Various Flat Slab Systems Advantages and Disadvantages of Flat Slabs. There’s also the fact that homebuyers love granite countertops. iii) Simpler arrangement of reinforcement. One of the fundamental items is what do your neighbors have? In flat plate system, construction of large span is not possible. Copyright 10. Principles. No stirrups or web reinforcement are required. ... You can find an eye-catching slab of granite with veining and color that stands apart from the pack. One-way in-situ solid slabs are the most basic form of slab. Crawl spaces are notorious for housing wildlife and feral cats as well as rodents. 02. Usually, a flat roof is built with a slight slope to provide some drainage. One-way joist system 4. OBJECTIVE OF THE STUDY The General objective of this study is to compare solid slab & ribbed slab for its reliability in Advantages of Ribbed and Waffle Slabs. Relatively lightweight hence economical. Asphalt 2. 3. Not suitable for masonry partitions (Supporting brittle). From “Design Aids for Reinforced concrete to IS : 456 -1978”, the depth of neutral axis, lever arm factor, modular ratio etc. Disadvantages of Solid Slab Bridges 3. It has good finishes and robustness. ii) Smaller thickness of deck thereby reducing the height of fill and consequently the cost of the approaches. Cold applied liquid membranes 7. The speed of construction for such slab is faster compared to conventional slab. Before choosing concrete flooring as an option for your building construction, you should know the advantages and disadvantages of it. To avoid these disadvantages various . Types Of flat slab: Advantages of Flat Slab: Disadvantages of Flat Slab: Uses of Flab Slab: Conclusion: Introduction to Flat Slab: Flat slabs are also known as beamless slabs, it is type of slab in which the floor slab is supported directly on columns without the action of beams or girders. Some of the major benefits of post tension slabs are as follows. Advantages of Solid Slab Bridges: Such type of decks has the following advantages over other type of superstructures: i) Formwork is simpler and less costly. Fairly slim floor depth and fire-resistant. They provide low floor deflections. Concept of hidden beams in a flat slab is meaningless design approach which I have seen used by some contractors (who doesn’t have design experience). • It is not economical for long span. Ribbed floors consisting of equally spaced ribs are usually supported directly by columns.They are either one-way spanning systems known as ribbed slab or a two-way ribbed system known as a waffle slab. Advantages: Saves 30 to 50 % weight compared to a corresponding solid slab – equal stiffness. If a slab is supported on all the four sides but the ratio of longer span to shorter span is greater than two, the slab will be considered as a one-wa… The slab is the flange of the beam and the extended part is the web. Contingent on the necessity and the plan of the design, various kinds of slab, for example, solid slab, level slab, waffle slab and so on can be utilized. 01. Durability. 1.3 Advantages of Two Way Slab: 1.4 Disadvantages: The Two Way Slab is generally supported on all sides of walls or beams and while transferring the loads to the walls or beams it twists or bends in both directions. They are also cost effective and therefore can be found in tract housing. Tweet. be = Kx [1 – (x/L/)] + W ; b/L = 11.03/9.63 = 1.15. Ribbed (Waffle) Slab System . I think that it would be important to make sure that the foundation that you use for your house ensures that your house will be sturdy and that it will last as long as possible. Reduced concrete usage – 1 kg recycled plastic replaces 100 kg of concrete. Homes that are built on slab foundations are generally less expensive. Advantages of Flat Slabs. Commercial buildings generally have flat roofs. In a slab-beam system, the floor/roof consists of beam and slab. Disadvantages of Solid Slab. Loading: Single lane of IRC Class 70-R (both wheeled and tracked) or two lanes of IRC Class A whichever produces maximum effect: Assume an overall depth of slab, D = 675 mm. Advantages of Solid Slab • It is economical for small span • It is suitable for heavy loads or dynamic load • It is easy to repair or strengthen • It is good to hide services such electrical and mechanical pipes. Waffle slabs provide stiffer and lighter slabs than an equivalent flat slab. In conventional slab-beam system, the load is transferred from slab to beam and ultimately beam to the column. It is also seismic friendly as it lowers the total weight of the building. BubbleDeck Design Guide for compliance with BCA using AS3600 and EC231 October 2008. ½ x 6.04 m. = 3.02 m. Although dispersion width along span will remain unchanged, dispersion across span will vary. Advantages and disadvantages of slab foundations are listed. Granite Can Crack. The strength of concrete in tension is very small and so elimination of much of the tension concrete is done by the use of pan forms. Performs just like a traditional solid reinforced concrete slab. Hence no shear reinforcement is necessary. There are many … The reduced weight of the slab will typical result in a change in design to longer spans and/or reduced deck thickness. advantages of mid-rise buildings constituted of waffle slab syst em over the buildings characterized with solid types of slabs, in terms . What are the advantages and disadvantages of concrete floors? Other metals can be used and you will often find asphalt or bitumen coverings. iv) Placing of concrete in solid slab is much easier than in slab and girder or any other similar type of bridges. Slab foundations are very common in areas where the soil is mostly comprised of expansive clay. Before publishing your articles on this site, please read the following pages: 1. One-way slab systems 1. Related. Double-‘T’ on RC/pre-cast beams. Advantages of Post Tension Slab Post tension slabs are advantageous in many ways. Familiarity with local market A. 2. shear, the C.G. There are many pros and cons of using slab foundations. In this type of slab, the tension stress is eliminated in the tension side of the slab. To avoid these disadvantages various . Building height can be reduced. Solid slab on RC beams/bands . Consequently, slab serves both as a heap bearing surface just as a mobile surface. In this type of slab, the tension stress is eliminated in the tension side of the slab. Disadvantages: Medium spans; Generally not suitable for supporting brittle (masonry) partitions Economical where the live loads are fairly small such as apartment houses, hotels. Disadvantages Depth of slab between the ribs may control the fire rating Requires special or proprietary formwork Greater floor-to-floor height Large vertical penetrations are more difficult to handle. The speed of construction for such slab is faster compared to conventional slab. This form of construction is not very common … Homes will have easier access since they are generally built close to the ground. Ribbed floors consisting of equally spaced ribs are usually supported directly by columns.They are either one-way spanning systems known as ribbed slab or a two-way ribbed system known as a waffle slab. There will only be one or two steps to the entry doors. Gas leaks are less likely as well since the pipes will be located outside the home. The main disadvantages of solid slab bridges except for shorter spans are: The design principles of a solid slab bridge deck may be illustrated by the following illustrative example: Design a solid slab bridge superstructure having a clear span of 9.0 metres and carriageway of 7.5 metres with 1.5 metres wide footway on either side for a National Highway. Mat foundation is providing a solid base for many buildings all across the globe. Related Posts. August 11, 2016 August 9, 2014 by Anand Paul. Adding granite to your home can increase its resale value and make it easier to sell down the road. These systems are typically located beneath the floors of a house in the basement or crawlspace. (ii). Use of drop panels may interfere with larger mechanical ducting. Slab Foundation: Advantages and Disadvantages of Houses Built With Slab Foundation. PVC membrane roofing 8. Economic lose in cost and time for large spans. Privacy Policy 8. There are very limited advantages to solid waste. This uniqueness manifests itself in a suite of benefits in structural quality, cost savings, safety, and more. 5. May 1, 2016 - Slab foundation is very common in areas where the soil is mostly comprised of expansive clay. Advantages of Solid Slab Bridges: Such type of decks has the following advantages over other type of superstructures: i) Formwork is simpler and less costly. Slab removal is usually required to repair any utilities such as plumbing or electrical. Houses with slab foundations will have significantly more damage from earthquakes than other homes and buildings. What are the advantages and disadvantages of concrete floors? These systems are typically located beneath the floors of a house in the basement or crawlspace. Recycling is one such advantage where a product (container) can be reused. Grade of concrete is M20 and reinforcing steel is HYSD bars as in the illustrative example 7.1. In a flat slab system, the floor/roof consists of walls/slabs and there are no beams. They are also cost effective and therefore can be found in tract housing. 2. Shear + Footway Shear = 8873 + 6050 + 509= 15,432 Kg. 4. Waffle slabs provide stiffer and lighter slabs than an equivalent flat slab. Principles. Relatively lightweight hence economical. An overflowing toilet will not cause floor joists to become rotted and need replacing. Effective depth, d = 675 – cover – half dia of bar = 675 – 30 – 13 = 632 mm. Advantages of Reinforced Concrete Reinforced concrete has a high compressive strength compared to other building materials. Advantages of Concrete Flooring 1. Effective width for a single concentrated load. Disadvantages of Concrete Slab Foundations . Pre-cast Hollow core on RC/pre-cast beams 3. Sunita Vellapally 29 November, 2020 19:00. III. Bubble Deck can span far longer than a solid slab (20 to 40 times the deck thickness) in all directions, … Slab Beam System. Ribbed Slab +(# [math]Advantages[/math]): is a slab system which consists of series of parallel reinforced concrete T beams framing into reinforced concrete girders. Main reinforcement is provided in only one direction. vi) Cost of surface finish is less than girder bridges. Every project has its own pros and cons that require precise judgmental approach for deciding the methodology and mechanism of construction process. At the current time, the static modification to the flexural stiffness is applied. Structural behavior wise, the so called hidden beam is going to deflect along with slab. Bubble Deck - PDF Document - Share and Discover . Such type of decks has the following advantages over other type of superstructures: ii) Smaller thickness of deck thereby reducing the height of fill and consequently the cost of the approaches. Advantages of Solid Slab. Basic permissible shear stress as per clause 304.7.3 of IRC:21-1987 for M20 concrete is 0.34 MP. ... You can find an eye-catching slab of granite with veining and color that stands apart from the pack. 2. Advantages of Solid Slab Bridges 2. It can be very heavy. Shear + L.L. Ribbed or Waffle Slab System – Advantages & Disadvantages. A properly constructed floor will outlast most of the other components of the building. GRP r… By Taracon Precast August 17, 2018 January 17th, 2019 No Comments. Stiffness. Labor, excavation and forming costs are lower since the concrete slab is built on grade over undisturbed soil. Slab foundations are very common in areas where the soil is mostly comprised of expansive clay. All normal systems and duct work including heating, ventilation and air conditioning will have limited access. Post tensioned slabs can also be used in parking garages and stadiums because it is more economic in a sense that is uses a smaller depth but still creates the same strength. Advantages of Ribbed and Waffle Slabs. Modified bitumen 5. 20% concrete reduction in other components. TOS 7. It is recognized that Flat Slabs without drop panels can be built at a very fast pace as the framework of structure is simplified and diminished. Solid slab on RC beams/bands 2. 02. Disadvantages of Concrete Slab Foundations . Therefore, the following design parameters are used in the determination of depth and reinforcement of the slab. There’s also the fact that homebuyers love granite countertops. 01. Pin It. Show More. At Taracon Precast, we are dedicated to creating products unique to the construction world. August 11, 2016 August 9, 2014 by Anand Paul. Long concrete slabs are advantageous in many ways and cons of using these slabs in your home flexural... The buildings characterized with solid Types of house foundation – basement, Crawl Space to grow mold property owners those. This site, please read the following pages: 1 be cheap, this will have significantly more from! 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