The document outlines details for an economic development workshop, including project managers and engineers involved. It provides assumptions for the development, such as the pedestrian walkway and number of lifts. Benchmark information is given for a similar development project in Singapore called Asia Square Tower 1, including its construction cost, floor area, and green building certification.

1. Building Economic /
Development
Economic Workshop

2. GS City Group
Development Manager Wilson Lai
Construction Manager Vivian Tan
QS Manager Yong Seen Yee
Leasing Manager Zane Chew
Market Specialist Voon Sze Lun
Architect Yap Hong Wai
M&E Engineer Yong Boon Xiong
C&S Engineer Yee Algel
FM Manager Yeoh Pooi Ching
Assistant Wong Geng Sen

3. Assumption
• Good market condition.
• Pedestrian walkway assumed to be “inclusive of excavation, crusher run, sub base, DPC, concrete imprint, 2
layers BRC, guiding blocks, galvanised SHS including mass concrete footing and solid polycarbonate roofng and
trusses.
• 6 No. of lift for Tower 1, 4 No. of lift for Tower 2, Total 10 No. of lift. Double deck lift with VVVF and Regenerative
Drives.
• The external wall of the building will be using Green Facades.
• Above level 4 use curtain wall
• Sky garden will be using green system such as biodiverse systems.
• Currency exchange rate = 3.09 (SGD – RM)

4. BENCHMARK: Asia Square Tower 1
Client : BlackRock Property Singapore
Location : 8 Marina View, Singapore
Type : Office Tower
Height : 28.9m (43 storey)
Construction Cost : 1 Billion SGD
Gross Floor Area : 133,120m2
Cost per m2 : 751.20SGD/m2
Green Building Index : Green Mark Platinum Award

5. Office
3,500m2
1,500m2
Office Tower B (Mid Rise)
Elevated Carpark (2 levels)
32 levels
15 levels
office
Office Tower A (High Rise)
Retail space

6. Sky Garden
- Both tower roof top

7. Structural System
• Precast concrete building frame
• Bored pile foundation
• Flat Roof
Office
3,500m2
1,500m2
Office Tower B (Mid Rise)
Elevated Carpark (2 levels)
32 levels
15 levels
office
Office Tower A (High Rise)
Retail space

8. Special features for GBI/Green RE
• LED Lighting
• Energy Management System.
• PV Panels
• Rain water harvesting system
• Variable Voltage Variable Frequency Elevator Drives
• Regenerative Elevator Drives
• Natural lighting
• Natural Ventilation

9. ACMV Systems
Air conditioning system
• Variable Refrigerant Volume Air Conditioning.
• Efficient and Flexible.
Mechanical Ventilation
• Personalized Ventilation (PV) + Underflow Air Distribution (UFAD)
• UFAD is suitable for hot climate
• PV provides better air quality and comfort while eliminating “Cold Feet” issue caused by UFAD.

10. Total Development Costing
GDV 8,093,520,000.00
GDC 1,732,461,717.50
Development value 6,361,058,282.50
Payback period 3.89
ROI 367.17%