College of Engineering
Department of Civil and Architectural Engineering
(Summer_2018_CVEN399_30193_L02) Practical Training L02
Final Technical Report
Name: Taha Ahmad Afaneh
Instructor: Mohammed Hussein & Mohammed Elshafie
Date of submission: 05-08-2018
Table of Contents
Project short descriptions: 4
Explain assigned duties: 5
Problems we faced in the project: 5
Problem 1: 6
Problem 2: 6
Problem 3: 6
Daily work development/progress: 7
Link between practical experience with theories learnt at university 9
Slump test: 9
Quantity take-off 10
Multidisciplinary Experience: 10
Table of figures
Figure 1: overall project while constructed 4
Figure 2: structural plan for the substation and oil tank 5
Figure 3 : checking the reinforcement 5
Figure 4: curing the roof concrete 5
Figure 5: Shuttering works 5
Figure 6: poor concrete bonding 6
Figure 7 : getting ready for the layer 1&3 compaction test 6
Figure 8: compacted soil 6
Figure 9: during pour the concrete. 7
Figure 10: Number of jacks before pouring the concrete. 7
Figure 11: Number of jacks after the shutter moves. 7
Figure 12: Company ID 7
Figure 13: Safety Stickers 7
Figure 14: concreting the fire walls 8
Figure 15: lifting the shunt reactor from the truck 8
Figure 16: transferring the shunt reactor to the foundation 8
Figure 17: place the shunt reactor on the foundation 8
Figure 18: Install the water proofing rolls at the oil tank 8
Figure 19: Steel and shuttering work 8
Figure 20: Slump test in the university 9
Figure 21: Slump test cone 9
Figure 22: Slump test in BS EN 10
Figure 23: measuring the sample results 10
Figure 24: installing shunt reactor accessories 11
Figure 25: Transferring oil to the shunt reactor 11
Figure 26:excavate for the earth cables 11
On summer 2018, I started the practical training in Qatar construction and engineering (QCON) as a site engineer. I Started from 28-06-2018 till 09-08-2018.
Qatar Engineering & Construction Company (QCON) is the leading National EPC & Maintenance Contractor in the Oil & Gas, Petrochemical, Fertilizer and Power industries.
QCON is a multi-discipline industrial Engineering & Construction Company, capable of delivering total solutions to its clients in the Oil & Gas industries.
To focus on the specific needs of its clients, QCON operates through its three divisions:
• Industrial Projects.
• Maintenance Services.
• Mechanical Fabrication.
In this report I will present all things that I have done during my summer training at (QCON) in one of their projects in Doha as a subcontractor “Figure 1”
Figure 1: overall project while constructed
Project short descriptions:
The project name: METRO PHASE 1 SYSTEMS ROLLING STOCK AND TRACK WORK
Client: Qatar Railways Company
Main contractor: MMHKT consortium
Sub-Contractor 1: ABB
Sub-Contractor 2: QCON (Qatar construction and engineering)
Project Budget: 2,000,000 QR
Project Area: 500 m2
Project duration: 3 Months from 28-5-2018 to 22-8-2018
Project description: Construct a substation and an underground oil tank “Figure 2”.
Figure 2: structural plan for the substation and oil tank
Explain assigned duties:
When I started my training, the main task for me was asking questions about anything that I don’t know in the project. If I didn’t ask daily, the engineer will ask me about several things, that he knows that I don’t know anything about them. He will let me search and explain them to him as a punishment, all this to make sure that I am learning everyday new things.
In addition, looking after workers and make sure that they are doing the work in a good and neat way. Furthermore, calculate the quantity of concrete and reinforcement for the oil tank “Figure 4 & Figure 5”. Moreover, before pouring the concrete I should check the reinforcement and make sure that is exactly same as shop drawing “Figure 3”. In last 2 weeks I was the only site engineer in the project. This is because other engineers started to work in a new project so, the project manager let me act as a site engineer starting from July 28, 2018 till now. The assigned tasks in those 2 weeks is to make sure that all activities are going as scheduled, solving any problems happen and report everything to the project manager.
Problems we faced in the project:
Problems usually happens in any project, dealing with it and solve it is the engineer work “engineer solves problems” There were a lot of problems that we face it in this project.
Problem 1: Poor bonding between the old and new concrete “Figure 6”. According to what we took in testing materials course, this happens due to bad shipping and bad cleaning.
So, we solved it by repair the concrete (applying cement at the poor bonding spaces) and make sure to make a good shipping and clean it well for other concrete works next time.
Figure 6: poor concrete bonding
Problem 2: I ask to the quality control (QC) to request for the compaction inspection for the compacted soil (layer 1 ; 3) “Figure 7 & Figure 8”. He asks the site admin to request but he didn’t, so the backfilling was delayed for one day because of this silly mistake, the QC should arrange for the compaction test by himself.
Problem 3: On August 2, 2018 we have prepared ourselves to pour the manhole neck with concrete, shuttering and supports are already fixed. We didn’t request for a pump we will do it manually because its small area and no need for it also to save money. We started to pour the concrete suddenly the shutter started to move. So, we stopped pouring and bring more jacks to support the shutter and then we continue. “Figure 9” This problem happens because of 2 reasons:
1. Number of the jacks installed were small and the load was higher. “Figure 11”
2. Because we did it manually, we can’t distribute the concrete same as we done with pump, so the load will be concentrated in one place. “Figure 10”
Daily work development/progress:
Before I started my training, I went to the admin office, they gave me safety and quality induction. They gave me also the company ID “Figure 12” and the Personal protective equipment (PPE).
On the next day, I went to Mitsubishi Heavy Industries (MHI) for another safety induction and I got two stickers on my helmet. “Figure 13”
Figure 13: Safety Stickers
Then I went to the project, when I arrived I saw them preparing to pour concrete for the fire walls “Figure 14” and I stayed their till 12 AM. This was the first time that I saw how they did pour the concrete, but I still didn’t know what happens around me.
On the next days I started to know what happens around me when the engineer told me to read the drawing, it took maybe a 1 week to read and understand all the drawings, also the engineer was very helpful. Then I started to work as site engineering see what happens around me and asking questions if I don’t know what’s going on. The very critical activity was lifting the shunt reactors “Figure 15 & Figure 17”, the weight of each on is 40 tons, so we made a celebration after we lift them safely and nothing happens to the shunt reactors foundations “Figure 16”.
Also, Water proofing “Figure 18” is considered as important activity. water proofing is used in any underground and tanks, to make sure nothing touch the concrete either underground water from outside or inside.
After the water proofing finished we pour a screed layer to protect the water proof layer from any scratch or damage.
Then we started to fix the steel bars and the form work as the drawing before pouring the concrete “Figure19”. Now we are ready to pour the concrete we can pour the concrete in two ways either by a pump or manually, it depends on the work we have. During pouring of the concrete we must make sure that the shutter is not moving. Also, distribute the concrete in all the structure equally with continuous vibrating.
Link between practical experience with theories learnt at university
Slump test used to determine the hardness and harmonious of concrete paste before curing. The main purpose of the test is to measure the consistency of concrete, also in some construction fields some companies uses some admixtures to satisfy the required results for the slump. The change in slump height will set the change in the ratio of the concrete components. The percentages of used materials in the concrete paste determine the quality, slump ration and strength of the concrete. In testing of materials course in Qatar University we took how to make the slump test (ASTM C 143) “Figure 20 & Figure 21” and how get the results of the tested concrete.
In the field, before pouring the concrete we should make the slump test and check its workability. According to QCS 2014 slump test shall be conducted as the following: “Figure 22”
Then after we did all the above procedures, we got a shear concrete type. Then we measure difference between the highest point of the sample and the rod. The reading was 180mm “Figure 23” which is within the range that are mentioned in the contract (120mm – 200mm).
In Construction management course in Qatar university, we learned how to know how much quantity of a material we need. In the field I did a calculation to know how many drums of painting material we need to finish all the project.
Name Total ordered Usage Balance 1 Drum (liter) Total used liters Total Balance liter liter used in 1 m2 Liter needed in 1 m2
Tank Guard (Epoxy) 20 8 12 10 80 120 0.25 4.05
Penguard texo (Filler) 10 5 5 16 80 80 0.25 4.05
Hard Top (Top colour 5 3 2 20 60 40 0.19 5.4
Primer 5 4 1 13 52 13 0.16 6.230769
Total 40 20 20 59 272 253 1 20
Area of usage paint on Cable trench and oil dike Area of TC ; OT
Cable Trench 140 m2 Trench cover 35 m2
Oil dike 184 m2 oil Tank 105 m2
Total 324 m2 Total Area 140 m2
Needed paints for trench cover in liter Tank Guard Penguard texo Hard Top Primer
8.75 liter 8.75 liter 6.65 liter 5.6 liter
Needed paints for oil tank in liter Tank Guard Penguard texo Hard Top Primer
27 liter 27 liter 20 liter 16.8 liter
Total Tank Guard Penguard texo Hard Top Primer
35.75 liter 35.75 liter 26.65 liter 22.4 liter
There are other disciplines in the site, such as electrical and mechanical engineering. In this Project they are dealing with both electrical and mechanical engineering because of the shunt reactor.
Electrical engineers are responsible for arrange cables found under the ground before excavation and installing the shunt reactors “Figure 24 & Figure 26” . I have already contacted with an electrical engineer to know what is the good spacing to excavate to let them install the earth cables to connect it with the shunt reactor there were an issue that they want to pass the cables through the cable trench while the painters are working there so we agreed but without touching the walls.
Mechanical engineers are responsible for designing, installing of pipes and transfer oil to the shunt reactor “Figure 25”. I have already contacted with a mechanical engineer to move the oil transferring machine to another place to start excavation for the earth cables that the electrical engineer needs. There is no issue happening during the work of electrical and mechanical engineering except that the safety guy told us that while the electricians working in the shunt reactor it is not allowed to work under it, in this case the project will be delayed for 1 week at least because of activities delaying. After discussing we agreed with him to work while the electricians work on the shunt reactor because this will not affect any one’s safety.
In summary, the training was more than I expected, I learned a lot of things such as, pouring the concrete, shuttering work (formwork), curing, slump test, compaction test, compactors, the finishes in general (primer, filler, epoxy, painting and sanding), steel inspection, and look after the workers and make sure the work is going as scheduled. I feel how do they responsible for the all site and any mistake happen or problem how they can deal with it. Taking courses in the university and link it in the field it is such a good idea and I requested to make summer or winter training course yearly to help the students to link, summarize and stick every single information they took it every year.