Contractors World

The online digital publication for construction, demolition, mining and quarrying industries.

Contractors World 2010 Volume 1 Issue 5
Forward: Print Page Register (free) Bookmark Page

cw cw cw cw cw Buyers Guide cw cw cw
previous page   PAGE 21   next page
HOME PAGE 

back copies


Sponsor a tree
by planting
your logo
in our
virtual forest
to aid the
Lighthouse Club
Benevolent Fund

 

Pictures on this page: : Bruce Sutherland, City of Cape Town

[SOUTH AFRICA - Engineering the Cape Town Stadium for World Cup 2010 - cont]

 

For lifting the roof elements, a large crawler crane (Manitowoc) was used . For lower levels, access platforms and scissor lifts were very much in demand"The pylons each measure 3 m long x 800 mm wide and their upward and outward slant at 17.5 degrees was particularly challenging.

For lifting the roof elements, a large crawler crane (Manitowoc) was used . For lower levels, access platforms and scissor lifts were very much in demand

 

The construction of the pylons was carried out in 3.8 metre lifts necessitating approximately 12 lifts per pylon. The survey team had to position the formwork for each lift. Due to the weight of the roof, the accuracy of these columns needed to be perfect with very small tolerances.

Maintaining integrity of control was difficult because of the acute upward angles. This would have necessitated working from quite a few different stations around the stadium."


"After discussions with GeoSystems Africa and Leica, we decided to erect a 16.5 m high x 2 m diameter reinforced steel and concrete beacon, right in the centre of the stadium and we then affixed a Leica 1200 robotic Total Station (TCRP to the top of the pillar."

For lifting the roof elements, a large crawler crane (Manitowoc) was used . For lower levels, access platforms and scissor lifts were very much in demand
Trangos says that they were fortunate in that the geometry of the stadium was such that it enabled a full view of the columns from the centre of the stadium. "This immediately gave us several advantages”.

The fully automatic Leica Total Station was controlled from our ground station via radio link so it could be left at the top of the pylon for any period of time. This was ideal as we could take all the necessary measurements of the raking pylons from one position.

This also freed us up to do other survey work inside the stadium. We were also able to utilise the Total Station from its position on top of the pillar when we positioned the steel segments on the roof." [CW]

Size of site - 18.5-hectares
Average number of workers on site
         • 2,600 labourers,
         • 450 supervisory staff
         • 65 package subcontractors
Tension cabling - 7.4 kilometres of steel cabling in the stadium roof
Roof glass - Covers 45,000 m² and there are about 9,000 pieces of glass
Weight of roof - 4 500 t.
Highest point of stadium roof - 55 m
Materials
         • 130 000 m³ of concrete
         • 390 000 m² of formwork
         • 12 000 t. of reinforcing steel
         • Six million bricks

Videos © Produced by Communication Department, City of Cape Town, South Africa

Contractors World appreciates and acknowledges the assistance given by Murray & Roberts and the Cape Town Government Departments.
All photographs in this article are the © copyright of Murray & Roberts and/or Cape Town Government
and/or Bruce Sutherland and may not be copied or used for any purpose without express permission.

 

brochures
videos

 

previous page   PAGE 21   next page

 
red divide
CW Contractors World - the digital publication for construction industry

Contractors World Magazines are published by VVV Limited
©VVV Ltd 2010 All Rights Reserved

Publisher: Roger Lindley
Content compiled and edited by:
Roger Lindley MCIM
Nick Johnson

CP&E Contractors Plant & Equipment
Read our other publication for up-to-date information on new plant and equipment.
CLICK HERE


cmldir.com
Online Buyers Guide of Construction, Quarrying & Mining Suppliers

Contractors World - Eco Friendly publishingBy reading this page on line you are helping to save trees.
Trees saved up to June30, 201: >80
See our
virtual forest


Support the Lighthoue Club Benevolent Fund by sponsoring virtual trees Support the Lighthouse Club Benevolent Fund by sponsoring virtual trees

CONTRACTORS WORLD MAGAZINES
CML House
7 Bell Mead
Sawbridgeworth
Herts CM21 9ES
UK
Tel: +44 1279 600598
Email: info@cwmags.com
URL: http://cwmags.com

To advertise in Contractors World see details at   http://www.contractorsworld.info/support/advertising-uk.php

Contractors World, CP&E - Contractors Plant & Equipment and the CW Supplements are independent publications published through CWMags.

The mention of companies and/or products within the editorial pages or in advertisements does not infer any endorsement by the publisher or editors. All editorial is freely given, without conditions and at the sole discretion of the editor. Opinions expressed by contributors are not necessarily those of the publishers. Copying, reproduction, decoding or disassembly of content or computer code by any means of any part of the publication is prohibited unless prior approval is provided by VVV Ltd in writing and confirmation received of agreement with any terms and conditions applicable. PDF version may be downloaded for personal use but no content may be used for promotional purposes or copied to web sites.