8, Jalan 1, Taman Sri Ukay Off Jalan Ulu Kelang, 68000, Ampang Selangor D.E. Malaysia
[ t ] 603-4257 1966, 603-4257 1948 [ f ] 603-4256 1005, 603-4256 9330 [ email ] trhy@trhamzahyeang.com
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Project Name:
Guthrie Pavilion

Client:
Guthrie Property Development Holding Sdn. Bhd.

Location:
Nº 4 Persiaran B, Section U8, Shah Alam, Selangor, Malaysia

Areas:
Nett : 43,726.80 sq.ft. (4,062.20 sq.m)
Skycourts & Terraces 10,000.00 sq.ft. ( 929.00 sq.m)
Services & Circulation 7,263.60 sq.ft ( 675.00 sq.m)
Gross : 60,990.40 sq.ft. (5,666.00 sq.m)
Carparking & Motorcyles 19,967.00 sq.ft. (1,855.70 sq.m)
(
Nº of carbays = 461)

Area covered by canopy:
2,700 sq.m.

Latitude:
3.7 ºN

Nature of Development:
3 Storeys

Date Start:
July 1995
Completion Date: March 1998 (including ID)

Site Area:
26,694 sq.m.


Plot Ratio:
1 : 02

   
Design Features:
This is a 3-storey building with offices on one wing and a golf clubhouse on the other wing. The offices are the HQ peremises for Guthrie Property Development Holding Sdn. Bhd. (GPDH) [ a division of Kumpulan Guthre Berhad]. The company's business is solely in real estate development. The building is intended to be a landmark building and to be the most prestigious building visible from the highway as visitors enter the locality.

The building comprises of 4 major parts:
The Offices (West Wing) - Accommodating Guthrie subsidiary offices.
The Golf Clubhouse (East Wing) - Housing a public Golf Clubhouse with changing rooms, Pro-Shop and Caddy station on the Ground Floor. The Golfer's cafeteria, Golfers Terrace and Restaurant have views towards the golf course.
The Core- Holding the common services for both wings ie. toilets, prayer rooms and M&E plant room, riser ducts and chiller plant.
The Roof - is an independent structure, acting as an "umbrella" over the building. The roof shields the building from the sun, reducing glare and air-conditioning load whilst providing a usable roof terrace overlooking the golf course on the north and east.
 

Sunshades are located along the east and west faces of the buidling to reduce heat again.

The building is fully glazed for maximum views out and natural lighting.

   
Structural System:
The pavilion below the canopy has a reinforced concrete structural frame with glass and panel infill.
The canopy structure is of pre-tensioned cable and pylon steel masts supporting an inflated pillow and canopy. Its primary purpose is to create a physical presence to the locality and to signify its importance as a landmark. The canopy also serves as a second roof over the roof terrace to the pavilion below, offering shading while reducing solar radiation within the building, resulting in 66,283 kw/hr savings in energy consumption per annum.
   
External Cladding:
Tempered float glass, solid aluminium cladding, n.a. aluminium louvres.


Specification for the canopy fabric:
Support Cloth Glassfrabic  
Type of coating PTFE - foil  
Weight - raw total 665 g/sq.m +/ - 10%
1.345 g/sq.m +/ - 10%
DIN53 854
Yarn titre warp EC9 136 x 3 tex
weft EC9 136 x 3 tex
DIN 53 830
Ends/Picks warp 8.0
weft 7.5
 
Weave Panama 2/2 DIN 61 101
Width 1.380 mm DIN 53 851
Thickness 1.10 mm DIN 53 353
Tensile strength warp 4.698 N/5cm + /- 10% DIN 53 354
of scam (80 mm) weft 3.410 N/5cm + /- 10%  
Elongation
(unidirectional)
warp 1.5% + /- 10%
weft 4.3 % +/- 10%
DIN 53 354
Adhesion of foil 50 - 80 N/5 cm  
Internal air-pressure 1.5 Kn/sq.m.  
     
The Canopy Structure:
  The structural system
The roofing system is formed by 2 air-inflated membrane cushions, which are connected at their border to a tubular steel frame. The frame is supported in the interior by a steel skeleton.
The cushion with the elongated shape is called cushion 1, whilest trapezoidal form is cushion 2. Both cushions are supported by hanger cables towards the tops of three tubular steel masts and by vertical stressing cables to the ground or at some places to the building. The cushions are connected to each other by four members. The portion between the 2 cushions is covered by three conical shaped single-layer membrane structures.
   
  Geometry
The structure extends to about 110m maximum length and 51m maximum width. The overall height of the masts is about 40m. The level of the membrane cushions is about 15 to 20 m above ground level. The roof covers in total 2,700 sq.m.
   
  Materials
  Structural steel is Grade 43A
Cables are spiral strand and strand ropes, heavy galvanized, with GALFAN coating, according to specification. They comply with specified Young' Modulus prestressing procedures in manufacturering process. The loss factors for the minimum breaking loads depend on the type of end termination and are 1.0 for molten metal -poured terminals and 0.9 for swaged end terminations.
   
  The overall analysis
The analysis of the total structure is done by using a special Finite-Element-Program. Within this program a finite element formulation is employed for modelling cable and membrane structures with strut and cable elements and triangular membrane elements. The program takes into account geometric non-linearities and large deformations as well as orthotropic properties in principal fabric weave directions of the membrane. The analysis is done as an overall analysis for the total structure including the air supported membrane cushions, the three conical membrane structure, masts, frameworks and cables.
   
  The analysis of substructure
The overall analysis results for the mast forces is carried forward to a conventional framework programme, which is used for detailed analysis of the masts.
   
  The dimensioning
The dimensioning is done by taking into account the minimum and maximum forces in the single members. The compression members are checked against buckling. For the border beams the bending moments due to the membrane stress are dominant and dertermine the sizes of the tubes.
   
  Weights
In the overall analysis the method of taking into account dead weight of the steel, cable and membrane is by factoring the EA-Values (Young's Modulus sectional area). The factors are for steel 0.4 N/m/MN, for cables 0.6N/m/MN and for the membrane 5 N/sq.m/MN.
   
  Wind
The wind loading on the roof of the Pavilion was determined by means of a wind tunnel study by Wacker&Rau Consulting Wind Engineers. To include the influence of the wind onto the masts, an equivalent horizontal load of 30 kN is put on to the top nodes of the mast.
   
  Other loads
The weight of the blowers is covered in each cushion by a point load of 15 kN.
   
  Basic loadcase
LRP : prestress & selfweight
The loadcase indexed with LRP includes the following :
- prestress of the membranes under an internal pressure of 0.35 kN/sq.m.
- prestress of cables
- total deadweight by factors
- weight of blowers 15 kN each.
   
  Design Load
Dead loads
The design of the roof includes weight of the fabric, supporting structure, lighting, catwalk, etc. attached to the roof.
Live loads
Uniform 0.5 KN/sq.m (10.4 psf) over projected horizontal plane. However.both the roof fabric and structural members are checked for a TEMPORARY concentrated load of 15 KN and 100 kg (ONE SUCH LOAD ONLY) which can be placed at any location of the roof.
   
  Wind Loads
Wind loads are in accordance with British Codes of Practice CP 3 Chapter 5 part 2 based on a wind speed of 35.5 metre per second.
   
  Temperature Range
The structure is designed for a temperature drop of 14 ºC. and a temperature rise of 22 ºC from the average day temperature of 30 ºC.
   
  Design Codes
The design codes are according to the Malaysian By-Laws and the British Codes and standards.
   
  Factor of Safety
Factor of safety for overall stability joints and connections shall not be less than 2.0.
   
  Cables
Only cables made from "Galfan" coated wires are used.

Each wire of the cable is treated by Double Dip Galfan Process to ensure maximum protection against corrosion. The wire is first continuosly hot dipped in zinc follow by a second bath in "Galfan".

During the first process, the wires are heavily galvanised with zinc coating to DIN 2078. In the second process the wires are coated with "Galfan" coating to a thickness equivalent to 300gm per square metre.

   
Finishes:
Tempered float glass and solid alim. cladding, galvanised steel staircase, slate to floor, textured concrete on ground level, plaster and paint to walls, mineral fibreboard ceiling.
   
Project Team :  
Principal-in-charge:
Dr. Ken Yeang

Design Architects :
Paul Mathews
Ian Morris

Site RA :
Ian Morris
Anton Pertschy
Richard Coutts
Design Development Architects :
Ian Morris
Idris Clywd
Michael Jamieson

Interior Design :
Ian Morris
Richard Coutts

   
LIST OF CONSULTANTS AND CONTRACTORS
 
guthrie pavillion
roof plan first floor
perspective
southern elevation section
guthrie pavillion
site plan perspective
guthrie pavillion
northern elevation perspective
roof top
top
 
 
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