiving the highest quality and service in the industry and a knowledgeable staff that will get the job done right.
METHOD OF STATEMENT
SCAFFOLDING STRUCTURE
TOWER & INDEPENDENT SCAFFOLDING
TABLE OF CONTENTS
- Scope ………………………………………………………
- Purpose ……………………………………………………
- Objective …………………………………………………..
- Definitions …………………………………………………
- System Description ………………………………………
- Reference Law and Regulations ……………………….
- Procedures …………………………………………………
- 1 Pre-erection ……………………………………….
- 2 Erection …………………………………………….
- 3 Dismantling ………………………………………..
- 4 Transport …………………………………………..
- 5 Procedure Summary …………………………….
- Responsibilities …………………………………………...
- 1 Scaffolding Supervisor / Superintendent …….
- 2 Scaffolding Erection Foreman ………………….
- 3 Scaffolding Team Leader…………………………
- 4 Qualified Scaffold Inspector …………………….
This scope shall encompass the erection and dismantling of scaffolds in plants
& buildings for construction maintenance and painting purposes.
- PURPOSE
This method statement defines the standard work process for the erection,
inspection, control, and dismantling of scaffolds and in particularly of tower
scaffolds and independent scaffolding.
Towers are constructed with steel scaffold tube to provide a relatively small
working platform at height. They consist basically of standards laced together in
both directions with ledgers and transoms and braced on all four sides and at
every alternate lift in plan. They may be static or fitted with castors to make them
“mobile”. The maximum height to base ratio must be carefully controlled on
freestanding towers.
- OBJECTIVE
To maintain safe access to, and exit from every place at which a person may
work at height, so that all possible steps are taken to prevent falls of people and/ or materials, equipment, etc. by the provision of properly constructed access
scaffolds, with stable and fully boarded working platforms of adequate width,
fitted with toe boards, double handrails and provided with a safe and secure
ladder access.
4. DEFINITIONS
- Scaffold: a temporary structure of tubes, couplers, standard, ledgers boards and ladders which provides access on or from which persons work, or which is used to support materials, plant or equipment and its supporting structure.
- Tower Scaffold: this type of scaffolding is erected to fill in a void and provide coverage of and/or access to a limited area (within 1.5 m width) generally from the top working platform only. This platform then becomes a floor from which to work.
- Mobile Scaffold: mounted on castor wheels consisting of four or more standards.
- Scaffold User: any personnel whose work requires them, at least some of the time, to be supported by scaffolding in order to access the area of a structure where that work is performed.
- Competent Person: A Third Party Certified (TPC) person who is properly trained, qualified and has enough experience to carry out scaffolding works.
- Scaff Tag: A tag strategically displayed, normally at the access point to every scaffold that indicates that the scaffold has been inspected by a competent scaffold inspector within the previous seven (7) days and safe to use or defective and not safe to use.
- SYSTEM DESCRIPTION
The following systems will be utilized for the mentioned scaffolding works:
TUBE-COUPLER SYSTEM
Tube-Coupler System will be utilized only for compensations, anchorages and connections.
Couplers
Material: Steel grade S355MC UNI EN 10149-1 – Cold formed – High resistance
and ductility – 4.75-mm thickness
Protection: Hot-dip galvanizing, passivation – Min. coating thickness of 8micron
Tubes
Material: Steel grade S235JR and S355JOH
Protection: Surface protection – Hot-dip galvanizing with min. coating thickness
of 55 microns
Dimensions:
Outside diameter: 48.3 mm
Nominal thickness: 3.2 mm
Section: 4.53 cm²
Moment of inertia: 11.59 cm²
Section modulus: 4.80 cm³
Radium of inertia: 1.60 cm
6. PROCEDURES
- 1 Pre-erection
TECHNICAL DOCUMENTATION
The documentation described in the following sections must always be available at work site.
PROJECT
The project shall comply with the regulations of Qatar Construction Standards (QCS) and of the Project Site.
PERMISSION TO ERECT SCAFFOLDING ON SITE
All permit forms to install scaffolding will be submitted to the Client. Once permission is granted, Client concerned staff will be contacted prior to commencement of works (Client scope).
MATERIAL VERIFICATION
The quality and quantity of all materials to be used shall be carefully checked prior to use on Site.
SITE BARRICADES
Works will commence by barricading the scaffolding area and enough warning signs will be installed (Client scope).
PERSONAL SAFETY
All PPE equipment required by law and by Site regulations shall be available at the work site and utilized at all time by the workers.
These devices are:
Safety helmet, Gloves, Safety harness, Googles, Safety shoes, Safety Jacket & Overalls
A room or location should be set aside on the work site for first aid in the event of accidents. A first-aid kit must also always be on hand for immediate,
preliminary assistance in case of injuries.
MATERIAL SUITABILITY
It is a good practice on the work site to arrange for all parts of the scaffolding to be periodically examined to ensure that all is in working order.
Verifications shall concern:
- verticality of uprights to check the compliance with manufacturer’s declared dimensional tolerance
- welding of prefabricated systems
- painted or galvanized surface protection
- the tightening of coupling grips and the condition of bolts threads (all nuts must
always perfectly screw and unscrew)
- the planks metal clamp
- the straightness of utilized couplings: plastic deformations of any of the
element that comprises the system are not acceptable.
A compulsory check of the scaffolding soundness must be carried out after each major climatic event. This can also include materials that have not yet been erected.
STORAGE ON THE WORK SITE
An area on the work site should be set aside for proper storing the scaffolding material to facilitate movement and organize the loading and unloading of material in the best possible manner, thereby reducing operational costs and the risk of accidents that are a common occurrence in disorganized environments.
Materials shall be stored in appropriate containers and storage boxes.
- 2 Erection
Tower scaffolding requirements are confirmed with the work supervisor or client.
Must include: the area to be covered, where working lifts are needed; may also include but it is not limited to maximum possible bay width.
During the erection stage, the installation designs and prescriptions shall be strictly followed.
Main focused areas for installation procedure are the following:
STARTING OF THE SCAFFOLDING
The elements described below must be carefully verified and checked.
Scaffolding Bases
An outline of the scaffolding corresponding to the erection plan shall be marked off.
Maximum distance from the building (20 cm) shall be respected or, with the approval of the Site representative, approach planks to the façade or inner side guardrails shall be added.
Basement
Before laying the base jacks, a suitable basement shall be prepared with gravel and/or lean concrete in case of heavy loads. In general, wooden square-shaped bases shall be laid out under the base jacks.
Scaffolding Base Controls
The following guidelines shall be applied:
- do not use more than no. 2 levels of wooden bases under the base jacks
- rivet the base jacks to the wooden bases
- maximum recommended extension of 330 mm adjustable base jacks is of 200 mm; for higher extensions additional cross bracings might be required
- check the leveling and correct positioning of wooden bases
- check the correct distribution of loads at the scaffolding base
- verify the consistency, efficiency and proper positioning of the distribution elements located under the base jacks (wooden bases, etc.)
SCAFFOLDING STRUCTURE
Periodical checks shall be scheduled for the following:
Verticality of the uprights
The verticality of the uprights shall be checked periodically. Inclines other than those foreseen in the dimensional allowance designs of the system’s elements are not permitted.
In the event that uprights are not parallel to a plumb line, they shall be dismantled and erected again, if possible, or alternatively appropriate static verifications must be carried out to guarantee that the specific scaffolding is suitable to fulfill the requirement for which it was initially intended.
Anchorages
Anchorages shall be positioned every 22 square meters of scaffolding façade or, in special cases, in the number and in the positions shown in the erection plan. The information on type of anchorages, functioning, static verifications and checks to be carried out shall be provided together with the technical documentation.
Access Ladders
The rungs of the scaffolding ladders shall conform to the requirements set out by EN12811 standards: moreover, the following shall be checked:
- the type of ladder must conform to regulation requirements and to the manufacturer’s manual
- a protective guardrail shall be always installed
- the ladders shall be self-blocking and fitted with anti-slip transoms
Connections
The following shall be checked:
- Plugs: plugs shall be present and properly inserted in all joints and loose uprights, and in all items listed in the manufacturers’ manual
- Connection pins: connection pins shall be present and properly inserted in longitudinal tube joints when using the tube-coupler system
- Wedge couplings: in multi-level systems whereby wedge coupling connections are used, the correct insertion of the wedge into the node plate shall be verified before proceeding with the erection of the next element
Grip of the Joints
The correct grip of joints (6 daNm) shall be checked with a torque wrench of all structures or parts of particularly important structures such as:
- truss beams
- hoisting connections
- anchorages
Checks shall be carried out periodically, even while the scaffolding is in use, at intervals to be determined according to the use being made, but not longer than 2 months.
In any case, checks shall be carried out following a major climatic event.
Planks
The correct erection of planks shall be checked, as well as their prevention locks, using a suitable device.
Winches and Pulleys
When winches or pulleys – even temporary – are used, the parts of scaffolding affected by such equipment shall be verified.
The load capacity of the winch or pulley shall always be visible and adjustable. In the absence of specific information in this regard, the following formula may be used to determine the dynamic increment of the vertical load in suspension for carrying out correct static checks:
ϕ = coefficient of dynamic increase
V = speed of the load in movement expressed in m/sec
ϕ = 1 + 0,6 x V
PERSONNEL SAFETY DURING INTERMEDIATE ERECTION STAGES
In addition to the prescriptions stipulated by local regulations, attention shall be focused on the following main areas:
Scaffolding Workers
All scaffolding workers shall have valid Third-Party Certification (TPC).
The scaffolding safety plan shall report names and specific responsibilities of personnel involved in organizing the work and erecting the scaffolding.
Use of Personal Safety Devices
The correct use and efficiency of PPE shall be checked periodically.
Lifting of Materials
Following precautions must be taken:
- Check the load capacity, the type and the correct functioning of winch and pulley
- Organize the work in such a way that no loads are suspended above the heads of workers installing the equipment
- Check that the load capacity of the bay on which the raised material is stacked
Overlapping of Personnel
Organize the erection teams in such a way that they are never positioned one above the other on the same part of the scaffolding.
Use
While works are in progress the scaffolding may undergo structural modifications due to the particular requirement of the work site not considered during the planning stage.
Scaffolding shall be verified as follows:
Overloads
In the event the end user requests unusual overloads, notices indicating the load capacity shall be positioned on the scaffolding and compliance of the assembled structure to the project design shall be verified.
Passive Security Elements
Periodical checks shall be carried out to ensure that passive security devices have not been removed from the scaffolding; these include:
- overhead and frontal guardrails
- frontal and overhead toeboards
Planks with trapdoors shall be shut if not in use.
The anchorages shall never be removed.
Machinery present on the scaffolding
Unless otherwise prescribed, boring machinery, vibrators, compressors and whatever else could affect the stability of the scaffolding shall not be used.
In the event the job requires such type of machinery, the load dynamic increase shall be taken into consideration.
Earthing
The presence and the type of earthing present on the scaffolding shall be calculated in accordance with the regulations in force. Documentation relating to the machinery on the scaffolding shall be always checked and brought up to date.
- 3 Dismantling
During dismantling, as during the erection stage, all precautions required by the regulations in force relating to safety equipment shall be taken.
Following areas shall be checked.
Removal of passive safety devices
- When dismantling the scaffolding floor by floor, check that in the transitory stage, and after removal of the protective guardrails, no workers are present on that floor or at least that they are adequately protected with safety belts, lifting and auxiliary cables on rigid parts of the structure such as during the erection stage
- During partial dismantling of the following piers, check that guardrails and the head toeboards are always reassembled.
- Removal of dismantled material from the scaffolding shall always be organized in a closed and safe manner. Storage of materials on the scaffolding shall always be avoided.
Anchorages
- Floor anchorages shall only be disassembled after dismantling of the overhead structure
- Always check that all the time - including the dismantling stage of the scaffolding - no portions are higher than 4 m above the level of the last anchorage
Storage
Set aside and display items which have been damaged or deformed.
All dismantled materials shall be stored and organized by categories, tied in bundles or packed to facilitate loading and transport.
- 4 Transport
Transport shall be organized as per the previous phases, paying attention to the
following areas:
Supply
Transport shall be staggered so that only the materials that are strictly necessary during the erection stage are on hand, thereby avoiding excessive stockpiles within the worksite.
Check the size, the holding capacity of the delivery area as well as the rate at which the scaffolding is being erected.
Materials
Check the correspondence between the projected supply quantity, the materials present on the worksite and those listed on the delivery notes.
Returned Materials
Returned material shall be organized in containers by planks, tubes and accessories so that the best use is made of available space and the number of journeys is kept to minimal.
- 5 Procedures Summary
- Permit to be issued before work commences.
- Materials delivered to site.
- Barriers to be placed around the area where the scaffold will be erected.
- Commence with the erection of scaffold.
- Base lift or kicker lift to be erected 200mm from the ground and leveled it in the appropriate manner.
- Then the second/next lift will be erected.
- Then braces will be installed prior to the placing of boards.
- Ladder shall be used in going up the completed board lift/platform.
- After the boards have been put in place, handrails, toe boards and other scaffold materials (i.e. ladders, ties & façade braces to appropriate locations) shall be fit in.
- After completing the platform, the next level will process in the same manner with the above procedure “b” to “e” until the job is completed to height.
- Scaffold inspected and approved before use.
- All excess materials to be removed or contained.
- When all works are completed on the scaffold and the contractor gave a request for removal, the scaffold shall be dismantled under the same safety procedure. The procedure in dismantling the scaffold shall be the opposite of the erection procedures. The last piece of scaffold material that has been installed will be the first to be removed and so forth until the scaffold is completely dismantled.
- Materials shall be removed from area for housekeeping.
7. RESPONSIBILITIES
All the following responsible persons shall have valid Third-Party Certification (TPC).
- 1 Scaffolding Supervisor/Superintendent
The Site Manager shall assign direct accountability for scaffold and access management to the Scaffold Supervisor. The Scaffold Supervisor for the project has the overall responsibility for ensuring compliance to the scaffold erection control and tagging procedure.
The Scaffold Supervisor is directly responsible for the following:
- ensuring safe access is provided for Scaffolders to work.
- ensuring that all his Foremen, Team Leaders and workers are conforming to site safety regulations and are Third Party Certified (TPC).
- ensuring that all scaffolds are erected according to site scaffold procedures.
- ensuring that scaffold schedules are met and still working within the site safety regulations.
- ensuring that material and workers are available to meet the site scaffolding requirements.
- ensuring that all documentation is adhered to Toolbox Talks, Harness Inspection, Site Request System, Scaffolding Tagging System and Safety reports.
- ensuring that his work force maintains good housekeeping practices throughout the area under his control.
- 2 Scaffolding Erection Foreman
The Scaffold Erection Foreman is responsible for implementing the specific requirements of this procedure including the following:
- to be qualified and competent person available to oversee scaffolding activities under his jurisdiction.
- Supervisor identifying those scaffold that require special design or erection techniques.
- ordering, handling, storing, disposal and overall management of scaffold material, quarantine if necessary.
- odentifying scaffold material needs.
- ensuring that the scaffolds are erected complete and in a safe manner.
- ensuring the appropriate tag is attached and signed off to each scaffold.
- ensuring scaffold builders are adequately trained for their assigned tasks.
- assignment of scaffold erection manpower and ensuring that crews meet production expectation.
- 3 Scaffolding Team Leader
The Scaffold Team Leader is directly responsible for the following:
- leading the team of scaffolders
- estimating material required for the job.
- ensuring safe procedures and job is carried out as per Job Safety Analysis (JSA)
- ensuring all PPEs are used.
- erection and dismantling scaffolding in running plants, shutdowns as per requirement.
- checking the quality of utilized scaffolding material (pipes, planks, clamps, etc.).
- carryout measurement of erected scaffolding.
- guiding and supervising scaffolders.
- proper storage and transportation of scaffolding materials within the Site.
- 4 Qualified Scaffold Inspector
- upon notification from the Supervisor that the scaffold is complete, he will then inspect the scaffold at all working levels.
- when satisfied; issue Scaff tag in full compliance-with-procedure.
- update after 7 days, modifications work or adverse weather conditions.
