contractor performance assessment

7/27/2019 Contractor Performance Assessment

1/25

Review of ContractorsPerformance Assessment System


2/25

Objectives of Review

Enhance objectivity and transparency

Incorporate important performance criteriaand raise their weightage


3/25

Assessment by consultants 170 points

Assessment by HDB 80 points

Total 250 points

Current System of Assessment

Assessed by both consultants and HDBs

Project Director

Performance scored to be concurred by DDs

and approved by Directors Contract Performance Review chaired by GDBQ

with Directors to review the performance score


4/25

Overview

Assessment by Consultant Progress of works

M&E functional tests

Critical C&S tests

Handover inspection


5/25

Overview

Assessment by HDBAssessment criteria not quantifiable

Reduce weightage

More guidelines set

Incorporate important criteria and new initiatives HDB audits

Productivity and sustainable construction initiatives

HDB PD to assess Arch functional tests, M&Efunctional tests, critical C&S tests and inspectioncarried out by HDB


6/25

Progress of Works

Progress Score

More than 1 months ahead of schedule 30

Up to 1 month ahead of schedule 27

On schedule 24

Up to 0.5 month behind schedule 18

More than 0.5 to 1 month behind schedule 15

More than 1 month to 2 months behind schedule 12More than 2 months behind schedule 0

Old


7/25

Progress of Works

To allocate 5 points for meeting milestone of

critical activities

To reduce band and lower score for delay

more than 0.5 month


8/25

Progress of Works

Progress of Works* Points

More than 1 month ahead of schedule 25

No delay and up to 1 month ahead of schedule 20

Up to 0.5 month delay 16

More than 0.5 month and up to 1 month delay 10

More than 1 month and up to 2 months delay 5

More than 2 months delay 0

New

* Take into account of Contractors entitled EOT excluding exceptionally

inclement weather for ease of assessment


9/25

Progress of Works

Timeliness in meeting critical milestones / activities

Submission and approval of ECM & SHMS

Setting up and approval of timber mock up

Submission of workshop drawings for cast-in windows and

precast components

Submission and approval of materials, method statements

and trades demonstration

Setting up and approval of sample units

Handover of lift motor room

Readiness of site for laying of services


10/25

M&E Functional Tests(Total 6 points)

Items to Assess

Electrical

Electrical substation

Main switchboardLightning protection system

Public lighting

Unit testing

TV system

Fire alarm system

Standby generator

Mechanical

Refuse handling plant

Booster pumping system

Rainwater pumping system

Waste water pumping system

Ejector / divertor system

Dry / wet risers system

Fire hosereel systemMechanical ventilation system

Leakage test for gas pipe installation

Sprinkler system

Plumbing & sanitaryWater pressure test for concealed pipes

Concealed stack leakage test

* Base on the result of worst block tested during assessment period and deduct 0.4 pointfor each test failure


11/25

Assessment by Consultants

S/N Criteria Max. Score

1 Quality of Works 105

Structural Works 40

Architectural Works 39

M & E Works 16

Handover Inspection Assessment 10

2 Management 65

Construction Planning & Management 10

Response to Instructions 5

Compliance with Environmental Requirements 10

Progress of Works 30

Safety 10

50*

* 10 points for quality of timber mock up and sample units

15


12/25

Assessment by HDB

Description Points

Contractors senior managements commitment 20

Site management team 20

Use of reliable subcontractors 20

Innovation and initiatives 20

Old


13/25

Assessment by HDB

Description Points

Contractors senior managements commitment 10

Site management team 10

Handover inspection assessment 10

Functional and critical C&S tests 10

Productivity and sustainable construction initiatives 20

HDB audit checks 20

New


14/25

Contractors Senior Management

CommitmentDescription Points

Minimum once a month visit to site by senior management 2

Company Quality Management System

Team for CONQUAS pre-inspection & rectification

Formalised system for pre-handover inspection & rectification

2

Responsiveness to HDBs instruction in meeting project objectives

Increase resources and special efforts to expedite the works

Managing residents complaints

Meeting safety & housekeeping and ECM objectives

2

Commitment over and above contractual requirements in meetingproject objectives

2 Increase resources and special efforts

To mitigate delay caused by others

To exceed bonus threshold for CONQUAS

Use of reliable subcontractors 2


15/25

Site Management Team

Description Points

Experience of site team

Project Managers experience in residential project

Safety Officers experience in residential project

Supervisors experience in residential project

3

Competency and adequacy of site team 3

Ability of site team in solving problem

Effectiveness

Ability to foresee

Proactive in highlighting and providing solutions

4


16/25

Review on Handover Inspection

(a) BIT 1st Inspection Result ( 5 points )

S/N No. Of Defects Per Unit In 1st BIT Inspection (D) Points Awarded

1 2 and below 5

2 2 < D < 3 4.5

3 3 < D < 4 3.5

4 4 < D < 5 3

5 5 < D < 6 2

6 6 < D < 8 2

7 8 and above 0

(b) No. Of Inspection Before Handover ( 5 points )

S/N Number Of Inspections Before Handover Points Awarded

1 1 5

2 2 4

3 3 and above 0

Old


17/25

Handover Inspection

(a) BIT 1st Inspection Result ( 5 points )

S/N No. Of Defects Per Unit In 1st BIT Inspection (D) Points

1 1 and below 5

2 1 < D < 2 4.5

3 2 < D < 3 4

4 4 < D < 5 2

5 5 and above 0

(b) No. Of Inspection Before Taking Over ( 5 points )

S/N Number Of Inspections Per Block Before Handed Over Points

1 1 5

2 2 3.5

3 3 and above 0

New

Base on the result of worst block inspected

during assessment period


18/25

Functional and Critical C&S Tests

Type of Test Points

Critical C&S tests 3

Arch Functional tests 3.5

M&E functional test 3.5


19/25

Critical C&S Tests

Critical C&S Tests

Test cubes results at 28 days

Steel reinforcement tensile test

Deduct 0.2 point for each test failure during assessment

period


20/25

Arch Functional Tests

Arch Functional Tests

Water tightness test for windows & wall joints

Water tightness test for precast wall joints

Wet area water tightness testFlat roof water tightness test

% Of Samples Failed The Test At First Attempt Points

0% 3.5

< 5% 2

5% and above 0

Base on the result of worst block tested during assessment period

Use above table to assess each functional test and take average


21/25

Review on M&E Functional Tests

Items to Assess

Electrical

Main switchboard

Lightning protection system

Public lighting

Unit testing

TV system

Mechanical

Refuse handling plantTransfer pumping system

Booster pumping system

Rainwater pumping system

Waste water pumping system

Ejector / divertor system

Fire alarm system

Standby generatorDry / wet risers system

Fire hosereel system

Mechanical ventilation system

Sprinkler system

Plumbing & sanitary Water pressure test for concealed pipes

* Base on the result of worst block tested during assessment period and deduct 0.2 pointfor each test failure


22/25

Productivity and Sustainable

Construction Initiatives

Initiatives Points

Productivity initiatives

Adopt new methods of construction

Use machinery for construction

Adopt new materials for construction

Effective resources planning and plan to improve

productivity

Partnering HDB in R & D projects 20

Sustainable construction initiatives

Use energy efficient appliances for site office

Use UV film or blinds for site office window

Use recycle water for toilet flushing Other initiatives promote sustainable construction

Award 2 points for each productivity and sustainable construction

initiatives adopted subject to maximum of 20 points


23/25

HDB Audit Checks

For our audits to be more impactful, the audit

outcome shall be considered in the assessment

Description Points

Take the worst report during assessment period and

deduct 0.4 point for each non-compliance and the

minimum score would be 0

PD / PDA audit

CAT audit

Safety audit by BID

C&S audit by BID

3

33

3

Timeliness in closing up audit report 8


24/25

Implementation

To implement the proposed changes from next

assessment period (Apr 12 to Sep 12) onwards


25/25

End

contractor performance assessment

Documents