51 to get number of Waffle Pod require for the slab. 5 m ( L1 = L2 ), no separate calculations needed for. This paper deals with the comparative study of Waffle slabs with flat slabs and. Bending Moment Calculation. , in the construction of floors and roofs. Dividing Factor as per ACI Table = 33. The resulting slab has many characteristics that make it unique from other types of concrete and masonry. ACI 318 provides two alternative methods for designing two-way slabs for concrete, The equivalent frame method?. The slab is the horizontal structural component that provides a flat and purposive surface. 1) Analysis of grid by Rankine Grashoff – method. design charts and equations, which now serve as a new, standalone design method for stiffened slab foundations on reactive soils. 5*bb Ok. Tow way concrete slab systems Fundamentals of building construction (BOOK) . The 8. To compare the Etabs results with the manual calculation, a solved example is provided as the following: Given: Floor cover = 200 kg/m2, Live load=250 kg/m2, Concrete density=2400 kg/m3, center-to. mathematical preliminaries in software engineering. Abstract – Waffle slab construction consists of concrete joists. 20 L2 = 0. The primary aspect to remember when designing a waffle slab is that the overall space required for the waffle slab is the most important factor to consider. be/ozj0uwr2chaetabs professional coursejoin now using promo link only for exclusive content and complete 20 story building design. Hoffman 2013-03-09 This book is intended to guide practicing structural engineers familiar with ear lier ACI building codes into more profitable routine designs with the ACI 1995 Building. Concrete Calculations · Multiply the total lineal meter of the edge beam by 150×150 · Multiply total lineal meter of edge beam by the total height . In this paper are presented the aspects of a square shaped waffle slab calculation, . Multiply the value of qu obtained from Equations 9 or 10 by the ratio [(qu from Equation 17)/(qu from Equation 16)]. 0, the minimum thickness is given in the equation below where B is the ratio of clear spans in the long-to-short directions. load carrying capacity is greater than the other types of slab. – Creation of a new project with CYPECAD and BIMserver. evepink pov girl fight videos dudestar download windows anal fuck my daughter sexy virtual girl hard candy deep web. Sitting on only four columns, the 16sqm ceiling structure holds a. Flat slab. Multiply the number of pods by 1. Waffle slab. The area assignment of soil supports is based on the subgrade modulus, and they automatically adjust whenever the mesh changes. Ensure all joins and pipes are taped. The comparison of various slabs i. 2 WAFFLE SLAB DESIGN 1. Waffle slab design. for residential. Openings in New Slabs For the purposes of design, two-way slab systems are divided into column and middle strips in two perpendicular directions. , in the construction of floors and roofs. 5, Calculations of moments and steel reinforcement are shown in Table 17. LECTURE3: dead load calculation. ETAB 15 and SAFE 14 for Waffle Slab. The system uses polystyrene pods separated by plastic spacers that quickly secure reinforcing in position with minimal tying of steel. analysis of waffle slab from which few are as listed below. winchester model 70 223 wssm value. ▫ Calculation of . Figure 4: Flat Slab Worked Example. simple math, thisbook shows you how to make correct design. Some are even higher! In a waffle slab, these forces need to be resisted only by the weight of the footing system because the waffle pod is sitting on top of the soil. Finally, the research investigates numerically the design of stiffened slab foundations aided by a sand cushion as a means to reduce the slab thickness. 2 In this method, waffle slab is assumed to be simply supported on all four edges (Figure 1a) and displacements. Figure 1. Design the slab using the data given below; Purpose of building – Residential f ck = 25 Mpa f yk = 460 Mpa Concrete cover = 25 mm Height of block wall = 2. 20; B1 = 0. EXAMPLE OF CONSUMPTION CALCULATION 8. Online Library Design Of Waffle Slab. The system uses polystyrene pods separated by plastic spacers that quickly secure reinforcing in position with minimal tying of steel. For obtaining a modification factor, the percentage of steel for slab can be assumed from 0. Floating concrete slabs provide solid foundations for structures as sheds, garages, home additions, and even manufactured homes. Slab Design for the Practicing Engineer. Non-structural components and span lengths exerted a significant effect on damping. 7 cm. The formwork is made up of many elements: waffle pods, horizontal supports, vertical supports, cube junctions, hole plates, clits [clarification needed] and steel bars. 20; B1 = 0. The slab is created by placing a series of plastic forms ( "Waffleboxes") that are either 8. Waffle slabs are different from raft slabs in two main ways. you will see the following steps:Define Units and Design Code. The strut and tie method for waffle slabs is a method that discretizes a waffle slab into a 3D truss model for analysis and design of the waffle slab. Widths to used for design and ρ calculations are : For the remained slab of column strip: b = 1. in waffle slabs, we generally create a grids of beams based on the span. In this paper are presented the aspects of a square shaped waffle slab calculation, . Savings on weight and materials. Ribbed slabs are preferable in long span residential or commercial buildings, this results in optimising the economic. Slab Depth: 10. All dimensions in mm. 1 INTRODUCTION Similar to one-way slab, it is seen that the weight of a solid two-way slab can be appreciably reduced by eliminating portions of concrete from the tensile zones without affecting the structural integrity of the the slab. The unit weight of reinforced concrete is assumed to be 24 kN/m3. SuperSlab is an above ground engineered raft foundation system, commonly known as a raft foundation, pod floor, waffle slab or floating foundation, that delivers real benefits over a conventional concrete floor and foundations. i m designing the slab system for brick masonry walls of 3,4 rooms of residential building. Thickness of the slab=l x /32= 98. 2 Load Calculations. 3 = 25. More information about maximum bar spacing can be found in Section 2. In these tutorials, you learn how to model, analyze, and design a concrete slab with an opening. The primary design issues for stiffened slabs on grade are the sizing of the beams that stiffened the slab and the spacing of the beams. Design of Concrete Structures 14th Edition By H. Description; Reviews (0) . All three designs contain a flat top surface with modulated undersides which makes them different from one another. A magnifying glass. Two way ribbed (waffle) slab system. A two-way joist system, or waffle slab, comprises. DESIGN AND CALCULATIONS Flat slabs system of construction is one in which the beams used in the conventional methods of constructions are done away with. Calculations for Waffle Pod Slab Requirements for plan take off and estimating: Architectural floor plan, Engineer plan and Slab detail or Soil test report. An important aspect in the design of flat and waffle slab floors is the calculation of punching shear at. Calculate moments and then design. Waffle slab Waffle slab Defination According to engineer Florentino Regalado[1], âthe waffle slab belongs to the family of reinforced concrete slabs that . It is lightweight and as a result less foundation costs is required. Divide the total area m^2 by 1. Thickness of the slab=l x /32= 98. A waffle slab is a two-way joist slab system reinforced with concrete ribs constructed in the . In multistoried buildings flat slab and waffle slab are. Depth of Rib, h = 275 mm ≤3. if v > vc , shear reinforcement must be provided in slabs more than 200 mm thick. Nour Nagi Al-Hindi. Design Example of Waffle Slab · Solution From basic span/effective depth ratio of 26, the trial depth of slab to be adopted = 7500/26 = 288 mm. 0m from the fixed end. 144 k-ft. Design of Waffle Slab - uap-bd. Cany anybody help me out in designing the slab resting directly on brick wall, and how to model it in Etabs and ensure the support system of brick while designing the slab please. Step 1: Determine the number of 8. 5 in = 16. 5 in = 16. if v > vc , shear reinforcement must be provided in slabs more than 200 mm thick. Interaction modelling techniques are reviewed, and the implications of the modelling assumptions typically employed are discussed. In two-way slabs, the load will be carried in both directions, thus main reinforcement is provided in both directions for two-way slabs. 63 and R0. This helps you avoid unwanted costs due to pod failure in. Waffle slab foundations are designed specifically to prevent slab heave. Total or Overall Depth Ribbed Slab = 350 mm. Waffle slabs are stronger than flat slabs, flat slabs with drop panels, two-way slabs, one-way slabs, and one-way joist slabs. It is lightweight and as a result less foundation costs is required. 2 Load Calculations. • One-way and two-way slabs, pan joists, waffle slabs, beams, and girders • Orthotropic or isotropic slab properties • Drop caps, drop panels, and random thickenings of any shape at any location. Two-way slabs are slabs that are supported on four sides. 087 x 288. Adopt a clear cover of 20 mm and 8 mm diameter bars. I Know that two way ribbed slab works by distributing slab loads to hidden interior beams ( bands ) that carry the load to columns this is easy to design manually for irregular columns layout. Generally lightweight subsequently practical. Raft Beam And Slab Footing Design installation manual for nudura insulated concrete forms,. Civil Engineering Resources. In lieu of detailed calculation for deflections, ACI 318 minimum slab thickness for two-way construction without interior beams is given in Table 8. Provided depth for rib = 275 mm Ok. 10 -2. construction of waffle slabs but general process is required in order to assume the waffle . Waffle Slab gives stiffer and lighter slabs than an equivalent flat slab. 7273 mm. The slabs have a flat top surface. This will stop any absorption of moisture into your slab. whyun (Structural) 26 Apr 05 14:56. The design of the waffle slab depends upon the total area on which the waffle slab is required. 0” | 25. The waffle pod slabs may be modelled by using a concrete top layer at the specified concrete thickness of the waffle pod slab system with an additional insulation layer of R0. 27 = 8. Ly = Lx = 7. Volume of Concrete = Area x Depth = L x B x D = 5. Calculate the required slab thickness using a slab thickness design chart. Widths to used for design and ρ calculations are : For the remained slab of column strip: b = 1. Span (Post-Tensioned): 30'-80' | 9. CONCRETE MATERIAL DETAILS AS PER IS 456. • Reports are complete ready-to-submit calculations • Reports can be printed to any page size or orientation •. Design of Ribbed and Waffle Slab. Stiffened Raft Foundation. Over the. 1-One-way slabs 2- Two-way floor systems 3-Flat slab 4- Waffle slab 5- Ribbed Slab. The strut and tie method for waffle slabs is a method that discretizes a waffle slab into a 3D truss model for analysis and design of the waffle slab. The speed of development for such a section is quicker contrasted with the customary chunk. 144 k-ft. Reinforced waffle slabs can be constructed for the span up to 16 meters while beyond that length prefabricated waffle slab is preferable. 20 L2 =. RIBBED (JOIST), HOLLOW POT & WAFFLE SLAB DESIGN TO BS 8110 @Mr. Save our Whatsapp contact +919840140396 as LCETED and Send us a message “JOIN”. 51 to get number of Waffle Pod require for the slab. ACI 318-14 (9. Except for waffle raft slabs, where the edge rebate is more than 150 mm in depth, the width of the edge beam at the base of the rebate must not be less than 200 mm, except that if R10 or N10 ties at 900 mm spacing (or equivalent) are provided to resist vertical forces, the width of the edge beam at the base of the rebate can be reduced to 150 mm. > 1/12 Spacing Between two Ribs Ok. Waffle Slab Design. This can be estimated by taking the total sf of the foundation footprint and dividing by 4. All slab panels are spanning two ways thus, consider using the bending moment coefficient for two ways slab. These com plications will be illustrated in the design examples following. I know the Direct design method, but I don't. The ETABS is an essential tool for analysis & amp; design of the PT slab 3 dimensionally under gravity as well as horizontal loads. The outcomes indicate that the design of. This includes the use of simplified coefficients, equivalent frame method, yield line analysis, grillage analysis and the finite element method. The floor is to be constructed from C25/30 concrete and steel bars having a yield strength of 460mpa. A waffle slab is a two-way joist slab system reinforced with concrete ribs constructed in the . – Available regulations and codes for reinforced concrete structures. 6 to 1. It can also be analyzed by the design method specified in the standard, the direct design method (DDM) or the equivalent frame method (EFM), or it can be designed based on the structural analysis in which the basic principles of structural mechanics are directly applied. waffle slabs has been widely used for office buildings ,hotels, auditoriums, vestibules, theatre halls, show. Thickness of the slab=l x /32= 98. A flat plate system will be considered first to illustrate the. Most of the granite slabs that are used for making countertops range from 7 to 9 feet wide, 4 to 5. 12: BS 8110 if the following conditions applied. Two-Way Joist Concrete Slab Floor (Waffle Slab) System Analysis and Design. Minimum depth = 272. Calculate the required slab thickness using a slab thickness design chart. The area assignment of soil supports is based on the subgrade modulus, and they automatically adjust whenever the mesh changes. The lateral loads are independently resisted by shear walls. 20 L2 = 0. The cloud-based PT slab optimization feature uses high-powered search algorithms to automatically search thousands of possible solutions, eliminate solutions that fail design code criteria, and identify the design option. Span Length in Long Direction of Slab = 9 m. One way slab design. Volume of Concrete = Area x Depth = L x B x D = 5. Provide a thickness of D=120 mm. – Introduction of foundations, columns and beams, as a base for. Waffle Slab Design Example Downloaded from africanamericanstudies. 6 to 1. A grid slab is another name for this. The cloud-based PT slab optimization feature uses high-powered search algorithms to automatically search thousands of possible solutions, eliminate solutions that fail design code criteria, and identify the design option. Foreword Insulating concrete forms are hollow blocks, planks, or panels that can be constructed of rigid foam plastic insulation, a composite of cement and foam insulation, a composite of cement and wood. mathematical preliminaries in software engineering. Savings on weight and materials. 0-meter strip both in X and Y direction is recommended to provide for an easier interpretation of the number of rebars after the analysis and design. Interaction modelling techniques are reviewed, and the implications of the modelling assumptions typically employed are discussed. Firstly, they don’t use trenches for footings, instead being built on the ground using perimeter beams and narrower internal beams for support. 57, R0. 10 -2. With the Texas Wafflemat, one perimeter cut-off wall is trenched per code 2’ to 5’ in depth. If you insert One way slab data. Conventional RCC Slabs are done with respect to its design and construction aspects. Abstract – Waffle slab construction consists of concrete joists. Waffle slabs are not different from a ribbed slab, their design is indeed based on the same principle as the ribbed and troughed slab system . 60, R0. Flat slab. WATCH HOW TO DESIGN WAFFLE SLAB IN ETABS & GET THE EXCEL SHEET FOR DETAILING. v < vc for a slab thickness less than 200 mm 3. 1,IS 456 provided short span is <3. Effective depth d= Span /((L/d)Basic x modification factor) For obtaining modification factor, the percentage of steel for slab can be assumed from 0. Waffle slab design. Concrete Floor - One-Way, Slab DWG (FT) DWG (M) SVG JPG. This will stop any absorption of moisture into your slab. The slab is created by placing a series of plastic forms ( "Waffleboxes") that are either 8. ProtaStructure Design Guide Ribbed and Waffle Slab Loads Version 1. Ribbed Concrete Slab Design Spreadsheet Calculator. design charts and equations, which now serve as a new, standalone design method for stiffened slab foundations on reactive soils. Modelling and design of ribbed and waffle slabs are out of scope of this document. kelley school of business, 4245252632
Equivalent thickness based on shear area calculation In waffle slab design where the drop panels create a large critical shear perimeter, the factor (b o /d) has limited contribution and is traditionally neglected for simplicity and conservatism. . Waffle slab design calculations
Construction details. The first stage of the design is finding the bending moment of the slab panels. i m designing the slab system for brick masonry walls of 3,4 rooms of residential building. *, Arun Kumar CHRIST (Deemed to be University), Bangalore Abstract In this research, optimum design of reinforced cement concrete (RCC) ribbed slab, also known as waffle slab according to the Indian RCC code (IS 456:2000) is presented. Form basic frame analysis & secondary moment from PT forces. Two-Way Concrete Waffle Slab. The name waffle comes from the grid pattern create by the. 27 = 8. Sitting on only four columns, the 16sqm ceiling structure holds a. the pronouncement as skillfully as insight of this Design Of Waffle Slab Pdf can be taken as with ease as picked to act. a shear wall supported by a slab. This is an approximate method. The bottom surface of slab is looks like waffle which is obtained by using cardboard panels or pods etc. f ck = 30 Mpa, f yk = 500 Mpa. 07 (lower slab) + 0. Minimum depth = 272. Cast in situ method is used to construct one-way slabs on beams which involves fixing of forms followed with the installation of. Though waffle slabs are about 40 per cent deeper than flat slabs, the reduction in con crete and steel quantities is considerable and where exposed, they are aesthetically appealing. 33): Span, center to center of. 3-14), spSlab v5. • Design of slab for punching. 432 = 0. Find One Way Slab or Two Way Slab. In lieu of detailed calculation for deflections, ACI 318 minimum slab thickness for two-way construction without interior beams is given in Table 8. Waffle PodSlab Design. 432 = 0. As per the type of slab. The waffle slab designs are shown in Fig. The waffle slab was analyzed by Chowdhury and Singh [8] by a semi analytical method. This study investigates the soil–slab interaction for waffle slabs supporting residential structures on highly expansive soils. 5*bb Ok. EXAMPLE OF CONSUMPTION CALCULATION 8. Provided depth for rib = 275 mm Ok. 1-One-way slabs 2- Two-way floor systems 3-Flat slab 4- Waffle slab 5- Ribbed Slab. 0, the minimum thickness is given in the equation below where B is the ratio of clear spans in the long-to-short directions. 3) Stiffness method. 3-14/04 Flexure and shear design and investigation with live load reduction and patterning. It can also be analyzed by the design method specified in the standard, the direct design method (DDM) or the equivalent frame method (EFM), or it can be designed based on the structural analysis in which the basic principles of structural mechanics are directly applied. Since the. Steel reinforcing is placed in these spaces. 5m of waffle slab, and is to support an imposed load of 5 kN/m 2, design an interior panel of the waffle slab, and a supporting beam. Multiply the number of waffle. 80 x 5. Waffle slabs are deeper than ribbed slab. Study of earthquake design methods for flat slab and waffle slab as per Indian standard building code (IS code 1893-2002) Flat slabs will be designed using the direct design method. 510 k-ft. Raft Beam And Slab Footing Design installation manual for nudura insulated concrete forms,. For example, waffle slabs are much stronger than conventional slabs. This type of foundation is more rigid and performs better on. 60, R0. Conventional RCC Slabs are done with respect to its design and construction aspects. Two-way waffle slab: This type of slab consists of a floor slab with a length-to-width ratio less than 2, supported by waffles in two directions. Checked: Rev: Ref Calculations Output 1 HOLLOW POT (WAFFLE) CONTINUOUS SLAB, 6 SPANS 10mX8m DESIGN Plan Dimensions 𝑙𝑥 = 8m 𝑙𝑦 𝑙𝑦 = 10. Single bay slab: flat slab design, (a) simply supported case (depth: 310 mm); (b) corner supported case (depth: 370 mm). A concrete floating slab is a slab that is not anchored to the ground but instead merely sits on top of it. winchester model 70 223 wssm value. reinforced concrete waffle slab design because the EC2 code. Current ACI has different factors but I believe the end result is similar. The principal complications to two-way slab design introduced by the waf fle slabs are the additional computations required for stiffness of the solid and ribbed areas, and the additional critical shear sections in the ribs. Asish Seeboo 8 1. all american pressure canner for sale. I suspect that a lot people simplify the problem. Types of Slabs 1. Ribbed slabs are made up of wide band . 5 dead and live load factors respectively. Any quality design for such a foundation must. 2 < am <= 2. Example 17. To compare the Etabs results with the manual calculation, a solved example is provided as the following: Given: Floor cover = 200 kg/m2, Live load=250 kg/m2, Concrete density=2400 kg/m3, center-to. has been observed that some of these equations may not give true representation. DESIGN AND CALCULATIONS Flat slabs system of construction is one in which the beams used in the conventional methods of constructions are done away with. Strength testing is conducted hourly and at 5 days post-curing. Effective depth=d provided =120-20-4= 96 mm. The thickness of the waffle slab is generally range from 80 mm to 100 mm. 2% with minimum slab dimensions. , the tension zone). IN THIS COURSE YOU WILL LEARN. 1 - Minimum Thickness of Non-Prestressed Two-Way Slabs without Interior Beams(mm) When using fy=420Mpa, In case of flat slab with drop Panel, Slab thickness = L n /36 = 7. 767 m. 60, R0. 6 to 1. The structures design based on posttensioned waffle slabs in seismic zones was. 3-14), spSlab v5. – Creation of a new project with CYPECAD and BIMserver. the latter option will be used to achieve better understanding for the design of two-way joist slab often called two-way ribbed slab or waffle slab. Continuous 6m Long Spans & Imposed Loading 2. 10 -2. They provide a very good form of construction where slab vibration is an issue, such as laboratories and hospitals. 50 is widely used for analysis, design, and investigation of two-way slab systems (including waffle and slab bands), beams, and one-way slab systems (including standard and wide module joist systems). An important aspect in the design of flat and waffle slab floors is the calculation of punching shear at. Grid /Waffle slab consists of Concrete beams spaced at uniform intervals . Roof coverings - structures. Structural considerations. This can be estimated by taking the total sf of the foundation footprint and dividing by 4. Design the slab using the data given below; Purpose of building – Residential f ck = 25 Mpa f yk = 460 Mpa Concrete cover = 25 mm Height of block wall = 2. 07 (upper slab), for a total of 0. ProtaStructure Design Guide Ribbed and Waffle Slab Loads Version 1. Therefore it is necessary to study about its structural behaviour. 5 or 12 inches (220 or 300 mm) in height, and 19. Waffle Slab gives stiffer and lighter slabs than an equivalent flat slab. DESIGN OF WAFFLE SLAB SYSTEM. Floating concrete slabs provide solid foundations for structures as sheds, garages, home additions, and even manufactured homes. Concrete ceiling with waffle slab structure. WAFFLE STRUCTURE IN CONSTRUCTION SECTOR. The system uses polystyrene pods separated by plastic spacers that quickly secure reinforcing in position with minimal tying of steel. if you model the waffle slab in STAAD, still you can design the beams in RCDC, however some modification is required as beams are behaving like two way slab action. 432 = 0. Must read: Pitch Roof Calculation | Quantity Survey | Volume Of Concrete & Area Of Shuttering. . 5k porn