Microsoft Word - QLASSIC MODULE

QLASSIC
MODULETHE HISTORY OF

&
STRATEGIES

FOR PETRONAS OFFICE
COMPLEX, KERTEH

REVISION : 0.0 DATE : 13 MAY 2019



1.0 INTRODUCTION

AZRB/AZSB has introduces the QLASSIC Module and Strategies in order to assess the
quality at projects. The assessment system is an independent method to assess and
evaluate primarily on the quality of workmanship of the work done during construction
based on this module.

1.1 The Objective of QLASSIC Module and Strategies

Module designed with following objectives:-

i. To benchmark the level of quality of the AZRB/AZSB Project.
ii. To have a standard quality assessment system for quality of workmanship
iii. To have a system to assess quality for projects during construction.
iv. To measure constructed works against workmanship standards and project

specification. (i.e: CIS 7:2014 – Quality Assessment System for Building
Construction Works).
v. To enable quality standard assessment carried out systematically within
assessment period.

2.0 QUALITY STANDARD

2.1 Components to be assessed

The quality standards for building construction work are divided into four main
components:-

a) Architectural works

Architectural works deal mainly with finishes. This is when the quality and standard of
workmanship are most visible.

Architectural works encompass floors, internal walls, ceilings, doors, windows, fixtures,
external walls, aprons, perimeter drains, structure car parks and car porches.

b) M&E Works

The quality of M&E works is important in view of its increasingly high-cost proportion and
its impact on the performance of a building. The assessment covers electrical works, air-
conditioning and mechanical ventilation works (ACMV), fire protection works, sanitary and
plumbing works, and basic M&E fittings.

c) External works

External works cover the general external work elements in building construction such as
the link-way/ shelter, external drain, roadwork, car park on the ground, footpath, turfing,
playground, court, gate, fence, swimming pool, electrical substation, guard house and bin
centre.

QLASSIC Module & Strategies - POC Project Page 1 of 32

3.0 ASSESSMENT

The assessment for building construction work is carried out through a sampling and
statistical approach.

3.1 Weightage

The weightage for structural, architectural, M&E and external works are allocated in
accordance to four categories of buildings (see Table 1) and so suit with POC project,
modified weightage was establiched accordingly (see Table 2).

Table 1. Allocation of weightage for component of building construction works
according to building category

Component Residential Building Non-Residential Building
Structural Works
Category A Category B Category C Category D
Stratified housing Public/ Public/
Landed housing
(%) (%) Commercial/ Commercial/
Industrial building Industrial building
15 20
(%) (%)

20 20

Architectural Works 70 60 55 50

M&E Works 5 10 15 20

External Works 10 10 10 10

Total Score 100 100 100 100

Note:
Category C is without centralised cooling system, Category D is with centralised cooling system.

Table 2. Modified Weightage for POC Project

Component Residential Building Non-Residential Building
Architectural Works
Category A Category B Category C Category D
Stratified housing Public/ Public/
Landed housing
(%) (%) Commercial/ Commercial/
Industrial building Industrial building
85.86 82.87
(%) (%)

82.24 80

Basic M&E Fittings 1.84 3.32 2.81 4

External Works 12.27 13.81 14.95 16

Total Score 100 100 100 100

Note:
Category C is without centralised cooling system, Category D is with centralised cooling system.

QLASSIC Module & Strategies - POC Project Page 2 of 32

The weightage system is aimed at making the score quantitative and represent the quality
of workmanship of a building project. It has taken into consideration the distribution
between the cost proportions of the four components in the various buildings and their
aesthetic considerations.

The total quality score of a building project is the sum of marks awarded to the four
components in each category of a building.

Each category of a building comprises as following:

i) Category A (Landed housing) – Detached, semi-detached, terrace and cluster houses

ii) Category B (Stratified housing) – Flats, apartments, condominiums, service apartments,
small office home office (SOHO) and town houses

iii) Category C (Public/commercial/industrial buildings without centralised cooling system)
– Office buildings, schools, factories, warehouses, workshops, hangers, small office
flexible office (SOFO), small office virtual office (SOVO), religious buildings, stadiums,
community halls, hospitals, airports, universities, colleges, police stations, etc

iv) Category D (Public/commercial/industrial buildings with centralised cooling system) –
Office buildings, schools, factories, warehouses, workshops, hangers, small office flexible
office (SOFO), small office virtual office (SOVO), religious buildings, stadiums, community

halls, hospitals, airports, universities, colleges, police stations, etc

3.2 Sampling

As it is impractical to assess all elements in a building project, the assessment is carried
out through a sampling approach. The sampling, which is based on the gross floor area
(GFA) for the building and 10 m length section or per location for the external works, is to
ensure that the assessment adequately represents the entire building project.

3.3 Architectural work assessment

Assessment of architectural works is carried out upon completion of the building project and before
the handover of the project.

The weightage for architectural elements are allocated as per Table 3.

QLASSIC Module & Strategies - POC Project Page 3 of 32

Table 3. Weightage for architectural elements

Architectural element Weightage (%)

Breakdown Total

Internal Finishes 68

Floor 18

Internal wall 18

Ceiling 8

Door 8

Window 8

Fixtures 8

External finishes 26

Roof 10

External wall 10

Apron and perimeter drain 3

Car park/Car porch 3

Material and functional 6

tests Skim coat or prepacked plaster 3

Wet area water-tighness test- 3

QP declaration and report

Total 100

Note:

A weightage of 3% is automatically awarded to projects, where skim coat or prepacked plaster is used. This is to encourage

the use of these products in the industry

3.4 M&E works assessment

Assessment of M&E works is carried out during construction and upon completion of the
building project and before the handover of the project. The assessment covers basic M&E
fittings and performance tests.

3.5 External Works assessment

Assessment of external works is carried out upon completion of the building and before the
handover of the project.
The assessment consists of the following locations:
a) Link-ways/shelters - 10 m length section per sample and minimum 2 samples
b) External drains - 10 m length section per sample and minimum 2 samples
c) Roadwork and parking bay - 10 m length section per sample and minimum 2 samples
on the ground
d) Footpaths and turfing - 10 m length section per sample and minimum 2 samples
e) Playground - 1 location
f) Court - 1 location

QLASSIC Module & Strategies - POC Project Page 4 of 32

g) Fence and gate - 10 m length section per sample and minimum 1 sample

h) Swimming pool - 10 m length section per sample and minimum 1 sample

j) Electrical substation - 1 location

k) Guard house - 1 location

l) Bin centre - 1 location

Each item in the external works will be assessed separately and all the listed locations
must be assessed, where applicable. The total QLASSIC score for external works shall be
the marks achieved divided by the total achievable marks.

QLASSIC Module & Strategies - POC Project Page 5 of 32

QUALITY STANDARDS FOR ARCHITECTURAL WORKS
PART 1 : INTERNAL FINISHES

Item Type of Location Standard
Element Material Ground Floor 1st Floor
2nd Floor

FLO

1 All Relevant Location i. Finishing

▪ No stain marks

▪ Consistent colour tone

ii. Alignment and Evenness
▪ Evenness of surface

General Requirements ▪ Falls in wet areas should be in right direction
All Relevant Material
▪ For staircase, the variance in lengths of
treads and risers must not exceed 5mm from
dimensions specified in the approved
drawings
iii. Cracks and Damages

▪ No visible damages/defects

iv. Hollowness/ Delamination

▪ No hollow sound when tapped

▪ No sign of delamination

v. Jointing
▪ Consistent skirting thickness and no visible
gaps between wall and skirting
▪ Edge to be straight and aligned

QLASSIC Module & Strategies - POC Project

Tolerance Assessment Method Common Issues Control Measure

OOR

▪ Coordination between trade of works

Visual ▪ Dented floor finished due to ▪ Material selection. Exm. marble - selection in
Visual other trade works which come aspect of color tone (light color need more
in later. care), natural stone design and etc.
▪ Material used from same batch of
production.

≤ 3mm per Spirit level 1.2m and ▪ Ensure workers have their own spirit level
1.2m and it was used during tile installation.
1.2m steel wedge ▪ Lippage between floor tiles. ▪ Follow the staircase drawings details
properly.
Spirit level 1.2m ▪ No falls in wet areas. ▪ Material used from same batch of
▪ Variance in length of treads production.

and risers.
≤ 5mm per Spirit level 1.2m and

1.2m steel wedge

Visual ▪ Damaged due to other trade ▪ Coordination between trade of works.
Tapping rod works which come in later. ▪ Make a compulsory for subcontractors to
▪ No protection during storage provide the protection after installation.
Physical
d f i ll i

▪ Ensure the cement mortar not be lefted for

more than 1 hours after mixed. (time gap

between mixed and patch/ lay works)

▪ Hollowness at floor tiles and ▪ Ensure full cement mortar laid underneath of
skirting (favourite checking area tiles (remind during briefing to subcontractor)
by assessor). ▪ Selection of bedding material for marble and
tiling - use one system bedding material which
▪ Delamination - Usually occur bonding agent premixed with powder and
for timber floor. water. (produce better workability and not

required much attention on the mix control)

▪ Ensure proper storage of material to avoid

material damages.

Visual ▪ Skirting thickness vary from ▪ Ensure setting out before wall concreting/
Visual end to end. plastering was correct and aligned.
▪ Skirting thickness size too big. ▪ Design - Ensure the floor tiles design and
▪ Difficult to treat the small layout details was follow to quality standard.
portion (exm. gap between door (end side of tiles was uniform in size), (allow
frame and wall) which caused sufficient space to carry on other trades)
complication during installation ▪ Follow the details drawing properly.
of skirting.

Page 6 of 32

QUALITY STANDARDS FOR ARCHITECTURAL WORKS
PART 1 : INTERNAL FINISHES

Item Type of Location Standard
Element Material Ground Floor 1st Floor
2nd Floor

FLOOR (c

2 a. Store a. Utility

b. Loading Bay

c. MDF Room

Screed Finishes d. Sprinkler Pump ▪ Surface should not be unduly rough or
1. Cement Render Room patchy
e. Pump Room

f. Meter Room

g. Transfomers

h. Switchgear - NIL -
Room

i. Standby Genset

j. Consumer

Switch Room ▪ No permanent foreign material visually
k. Corridor 3 detected
l. AHU

m. Rainwater

Harvesting

3 a. Preparation a. Preparation a. GS studio

Tiled Floor Area b. Toilet KLCCUH b. Toilet &
1. ''Feruni' Homogeneous Tiles or equivalent
b. Cafeteria Office (Female, changing room ▪ Joints are aligned between tiles and
2. Ceramic Tiles
c. Kitchen / Boh Male & Janitor) (F) consistent in size

d. Serving Area c. Toilet Meeting c. Toilet OKU (F)

e. Hall Room (Female, d. Toliet (F)

f. Security Room Male, OKU & e. Toilet (M)

g. Toilet Janitor) f. Janitor

h. Changing d. Tea Bay Area g. Staircase 1

Room e. Breakout Area h. Staircase 2&3 ▪ Consistent and neat marking

i. Janitor f. Lift Lobby i. Staircase 4

j. Fire Control j. Lift lobby

Room k. Corridor

k. Staircase

l. Sidewalk Café

m. Lift Lobby ▪ Lippage between two tiles
n. Corridor Main

Entrance

o. Corridor 1-2

QLASSIC Module & Strategies - POC Project

Tolerance Assessment Method Common Issues Control Measure

continue)

Visual ▪ Rough surface on screed floor.
Visual ▪ Shrinkage crack on screed
floor.

▪ Screed mixing (avoid conventional cement
sand screeding - difficult to maintain mix
consistency)

▪ Undesirable material inside
screed floor finished.

Visual ▪ Jointing between tiles not ▪ Use spacer during tiles installation.
consistent in size.

Visual ▪ Grouting at joint between floor ▪ Ensure full grout between floor tiles.
tiles not fully grout.

≤ 1mm Tapping rod or L- ▪ Lippage between floor tiles. ▪ Check on material itself before install.
square (200mm x ▪ Consistent mortar thickness underneath of
300mm) and steel floor tiles.

wedge

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QUALITY STANDARDS FOR ARCHITECTURAL WORKS
PART 1 : INTERNAL FINISHES

Item Type of Location Standard
Element Material Ground Floor 1st Floor
2nd Floor

FLOOR (c

4 a. KLCCUH Office a. ECC room

- Working Area b. Discussion

- Meeting Room room 1,2,3 &4 ▪ Surface should be stretched firm and even
Carpet
1. 'Miliken' Carpet Tiles or (12 pax) c. Working area

Equivalent. - OSR d. Meeting room

- Tender (10 pax)

- NIL - Evaluation e. Integration ▪ Joints should not be visible
- Phone Room room

- Filing f. Regional sec.

- Store Contr. Cent.

b. Contractor's g. OSR

Room h. Filing ▪ All edges should be properly anchored
i. Store 1&2

j. Corridor

5 a. Surau Female

Special Floor Finish 1. Vinyl a. Surau b. Petronita ▪ Finished texture and colour to be uniformed
- Surau Male society room
- NIL - - Imam Room c. Gym /
- AV Room recreation room
(F)

d. Pantry

1. Stainless 2. Pebble b. Ablution & ▪ Follow general requirement, where
Steel Panel Wash applicable
shoe area (Male e. Ablution &

Surau) shoe area (F)

6 Cafeteria

3. Vinyl 2. Homogenous Tiles a. Hall a. Preparation a.Staircase
b. Security Room b. Staircase b.Lift Lobby
c. Fire Control c. Tea Bay Area C.Corridor
Room d. Breakout Area
d. Staircase e. Lift Lobby
e. Sidewalk Café
Skirting f. Lift Lobby ▪ Joints are aligned with skirting tiles or wall
g. Corridor 3 tiles

a. Surau a.ECC Room

b. KLCCUH b.Surau

c.Contractor's c.Discussion

Room Room 1-4

d. Meeting Room d.Petronita

Society Room

e.Gym/

Recreation Room

(F)

f.GS Office

QLASSIC Module & Strategies - POC Project

Tolerance Assessment Method Common Issues Control Measure

continue)

Visual

Visual

Visual ▪ Uneven surface ▪ Ensure underneath surface floor is even and
▪ Visible joint within tolerance prior carpet installation.
▪ Types of material (thickness and size)

Visual

Visual

Visual ▪ Floor tiles not aligned with ▪ Floor tiles detail design (ensure the floor tiles
skirting/ wall tiles alignment. aligned with skirting/ wall tiles alignment)
▪ Hollowness at skirting tiles. ▪ Ensure the cement mortar not be lefted for
more than 1 hours after mixed. (time gap
between mixed and patch/ lay works)
▪ Ensure full cement mortar laid underneath of
tiles (remind during briefing to subcontractor)
▪ Selection of bedding material for marble and
tiling - use one system bedding material which
bonding agent premixed with powder and
water. (produce better workability and not
required much attention on the mix control)

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