quality

Report
Contract Supervision
 Roles & Responsibilities
 Monitoring Tools & records
 Quality Assurance/Quality Control
Why we need Contracts?
Binding
For
commitment
Share
Responsibilities
Towards Agreed
terms
Fulfill
Satisfy
Obligations
Requirements
Construction Management
Training
Module-1
2
OFFER
Consideration
ACCEPTANCE
(Value/ Causa)
CONTRACT
One party
RIGHT
To
other party
RISK
INTEREST
DETREMENT
PROFIT
LOSS
BENEFIT
Construction Management Training
Module-1
FOREBEARRANCE
3
Key Elements of a Contract
TERMS
EXPRESSED
( Verbal/Writing)
CONDITIONS
WARRANTIES
IMPLIED
( automatically)
STATUTORY/TRADE
CUSTOMS
Conditions of Contract
Conditions
GENERAL
( Universal)
Policies
Definitions
Dispute resolutions
PARTICULAR
( Suit to Environment)
Execution
Deviations from General Conditions
Time Frame
Specific applications
Construction
Management Training
Payment
Terms
Particular terms to suit
5
Module-1
ICTAD CONDITIONS OF CONTRACTSAVAILABLE PUBLICATIONS

ICTAD/SBD/01 - Standard Bidding Document for
Procurement of Works ( Vol 1&2, Yr 2007)

ICTAD/SBD/02 - Standard Bidding Document for
Major Contracts ( Vol 1&2, Yr 2007)

ICTAD/SBD/03 - Standard Bidding Document for
Minor Contracts ( Vol 1&2, Yr 2007)

ICTAD/SBD/04 - Standard Bidding Document for Design &
Build Contracts ( Vol 1&2, Yr 2007)

SCA/3/2
- Specifications for Water Supply,
Sewerage & Storm water drainage ( 2nd
Edition April 2002)
Construction Management Training
Module-1
6
Parties Involved in Contract Supervision
Employer
* Site Representatives/Consultants
Engineer
*Representatives
Contractor
*Site Agents
*Sub Contractors
What are the Engineer’s duties and powers?





Supervision
Instructions
Extensions & Suspension of Contracts
Valuation & Claims
Mediation at Contractual Disputes
Engineer’s powers - Supervision
Supervision
•Organization & Correspondence
•Agreed Contactor’s work programs.
•Examining contractor’s proposal’s &
Method Statement and approving
•Acceptance of tests at completion and
ordering commissioning of elements.
•Comment satisfaction
Responsibilities of Engineer’s
Representatives/ site agents
Act according to delegated functions
Watch, supervise & examine site works with tests
Adherent to the orders/ decision of the engineer.
Records on extra or additional works, pertaining to the
extension of time
• Joint admeasurements
• Order stoppage of work at unsafe situations / noncompliance with specification
• Assist Engineer on valuation/ claims
•
•
•
•
Monitoring Tools/methods

Audit measures the cost or value of inputs, such as materials and manpower, in relation to
producing the outputs. Audit could be in both Technical & Financial Aspects. Audit mainly
measures efficiency using quantitative methods.

Management Information System (MIS) is a process by which raw data is collected,
summarized and given to the management of a project or program. It includes computeraided information systems and is meant to alert the managers who then take decisions. MIS
is useful for efficiency questions; however, ensuring the validity/accuracy of information
can be difficult.
 Performance monitoring (also called performance evaluation) checks what is
achieved and the expenditure for the different achievements for the project. The
validity of performance monitoring can be problematic when performance
monitoring is connected to the release of payments.
 Auto-monitoring (also called auto-evaluation) originally meant assessment by an
individual or a small group of their own activities judged against a set of indicator,
which they set for themselves. The concept has since broadened to mean
increasing the capacity of the project personnel and stakeholders for monitoring
their own programs and activities taking control of their own programs. Both
qualitative and quantitative methods are used.
11
Construction Records for Contract Monitoring
Contractor’s
Submittals
 Submittal register ( Program for
submittals)
 Master Work Program & Individual
programs for sub-components
Construction Records
 Official site Log book
 Resource utilization daily records
o Supervisory & Labor
o Plant & Machinery
 Method Statements for works
including temporary works
 Daily Weather Records or
weather charts
 Material Test reports and applicable
standards
 Daily work records ( DPR)
 Manufacturer’s performance or test
certificates
 Safety & Environment Management
Plan during Construction
 Approvals
•
•
•
•
Pre-inspection records
Prior approval forms ( setting out,
Concrete, etc)
Test witness records ( site &
laboratory)
Testing & commissioning approval
forms
Quality Assurance & Quality Control at Construction
What is Desired Quality?
•
Achieved by how & whom?
•
Shall be an inbuilt element of the design
documentation ( design brief) and as well as
at the Contract documentation ( specific
terms)
•
“Quality Culture” is a important feature at
the construction and shall be a achieved
through “team spirit “ of both the Engineer
/Engineer’s representatives and the
Contractor
•
Should not strict on “ perfection” or “Zero
defects” thereby tolerances and flexibility
shall be clearly spelled out at the inception
of work and at agreed method statements &
shop drawings
•
Quality assurance should be ensured
through standard quality tests and with
trade practices and should disclose the
satisfaction of quality of end product after
test proceedings
•
“ Quality is never an accidently achievement
and it always the result of intelligent effort”
Quality of construction attributes
appearance, aesthetic, stability, strength and
durability
•
Construction quality is a relative term and
thereby before controlling quality one must
have a “reference quality level”
•
Quality at construction work shall involve
cost & time and thereby tread-offs or balance
to be considered with “ complementary cost”
and related “time factors”
•
Technical quality shall be governed by “
Standards” but Functional or Operational
quality is the desired level for intended
purpose
Standard Quality Tests
Field Tests
Laboratory Tests

Long & Short Duration Pumping Tests
•
Quality of Water for concreting ( BS 3148)

Standard Compaction Tests for dry density (
ASTM D 1557, BS 1337)
•
Fine & Coarse Aggregates for Concreting
(BS 882 or ASTM C33)

Hydrostatic Pressure Testing for Pipe Lines
( BS 8010, AWWA C 600, AWWA C 907) )
•
Sampling & Testing of Reinforcement ( BS
4449, Appendix C)
•
Concrete Mix Design ( BS 8007, BS8110,
BS 5328)
•
Admixtures ( ASTM C 494 or BS 5075)
Sterilization or Disinfection of completed pipe
lines ( ANSI/AWWA C 651)
•
Curing Compounds ( ASTM C 309)

Trial Mix for Concreting (ASTM C 143)
•
Sampling & Testing of Fresh & Harden
Concrete ( BS 1881 or ASTM C31 & 39)

Slump Test for Concreting ( ASTM C 143)
•
Sampling & Testing of Cement Blocks ( BS
6073 or ASTM C 90)


Hydrostatic Pressure Testing for Water
Retaining Structures ( BS 8007)
Some Rural Constructions
Some Rural Constructions
Practical Aspects/Areas to Give Thought to ensure end Quality at WSS
•
•
•
•
•
•
•
Site layouts
Construction sequence at congested work
Depth of pipes & bedding materials
Locating washouts & air valves
Laying pipes in hilly terrains
Mix designs and admixtures for Gr 35 concrete
Temperature control at concreting and placing of
construction joints at water tanks
• Color selection for structural elements and buildings
and final finishing techniques
• Approving methods for defect repairs
Thanking you for your keen interest and
concerns on quality construction at peaceful
working environment
Sanath Fernando

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