SOCIETY OF MYANMAR CIVIL ENGINEERS …smces.org.sg/wp-content/uploads/2014/12/Design-Development-of-Cons...society of myanmar civil engineers (singapore) s m c e s seminar (yangon)

DESIGN DEVELOPMENT OF CONSTRUCTION PROJECT

DESIGNMENT DEVELOPNMENT OF CONSTRUCTION PROJECT BY CCW

SOCIETY OF MYANMAR CIVIL ENGINEERS (SINGAPORE)

S M C E S

SEMINAR (YANGON) 2015

PREPARED BY CHO CHO WIN

OBJECTIVE

• To understand civil & structural engineers work scope, role and responsibility

involving in the residential project starting from preliminary design stage to

completion stage

• Importance of coordination between consultant teams and builder which will

lead much implication on time and cost even design is safe, reliable and

structurally efficient

• To share the consideration of civil works (road, trees and plants, drainage and

sewerage

• To share authority rules and regulations, submissions and their concern on civil

and structural works


DESIGN DEVELOPMENT OF CONSTRUCTION PROJECT

DESIGN DEVELOPMENT CAN BE STATED AS

• PRELIMINARY DESIGN STAGE – CONCEPT DESIGN

• DETAIL DESIGN AND TENDER STAGE

• CONSTRUCTION STAGE

• COMPLETION STAGE


OWNER/DEVELOPERBUILDER

ARCHITECT LEAD CONSULTANT

CIVIL & STRUCTURAL MECHNICAL & ELECTRICAL

QUANTITY SURVEYOR

LANDSCAPE INTERIOR DESIGN

- Generally C&S consultant is selected by client (for government projects)

- Or engaged by contractor/builder (residential/ commercial/mixed development

projects- design and build)

CONSULTANT TEAM


RE/RTOQP’S REP

INVOLVEMENT OF C&S CONSTULTANT

PRELIMINARY DESIGN STAGE

• STRUCTURAL CONCEPT BASED ON CLIENT NEEDS, ARCHITECTURAL DESIGN

INTENT AND AUTHORITY CONSTRIANTS

- ENVIRONMENTAL HEALTH, SAFETY AND DESIGN RISK ASSESSMENT

- BUILDABILITY SCORE- ARCH, C&S, M&E

- GREEN MARK REQUIREMENT- ARCH, C&S, M&E

- CONSTRUTABILITY- BUILDER



ENVIRONMENTAL HEALTH, SAFETY AND DESIGN RISK ASSESSMENT

PRELIMINARY DESIGN STAGE

Choa Chu Kang Drive

Owner/Developer : CAMBORNE DEVELOPMENTS PTE LTD

Architect : ADDP ARCHITECTS LLP

C&S Consultant : PARSONS BRINCKERHOFF PTE LTD

M&E Consultant : SQUIRE MECH PTE LTD

Quantity Surveyor : RIDER LEVETT BUCKNALL

Landscape Consultant : ONG & ONG PTE LTD

Interior Design : INDEX DESIGN PTE LTD

Main Contractor : NAKANO SINGAPORE PTE LTD

THE PROJECT TEAM


Site Area 17,589.80m2

Plot Ratio 2.8

Max Allowable GFA 52,723.67 m2

Total No. of Blocks 8 Tower

Building Height 3-21 Storeys

Total No. of Units 466 units

Floor to Floor Height 2.95 m

N

SITE LOCATION AND PROJECT DATA

SITE

SITE


SITE PHOTOGRAPHS

PROPOSED DEVELOPMENT AREA


VIEW 2

VIEW 1

SITE

SITE

VIEW 1

VIEW 2

VIEW 2

SITE PHOTOGRAPHS


DEVELOPMENT INTRODUCTION

• 8 block of 4 units to core design ( 466 units )

• 3rd storey to 21st storey

• Basement

parking with covered parking at 1st st.

• Entrance from CCK Ave 3.

• North/ South Blocks planning

• Passive Architectural Green

Approach

• Design Concept: Inspire by nature habitation

.

357151621


N

RESERVE SITE

SIT

E

CCK Town

Park

Town Park

Extension

Lot 1 Mall

B

B

Public

Basketball

Court

B

Proposed Site

Park Land

Major

Vehicular Flow

Bus Stops

Pedestrian

Flow

SITE ANALYSIS

Strength & Opportunity

• Entrance away from

main road.

• North-South Orientation.

• Surrounded by Nature,

i.e.: Choa Chu Kang Park.

• Approx. 400m away from

CCK MRT and Lot 1 Mall.

Weakness & Threat

• Biodiversity Impact

• Low AMSL Building

Height Control

• Existing Sewer

• Overhead Bridge

Wooded Corridor

Low density –

less built up

area


BIODIVERSITY IMPACT

Eagle’s nest on Albizia tree

Old eagle’s nest

SITE ENTRANCE

Biodiversity Impact Assessment was carried by Prof Hugh Tan from onset of the project as part of the environment impact

assessment.

Findings:

• 67 species animals,

• 24 species Flora

• Eagle nesting

• Hornet Nest

Site Plan

Actual Site Photo showing Albizia tree


BIODIVERSITY IMPACT Recommendation:

• Existing tree housing the nest is not healthy and is likely to fall naturally in due time.

• Eagle pair appear to has migrated or completed the use of the nest due to seasonal change.

• Removal of the Tree and hornet to avoid potential danger to the public

• To plant more trees and shrubs quickly to keep the northern woodland corridor

• To have suitable planting of right species of flora to attract and retain some biodiversity for future

• To incorporate eco ponds to bring back wildlife such a dragonfly.

Site Plan


Hammock Court

LUSH LANDSCAPING APPROACH

• More trees and shrubs will be planted quickly particularly along the northern boundary of the site.

• emphasis on using indigenous flora to populate the landscape within the development. This will help in promoting and reintroducing the use of native species in the landscape design.

• integrated a bio-pond in the landscape which would not only add aesthetic value but contribute to the future biodiversity of this newly established landscape.

Design Implementation :


LEGEND

25M TO 80M AMSL BLDGHEIGHT CONTROL

VARIATION OF BUILDING HEIGHT CONTROL

Design Impact

1. High Plot ratio with height limitation poses site planning constraints

2. Stepping Roof design needs to review M&E screening with more care i.e. aesthetics and visual comfort.

3. Higher blocks viewing into the lower block roof may have indirect heat .

4. Structural beams/slab size have to be considered head room constraints


Mitigation

1. Design low

density and

open spaces

of at least

than half the

site to reduce

impact , to

create spatial

relief and

sufficient

building to

building

setback

VARIATION OF BUILDING HEIGHT CONTROL

25m


ROOF

TERRACE

Mitigation

2. Units design

with roof terrace

to encourage

green living and

help to reduce

the radiance

heat

3. Provide

screening for

M&E space


VARIATION OF BUILDING HIGH CONTROL

EXISTING SEWER LINE

CROSS-SECTION

S

1350 ø Existing Sewer Pipe

3m Kept free of Structures

BASEMENT

CARPARK

Basement setback

to safeguard the

sewer and allow

open cut

basement

construction

-TO SET BACK FROM EXISTING SEWER LINE


EXISTING SEWER LINE

Basement setback

more to mitigate

construction impact to

neighbouring

development.

EXISTING SEWER LINE AND BASEMENT DESIGN

Basement setback to

safeguard the sewer and

allow open cut basement

construction

2.8m high ceiling clear

path for loading/unloading


VIEW 2

SITE

VIEW 2

OVERHEAD BRIDGE

SITE

Overhead Bridge along

Choa Chu Kang Drive

Design Impact

1. Overhead bridge

need to consider

privacy and noise

issues .

Mitigation

1. Blk 341 setback

more than to

provide green buffer

for privacy and

noise mitigation.


S

LEGEND

MORE GREEN BUFFER AND BUILDING SETBACK ATBLK 341 NEAR OVERHEAD BRIDGE

OVERHEAD BRIDGE

About 4.1m more setback 10m building setback requirement


BUILDABILITY SCORE

• Buildability: The extent to which the design of a building facilitates ease of

construction as well as the extent to which the adoption of construction

techniques and processes affects the productivity level of building works.

• Buildable Design Score: The score for buildable design computed in

accordance with the Buildable Design Appraisal System (BDAS) as set out in

the Code of Practice.

• 3S Principles of Buildable Design

- Standardization - repetition of grids, sizes of components and connection details

- Simplicity - uncomplicated building construction systems and installation details

- Single integrated elements - those that combine related components together into a single element that may be prefabricated in the factory and

installed on site.


TABLE: MINIMUM BUILDABLE DESIGN SCORE FOR NEW WORK

CATEGORY OF BUILDING WORK

MINIMUN BUILDABLE DESIGN SCORE

2000m2≤GFA<5000m2

5000m2≤GFA,25000m2

GFA≥25000m2

RESIDENTIAL (LANDED)

63 68 71

RESIDENTIAL (NON-LANDED)

70 75 78

COMMERTIAL 72 77 80

INDUSTRIAL 72 77 80

SCHOOL 67 72 75

INSTITUTIONALAND OTHERS

63 69 72

GFA – GROSS FLOOR AREA DESIGNMENT DEVELOPNMENT OF CONSTRUCTION PROJECT BY CCW

BUILDABILITY SCORE CALCULATION






GREEN MARK

- Lunched in January 2005

- BCA green mark is a green building rating system to evaluate a building for its environmental impact and performance.

- Towards more environment-friendly buildings

- Intended to promote sustainability in the built environment and raise environmental

awareness among developers, designers and builders when start project

conceptualisation and design, as well as during construction.

• The assessment criteria cover the following key areas:-

– Energy efficiency

– Water efficiency

– Environmental protection - This category focuses on the design, practices and selection of

materials and resources that would reduce the environmental impacts of built structures.

– Indoor environmental quality

– Other green features and innovation

- MOSTLY GREEN MARK REQUIREMENT IS CONTRIBUTER BY ARCH LAYOUT AND M&E SYSTEMS


ENVIRONMENTAL PROTECTION

(i) Use of precast toilets :

(ii) Provision of green roof and roof top garden :

(iii) Provision of vertical greening :

(iv) The provision of double refuse chutes for separating recyclable from non-recyclable

waste

(v) The use of non-chemical termite treatment system such as termite baiting system,

anti-termite mesh.

(vi) The provision of at least 5 nos. of compost bins to recycle organic waste.

(vii) Use of non-chemical water treatment system for swimming pools.

(viii) Fine and/or coarse aggregate used for concrete production of structural

application are replaced with recycled products from approved sources.

(viv) Concrete Usage Index (CUI)=Concrete Volume in m3/Constructed Floor Area in m2


GREEN MARK

OTHERS GREEN FEATURES AND ANNOVATION

(i) Provision of landscape drainage and infiltration trenches :

(ii) Provision of system to recycle surface runoff from the vertical green wall and

sky garden :

(iii) the use of siphonic rainwater discharge system at roof.

(iv) the provision of eco-pond.


GREEN MARK

PRECAST ELEMENTS:

Wall/column, Beam, Slab, Balcony, Parapet, AC ledge, Refuse chute


• C&D waste to RCA

GREN MARK- GREEN FEATURES-Recycled Concrete


STRUCTURAL SYSTEM

• Bored piles are adopted for foundation

• Bored pile length vary from 30m to 45m

• Faster with relatively less vibration and noise pollution

FOUNDATION


BASEMENT CONSTRUCTION


STRUCTURAL SYSTEM

• Open cut excavation highlighted in red

• Reduces construction time and costs

• Lean concrete for slope protection

• Ground monitoring and instrumentation

• Temporary sheet pile wall with temporary strutting in some areas

highlighted in blue

• Strutting required due to difference in level between basement and

adjoining sites







SECTION VIEW OF TYPICAL INSTRUMENTATION MONITORING


SUPERSTRUCTURE SCHEME

• Flat slab is adopted for

superstructure

• Only perimeter beams are

required therefore leaving the

living space beam free


SECTION VIEW OF TYPICAL BALCONY


STRUCTURAL ANALYSIS

SECTION VIEW OF TYPICAL BATHROOM & TOILET


SECTION OF BASEMENT AND E-DECK AT SWIMMING POOL AREA


SECTION VIEW OF RETAINING WALL AT EASTBOUND


SECTION VIEW OF RETAINING WALL AT WESTBOUND


TYPICAL FLOOR PLAN


STRUCTURAL ANALYSIS

ORION ANALYSIS MODEL


STRUCTURAL ANALYSIS

TYPICAL FLOOR SLAB DEFLECTION (ULTIMATE LOAD)


STRUCTURAL ANALYSIS

TENDER AND DETAIL DESIGN STAGE


TYPE OF CONTRACTS

• PUBLIC SECTOR STANDARD CONDITIONS OF CONTRACT FOR CONSTRUCTION

PROJECTS- PSSCOC

(FOR DESIGN AND BUILD)- MOSTLY PRIVATE PROJECTS-

• SINGAPORE INSTITUTE OF ARCHITECTS STANDARD FORMS OF CONTRACTS- SIA -- FOR

GOVERNMENT PROJECTS

• LTA CONTRACTS – LTA PROJECTS

CONTRACT DOCUMENTS ARE PREPARED BY QS.

HOWEVER, EACH CONSULTANT NEED TO PROVIDE SPECIFICATIONS FOR BUILDERS

• MAIN TENDER SPECIFICATIONS – NATIONAL PRODUCTIVITY AND QUALITY

SPECIFICATIONS (NPQS)

• PARTICULAR SPECIFICATION –

- SCOPE OF WORK, STANDARDS AND REGULATION, SITE PROTECTION, SITE ACCESS

USAGE, MAINTENACE AND PREPARATION, SITE SUPERVISION, VERIFICATION OF INFORMATION,

TEMPORARY WORKS & SITE EXCAVTION, UTILITIES AND SERVIVES WORKS, PEST AND POLLUTION

CONTROL, FIRE PREVENTION, SECURITY, TIME FOR COMPLETION, GREEN MARK REQUIREMENT,AS

BUILD SITE SURVEY


AUTHORITY CLEARANCE


SCHEMATIC DIAGRAM OF THE INTERDEPENDENCE OF THE VARIOUS ASPECTS OF

REGULATORY CONTROL SYSTEMS AND TECHNICAL CLEARANCE


AUTHORITY SUBMISSIONS

• BUILDING CONTROL SYSTEM- STRUCTURAL WORK

- BUILDING CONSTRUCTION AUTHORITY (BCA) FOR STRUCTURAL CLEARANCE

• TECHNICAL DEPARTMENT CLEARANCE- CIVIL WORK

- BUILDING PLAN (BP) SUBMISSION TO

– LAND TRANSPORT AUTHORITY (LTA)

– NATIONAL PARKS (NPARKS)

– PUBLIC UTILITY BOARD (PUB) –DRAINAGE DEPARTMENT, SEWERAGE DEPARTMENT

– CENTRAL BUILDING PLAN UNIT (CBPU)


BCA SUBMISSION

• STRUCTURAL PLAN SUBMISSION (ST 01, 02,…)

- FOUNDATION, EARTH RETAINING OR STABILIZING STRUCTURE (ERSS),

SUBSTRUCTURE, SUPERSTRUCTURE Submissions

- Can be submitted before tender awarded/contractor on board

- QP (STRUCTURE), QP (GEO), AC (STRUCTURE), AC (GEO) ARE APPOINTED

BY DEVELOPER/OWNER OR BUILDER

- Design calculation by QP (DESIGN), Checking by AC

• PERMIT TO COMMENCE WORK

• NOTIFICATION OF APPOINTMENT OF SITE STAFF (QP/RE/RTO)


TECHNICAL DEPARTMENT CLEARANCE- CIVIL WORK

BUILDING PLAN SUBMISSIONS- EXTERNAL WORK IS UNDER C&S

• BP Clearance- Based on architects approved BP plan, QP(structure) has to submit another BP plan to LTA, NPARKS, PUB, CBPU-

• As-built submissions for CSC clearance

• End of DLP (defects liability period) submissions

LTA – Land transport Authority

- Enlarge site plan, Longitudinal and Cross sectional profile of proposed road showing Ingress, egress, boxed culvert, approach slab, road curves, road site drains, footpath, lamp post, scupper pipes etc… according to code of practice,

- Traffic Plan

- Swept path analysis and plan

- Traffic impact assessment if necessary

Nparks – National Parks

- Tree/ plants arrangement plan showing tree species with sizes of tree, distance between M&E services


PUB – Public Utility Board

- Longitudinal & cross sectional profile of external road side drains, sump

pits, cut off drains, etc…

- Pre-condition survey – CCTV submission has to be conducted by contractor if

proposed building/piling work is within the 25m corridor of sewer or/and

the 36m corridor of DTSS Tunnel

- Pre-condition survey plan and report endorsed by a registered surveyor showing

the position, sizes, top and invert levels of the sewers and manholes (horizontal and

vertical) in relation to the existing buildings/structures (including wall, drains, etc) and

boundary lines.

- Post- condition survey plan and report after piling done.


ENLARGED SITE PLAN SHOWING ROAD ELEMENTS AND TREE LOCATIONS


TYPICAL CROSS SECTION OF ROAD

ROAD SIDE DRAIN, SIDE TABLE & PLANTING VERGE


LONGITUDINAL SECTION OF ROAD SIDE DRAIN


TRAFFIC PLAN


SWEPT PATH ANALYSIS

Swept Path Analysis is the calculation and analysis of the movement and path of different parts of a vehicle when that vehicle is undertaking a turning maneuver.


CONSTRUCTION STAGE


- CONSTRUCTION ACCESS

- INTERNAL DRAIN AND BIO-SWALE

- BUILDING MAINTANANCE UNIT (BMU) –GONDOLAR SYSTEM

- QUALITY MANAGEMENT

VIEW 2

VIEW 1

SITE

VIEW 2

CONSTRUCTION ACCESS

SITE

2 March 2012-16 March 2012

Erect Hoarding in order not to

disrubt eagle/nest

Protected zone not to disrupt

birds hatching process until

July 2012

Existing eagle nest on

Albizia tree

9 March 2012-30 March 2012

Construct new access. Keep

work activities outside

protected zone


VIEW 2

VIEW 1

SITE

VIEW 2

SITE FACILITIES

SITE


Albizia tree

May 2012

Build site facilities to

complete before end May

2012

2 April 2012-21 May 2012

Mobilize machinery for

ultimate test pile 3 nos.

Protected zone not to disrupt

birds hatching process until

July 2012


VIEW 2

VIEW 1

SITE

VIEW 2

PILING WORK

SITE 14 May 2012-29 June 2012

Zone 1 piling work

31 Aug 2012-2 Nov 2012

Zone 3 piling work


Albizia tree to be removed

after birds hatching process

2 July 2012-31 Aug 2012

Zone 2 piling work

commences after birds

hatching process

Zone 1

Zone 2

Zone 3


INTERNAL DRAIN PLAN


1ST STOREY (ENVIRONMENTAL DECK)

BI0SWALESWIMMING POOL

TOWER BLOCK (TRANSFER PLATE)

CARPARK

BIOSWALE – EVERY DEVELOPMENT HAS TO COMPLY PUB REQUIREMENT UNDER

ABC SCHEME AND TO COMPLY GREEN MARK REQUIREMENT


ROOF PLAN WITH

BRACKETING SYSTEM

INSTALLATION

BUILDING MAINTANANCE UNIT- GONDOLA ACCESS FOR CLEANING


BUILDING MAINTANANCE UNIT- GONDOLA ACCESS FOR CLEANING


QUALITY MANAGEMENT

• STRUCTURAL QP (PE) APPOINTED RE/RTO AS QP REPRESENTATIVE FOR

STRUCTURAL TO MAKE SURE TO CONSTRUCT ACCORDING TO QP DESIGN

• BCA INSPECTIONS

• CONSTRUCTION QUALITY ASSESSMENT SYSTEM

CONQUAS – MORE THEN CERTAIN PERCENTAGE BONUS WILL BE GIVEN BY

CLIENT

• RI (REGISTERED INSPECTOR) INSPECTION – M&E AND ARCHI ITEMS

• QUALITY MARK (QM) SYSTEM


CONQUAS

• The Construction Quality Assessment System (CONQUAS), introduced in

Singapore since 1989, serves as a standard assessment system on the quality

of building projects.

• The Assessment consist of 3 main components

- Structural Works

- Architectural Works

- M&E Works

• Each component is further divided into different items for assessment. The sum

of the 3 components will give the CONQUAS score for the project.

- base on workmanship standards through site inspection.

- done throughout the construction process for Structural and M&E

Works and on the completed building for Architectural Works.

- includes tests on the materials and the functional performance of

selected services and installation.


• The QM scheme measures the quality of workmanship in each newly completed

residential unit.

• The assessment covers all internal finishes like floor, wall and ceiling finishes,

architectural components and fittings like doors, windows, wardrobes, kitchen

cabinets, vanity tops, bathtubs, water closets, shower screens and basins, and M

& E fittings and switches.

• In addition the assessment will include water ponding test for bathrooms. Water –

tightness tests on windows are optional.

QUALITY MARK (QM)


COMPLETION STAGE

• BCA SUBMISSION

- As-built structural plan submissions

- Certificate of supervision of piling work/superstructure work

- TEMPORARY OCCUPATION PERMIT (TOP)

• TECHNICAL CLEARANCE

- As-Built External work submission

- Application of clearance from LTA, NPARKS, PUB, CBPU

• CERTIFICATE OF STATUTORY COMPLETION (CSC) CLEARANCE


AS-BUILT SITE OBSERVATIONS-LTA


AS-BUILT SITE OBSERVATIONS-LTA


THANK YOU

Documents

SOCIETY OF MYANMAR CIVIL ENGINEERS …smces.org.sg/wp-content/uploads/2014/12/Design-Development-of-Cons...society of myanmar civil engineers (singapore) s m c e s seminar (yangon)