How thick is a suspended concrete slab? The ground floor is made up of suspended concrete slab or beam and block floor, supported by the external and internal load bearing walls, which transfer the loads to the foundations below Both precast concrete planks or slabs can be used, as well as cast in situ reinforced slabs along with beam and block systems Beam and block floorGuidance Table 5 Examples of insulation for ground bearing floor slabs Suspended reinforced insitu concrete ground floor slab supported on internal walls Guidance Diagram 10 Typical section through a suspended reinforced insitu concrete ground floor slab supported on internal walls Suspended beam and block ground floors Guidance Diagram 11 Typical section through a
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Suspended slab reinforcement details
Suspended slab reinforcement details- Detailing of a reinforced concrete slab include nominal cover, minimum reinforcement required, the spacing of bars, maximum diameter of bars and the bending schedule Casting and layout of reinforced concrete slab include preconstruction planning, construction practices, and joint layouts and are coordinated by the concrete slab specialist ReinforcedSuspended reinforced concrete slabs are used in many applications in the construction industry The advantage of a suspended reinforced concrete slab is that it is possible to get high strength, but at the same time keep the weight low Concrete slabs can be prefabricated in a factory and then sent to the site, or they can be cast insitu This depends on site conditions and the type of
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Precast suspended slabs are constructed by pouring the slabWhere the depth of infill exceeds 600mm, the floor must be designed as a suspended floor, height (H) of slab above ground level is greater than 4 times the total width of wall (T) difference between floor levels of adjacent structures (H) is greater than 4 times the total width of wall (T) (e) site works and construction Special precautions may be needed to prevent damage to the Unless you have very very close movement joints (obviously unacceptable) you need to reinforce the slab for the tension caused by the restraint to try to control the crack widths RE Suspended Slab Restraint Movement Joints KootK (Structural) I would actually seek to avoid posttensioning in the long direction for scenario #5
Because the slab will bend in One Way Slab Reinforcement Details In one way slab, as one side is greater than the other side, the maximum load is carried by the larger side just so giving main reinforcement comparing to that load carrying side will be adequate To provide adequate support on the larger side, the main reinforcement bar is provided perpendicular to that side or parallel to the shorterInsitu reinforced concrete suspended slabs can be economically designed as flat slabs to Eurocode 2 A flat slab may or may not have dropped sections at beam strips and column supports It may be solid or have a coffered or waffle soffit profile Guidance and the maximum areas of pour and on the location of joints is given in Concrete Advice No 02, Suspended concrete floors
Two way slab Reinforcement Detailing Now Calculate Bar Bending Schedule for Two Way Slab Let's take an example the below twoway slab diagram Main bars are 12 mm in diameter @ 150 mm centre to centre spacing ; A suspended concrete slab is a rectangular, flat and reinforced concrete structure It comes in different shapes and sizes like any other concrete slab but the depth is lesser than others This concrete slab is mainly used in floors, roofs, bridge decks, etc Design There are three major designs for suspended concrete slabs in order to produce the right strength to weight ratio But Hi, I am just arguing with SE over the spec on reinforcement schedule, I feels that its a overkill !
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Any irregularities shall be immediately actioned This method statement describes the working procedures for suspended slab and all related activities This will include formwork, steel reinforcement work, scaffolding, propping / back propping, concreting works and removal of forms, props, scaffolding & supportThis chapter gives guidance on meeting the Technical Requirements for suspended ground floors including those constructed from insitu concrete precast concrete timber joists 521 Compliance 522 Provision of information 523 ContaminantsWith some limitations, reinforcement for slabs can be sized using the Subgrade Drag Theory in order to increase the spacing of control or construction joints The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete ACI 360, "Design of SlabsonGrade", refers to this as a Type B slab The Wire Reinforcing Institute recommends
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Jamthog Beam Details First/Second/Third Floor Slab Section Details Fourth Floor Slab Layout plan Fourth Floor Slab Bottom Reinforcement plan Fourth Floor Slab Top Reinforcement plan Fourth Floor Slab Section Details Fifth/Roof Floor Slab Layout plan Fifth/Roof Floor Slab Bottom Reinforcement plan Fifth/Roof Floor Slab Layout planGet One Month FREE at LinkedIn Learninghttps//bitly/2Zq5t95Full Learn To Read Structural Drawing Course at the cheapest ratehttp//bitly/2Xw0dkvThis vide45 Detailing of conventional reinforcement 15 46 Use of tables given in Section 6 16 50 Design for fire 17 51 Introduction 17 52 Fire resistance periods 17 53 Design for insulation and integrity 17 54 Design for structural adequacy 17 541 Design loads 17 542 Design for strength 17 55 Reinforcement for fire design 17 60 Design tables steelframed construction 19 61 Use of
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Thickness of concrete slab depends on loads and size of the slab In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design Thereof, How does a suspended slab work?Suspended slab 175mm H12 0cc top and bottom (double layer) 2m deep Basement wall 0mm H12 0cc double layer SE is reasoning the soil is clay and it is near the large tree which is taken down about a year ago, but me and Ground workDevelopment length – 40 d;
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Figure B 10 Figure B 10 Alternative Floor Slab Detail The Suspended Reinforced Concrete Garage Workshop Plans Concrete Structural Drawing
A suspended floor is a ground floor with a void underneath the structure The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast insitu with reinforced concrete However, the floor structure is supported by external and internal walls Supports underneath the floor are permanent and RE suspended slab exposed bottom re bar hokie66 (Structural) 19 It depends on the depth of spalling, condition of reinforcement, depth of chloride ingress, and depth of carbonation If the reinforcement is still generally in good condition, it may be just a concrete repair job If not, some reinforcement may need to be addedReinforcement Estimates Typical average weight of reinforcement (kg/m3) in concrete building elements The below figures are for guideline only and may vary for different projects Concrete building element Weight of reinforcement in kg/m3 Bases Beams (lightly loaded) Beams Capping beams Columns (lightly loaded) Columns Ground beams Footings Pile Caps Plate slabs Rafts
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Slab reinforcement should be located near the bottom of the slab, with the main reinforcing bars usually placed first and the secondary bars on top For beams, the main reinforcing bars should be placed inside the links (d) lapping bars and mesh Reinforcing bars or mesh should always be lapped in accordance with their size and type, as indicated by the designer, to ensure that theSuspended slab reinforcement suspended slab reinforcement design suspended slab reinforcement details Modules are often no larger than 3 to 6 feet or 1 Suspended slab reinforcement Hello out there i have an interesting question based on reality Suppose a home was built with a suspended concrete slab The architectengineer specified 6 Concrete slab floorsDetailing of Reinforcement in Concrete Structures RI Gilbert ¾Detailingis often considered to be the preparation of working drawings showing the size and location of the reinforcement in a concrete structure ¾Detailing involves thecommunication of the engineer's design to the contractors who build the structure It involves the translation of a good structural design from
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This approach is discussed in detail in Concrete Society This design procedure is justified by the results of load tests on largescale subassemblies of suspended slabs A partial application of this approach is the design of composite slabs on steel decking where tests to determine the local performance of fibrereinforced concrete, eg around stud shear connectors, have been usedDetail 21 shows a suspended slab with no beam This slab design can only work for a slab clear span of 14 feet which is only good for one car garage, 2 cars if parked behind the other, not side by side To form this type of slab requires temporary beams, columns, and plywood as floor supports for the concrete The forming is very similar to that of framing floor of a house except concrete isA rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 375 m apart The slab has to carry a distributed permanent action of 10 kN/m2 (excluding slab selfweight) and a variable action of 30 kN/m2 The materials to be used are grade C25 concrete and grade 500 reinforcement The slab is outside buildings which subjected to 1 hr
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Ground bearing floor slabs General Is the proposed slab a minimum of 100mm thick Yes / No Note Ground bearing concrete floor slabs should be at least 100mm thick, (including monolithic screeds when applicable) Type of slab Unreinforced Reinforced If reinforced, is the reinforcement and bending schedule available on site?Reinforced concrete slab systems on steel decks Decking can serve as form, shoring and finished surface 18 gage gage 22 gage Slab Thickness, Simple Continuous Simple Continuous Simple C o n t i n u o u s inches Span Span Span Span Span Span 3 80 90 70 80 66 76 31⁄ 2 76 86 66 76 60 70 4 76 80 66 70 60 66 41⁄ 2 70 80 60 70 56 60 5 66 76 60 66 56 6However, there are several common strengthening methods you can consider5
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Slab for concrete reinstatement, lay mesh reinforcement and form the concrete slab using the correct equipment and materials The candidate will also be able to correctly identify and safely dispose of surplus materials and materials that cannot be reused Reinstatement of concrete slabs Learning Outcome 1 Prepare subbase to receive concrete slab Assessment criteria 11 remove#地台钢筋 #SlabReinforcement #SteelReinforcement #SteelRebar #Slab #GroundSlab#Concrete #SlabFoundation #LeanConcrete#ConcreteWorks #ConstructionWorks #ConstructSuspended slab reinforcement details Concrete slab floors come in many forms and can be used to provide great thermal comfort and lifestyle advantages Slabs can be on ground suspended or a mix of both Concrete unit weight of reinforced concrete 150 Concrete slab on girders shall consist of Class b 2 concrete 40 ksi 8 modulus of elasticity Traditionally reinforced structural
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Reinforcement detailing of a slab is done based on its support conditions Slab may be supported on walls or beams or columns Slab supported directly by columns are called flat slab Slab supported on two sides and bending takes place predominantly in one direction only is called One Way Slab On the other hand, when slab is supported on all four sides and bending takeIn details the spacing of the bars at the column strips can bars near the support unless otherwise indicated or shown those along the longer span at center and over the longer span 2 for two way slab along the longer span shall be placed below 1 all reinforcement shall be 0019 clear minimum from top concrete slab and bottom of slab 010m (min) compacted 24 dia (030 min) 24 dia 1 Suspended slabs are normally sat on hardcore or some barney rubble or something The design means that if the ground settles away under the slab afterwards then it doesn't matter because the slab is capable of spanning across the supports A sus slab isn't such a big deal but I would be uncomfortable not designing it properly and for that you need full details The
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A suspended concrete floor is a floor slab where its perimeter is, or at least two of its opposite edges are, supported on walls, beams or columns that carry its self weight and imposed loading The floor spans between supports and will normally deflect under load to a dimension that is limited by the design used The prestressing of a concrete floor slab can eliminate its usual deflectionIn general, there are similar requirements for oneway, and two ways slab when slab Slab reinforcement details should be done by following the relevant code of practices and standards method of detailing of reinforcements Mainly, there are three types of slabs in castinsitu concrete One way spanning slabs;
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Er detailing of additional reinforcing steel in the slab or beams, beams spanning between columns or other beams, or thickening of portions of the slab around openingsWhen you determine that an existing structure can't accommodate new openings without strengthening, the situation becomes more complex;Suspended slabs are made of concrete and steel mesh, the same as a ground slab They are normally prefabricated offsite, and transported by truck Some slabs have hollow channels running through them these 'hollow core slabs' are used to help reduce weight, and also to allow cabling and piping to be run through the slab Are there variations? RE suspended slab reinforcement detail KootK (Structural) 6 Jun 19 30 I have many, and varied, thoughts on this 1) I used to work for a structural firm that had a rather notable and charismatic founder It predates me but, on many occasions, I heard tales of him walking around to supervise engineers and whacking them on the wrist with a
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Distribution bars are 8 mm in diameter @ 150 mm centre to centre spacing Top and Bottom Clear Cover is 25 mm;Suspended slab reinforcement details Suspended slabs are formed and poured in situ, with either removable formwork or 'lost' nonload bearing formwork, or permanent formwork which forms part of the reinforcement At SNG Engineers we have several years of experience in designing and detailing several different types of concrete frame system The advantage of a suspendedTwo Way Suspended Slab Detail Typical Two Way Suspended Slab Reinforced Concrete Drawn not to scale Composed of Plans and Section File was saved as AutoCAD Version 04 so many can downloaded it Add to wish list $300 – Purchase Checkout Added to cart
Concrete Slab Wikipedia
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This article is the first in a series on recommended reinforcement details for castinplace concrete construction Twoway slabs are generally defined as suspended slabs where the ratio of the long to the short side of a slab panel is 2 or less In twoway construction, load transfer is by bending in two directions The main flexural reinforcement usually consists of two mats of An overview of twoway slab systems Twoway slabs are slabs that are supported on four sides In twoway slabs, the load will be carried in both directions, thus main reinforcement is provided in both directions for twoway slabs The slabs are considered as spanning twoway when the longer to shorter span length is less than a ratio of two The bending of these slabs takes theThickness of Slab –
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