CORNICHE DOHA at NIGHT

Photo courtesy of HARI DARMOJO

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PROJECT MANAGEMENT SERIES - The easy way to understand project management concept, process, and technique : PREFACE

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Managing the project is not easy, it will require project management skill that do not come naturally to us. Project management skill will need long learning and experiences, since it is not talking about mathematic that 1+1 = 2 . It is not only the matter of method, system, and finance but it is also touching human resources and other knowledge area.

Many guidlelines and method has been developed and published by many organization, but project management work in some form has been occurring for as long as people have been doing complex work. When the Great Pyramids at Giza in Egypt were built, somebody somewhere was tracking resources, schedules, and specifications in some fashion.

Sometime (in my opinion), all those guidelines and method look too complicated to be understand. Moreover for individual person that does not directly involved or does not have any experiences on implementation of the project, it will be sound theoretic and get them boring.

Therefore, this project management series will step by step provide the concept, process, and technique which will effortless to follow which is targeted toward individuals that need to understand project management. This project management series will refer to A Guide to the Project Management Body of Knowledge (3rd edition, published by the Project Management Institute, 2004) - now and after will be defined as PMBOK and TenStep method in accordance with my personal comprehension and experiences.

This project mangement series will tentatively have content as follow :

PREFACE

SECTION I - PROJECT MANAGEMENT OVERVIEW : History, definition, and approach

SECTION II - PROJECT MANAGEMENT FRAMEWORK

SECTION III - PROJECT MANAGEMENT KNOWELEDGES AREA, consist of 9 knowledges area including the extension area of PMBOK.

Publishing will be done chapter by chapter to http://construction-method.blogspot.com/. Any comment toward this subject may be please addressed to constructiongate@yahoo.com

Best Regard,

The CONSTRUCTION Gate

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Bridge Concrete - Balanced Cantilever Casting Method

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Source : Prestressed Concrete Bridge Built By the Cantilever Method, Philippe Vion - Emmanuel Bouchon

Pioneer of balanced cantilever method of concrete bridge erection is acknowledged to be Eugene Freyssinet who designed three bridges in Venezuela on the highway Caracas - La Guaira, which were erected 1950 - 1953. It was originally developed to eleminated the using of false work or temporary support which may wholly disallowed due to on-site restrictions.

Balanced cantilever method can eliminates such diffulties with construction proceeding from permanent piers with strucutre self. It can be further divided into cantilever launching method and cantilever casting method.

Cantilever Launching Method Source : Prestressed Concrete Bridge Built By the Cantilever Method, Philippe Vion - Emmanuel Bouchon

Cantilever Casting Method Source : www.dywidag-systems.com

In order to get clear picture of the construction process of balanced cantilever method, let we refer to construction of approach bridge as part of SURAMADU bridge (Read Previous Article Suramadu Bridge Part I - The 18th Segment of Main Bridge is Finally Connected)

BALANCED CANTILEVER CASTING METHOD - APPROACH BRIDGE, SURAMADU

Source : http://www.suramadu.com/

Upper Structure Presstressed Box Girder 7 Span @ 80 m lengh for both Surabaya and Madura Side. Foundation : Bored Pile D. 180 cm with average length 60-90 m.

CONSTRUCTION of PIER TABLE

The work sequencing of constuction of pier table as follows :

Installation of bottom support and bottom formwork

Installation side formwork




Placing of steel reinforcement, pouring concrete (2 stages) and vertical stressing.



CONCRETE BOX GIRDER

The cast-in-place concrete segments called for a form traveller. After completion pier tables two traveling shall be installed at each pier to begin the girder construction. The Form traveller consist of the following parts :

- Main trust stimuler system

- Bottom basket system

- Suspension system

- Formwork system

- Anchoring sysem

- Moving system.

Formwork system consist of side formwork, inner formwork, and diafragma formwork. Placing of rebar shall be done in simultaneously with formwork installation. Cast in-place concrete shall be done after installation of rebar and duct.

Stressing will be the fundamental activities which will determine the succesful works.




For complete detail, see the following presentation :

MORE ABOUT BALANCE CANTILEVER CASTING METHOD

Prestressed concrete bridges built by the cantilever method, Design and stability during erection by Philippe Vion - Emmanuel Bouchon

Review of cantilever casting method for long span reinforced concrete arch bridge, Bin-jia PEI, Rui CAO, Dong NIE & Guo-bin XIONG Sichuan Road & Bridge Group, China

Precast segmental box girder, Beach at Key West

Cantilever Erection of arch bridges by Željko ŽDERIĆ

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Suramadu Bridge Part I - The 18th Segment of Main Bridge is Finally Connected

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Source : www.suramadu.com

The 18th segment of main bridge as part of Suramadu Bridge, also known as the Surabaya-Madura Bridge is finally connected on April 1, 2009.


Suramadu bridge with three cable-stayed sections will connect Surabaya on the island of Java and the town of Bangkalan on the island of Madura in Indonesia. The bridge will be the first to cross the Madura Strait.

The bridge will have two lanes in each direction plus an emergency lane and a dedicated lane for motorcycles. When scheduled to be completed on June 2009, the 5.4-kilometer bridge will be the first land link between the two islands and the longest bridge in Indonesia. The cable-stayed portion will have three spans with lengths 192 m, 434 m and 192 m. The total cost of the project, including connecting roads, has been estimated at 4.5 trillion rupiah (US$390 million).

The remaining works which is targated to be completed on June 2009 are :

- Approach bridge in between causeway and main bridge of Surabaya side

- Connecting road of Madura side.

Suramadu bridge have 4 main part of structures :

- Connecting road

- Causeway

- Approach bridge

- Main Bridge

CONNECTING ROAD

Surabaya Side

Madura Side

CAUSEWAY

Upper Structure PCI Girder 36 spans of Surabaya side, 45 spans of Madura side with @ 45 m length.

Foundation : Steel Pipe D. 60 cm with average length 25 m of Surabaya side and 27 m of Madura side.

APPROACH BRIDGE

Upper Structure Presstressed Box Girder 7 Span @ 80 m lengh for both Surabaya and Madura Side.

Foundation : Bored Pile D. 180 cm with average length 60-90 m.

MAIN BRIDGE

Upper Structure : 2 twin pylons with 146 m height, composite double plan slab which are supported with three span cable stayed with length 192 m, 434 m, and 192 m.

Foundation : Bored Pile D 2.4 m with average lenght 80 m.

ANIMATION

Source : www.suramadu.com

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Penang Bridge - The Longest Bridge in Asia 5th Largest in the World

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Photo courtesy of Nazia Ahmad Newaz

BRIDGE OVERVIEW
The Bridge was built by the Government at a total cost of RM800 million (excluding the cost of land acquisition). With 3 interchanges, the 13.5 km Penang Bridge of which 8.4 km is above water was officially open to public on 14 September 1985. It has 533 spans of which 192 spans for the Bridge is above water, (Penang Bridge SDN BHD).


Constructed with a 6.2 km dual carriageway and 2.2 km three lanes at the Main span, this Bridge is the only physical link between the Mainland of Peninsular Malaysia and Penang Island. Seen from the Penang Island interchange, the channel crossing consists of elevated bridge structures known as "Cable Stayed Concrete Girders". Being famous landmark in the country, Penang Bridge has contributed significantly to the development of Penang both as a tourist and industrial centre, (Penang Bridge SDN BHD).

Photo courtesy of Nazia Ahmad Newaz

The Penang Bridge is no doubt one of the many architecture wonders of Penang. Ranks as the longest bridge in Asia and 5th largest in the world, the iconic bridge that took 5 years to complete was the beloved bridge for every Penangtes. It marks the new milestone that brings Penang closer to the world attention, (http://www.penang-vacations.com/

BRIDGE INFO

Ideas & initiated by the late Tun Abdul Razak, the 2nd Prime Minister of Malaysia in 1960s The Bridge was planned during the term of 3rd Prime Minister, Tun Hussein Onn in 1970s.

Built during the 4th Prime Minister, Tun Dr. Mahathir Mohamad in the 1980s and finally opened to traffic in 14 Sept. 1985.

Year Built : 1982
Year Completed : 1985
Project Duration : 3¾ Years
Bridge Design Name : Cable Stay Concrete Girder
Main Contractor : Hyundai Engineering & Construction. Co. Ltd, Korea
Consulting Engineer : Howard Needles & Tammen, Bergendoff Intl. Inc. SA/JK(SEA)

(Source : Penang Bridge SDN BHD)

BRIDGE DETAIL

Length

Overall : 13.5 km (8.4 miles)Over Water : 8.4 km (5.2 miles)

Viaduct & Approach

Penang Island: 1.5 km (1 miles)Prai: 3.6 km (2.2 miles)Carriageway: 4 lanes (6 in future)

Height

Tower Above Water: 101.5 mBridge Above Wate : 33 m

Span

Main Span :225 MetersEnd Span : 107.5 MetersOther Span : 40 Meters Total Width Dual Lanes : 18.25 mThree Lanes : 25.75 mLane Width : 3.75 m

Design

Median Barrier : 1.25 m Edge Barrier : 1.0 mDesign Speed : 80 km/hrMaximum Gradient : 3.0% Land Reclamation Main Land : 250 AcrePenang Island : 100 Acre

(Source : Penang Bridge SDN BHD)

FACILITIES
24-hour closed circuit television (CCTV) camera installed at 9 locations along the laybys and main span. The CCTV cameras are connected to Penang Bridge Communication Centre. There were 5 units CCTV camera installed at mainland and 5 units at Penang Island to enhance traffic monitoring surveillance service and response time to serve users in time of incident or congestion.

The Bridge are also equipped with 12 emergency telephones (ET) which are located along both bounds at 1.2 km intervals on Bridge laybys and the Main span. This facility allows communication between ET call box and the control center at PBCC. Motorists who are in need of assistance can call our BRIDGELINE at 1300-1300-03. Our 24-hour bridge patrolling vehicles can handle minor breakdowns. There are 12 laybys on the Bridge of which 1 breakdown layby each at Prai (mainland) and Gelugor (Island).

10 lanes for motorcycle and 14 lanes for other classes of vehicles that give motorists a choice of two drive-through options using SmartTAG and Touch ‘n Go.

(Source : Penang Bridge SDN BHD )

MORE ABOUT PENANG BRIDGE
Penang Bridge Info
Sightseeing with Google Satellite Maps
Penang Bridge Animation

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Change Control

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Change control during construction stage is very fundamental to successful delivery project. There are so many reason of changes, the most common reason is to accomodate a change in the client's requirements. Other reason is to comply with changes of public authorities; resolution of project coordination problems; correction of errors or conflicts in the plans or specifications, etc.

"Change control is a process or guide that is introduced at the beginning of your projects and outlines how changes will be implemented and what is acceptable change and what is not. Change control doesn't change the scope of the project. If the scope of the project requires a change that is acceptable, meaning it is something that should be included in the project, your change control process should outline how change will be implemented"(How to Implement Scope & Change Control in Your Project, Article by JSCheid, March 2009)

Read the following articles to answer in detail what is change control, how to implement in your project :
http://www.4pm.com/articles/pmtalk3457.pdf
http://www.epmbook.com/scope.htm
http://www.trimitra.com/articles/projectchangecontrol.html
http://www.jlab.org/div_dept/directorate/proj_mgmt/manual/800change.pdf
http://www.brighthub.com/office/project-management/articles/29708.aspxhttp://www.lbl.gov/Ops/assets/docs/PMO/PMO%20Procedures/PMO-1.9%20Change%20Control.pdf

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Equipment for Sale : Sumitomo AllTerrain Crane 1995, Tadano Allterrain Crane 2002

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SUMITOMO ALLTERRAIN CRANE
MODEL NO. SA1200, SERIAL NO. 120-0019, YEAR : 1995/05, KMS : 82838, HOURS : 10198
CHASSIS : FAUN
PRICE : JPYEN 50,000,000 CIF DUBAI

TADANO ALLTERRAIN CRANE
MODEL NO. AR1200M-1, YEAR : 2002/02, KMS : 26923, CRANE HOURS : 2548, CHASSIS HOURS : 1771
CHASSIS FAUN, CAPACITY : 120 TON
PRICE : JPYEN 90,000,000 CIF DUBAI

For any information required, feel free to send email to constructiongate@yahoo.com

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