Buttery Road Bridge Project

Buttery Road Bridge Project Construction Planning Basic concept of planning Construction planning is the very basic and fundamental part in determining the success of a project. In order to achieve the goal of Buttery Road Bridge Project, the plan must be established in the very early stage. The purpose of construction planning of Buttery Road Bridge is none other than to unit all the thoughts from various experts, including geologists, structural engineers, electrical engineers, mechanical engineers, computer sciences, and also stakeholders and then generate a single vision in order to achieve the goal of this project. All the stakeholders and experts must sit together and discuss about their designs and thoughts. Those thoughts will be accepted and then those thoughts will be assessed collaboratively until generating the final plan for this project. Generally, there are four basic planning on this project, which can be seen on the diagram below

Cost

Safety

Time

Quality Planning

These four basic planning needs to be divided into smaller portion 1. Technology and construction method.

Generally, this project is included to composite bridge structure which uses steel as the beams and concrete as the slab. According to the place where the components of structure will be produced, the construction method can be divided into two main categories which are in situ and ex situ. 1.1.

In situ Components of structure which are built on site are categorised in this category. According to the planning, the components are footing, Abutment, bearing slabs, concrete slab, and overlay. The concrete will be supplied by batching plan from another party as a ready mix as well as asphalt will be supplied by AMP (Asphalt Mixing Plant)

1.2. Ex situ For the components of the bridge which are built separately, produced in the factory, are included in this category. The components are piles, plate girder beams, and metal parapets. For the beams case, this project will use Plate girder beam. The welding will be conducted on site before erection.

2. Defining work task (work breakdown structure) Along with determining the construction method, the important thing to do is defining the various works and split them into smaller activity. The reason is that the manager can control the activities properly as per the planning. The quantity of every activity is different. It depends on the importance of the activities and the difficulty of the activities itself. The crucial thing how to split the activities is not to divide the activities into smallest portion. There are some advantages of doing the work breakdown structure (WBS), which are:

a. Decrease the complexity of a big project b. Scheduling and controlling c. Cost estimation

d. Cost budgeting e. Risk management planning f. Activity identification g. Quality control After defining the activities which will be carried out during the project, the next task is to determine the predecessor activities and successor activities. In this section, we establish the sequence of activities and put them in order, start from the beginning of the project until the very last activity of this project which is finishing. The sequence of the project must be put logically. Finally, the next step is establishing the duration of each activity. Majority of managers produce duration plan differently due to different background experience they have. The more experience they have, the more accurate and precise the time planning will be. Buttery Road Bridge Project will be divided into 10 divisions of work, and each division comprises of some subdivisions. For each division will be monitored for quality control by the site engineer They are orderly put as shown in Table 1 below: Name of activity Division 1 – Site Clearing - Removing trees and clearing the work place. Division 2 – Foundation work - Production of pile and transporting to the site. - Driving piles into ground. - Setting the bars and formwork. - Concrete cast and curing. Division 3 – Abutment work - Installing the formwork, scaffolders, and the bars. - Casting the concrete, remove the formwork and curing. Division 4 – Bearing pad installation - Bearing slab casting. - Installing bearing pad.

Initial

Duration (days)

Predecessor activity

A

3

-

B C D E

1 2 3 21

A B C D

F

3

E

G

21

F

H I

2 1

G H

Division 5 – Beam welding and erection. - Production of beams and transporting to the site. - Welding girders. - Erection. Division 6 – Diaphragm installation - Installing and bolting the steel profiles. Division 7 – Precast deck plate transporting to the site and erection. Division 8 – Concrete slab work and parapet installation. - Installing the formwork, and the bars. - Casting the concrete, curing, and remove the formwork. - Metal parapet installation. Division 9 – Over lay AC (Asphalt Cement). Division 10 – Finishing. - (lighting, pedestrian pavement, joint expansion (asphaltic plug joint), and safety road utilities installation).

J K L

1 2 1

F J K, I

M N

3 2

L M

O P

6 21

N O

Q R

2 2

P P

S

4

Q, R

Table 1. Division activity on Buttery Road Bridge Project Temporary works The activities on a project which are the works are limited to a certain period of time is called temporary works. Having finished the works, they will not appear in the same project again. Based on the division activity from Table 1, the temporary works are listed bellow: 1. Pile driving using hydraulic press driver 2. Formwork and scaffolder 3. Welding work 4. Crane crawler for beam erection. One of methods that can be used for project planning is Activity on Arrow (AOA). It gives description to the planner about relationship among the activities from the first activity until the project finished. Moreover, it provides the solution how to accelerate the project time.

The diagram for this project shown at Figure 1 below.

Figure 1. The Activity on arrow of Buttery Road Bridge Project From the diagram above, the CPM (Critical Path Method) is A,B,C,D,E,F,G,H,I,L,M,N,O,P,Q,R,S. The total time to finish this project is 94 working days (Monday to Friday). Due to a primary school nearby, The time construction will be divided into two major period which are peak hour and off-peak time. This division time is made with the intention of safety for students. 1. Off-peak hours (8.30 am to 9.00 am and 3.00pm to 3.30 pm)

Time when student go to school and go home. This time either heavy construction or transporting material to the site should be avoided. 2. Peak hours (outside off-peak hours) Time when less student access nearby area. Heavy construction and material delivery can be done.

The information from the diagram above can be presented as the table below Activity Early Early Late Late Total Duration Start Finish Start Finish Float (ES) (EF) (LS) (LF) i j Name (days) (days) (days) (days) (days) (days) 1 2 A 3 0 0 3 3 0 2 3 B 1 3 3 4 4 0 3 4 C 2 4 4 6 6 0 4 5 D 3 6 6 9 9 0 5 6 E 21 9 9 30 30 0 6 7 F 3 30 30 33 33 0 7 8 G 21 33 33 54 54 0 8 9 H 2 54 54 56 56 0 9 11 I 1 56 56 57 57 0 7 10 J 1 33 33 34 55 21 10 11 K 2 34 55 57 57 21 11 12 L 1 57 57 58 58 0 12 13 M 3 58 58 61 61 0 13 14 N 2 61 61 63 63 0 14 15 O 6 63 63 69 69 0 15 16 P 21 69 69 90 90 0 16 17 Q 2 90 90 92 92 0 16 18 R 2 90 90 92 92 0 17 19 S 2 92 92 94 94 0

Free Float (days) 0 0 0 0 0 0 0 0 0 0 21 0 0 0 0 0 0 0 0

Table 2. Information from the diagram of activity on arrow. From the table above, we have the information as follow 1. Activity J and K can be delayed for 21 days without affecting the total amount of time to finish the project (total float). 2. Activity K can be delayed in 21 days without affecting the starting time of the next activity and the total time to finish the project (free float).

Buttery Road Bridge Project Organisation

Client representative

(Project manager) Mohammed

(Planning manager) Adriansyah Siregar

(Partnering manager) Abbas Sirjani

(Value manager) Luiza Fragomeni

(Risk manager) Maryam Alhaddad

(BIM manager) Aisha Almajed

Planning and construction team

Subcontractor and suppliers

Client and value management team

Risk management team

BIM team

How to maximize the performance of team work

A project can run smoothly if people who are engaged in it has the same aim and goal. Each individual in the team has a strength and weaknesses, and also they have different experience along their career. Those weaknesses can be covered by other people in the team who has expertise about it. In a general project, the client and suppliers working together as a team. To ensure this relationship working properly, there are some measures which need to be noted 1. 2. 3. 4. 5.

Individual team member must be able to work collaboratively Clear goal must be understood for every member A Clear group contract and norms must be established before the project started Each individual must strive to present the best work that he can do Team performance needs to be assessed for better work In construction project, there are a number of parties that work corresponding to their

expertise; for example, construction engineers, electrical engineers, manufacturing parties, management engineers, and so forth. Each of those parties will form a chain; for example, consultant planner, site consultant, contractor. Those parties will be addressed as a supply team later on. On the other hand, the client, the owner of the project, will form a chain also to ensure that all the activities in the project run as their wish. These two teams need to be bridged to accommodate the relationship between the two parties. The relationship between supply team and client team can be seen in the figure bellow.