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Basement Construction: Types, Methods, and Design

Added on -2019-09-23

This article discusses the types, methods, and design of basement construction for an office building with a retail complex and 1 level parking in the basement. It also covers the Newcastle Urban Transformation and Transport Program and the recommended poured concrete walls type basement. The article includes information on shallow foundations, isolated foundations, strip foundations, mat or raft foundations, and pile foundations. It also provides a sample plan view and building model view of the basement, as well as a 3D sample of the basement. The article concludes with a sequence of construction for the project.
| 17 pages
| 3398 words

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IntroductionThe Government of New South Wales has launched a program named Newcastle Urban Transformation and Transport Program Transport for NSW (TfNSW) is the main public transport agency of the Government of NSW. The main purpose of this policy is to give and issues the policies regarding the all the models and kind of transportation that will help the commoners to travel in the city. It also helps the local bodies to plan and construct the roads to commute easily without any traffic related infrastructure in NSW. The main reason why we are doing this project and making report about it is to present the necessary technical information regarding the project like the construction of the building and the techniques to be use for its construction. The main purpose of the said report is to present the design and construction of structure of the most compatible basement foundation for the commercial retail project. Transportation to NSW is responsible for improving the transportation customer experience service, transportation policy and regulation, planning and administration of programs, transportation and infrastructure services and freight. The Program has an objective to attract people back to the city center by reinforcing connections between the waterfront and the city, providing job opportunities, creating more public places and spaces, and developing better transport. The official governed body has also announced the proper budget for the construction and management of the building and that is of 500 million dollars. The company wants to build an office with retail complex and the 1 level parking in basement and for that purpose they acquire a land at Honeysuckle, Newcastle CBD. 1
Abasementis a structural portion of abuildingthat is either partially or completely below the natural ground level. From a structural perspective of a common man, one may think that all the basements are designed equal. But the reality is that each basement design has its own pros and cons. They can be at different levels according to the requirement of the building and the purpose of the basement to be use. In this office building, we need basement for the parking purpose. For any work for basements, construction regulations are applicable and cover areas including ventilation, drainage, roof heights, waterproofing, electrical wiring, water supply, and means of escape and so on. See the construction regulations for more information.The basement can be subdivided into three categories, depending on their location, construction time in relation to the property superstructure above ground and depth. A brief outline of the differences and the main issues corresponding to each of them are described below.Types of Basement:1.RefurbishmentIt may be necessary to lower the floor to increase the space of the head, holding adjacent walls,increasing lighting as well as ventilation. It commonly involves improvements to existing or a newwaterproofing system, and replaced finishes and accessories. The benefit of this type of basement is thatit adds value to the property and also provide the more usable space.2.New Garden BasementNew basement can be constructed adjacently to the already existing property, usually in a garden orbackyard space new structure under the ground, with green roof planted or terrace at garden level. 2
3.Retrofit basementThis type of basement is generally used in the existing buildings. In this type of basement what we do is we retrofits the existing floor by creating new more space under the existing floor. It gives more space to the existing building, which can be used for the different purposes as per the demand and the design.Common types and methods of Basement construction, which we use:As per the site condition and the client demand there are many types and methods of basement construction, which we use and will discuss now. The main necessity of any basement is its foundation it provides strength and base to the basement to withstand all the necessary loads. The base or foundation of the basement not only give resistance to the different loads but also support the building to withstand against different climatic condition, say, wind load, earthquake (dynamically affects the building) load, snow load (in specified areas according to the government recommended codes). As per the above-mentioned conditions we have many kinds of methods to construct a basement but the most common are stated below: Poured concrete wallsBlock, masonry wallsPrecast panelsThe poured concrete walls or RCC walls basement: In this type what we do is we use RCC retaining wallsto withstand all the loads of the building and also the dynamic loads. In this type of construction, the firststep is to excavate the site for constructing the base of the basement. After that they cast the preferred sizes of the walls as per the design. It is a very common and easy choice that most people prefer.Block or wall of masonry in this type of construction we use the concrete blocks for the wall constructionit is also the least expensive for the basement walls. To increase resistibility of the walls sometimes we 3

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