G8 Part 1 R2 030709

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HDB LIFT UPGRADING PROGRAM

D&B OF UPGRADING PROJECTS FOR G8B

ARCHITECTURAL

DESIGN

ARCHITECTURAL DESIGN

- PROJECT BRIEF

- DESIGN APPROACH

- LIFT PROPOSAL

- PRIVACY

- DESIGN CONSIDERATION

- CONSTRUCTION

- HOME IMPROVEMENT PROGRAMME

(HIP)

- SITE MANAGEMENT

- DESIGN PROPOSAL

PRECINT A

PRECINT B

PRECINT C

PRECINT D

PRECINT E

PRECINT F

STRUCTURAL DESIGN

DESIGN CRITERIA & LIFT SHAFT DESIGN

M&E DESIGN

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DESIGN & BUILD LUP + HIP FOR

HOLLAND CLOSE PRECINT

INTRODUCTION DESIGN SCOPED&B OF UPGRADING PROJECTS FOR G8B

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HDB LIFT UPGRADING PROGRAMINTRODUCTION DESIGN SCOPE

PROJECT BRIEF

The Design and built proposal for G8 involves Lift

upgrading Program (LUP) for the following Precinct;

Precinct A

Bedok North Avenue 3 Blocks 401 to 404

Precinct B

Ang Mo Kio Avenue 4 Blocks 108 to 111

Precinct C

Ang Mo Kio Avenue 1 /3 Blocks 221, 222, 229 to 235

Precinct D

Ang Mo Kio Avenue 3 Blocks 301, 302, 322 to 327

Precinct E

Commonwealth Avenue West Blocks 410 to 412

Precinct F

Holland Close / Avenue / Drive Blocks 6, 9 to 13, 40 to 43, 45 to 47 and;

(HIP) Home Improvement program for

Precinct G

Holland Close Blocks 31 and 32


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1.0 DESIGN APPROACH

1.1 The solution derived for the project is a result of close co-ordination and integration of the expertise of the various professional disciplines, focusing on achieving a most optimal ‘value engineering’ solution meeting all fundamental requirements, standards set by HDB. Most importantly, to ensure design is meets stringently to all mandatory building bylaws set by the relevant authorities, and also be able to address security and privacy issues thru well integrated design features.

1.2 The LUP’s proposal consists of new lift shaft constructed primarily of steel structure and cladding panels. Fundamentally, the choice of construction methodology is to achieve speedier and neater construction process. Due consideration is also given to environmental friendliness thru usage of material selection which are recyclable and deriving good detailing for ease of construction, as well as mitigating future maintenance cost.


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2.0 LIFTS PROPOSAL

2.1 The location for the new lifts, shutting down of existing lifts and replacement of new lifts, generally shall complies with the given design brief.

2.2 Each new lift locations shall be designed within it’s specific site constraint, such that ventilations and setback meets the requirement stipulated by FSSD.

2.3 Ramps of not more than 1:12 shall be provided to bridge differences in levels or to replace existing steps where occurred, in comply with the barrier free accessibility code stipulated by BCA.

2.4 Careful studies and planning shall be make to each individual blocks to ensure disruption to existing infrastructure and inconveniences to the resident are minimize.

3.0 PRIVACY

3.1 This is an important design consideration, which fundamentally, the new lift position must not open within the sight of the dwelling units windows and doors compromising the resident’s privacy. The lift shaft should also be strategically plan such that views and ventilation to the dwelling units are nit affected.

3.2 Where there is occurrence of angled view into the window of the dwelling units, design features like vertical louvers screen/fins wall shall be strategically placed to cut off visibility, yet maintaining cross air flow through the new lift lobby.


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3.3 PROTECTION FROM KILLER LITTER

Generally, this is to mitigate risk of falling litter to any existing facilities or amenities that is located within close proximity to new lift lobbies. As a rule of thumb, such amenities within 5m radius of the lift lobbies shall be relocated.

4.0 CONSTRUCTION

4.1 The use of mainly steel materials and aluminiumcladding shall contribute to a speedier and neater construction process, being that most work will be fabricated and constructed offsite and installed on site. Upon the installation of the new steel frame, the cladding shall follow consequentially, to avoid the image of the incomplete steel frame of the lift shaft. The proposed construction methodology will result in a reduced time frame for the construction period, and also entail a more efficient and safe working environment within the estate.

4.2 Existing trees will be required to be pruned or removed, where affected by the new lifts. However, every attempt will be make to minimize tree felling, where possible.

4.3 Survey shall be conducted on underground Services, and shall be diverted at the first phase of the work, if determined to affect the new lift position.

.4.5 Detailed Planning and Construction Phasing shall be planned to run concurrently within the dwelling units to reduce the construction period. Proper co-ordination and close liaison with the residents during the execution of the work shall be the primary focus by the contractor’s management team.

5M5M


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5.0 HOME IMPROVEMENT PROGRAMME (HIP)

5.1 materials specification + Quality

Essentially, Materials and products proposed for the HIP shall comply with the specification stipulated under the contract and the requirement set by HDB.

Material’s selection should also consider high durability and easy maintenance. The followings are a summary of items included under HIP;

1) PVC sliding or Bi-fold door to toilet

2) Sanitary Ware and sanitary pipes replacement

3) Ceramic wall and floor tiles (HDB approved type)

4)Aluminium Glass louvers window

5) New aluminium clothes drying racks

6) Replacement of pipe socket

7) Aluminium refuse chute hopper

.

6.0 SITE MANAGEMENT

A well managed site shall be the key success to the

project execution, and minimising inconvenience and

disturbance to the resident.

The use of mainly prefabricated steel structure will

contribute to a neat and tidy site, as such materials are

fabricated off site and will have very quick installation on

site. Where possible, prefab components will be

encouraged to reduce on site casting works. Proper

hoarding shall be maintained at all time to allow a safe

pedestrian routes at all time.


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SITE LAYOUT PLAN

BEDOK NORTH AVENUE 3 block 401- 404DESIGN PROPOSAL

PRECINT A


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BLOCK 401 & 402TYPICAL GROUND FLOOR PLAN

BLOCK 403 & 404TYPICAL GROUND FLOOR PLAN


PRECINT A


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TYPICAL GROUND FLOOR PLAN


PRECINT A


TYPICAL UPPER FLOOR PLAN

ELEVATION OF LIFT

Entrance Canopy and canopy will be provided

Privacy fins and ledge to be provided on the upper floors

Full wall tiles on ground floor up to the edge of staircase

Tile bands to typical floor lift lobbies and entrance canopy will be provided

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BLOCK 404


ARTIST IMPRESSION


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SITE LAYOUT PLAN

ANG MO KIO AVE 4 blocks 108 - 111DESIGN PROPOSAL

PRECINT B


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BLOCK 108TYPICAL UPPER STOREY FLOOR PLAN

BLOCK 111TYPICAL GROUND FLOOR


PRECINT B


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BLOCK 110TYPICAL GROUND FLOOR PLAN


PRECINT B


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DESIGN PROPOSAL

PRECINT B



ELEVATION OF LIFT





ANG MO KIO AVE 4 blocks 108 - 111

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BLOCK 111


ARTIST IMPRESSION


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SITE LAYOUT PLAN

ANG MO KIO AVE 1/3 blocks 221,222, 229 to 235DESIGN PROPOSAL

PRECINT C


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BLOCK 221 & 222TYPICAL UPPER STOREY FLOOR PLAN



PRECINT C


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PRECINT C


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BLOCK 232, 233 & 235TYPICAL UPPER STOREY FLOOR PLAN


PRECINT C


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DESIGN PROPOSAL

PRECINT C



ELEVATION OF LIFT





ANG MO KIO AVE 1/3 blocks 221,222, 229 to 235

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BLOCK 233


ARTIST IMPRESSION


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LUP B7 ANG MO KIO AVE 3 blocks 301,302,322 TO 327DESIGN PROPOSAL

SITE LAYOUT PLANPRECINT D


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PRECINT D


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BLOCK 327TYPICAL UPPER STOREY FLOOR PLAN PRECINT D


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PRECINT D


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PRECINT D


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BLOCK 302


ARTIST IMPRESSION


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SITE LAYOUT PLAN

COMMONWEALTH AVENUE WEST blocks 410 to 412DESIGN PROPOSAL

PRECINT E


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BLOCK 410, 411 & 412TYPICAL UPPER STOREY FLOOR PLAN


PRECINT E


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BLOCK 410


ARTIST IMPRESSION


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SITE LAYOUT PLAN

HOLLAND CLOSE blocks 6, 9 to 13, 40 to 43, 45 to 47DESIGN PROPOSAL

PRECINT F


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BLOCK 6 & 9TYPICAL GROUNDFLOOR PLAN


PRECINT F


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BLOCK 11TYPICAL GROUNDFLOOR PLAN


PRECINT F


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PRECINT F


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PRECINT F


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BLOCK 47TYPICAL GROUND FLOOR PLAN


PRECINT F



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PRECINT F


Existing 3 steps located at the upper

storey does not allow for barrier free

access to the common corridor as well

as does not allow a new lift opening to

be created at one of the existing lift

shaft. The creation of a single ramp to

replace the steps proves to be too long

and will also stretch beyond the

nearest main door opening of the

nearest dwelling unit. Our proposal is

to raise the floor level of the existing

corridor landing leading in front of the

new lifts and create ramps on both

sides of the common corridor so as to

shorten the length of ramps created for

better barrier free accessibility.

Lift Upgrading Proposal

EXISTING 3 STEPS TO BE REMOVED

TYPICAL UPPER STOREY PLAN

NEW STEPS

RAISED FLOOR LEVEL

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PRECINT F


Existing 3 steps located at the upper

storey does not allow for barrier free

access to the common corridor as well

as does not allow a new lift opening to

be created. The creation of a single

ramp to replace the steps proves to be

too long and will also stretch beyond

the nearest main door opening of the

nearest dwelling unit. Our proposal is

to raise the floor level of the existing

corridor landing leading in front of the

existing lifts, and create ramps on both

sides of the common corridor so as to

shorten the length of ramps created for

better barrier free accessibility.

Lift Upgrading Proposal

PROPOSED

RAISING OF

FLOOR LEVEL

NEW RAMP

NEW LIFT

NEW LIFT

EXISTING

STEPS TO

CONVERT

TO RAMP

TO RECTIFY THE EXISTING BEAM TO MEET

THE MINIMUM HEADROOM CLEARANCE

REQUIREMENT OF 2 METERS

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