CE 1 CAREER EPISODE- 2
1.1 Introduction: -
1.1.1 Boom General Contractors (W.L.L) is a Grade A general contracting and engineering company with Grade A classification with the KAHRAMAA for electrical and Mechanical Engineering work in Qatar. Boom was awarded the Project Design and Build of Three Plaza Area at Qatar Museum Project ” . The duration of project was 10 Months starting from May-2021 to March 2022 . Company assigned me as Senior Mechanical Engineer for the project in charge of execution, testing and commissioning and Final Handing over of all Mechanical work which include – HVAC, Fire Fighting, Plumbing Drainage, Fuel Oil and Medical Gas System.
1.1.2 The project site is located in Thumama Area, Doha Qatar

1.1.3 The name of the organization is Boom General Contractor. The project manager for assigned was Mr Charbel Elia

Contact Details:
Name: Charbel Elia
Email: <PRESIDIO_ANONYMIZED_EMAIL_ADDRESS>
Phone: <PRESIDIO_ANONYMIZED_PHONE_NUMBER>
1.1.4 I held the position as Senior Mechanical Engineer of this Project .
CE 2 Background
CE 1.2.1 The nature of overall engineering project.
The Three Plaza Project scope of works covers the design and construction project involves three plaza areas near the Museum of Islamic Arts. These plazas include landscaped areas with some sports and play facilities. The project includes constructing buildings for each of the three areas, which are designated as the Corniche Frontage, Civic Plaza, and Carston Holler Art Area.
Ashghal (PWA) has issued the D&B of the Three Plaza Areas (Cornishe Frontage, Civic Plaza & Carsten Holler Art Area) in order to create a showcase urban area before the FIFA WC 2022 with the best of public realm, active streets & connectivity with the Qatar Museums Cultural District that originally much larger and fully designed
1.Corniche Frontage Landscape Area = 45000 m2
2.Civic Plaza Area = 30000 m2
3.Carsten Holler Public ART Area = 6000 m2






CE 1.2.2 Objectives of the Project
The objective of the Three Plaza Project is to design and construct three plaza areas near the Museum of Islamic Arts that are aesthetically pleasing and functional. The project aims to create a showcase urban area that provides the best of public realm, active streets, and connectivity with the Qatar Museums Cultural District in preparation for the FIFA WC 2022. The project also includes the construction of buildings for each of the three areas designated as the Cornice Frontage, Civic Plaza, and Carsten Holler Art Area with Water Features, Flag Poles with Misting system. The project will ensure that all necessary utilities and services are in place and fully functional, and that all relevant regulations and guidelines are adhered to. The project’s ultimate goal is to deliver a high-quality and successful project that meets the client’s requirements and exceeds all stakeholders’ expectations

.CE 1.2.3 Project Organizational Chart

Fig 1: Project Organizational chart with my position -1 (ATTACHMENT 1)

CE 1.2.4 Nature of your particular work area
As a Senior Mechanical Engineer, my primary responsibility was to oversee and ensure the successful delivery of all Mechanical, Plumbing, and Fire Fighting services for the project. My duties involved supervising the entire Mechanical works of the project, starting from Project Mobilization, Installation, Testing, and Commissioning, culminating in the final Handover of the systems to the Client/Authority
CE 1.2.5 A statement of your duties
As a Senior Mechanical Engineer, my main responsibilities in this Design and Built project included but not limited to: -
• Attending Project Kick off Meeting with Client and Supervision Consultant.
• Reviewing Project documents which include Tender Drawings, Issued for Construction Drawings, Project specification.
• Reviewing Project Documents and raise design discrepancies. Incorporate consultant and client clarifications and incorporate adequate design changes requires as per the standards.
• Reviewing Tender drawing, IFC drawings and authority approved drawings and highlight the changes to Management and QS department.
• Liaison with MEP consultants, Sub-Contractor, Clients representatives and other agencies involved at project site for site co-ordination.
• Review and preparation of Construction schedule during the progress of site work.
• In charge of preparation of Shop drawings and Material Submittals.
• Preparation of Final Bill of Quantity as per the approved drawings.
• Technical review of Supplier comparison in coordination with procurement team to finalize the materials.
• Review of Material submittals before official submission to client and to take final approval from client/ supervision consultant.
• Preparation of Material delivery schedule and Following up delivery of materials .
• Coordinate with client for the Inspection of materials after delivered to the site.
• Prepare calculations like External static pressure and Head loss calculations.
• Supervision of all site execution works.
• Weekly submit progress reports to the client and to the management.
• Ensure the Safety of workers at site.
• Ensuring that the work is carried out as per the company’s quality standards.
• Completion of the work as per project requirements and obtaining approval from the consultant.
• Prepare for testing & commissioning procedures, Reports and final Testing and commissioning with Client/ Consultant
• Preparation of all the reports required for Qatar Civil Defence inspection.
• Preparation & Submission of As-built drawings to the client.
• Closeout the project and Handover the project to the client.

CE 1.3 Personal Engineering Activity: -.
CE 1.3.1 How you applied your engineering knowledge and skills.
1.Upon finalizing the project, I conducted a thorough review of the Issued for Tender Drawings, Issued for Construction Drawings, Project Specifications, and Scope of Work.
2. Since this was a design and built project all the available drawings where just for reference and single line drawings, I studied the client requirement.
3. I closely coordinated with the design engineers and participated in the design procedures.
4. Once the initial design was finalized I developed the design to a detailed drawing and presented all the design drawing for client confirmation.
5. Using AutoCAD software, I developed precise construction shop drawings, ensuring that all disciplines were coordinated.
6. In parallel, I initiated preparations for the material submittals and finalized equipment capacity.
7. Among the project’s Mechanical items are the water feature, misting system, potable pumps, TSE connections, and re-routing of existing services.
1. Potable Water System Design .
Demand Analysis was calculated based on the below flow rates

Table 3.1 below summarizes the required potable water flow rates and pressure requirements for the project tie‐ins.


Table 3‐1‐required potable water flow and head at Tie‐ins
equipment\buildings Required Flow(L\s) Required pressure (bars)
Misting system 3.00 2.00
water feature Tie‐in 0.70 2.00
drinking fountains 0.05 0.55
hose bib 0.32 0.55

3.1 Potable Storage tank capacity
The proposed potable water underground tank shall be with net effective potable water storage 110 m³. The below table shows the potable water storage calculation.
Potable Water Tank Volume Calculation
Water requirement for Drinking Fountain 0.75 GPM
Water requirement for Hose Bib 5 GPM
Number of drinking Fountain 2 No.
Number of Hose Bib 2 No.
Water requirement for All Drinking Fountain and Hose Bib 11.5 GPM
All Drinking Fountain/Hose Bib Water requirement (working 16 hour per day and contingency 25%)
8280
Gallon
All Drinking Fountain/Hose Bib Water requirement (working 16 hour per day and contingency 25%)
31.3432097
m³/day

Mech. Misting System requirement as received from BGC
21
m³/day
Water requirement Water Feature at CIVIC Plaza (Corniche East) as received from BGC
2.5
m³/day
Total volume of Potable water tank for 1 day 54.8432097 m³/day

Total volume of Potable water tank for 2 day
109.6864194
m³
Total volume of approximate net Potable water tank for 2 day
110
m³

Table 3‐3‐ Potable water Pump data.

Potable water Pump
Flow (Q) 4.44 l/s
Required pumping Head 3 bar

3.2 Head Loss Equations

Hydraulic calculations of head loss in the potable water line were carried out using the Darcy‐ Weisbach equation. The Darcy‐Weisbach equation is as follows:

H = λ x x
Where
H - Head Loss (m)
Λ - Friction Coefficient
L - Length of Pipeline (m)
D - Diameter of Pipe (m)
V - Flow Velocity (m/s)
G - Gravity acceleration
Roughness Height for Potable Water Pipelines – HDPE pipe 0.021 (mm )
The friction coefficient  is related to pipe roughness, diameter and velocity and defined by the Reynolds number. This coefficient is usually calculated using the formula of Prandtl and Colebrook/Karman for turbulent flow in hydraulically smooth and/or rough pipes. Table 1‐2 summarizes the roughness height utilized in the hydraulic analysis of the proposed potable water network.
B . Pump Room Ventillation system Calculation
The pump room ventilation requirement was calculated using sensible Heat Formula.
Water feature pumps:- 10 x 11 kW = 110 kW
Water feature pumps 2:- 2 x 7.5 kW = 15 kW
Water mist pumps:- 5 x 2.7 kW = 13.5 kW
Total power loads for pumps:- 138.5 kW
Heat dissipation in the pump room:- 10% of pump power loads = 13.85 kW
= 47258 BTH
Cooling load formula: - Qs = 1.08 x CFM x ∆T
Given values:
Design temperature @ Pump room = 50°C (122°F)
Ambient temperature = 46°C (115°F)
∆T = 7.2°F
Calculations:
CFM = 1.08 x (138.5 kW x 0.1) / (1.08 x 7.2) = 6077.4 CFM
Convert CFM to L/s: 6077.4/2.11888 = 2866.7 L/s ≈ 2900 L/s
Therefore, the required ventilation rate for the pump room is approximately 2900 L/s.
B . Misting System.
The project involves designing and constructing urban spaces surrounding museums within the Doha Cornice. It includes 52 flagpoles with misting systems that aim to enhance public and pedestrian activities by providing mist and fog effects with temperature reduction around the flagpole areas. This complements the objectives of Qatar Museum’s initiative to promote cultural and physical development for the World Cup 2022.

The main purpose of the misting system is to reduce outdoor temperature and create a unique outdoor landscape with a fog effect. This is achieved by forcing water through specially-designed misting nozzles using a high-pressure pump, which creates a fog with ultra-fine water droplets averaging less than 10 microns in size.

The cooling principle works by billions of tiny water droplets rapidly absorbing the heat present in the environment and evaporating, turning into water vapor and gas. The energy used to turn water into gas is taken from the environment, resulting in air cooling. (Attached below is a misting system diagram for the project.)

So, a high pressure fog system uses nozzles to turn water into mist which creates a cool fog effect. To get the right pressure for this mist, I chose a reciprocating pump which can create a range of pressure from 70 to 100 bar. I picked this pump based on the manufacturer’s data sheet, which tells us the maximum capacity of the pump and the maximum distance it can achieve.


High Pressure Pump Selection @70 Bar
SR No Description QTY Flow per Each Nozzle (L/M) Total Flow (L/M)
1 Stainless steel Nozzle 0.3 mm 30 0.107 3.21
2 Stainless steel Nozzle 0.2 mm 80 0.066 5.28
Total flow rate @70 bar 8.5

High Pressure Pump Selection @84 Bar
SR No Description QTY Flow per Each Nozzle (L/M) Total Flow (L/M)
1 Stainless steel Nozzle 0.3 mm 30 0.15 4.5
2 Stainless steel Nozzle 0.2 mm 80 0.093 7.44
Total flow rate @70 bar 11.94

The High pressure mist Pump selected to be 8.5 to 12 L/M

Once I received final approval from the client/consultant for the pump, I began procurement and installation work





CE 1.3.2 The tasks delegated to you and how you went on accomplishing them
The first step following the selection of equipment and acquisition of consultant approval was the procurement phase. This involved obtaining a variety of quotes from numerous suppliers and creating a breakdown sheet that detailed supplier and manufacturer specifics. These particulars included critical product specifications and requirements for equipment compliance, pricing, and delivery times. Within this procuring process, it was imperative to ensure timely delivery due to the time constraint involved in the project schedule. To enforce this crucial aspect, my communication with the purchasing department was continuous and accurate.

Throughout the construction phase, the primary concern was centered upon the safety of the site team members who were performing the labor in high-risk locations. Therefore, a specialized scaffold platform was constructed to promote the safety of the crew and minimize any potential accidents. As a result of the tight project timeline for completion, workplace safety remained a fundamental priority at all times during the execution of duties.

Upon the delivery of all requisite items, I immediately verified the equipment along with the delivery notes in order to prevent any potential delays in work commencement. Additionally, I raised Material Inspection Requests (MIR) for various initial items like ducts, PEX pipes fittings, GI Conduits, cable ladders, and significant equipment to mitigate any potential issues in the future.

Although proficient in the installation process for all equipment and systems involved in the project, some unacquainted systems, such as the Misting System, required the adaptation of new installation practices. To prepare for the pre-commissioning and commissioning processes for all equipment and the systems involved in the construction, I closely attended to the onset of the start-up procedures while simultaneously seeking input from the manufacturer representatives.

Once all the equipment and systems were successfully tested and commissioned, the final handover documents were produced according to the project specifications. These handover documents included a unique reference number for each item, accompanied by a complete list of tools, spare parts, and maintenance materials necessary. In addition, warranties, guarantees, and As-built drawings were included within the final handover documents.

CE 1.3.3 Any particular technical difficulties/problems you encountered and how you solved them
During the project execution, we encountered several challenges due to the existence of various utilities on the site, including Foul Sewer Drainage Systems, Potable Water Main Lines, Storm Water Main Lines, and Electrical Main Cables that were actively providing services to the Qatar Port Area. Removing any of these services proved impossible, making it quite difficult to execute the construction of our project above the existing services. One of the most significant challenges encountered was working around the existing Irrigation TSE Main Line that was passing through the center of the Flag Pole area. Specifically, the TSE chambers were positioned directly in the Flag Pole area, and they were connected to the TSE tank of Qatar Port, making it necessary to reroute a total of three chambers to install the Flag Poles.

The rerouting process of the existing services, which fall under the authority, was a formidable task that required critical planning and careful execution. To solve the issue within the stipulated timeframe, I invested extra effort and developed a comprehensive method statement that clearly explained the procedures we would follow to reroute the TSE Valve Chambers without altering the Qatar Port irrigation system. The method statement included details of the installation process, as-built survey drawings of the area, and rerouting shop drawings that were prepared and submitted for approval.

Securing the permit for the rerouting exercise was a significant hurdle, requiring authorization from relevant authorities to proceed. I was given a total of 72 hours to execute the entire exercise, which included arranging additional labor forces divided into three shifts working continuously to complete the job on time. Thanks to our efforts, we succeeded in completing the task before the approved time frame and efficiently reconnected the TSE connection, eliminating the possibility of any negative impacts on the Qatar Port irrigation system.

CE 1.3.4 Strategies devised by you including any original or creative design work
The misting system was a new addition to the project, and it was initially planned for 70 flag poles. However, the client later decided to increase the scope to 109 flag poles. To accommodate the misting system, I provided HDPE sleeve pipes for the original 70 flag poles, but when the scope was expanded, I had to use the same 70 sleeves to run the nylon pipe for all 109 flag poles. The installation had to be tightly monitored due to the presence of existing mechanical and electrical services in the area that could not be rerouted. To overcome this challenge, I made an enhanced As-built drawing that identified all the services in the area and the pipe routing. I then created a shop drawing that included all the installation drawings for the complete system within the given time frame. Throughout the process, I closely coordinated with the general contractor, project manager, and other stakeholders to ensure minimal disruption to other ongoing activities in the area. Once the installation was complete, I conducted a rigorous test of the misting system to ensure the highest quality and client satisfaction. Overall, the installation of the misting system was a challenging yet rewarding task that delivered a first-class system that improves the aesthetics and comfort of the area. The attached drawing is self-explanatory and clearly shows the significant amount of misting pipes running underground.
Prepare 1. My view of the overall project , 2. How the project fared in meeting the Goals, 3. How my personal Role contributed to the project in maximum 100 word