SCHOOL OF ARCHITECTURE, BUILDING AND DESIGN

BACHELOR OF QUANTITY SURVEYING (HONOURS)

AUGUST INTAKE 2014SEMESTER 1

[QSB 60104] MEASUREMENT 1-Sr. Ang Fuey Lin

[BLD 60104] CONSTRUCTION TECHNOLOGY 1-Pn. Azrina Md Yaakob

[BLD 62003] BUILDING MATERIALS-Pn. Myzatul Aishah Kamarazaly

CONSTRUCTION SITE REPORTINDIVIDUAL ASSIGNMENT

Thun Shao Xun – 0315919

TABLE OF CONTENTNo Title Pages

1. Cover page

2 Table of content

3. Introduction and objectives of the assignment

4. Content/ Technical observation

5. Photos and descriptions

6. Learning outcome / Conclusion

Introduction

This assignment is a combination of 3 different subject which are measurement, building material and construction technology. One week before we visit to the construction site, Ms Ang has told us that on the 21th of november 2014 there will be a construction site visit. Ms Ang had announced to us that day there will be an assignment after we done our site visit. The assignment must be done by 28th of november 2014. On that day we have to wear long pants and long sleeve shirt with our sport shoe and if possible we should wear safety boots to avoid any obligation happen in contruction site

Ms Ang had help us find a contruction site which is just located nearby to our campus. The construction site is D La-Tour Developed by Penang-based DK-MY Properties SDN BHD was located at the following address:No.4, Jalan PPU 3, Taman Perindustrian Puchong Utama, 47100 Puchong, Selangor Darul Ehsan.

We walk to there since it is near to our university. We took around 5 minute to reach the front gate of the contruction site. We reach there sharp at 10 o'clock. Before we enter to the construction site, the site manager ask us to wear our helmet and make sure we must follow the instruction to avoid any acident happen in the construction site. Around sharp at 10.05 am we went in the construction site to take a tour around by the site manager. The site manager explained to us each of everything. The site manager also told us that this project total is RM65 million which is a lump sum contract. We can also can see a clearer picture on the site on how is the technologies look like and also the material that using in the construction site. Beside that we also can take picture inside the site to gain more information.

D'latour comprises of two 23-storey towers with 332 serviced suites in one and 629 SoHo duplexes in the other. It occupies three acres and has a total built-up area of 1.7 million sq. ft. Curving gracefully up into the Bandar Sunway skyline, it is built to master-class quality and infused with the most demanding standards . Comprising two designer towers( D'Latour SoHo and D'Latour Residence),D'Latour is set to become the next big thing in terms of residential landmark in Bandar Sunway.

It one of the kind design features include:•Vertical garden city concept•Internal void area for better natural ventilation•Elevated infinty swimming pool with waterfall feature•Environmental friendly Sky Garden at various at various floors•Roof Top Sky Hub•Distinctive 'Welcome Home' lobby

The designer of D'Latour was the world-class architecture company RDA Harris Architects Sdn Bhd which is responsible for the design of multiple award winning developments around the world.

Objective

–To give us the chance to experience the working environment in the construction site as a Quantity Surveyor in the future

–To understand the safety and precautions on the site of the construction.

–To visualize a clearer picture of the building, machine and material that used in construction site.

–To gain more knowledge on the uses of the machinery on the construction site.

–To know how does the process build up the building.

Content

Once we reach to construction site, we can clearly see that the building is surrounded by the vertical hoarding. The uses of the vertical hoarding is to prevent unauthorized person to enter to the site. Besides that, we can clearly see that the panel about rules and regulation that was placed on the hoarding to make sure that the people who authorize to enter the construction site must always follow the rules if not any injure that happen u must bear it yourself. A small guardhouse that have been constructed and for the purpose of guarding the gate to avoid unauthorized person get into the site.

Before we enter to the site, the site manager told us the safety precaution. He also roughly explained the company and the building itself the D La-Tour. The site manager then bring us into the construction site. In the construction site we can found that there are a lot of thing that we does not seen before. Then we follow the site manager to enter to a pathway that was constructed by timber with side netting that lead to the building.

In the building, the site manager start to explained that the foundation of the construction site. Foundation of this building is micropile. Micropile is another type of pile which is act as a supporting structure to transfer the load from the building to the ground. As the name implies, micropile is small diameter piles constructed by the drilling process and are often keyed into rock. There is various diameter of micropile can be found in the market ranging from 100mm to 250mm. Of late, technological advancement in machinery has made it possible for micropile of much greater diameters to be constructed. After explained the site manager bring us to the basement.

Alongside we walked to the basement, we can see the reinforcement bar that pop out from the slab. Those are post tensioning system that have been use for the whole building. There is another thing we can assure this building is use post tensioning which are there are no beam on top. We can only see there is only column that support the upper floor slab. Telescopic props can be found everywhere inside the building. It is ideal to support all kind of formwork to slabs, beams, walls and columns. Beside that the props also act as safety purpose. Storage also can be found inside the building. The purpose of the storage is to store cement, plaster, lime – dry store free from draughts which can bring in moist air. Aggregates – clean firm base to ensure foreign matter is not included when extracting material from the base of the stockpile. Bricks & blocks – to be stacked in stable piles on a level & well-drained surface; covered with polythene sheets. Roof tiles – to be stacked in pairs, head to tail, to give protection to the nibs.

In this building, scaffold can be found everywhere. There are two type of scaffold which is independent and mobile access tower scaffolding. I can see that most of the scaffold that for the external used is independent. While the internal use are mostly mobile access tower. Independent scaffolds follow the same principal as putlog scaffolds but are 'free standing', putlogs are replaced with 5ft tubes and a row of standards and ledgers are erected on the inside as well as the outside to provide support, in addition diagonal braces are fitted between standards to give stability. The main reason to use independent scaffold is because it does not rely on the building. Moreover it also easy to fix up and easy to dismantle. For the mobile access tower is a gaining access to buildings for maintenance and repair. Assembled from prefabricated components. The reason that why mobile access tower is useful is because it can move everywhere due to 4 castor have been install. Beside that it is stable and rigid.

The three types of formwork that can be found around the site are wall, column and slab formwork.

Beam Formwork- Beam formwork has prefabricated formwork sheeting parts (sheeting bottom and side sheeting panels). Such individual parts are manufactured based on the beam dimensions specified in the project. For prefabrication of the formwork sheeting parts, a special preparation table must be manufactured on site.

Slab Formwork- It consist of sole plates, wedges, props, head tree, planks, batten and ledgers. Slabs formwork rest on battens and joists. If props more than 8 it must provide horizontal braces

Column Formwork- Similar to beam formworks, the sheeting of column formworks is prefabricated according to the column dimensions from sheeting boards connected by cover straps.The sheeting panels are placed in a foot rim which is anchored in the soil by steel bolts.The foot rim consists of double-nailed boards. The foot rim must be exactly measured-in because it is decisive for the exact location of the column. It has the same functions as the thrust-board for foundation or beam formwork.When the sheeting panels have been inserted in the foot rim, vertical arch timbers are placed to take up the forces from the cover straps of the formwork sheeting.

There have three types of material formwork used in this building, which are timber, table and steel formworkTimber formworkADVANTAGE

•Timber is a popular formwork material.•Concrete formwork can be made using only timber or combining timber with other types of formwork material.•Light weight, easy to fix and remove.•Economical

DISADVANTAGE•It is a traditional procurement process.•It needs additional design and engineering time.•Lack of experienced builders and erection crews for this formwork

Table formworkADVANTAGES•Fast construction for large floor layouts.•Fully assembled units can be maneuvered quickly into place.•Using appropriate quality control, high quality surface finishes can be achieved.•Reduced long-term workforce requirement on site.•The need for infill areas and decking joints is minimized.•Individual components of the formwork system can be precisely adjusted.•Repetitive nature of the work makes it easier to plan construction activities.

DISADVANTAGES•Cost of raw materials and cranes are expensive

Steel formworkADVANTAGE

•Has very high reuse rates•Very smooth surfaces are possible

•Strong and can be stripped late•Fast to install in simple walls and likes

DISADVANTAGE•Thicker the surface greater the weight•Steel dents easily•Low versatility•Release agents are demanded

Furthermore, the grade of concrete apply to this construction building is grade 40 concrete. This type of concrete is used because it provides greater strength to the building. The advantages of using grade 40 concrete are it has a relatively high compressive strength and reduce in depth of slab, therefore it reduces cost. While the disadvantages of using grade 40 are it is more expensive and it doesn’t retain the heat well. However in this building, grade 15 is applicable to the column while concrete grade 25 is for the slab. Regardless of the usage of concrete grade 40, another grade of reinforced concrete that I would likely to recommend is concrete grade 30. The advantages of concrete grade 30 are resistance to fire and cheaper than concrete grade 40. While the disadvantages of using concrete grade 30 are lower compressive strength compare to grade 40 and it will easily crack under heavy load.

Pictures and descriptions

Independent scaffolding with safety net

Rules and regulations that can be found at entrance

Temporary works – security (to prevent unauthorized person access to the site)

Column

Telescopic steel prop – it is use to support the upper floor

Reinforcement bar and stirrups

Temporary work – Materials storage

Tower crane – It is a common fixture at any major construction site

Temporary works – accommodation for workers

Uninstall Reinforcement bar that can be found around the site

Reinforcement bar

Polymix – Fine mortar Base (white)

Project information sign board

Sand brick

-Table formwork - A table form is a large pre-assembled formwork, often forming a complete bay of suspended floor slab.

Post tensioning

Starter bar

Group photo for group 2

ConclusionAfter the construction site visit done by us, there are many valuable information and knowledge gained by me. First of all, I have the chance to experience the life being a quantity surveyor. Besides, I have learnt many things that I couldn’t learn from the lectures and textbooks. I now understand better about how a construction site works after the visit.I had seen many materials and tools used during the construction period. The process really impressed me as I have never had the chance to see it that close. This will definitely help us to recognize the materials better in the future.Besides, I realized that communication between workers is very important. This is because every single worker at the construction site is cooperating with each other in order to complete the task given.Furthermore, I had the chance to see how much safety has been emphasized in the construction site. They require every single worker to wear their safety equipment on when they present in the construction site. The safety rules need to be strictly followed by everyone present in the construction site. Moreover, safety precaution signboard were seen everywhere especially at the entrance. A safety officer was there to brief us about the safety rules before the visit began.In conclusion, this visit is amazing for me as it has greatly increases my knowledge about construction site. I am very thankful to have an opportunity to visit there in the first semester. I wish that I could have more chances like this in the future later.