Dubai Sixth Crossing Bridge

Dubai Sixth Crossing Bridge 1

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Institution

Date

Dubai Sixth Crossing Bridge 2

The bridge will connect the international city and the business bay in Dubai. The total

distance covered by the bridge is 1.6 kilometers. The bridge will be supported by 5 pillars; 2 on

the land and three inside the water. The distance between the land and water pillars will be 300

meters while the distance between the pillars inside the water will be 500 meters. The 500 meters

span between the water pillars is to allow for the free passing of ships. The bridge will have a

metro underneath the road. There is a pathway for pedestrians next to the metro. Both the

pathway and metro go through the pillars while the road goes around the pillars. A garden on the

pathway is intended to make the bridge more attractive and aesthetically appealing. Flowers and

grass will be grown on the garden to increase the beauty of the bridge. The sides of the bridge

will have decorations showing the Seven Wonders of the World.

The bridge will have 12 lanes (6 on each side) and will cover a width of 64 meters. It is

estimated that the construction of the bridge will take at least 4 years at the tune of $3.4 billion.

The work should start in 2017 and end in 2021. The bridge is expected to accommodate 30,000

vehicles per hour and will rank among the most prime landmark and unique projects undertaken

by the Dubai TRA. The implementation of the project is in line with the context of the RTA

strategy of keeping up with the urban development drive and catering for both the current and

forecasted requirements of Dubai which is a cosmopolitan city. After all, the RTA is tasked with

curbing the traffic congestion of the roads in the emirate.

RTA Regulations

Construction activities concerning roads and bridges in Dubai are governed by the Road

and Transport Authority (RTA). The RTA sets out guidelines on requirements and standards, to

which all contractors working in the UAE must adhere. These guidelines cover a wide range of

factors regarding the construction such as types of materials to be used, tests to be conducted on

Dubai Sixth Crossing Bridge 3

materials, administration of labor, timelines, disruption effect of the project and the

environmental impact. The effects of these requirements on the construction project are

multifaceted affecting both the cost and time of project delivery. The documentation for the

Dubai sixth crossing bridge has been developed in line with RTA requirements. Some of the

requirements are briefly identified.

Site Office

As per the Dubai municipality regulations, contractors must provide an onsite office for

engineers. The offices need to be fitted with electrical and water supply. The design and

construction need to be waterproof. The regulations further require a specified room size, with

each room having its own doorway. The cost of setting up an office will be classified as an

administrative expense.

Materials

All materials delivered to the site shall require a certificate of guarantee that materials

conform to National Standards. A wide variety of materials will be used in the construction of

the bridge, ranging from steel, concrete, and cement. A temporary warehouse will be set up on

the site. Materials will be stored at the warehouse on a temporary basis. This will help to ensure

conformity with current Dubai regulation, part of which requires that cement should not be used

within two months from the date of manufacture.

Water is another important aspect, whereby water to be used for construction purposes

must meet particular standards. Water will be useful for making and curing cement. We plan to

source our water from delivery to the site, as we believe that this is more efficient than any other

approach.

Dubai Sixth Crossing Bridge 4

The materials used in the construction of a bridge always play an essential role. Some of

the traditional materials used in the construction of bridges include concrete, timber and steel.

All these have undergone enhancements over the years. Nonetheless, the most revolutionary

changes in the materials used for bridge construction are in the areas of high-performance

concrete, fiber-reinforced plastics, high strength and high performance steel as well as the

blending of FRP and timber. While the project designers and engineers would love to use the

aforementioned materials in the construction of the bridge, the cost of the same would present a

challenge based on the budgetary and financial constraints. The idea of building an island was

also ruled out due to the financial implications of the same.

The superstructure of the bridge will be made mainly with reinforced concrete and steel.

The road, metro and pedestrian pathways will be supported on the superstructure by reinforced

concrete beams. The load from the superstructure will be transferred by laminated elastomeric

bearings to the pier cap. The bearings act as load transfer elements and are capable of supporting

the vertical force exerted on the bridge whilst absorbing the horizontal translations in a

simultaneous fashion. The pier cap structure will be made of high strength and high performance

steel as well as high performance concrete. Once the load is transferred from the end of the span

from the superstructure, it is absorbed by the pillars and the foundation of the entire structure.

The pile foundation is preferred for the foundation system of the project. The pile will be

comprised of a slender member that will either be driven into the ground or formed in the group

to provide resistance to the loads. A reinforced concrete mass will be cast on the head of the piles

forming the pile cap which will ensure harmony in the distribution of the load.

Dubai Sixth Crossing Bridge 5

Table 1: COST

Traffic Safety and Control

The new bridge will not, in any way, interfere with current transportation facilities. The

only likely event where such interference may occur is during the delivery of materials.

ITEM/MATERIAL

COST in Billion Dollars

Cement

0.25

Stone

0.05

Reinforced steel

0.3

Elastomeric laminated

bearings

0.01

Sand

0.2

Water

0.07

Plants and garden

0.1

Steel

0.35

Labor

0.85

Other Materials

0.15

On site Construction to house

labor force

0.001

Machinery

0.78

Miscellaneous

0.2

TOTAL

3.061

Dubai Sixth Crossing Bridge 6

Green Construction

Another important aspect of regulation is that governing sustainability. THE UAE

government announced a few years back a new strategy for the city that is in line with the

precepts of having a greener city. Consequently, this will be an important aspect of the

construction during the process. We believe that our plan to have a garden conforms to green

requirements and promotes the goal of having a greener city. The estimated width of the pathway

is 30 meters, with an overall garden space of 20 meters. Thus, the total expected garden size will

be 3.2 ha. The total area to be landscaped is 4.8 ha.

Labor Requirements

Labor costs constitute a major aspect of any activity. Part of the regulation dictating labor

includes the provision of water, labor laws, working hours, and safety and health issues. A

regular record of safety and health shall be kept. Documentation of labor practices will be given

top priority throughout the project.

Further Regulation

It is not possible to individually outline and describe all the regulations applicable to the

bridge project. Further aspects of regulation govern aspects to do with testing of materials,

suspension of work, insurance, loss and damage, and commencement and delays. The RTA sets

out elaborate details regarding these issues.

Landscaping of the bridges pathway

One of the key aspects of the bridge is the pathway, which will feature the Seven

Wonders of the World. The plan is to have these wonders displayed in a linear manner from the

first to the seventh, over the 1.6 km stretch of the bridge. Each wonder will be allocated a portion

of 165 meters along the bridge, with a separation of 60 meters between one wonder and the next.

Dubai Sixth Crossing Bridge 7

Additionally, the first wonder on either side of the bridge will be positioned approximately 60

meters into the bridge.

Project Phases

The project will not be done as a one-off thing but rather, will be carried out in phases.

The breakdown of the project into phases is important as it will allow progress to be monitored

more closely. Moreover, such breakdown also provides an opportunity for benchmarking and

testing of the efficacy of the entire project. Through feedback, the process can then be improved.

For this project, the bridge will be constructed over seven phases. A breakdown of the phases

and a concomitant timeline are provided in the table below.

Phase

Description

Timeline

Construction of Provisional piers

6 months

Drilling of pillars

5 months

Bringing preassembled materials to

bridge deck

5 months

Installation of the circular hangers

6 months

Fixing the hangers to the deck

7 months

Construction of metro system

5 months

Landscaping

10 months (overlapping)

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