Quality Assurance / Quality Control Philosophy
AGTL’s approach to quality assurance and quality control is guided by our desire to deliver a product in line with our Client’s wishes while generally maintaining a high level of quality. Emphasis is placed on communicating with the client on a regular basis to ensure that both parties are aware of the progress of each phase of a project.
While QA/QC procedures are tailor made to suit specific projects, they are governed by the philosophy captured in the following points:
- Control of a procedure
- Contract review
- Control of contract variation
- Control of non-conformance
- Corrective action
- Quality management audits
Overall project quality is achieved through management of each of these areas, from review of the specific procedures developed to monitoring of problems as they arise.
Area 1 governs the format, preparation, revision and distribution and administration of procedures, from assigning reference numbers to outlining those in charge at each step in a procedure.
Area 2 details the method used to ensure that the Project Manager is in possession of all the documents which will enable the contract to commence on a sound basis. This includes a close working relationship between the Senior Estimator and the Managing Director to ensure that documents submitted are in line with the tender documents received and resolving and differences with the Employer.
Area 3 ensures that all variations to the design element of a contract are documented and correctly implemented. It also ensures that consequential effects on other elements of design are also recorded.
Area 4 ensures that consultants and subcontractors are selected on the basis of quality and their ability to meet the contract requirements. This includes careful definition of the parameters of contract requirements and limits of the scope of work content.
Area 5 details the method used to provide assurance of an acceptable standard of completed work, while making sure that non- conformances are properly identified and recorded. Where necessar, a procedure review will be carried out in the event that the non-conformance is as a result of inadequate work practices.
Area 6 outlines methods needed to prevent th recurrence of a non-conformance by taking corrective action once they have been indentified, section leaders being responsible for indicating nthe non-conformance to the originator. The originator has to correct the non conformance, explaining in writing how conformance has been achieved or why such non conformance is essential to the good of the project.
Area 7 ensures that all personnel carrying out quality related functions have received necessary training to ensure that they can perform their tasks. This includes identifying areas requiring appropriate special skills courses needed.
Area 8 provides for the proper management and updating of quality management systems, constant auditors reports being used to ensure that quality is being maintained.
In general our quality policy relies on the input from every supervisor and sub-contractor involved in the works as we strive to implement the philosophy of Total Quality Management whereby each contractor must satisfy his client. In this philosophy we intend to impart to the relevant personnel through onsite training and regular meetings and discussions; we believe that this is the ony way to achieve and deliver a product to satisfy the client’s wishes.
The implementation of such policy will require all stakeholders to be cognizant of the specifications and approval procedures to be followed in the execution of the works. In view of the above we will follow the under-mentioned guidelines:
- Review all specifications and relevant documentation giving an insight to the client’s wishes.
- Obtain and provide certificates of quality from manufacturers of all major materials .
- Sample and testing of major materials as required by specification. These will include but not limited to the following: steel reinforcement bars, ready mix concrete, concrete blocks, site mixed mortar and infill concrete.
- Determinatioon of torque value through tension calibrator for tensioning of bolts, the procedure to be repeated on a daily basis during the tensioning process.
- Independent testing to verify tension in bolts
- Provision of method statements for major works: – in addition to the sequence and methodology these will treat with the specifics of the quality control measures to be followed for the particular aspect of the works.
- Preparation of shop drawings.
- Inspection of works prior to commencement and during execution.
- Review designed elements and make proposals to improve build ability and hence quality where possible
- Review drawings and submit queries via request for information.
- Design of appropriate shutters for concrete works.
- Planning and scheduling of the works
- Maintaining logs which include but are not limited to the following:
- Request for information
- Site works instruction
- Site Instruction
- Concrete Quality
- Cube Tests Results
- Method Statements
- Plant and Equipments
- Material Received
Quality Control of Major Materials
- Ready Mix Concrete
- Slump tests on each batch as necessary to verify work ability of concrete.
- Sampling and molding of cubes as per specification or as agreed with the Client.
- Crushing of Cubes at 7, 14 & 28 days to the Client ensuring adequate compaction and proper finishing
- Curing of concrete after placement or stripping by an application of concrete curing agent.
- Concrete Blocks
- Crushing of block samples to verify and document compressive strengths
- Absorption tests on block samples
- Structural Steel
- Review and documentation of mill certificates
- Reinforcement Bars
- Tensile test to determine/verify yeild strenght, elongation etc
- Review and documentation of mill certificates
- Imported Fill Material
- Sieve Analysis to determine graduation
- Moisture / Density Test
Management & Personnel
QAQC plans are monitored on site by the Project manager with the assistance of the Engineer; the Project Manager reporting directly to the Managing Director, to maximise input as well as the ability to effectively manage the plan. In line with our policy stated in the section above, each personnel in the organisation structure has a part to play; the Construction Manager and his team of supervisors in unison with the subcontractors ensure that quality is built in every aspect of the works executed on site