assoc.prof.dr. İbrahİm yİtmen

FACULTY OF ENGINEERINGDEPARTMENT OF CIVIL ENGINEERING

2015-2016 FALL SEMESTER

ASSOC.PROF.DR. İBRAHİM YİTMEN

CIVL 493 CONSTRUCTION MANAGEMENT

QUALITY MANAGEMENT2

QUALITY MANAGEMENT

Definition of QualityQuality in the constructed project is achieved if the

completed project conforms to the stated requirements of the principal participants (owner, design professional, constructor) while conforming to applicable codes, safety requirements and regulations.


QUALITY MANAGEMENT

Management of quality normally involves three steps:

Quality planning – determining the relevant quality standards

Quality assurance – planning the quality activities Quality control – keeping errors out of the process


QUALITY CONTROL/QUALITY ASSURANCE

Quality Assurance…….….encompasses both quality engineering and quality control

Quality Assurance is…….…..the application of standards and procedures to ensure that a product or facility meets or exceeds desired performance criteria



Quality Assurance is…….…..documentation to verify the results obtained

• Quality Engineering describes procedures to ensure the design for a structure proceeds according to recommended and mandatory criteria set by:

• related trade and professional associations

• building code authorities

• federal, state, and local government entities



• Quality Control includes: • setting specific standards for construction performance,

usually through plans and specs

• measuring variances from the standards

• taking action to correct or minimize adverse variances

• planning for improvements in the standards

The architects and design engineers set the criteria for construction, QC ensures that the physical work conforms to those standards



• THE ISO 9000 SET OF STANDARDS • The frame of reference for quality assurance is the ISO

9000 set of standards. The emergence of the ISO 9000 Quality Systems standard greatly increased the interest in formalized quality and certification. The role of ISO has also been important in coordinating the various national systems (Euronorm EN, TS, etc.) ISO 9000 registration, or certification, is increasingly essential for anyone wishing to supply large corporations or to tender for public contracts.



• Elements of Quality include:

• Quality Characteristics

• Quality of Design

• Quality of Conformance



Quality Characteristics……

• dimension• color• texture• strength



Quality of Design…….

• Defines tolerances or ranges of acceptable variation for attributes such as:

• size, spacing, clearance, strength, finish, etc.

Designers must understand the impact that higher standards and tighter tolerances have on cost

• standards of quality should be appropriate to the intended function and appearance



Quality of Conformance…….

• The degree to which the physical work conforms with the standards.

• Often measured in terms of “rate of rejection”

Example:

“x” rejects per 100 or 1000

• Often applies statistical concepts and techniques



“Quality in the Constructed Project”• a comprehensive manual published by the ASCE• includes guidelines and recommendations for owners,

designers, and constructors on how to provide quality in constructed projects

• addresses peer reviews



NON-CONFORMANCE REPORTS A non-conformance report (NCR) is an important instrument to register works

that have been performed not in accordance with specifications. The finding of improperly done site work causes a NCR to be ‘raised’ and signed by both contractor and Engineer. The procedure for an NCR can be simplified as follows:

1. A non-conformance is observed on site NCR is raised and registered2. NCR is reviewed, typically by Engineer in collaboration with designer and contractor,

etc. 3. Engineer decides the disposition (action to be taken), these are typically one of the

following: Demolish/Rework, Repair or Accept-as-is. 4. Contractor carry out the disposition 5. Works are checked to be in conformance with Engineers disposition 6. Contractor takes appropriate steps to avoid recurrence



A Quality Manager may have the following duties: Setting up the quality system Writing procedures Staff training Monitoring performance of QA system Coordinate sampling of construction materials Ensure compliance with ISO9001 through internal quality audits Ensure that subcontractors QA system conforms with contract requirements Working with external assessors Revising and continuously improving the system


assoc.prof.dr. İbrahİm yİtmen

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