The flat plate is a twoway reinforced concrete framing system utilizing a slab of uniform thickness, the simplest of structural shapes. The main objective of this report is to present different structural flooring that are intended to be considered by the structural designers in the design efforts during the different coming design development stages for the project of thakher city. They are most commonly used on outbuildings and large structures. For further study download reinforced concrete designers handbook pdf. Generally pt flat slab requires approximately 20 to 35kgm3 of steel compared to that of rcc slabs 80 to 120 kgm3. Flat slab type advantages disadvantages slab tutorials. Flatslab building structures possesses major advantages over traditional. Flat roofs are among the most controversial roofs of all the types of roofs for buildings and homes. Advantages and disadvantages preengineered buildings are basically steel structures, the structural members like columns, roof truss, purlins etc. The use of flat slab structures gives advantages over traditional. The flat roof with a minimum slope of about 3% had to fulfill three functions. Flat slab is defined as one sided or twosided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called drop panels. Use of drop panels may interfere with larger mechanical ducting.
Modern materials have been developed for the bridges that are light, strong, and durable. Fast and easy construction disadvantages of flat slab system concrete slabs are one of the most. Flat slab is defined as one sided or twosided support system with sheer load of the slab being concentrated on the supporting columns and a square. Earlier stripping of shuttering posttensioned slab would be ready for stressing operation when concrete strength achieves 28 nmm2.
Even though they can become damaged, theyre very popular, especially in warm climates. Slab or crawlspace foundations present about the same number of advantages and disadvantages, so the choice you make. For a concrete grade of 35 nmm2, this normally happens on the 5th day after concreting. Property owners in those parts of the county where it freezes for months on end typically opt for a different kind of foundation. The advantages of standardization in manufacturing are cost effectiveness and integration. A flat slab is a twoway reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete. Flat slab seminar report, ppt, pdf for civil engineering.
Vertical penetrations need to be avoided in areas around columns. Explore flat slab with free download of seminar report and ppt in pdf and doc format. A flat plate is a one or twoway system usually supported directly on columns or load bearing walls. They are also used where uses of beams are not required. C slab built monolithically with the supporting columns and reinforced in two or more directions. Pdf traditional reinforced concrete slabs and beams are widely used for building. A flat slab is a twoway reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Flat slabs are mostly used in large industrial structures, parking garages, ramps, warehouse, high rise buildings and hotels.
These are heavy bridges with different bridge deck forms that are lifted with modern construction cranes. In flat plate system, construction of large span is not possible. Drop panels play a significant role here as they augment the. Flat slab types, advantages and disadvantages engineering. Plain or the slab milling is a process in which the plain, horizontal or flat surfaces are produced, which are parallel to the axis of the rotation of the cutter. Advantages and disadvantages of flat slabs a flat slab is a oneway or twoway system with thickenings in the slab at the columns and load bearing walls called drop panels figure 9. Posttensioning, which is a form of prestressing, has several advantages over standard reinforcing steel rebars. Such type of decks has the following advantages over other type of superstructures.
A flat slab can also be refers to as beamless slab, it is a reinforced concrete slab supported directly by concrete columns without the use of beams. There are several types of bridges including beam bridges, truss bridges, and arch bridges. Usually the height of drop panels is about two times the height of slab. Precast concrete floor slab is the most fully standardized precast concrete elements. Constructing a roof garden was a special challenge for the architects of modern movement. The structural depth of a flat plate floor is minimum. Advantages and disadvantages of concrete slab floors hunker. This system is suitable for a direct fix or sprayed ceiling. It allows slabs and other structural members to be thinner. Without a doubt, slab foundations have advantages and disadvantages.
Flat slab types, uses, advantages and disadvantages. Project applications range from residential slabonground to parking structures to highrise condominiums. There are many pros and cons of using slab foundations. Flat slab with edge beamsbands conventional rc or pt introducing edge beams to flat slabs overcomes many of the problems associated with shear at perimeter columns and edge deflection. It is one of the most common forms of construction of floors in buildings.
However if you dont pour concrete then, concrete slabs are another alternative for basement floors and walls. Flat roof advantages and disadvantages lifetime roofing. A plain ceiling is obtained thus giving attractive appearance from an architectural point of view. Bridge construction is a complex process that involves numerous technologies.
Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete t beams framing into reinforced concrete girders. Ribbed and waffle slabs types, advantages, disadvantages. Explore bubble deck slab with free download of seminar report and ppt in pdf and doc format. Peripheral mill cuter is used for performing the slab milling operation. Introduction to composite construction advantages of. Reduced depth of slab helps to increase the floor to floor height of the building. A flat slab is a oneway or twoway system with thickenings in the slab at the columns and load bearing walls called drop panels. The normal process of design and construction is to support the slabs with beams and support the beams with the column. The flat plate floor system requires simple formwork. Bubble deck slab seminar report, ppt, pdf for civil. Pdf deformation of multistorey flat slabs, a site investigation. Utracon structural systems advantages of post tensioning. Every structure has certain challenges that must be met, but when these negatives are proactively approached, their impact to the business and each worker can be effectively minimized. Flat roofs have a unique set of challenges and needs.
It reduces or eliminates shrinkage crackingtherefore no joints, or fewer joints, are needed. What are the advantages and disadvantages between post. The slab is the flange of the beam and the extended part is the web. They raise the shear strength and the rigidity of the floor system against vertical loads, thus the economical span range becomes greater. Generally not suitable for supporting brittle masonry partitions. Flat slab types, uses, advantages and disadvantages daily civil. Recently, a halfpc slab or composite slab was developed to replace existing construction methods, and to improve the performance of a pc slab system a halfpc slab system hpcss is defined as a slab system that is. A flat slab with prestressing tendons pt results in longer spans and thinner slabs. A flat slab stands for a oneway or twoway system with solidities in the slab at the columns and loadbearing walls are known as drop panels drop panels function as tbeams over the supports.
Here is a table below showing the advantages of slab foundations and the disadvantages of slab foundations to provide a clear idea about the topic. These flat organizational structure advantages and disadvantages show us that when it is implemented with a clear plan, it can be successful. Flat slab types of flat slab design and its advantages. Not suitable for masonry partitions supporting brittle. Flat slab definition disadvantages flat slab benefits. Post tension slab advantages and disadvantages of post. Pdf flatslab building is very popular from the aesthetic and architectural point.
The thickness of flat plate slab is higher compared to the typical. Waffle slab purpose, uses, advantages and disadvantages. Advantages and disadvantages of flat slabs civil engineering. Also explore the seminar topics paper on flat slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Flat slab and its advantages and disadvantages civil. Advantages and disadvantages of flat slabs and standard column beam slabs free download as word doc. Waffle slabs provide stiffer and lighter slabs than an equivalent flat slab. Standardization of lathe cutting tool stock sizes and tool post mounts for instance allow tool post. This allows the floor slab to be flat while maintaining a consistent thickness larson and huzzard 1990 advantages of cambering if beams are not cambered top diagram above the deflection under the load. The construction of flat roofs proved to be difficult from the start. Also explore the seminar topics paper on bubble deck slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016.
Concrete is often used to fill the base of a house, create the basement and to make a solid foundation. There are both advantages and disadvantages of using these slabs in your home, though. They improve the shear capacity and the rigidity of the floor system below vertical loads, which consequently enhance the economical span range. Advantages and disadvantages of flat slabs and standard column.
Flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. Pdf comparison study for various structural slab systems. Advantages of rib clay pot slab over solid concrete slab. Guidelines for a twoway concrete flooring system brewer. Unbonded posttensioning is used in all areas of construction, such as new construction, repair, rehabilitation, and retrofit. A flat slab belongs to a oneway or twoway method that is condensed in the slab at the columns and load bearing walls known as drop panels. If you plan to have a flat roof on a residence or building, it is essential to know flat roof advantages and disadvantages. The speed of construction for such slab is faster compared to conventional slab.