Design Example: Floating Slab. Worked examples presented at the Workshop “Eurocode 7: Geotechnical Design” Dublin, 13-14 June, 2013 Support to the implementation, harmonization and further development of the Eurocodes. c) Determine N i for erosion failure. This design gives the staircase a rustic yet modern look. It comes in two configurations where storage and internal memory. This types of slabs are mostly used in the floor of multi-storey buildings. A2-Slab thickness design by WRI method A3-Design examples using COE charts A4-Slab design using post-tensioning A5-Shrinkage-compensatingconcreteexamples CHAPTER l-INTRODUCTION l. 0 was used when estimating the safety factor (calculated in relation to the modulus of rupture) that allows that the slabs of plain concrete sustain an infinite number of load repetitions. Interior load bearing walls call for thickening the slab, there, as well. Compressive strength in pounds per square inch or kilo Pascals 2. ANALYSIS AND DESIGN OF SLABS ON GRADE WITH SINGLE LAYER OF REINFORCEMENT Ground supported slabs are frequently designed with a single layer of reinforcing. Many variables affecting finished-slab performance must be considered when selecting a slab type and when specifying or exe- cuting a slab design. Waddell Engineering Ltd. Criteria for Selection and Design of Residential Slabs-on-Ground. Precast concrete floor slabs are lifted from the ground up to the final height by lifting cranes. Since floor slabs maybe designed for moving and extreme live loads, the design should be checked for stationary live loading conditions as well. Construction Joint in Slabs. Hazard from the western United States from the 2014 National Seismic Hazard Maps (Petersen et al. Above, Figure 1609, Basic Wind Speed (3-second gust), 33 feet above ground, exposure C IBC 2003 Zone V 30 (mph) 1 2 3 70 80 90 (Western Mass. *Comments/Observations regarding modelling in ETABS* *Doc No: 10-00-CD-0006* *Date: May 06, 2017* Some of the observations made during extraction of results from ETABS (v 9. “While an area rug can be a great look, it’s not ideal for everyone, especially if you entertain or have younger children,” says architect Sybille Zimmermann of Studio Zimmermann. 50 75mm concrete screed 1. Potentially on a 50mm thick concrete slabs which measure 90cm x 60cm or something of the same equivalent you may “get away with“ using sand due to the sheer weight of the pieces alone. Filling the cavity below ground. * the design moments in the edge panel may have to be adjusted according to 3. PANACHE GROUND (SMOOTH) CREAM PAVING SLAB 100X100MM SAMPLE 20296. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. Sid Hazra has the right idea and the image in his answer is perfect. the slab are explored. They have a number of outstanding advantages. The design of suspended floors should conform to requirements of ACI 318 and ACI 421. 35 mtr so tell me how to construct this slab. It takes very little site preparation, very little formwork for. Abstract This research was initially to gain an understanding of why concrete ground floor slabs crack as a result of concrete drying shrinkage. 7 in2 and 52. No saw-cut. Edit this example. h = the slab thickness, inches. EXAMPLE: The objective of this example is to minimize prescriptive requirements. Construction of Slab on Ground- Design Elements The construction of slab on ground requires certain basic design elements. 0 meter cantilever slab with hairpin reinforcement, staircase (stairs) reinforcement with middle landing and slab landing support, hidden beam for slab opening, one way and two way slab examples. This SWMS includes fill materials, steel reinforcement, edge formwork and concrete placement and finish. "National Research Council. Load capacities of simply supported concrete slabs: Imposed loads varies from approximately 1. Salon Floor Plans. Method Statement for Casting Slab on Grade. The entire framework of this staircase’s railing is made of metal. While it may be prudent for legal reasons to specify a minimum strength, it is just as well as to develop the mix design for slab-on-ground applications by specifying the maximum sack content, water-cement ratio, and aggregate quantity/size. Most slabs-on-ground are unreinforced or nominally reinforced for crack-width control. Waffle pod slab – This is similar to the ground slab. The purpose of the steel fibers is to limit the width of any cracks that occur. This slab would typically be a slab that is the full length of the pallet used. Post-Tensioned Slab-on-Grade Foundation 3D FEM Design Software ADAPT-SOG Product Overview ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. There are many solutions, but the key the MSC SteelWise column in December 2007, titled. LinkStudPSR Limited Tel/Fax: 08456 528 528 e-mail: [email protected] 10 Design method from patch loads using design charts. Spalling – disintegration of concrete at joint edges. Does the ground bearing floor slab align with the project summary sheet and foundation design? Yes / No Continues on reverse 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. Civil & Structural Supplement. The resulting raised floor makes the house look much better than when the is slab poured basically flat to the ground. The slab on ground is in direct contact with the typical draining layer such as a gravel, sand or a. First, in order to use a two-way slab of any type the bays (the area between columns) must be relatively square as the ratio of the length of the. The numbering of the members is explained as below. The clear distance between webs is 50 inches. However, there are many design decisions that must be made prior to the actual laying of the stones. "Design of Slabs-on-Ground" - ACI 360R-06 - by American Concrete Institute (2006) 4. Dec 14, 2016 - Checking the plumbing layout in a concrete slab before it is poured is one of the most important things the home builder will do. Biggest Single U. designing and building concrete slab-on-ground substrates that are suitable for receiving flooring materials. 5 m for a hall construction in a school. When sidewall columns are in a properly constrained condition (usually by attachment to a concrete slab-on-grade) shear forces are reduced by 25%. • Reinforcement is #3 @ 16” on center at mid depth of slab. Design of Reinforced Concrete Slabs 107 B = 1. PCA Concrete Floors on Grade - Free download as PDF File (. This guide is not a standard nor. Secondary deflections of slab-on-ground foundations. a new and accurate equation for rc wall design is presented. Post-Tensioned Slab-on-Grade Foundation 3D FEM Design Software ADAPT-SOG Product Overview ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils. A square footing of 0. This Concrete (Slab on Ground) Safe Work Method Statement (SWMS) outlines the safety steps, main hazards and controls associated with the preparation of concrete slabs on ground, prior to pouring concrete. Using the moments, shears and deflections determined above, nonprestressed slabs-on-ground, mat or raft. It has been the most common material used in slabs but several new. 3 Limit States Design Method 18. An 8- inch foundation wall has a footing 8 inches deep and 16 inches wide. Design is the decision-making process of planning, sizing, detailing, and developing specifications preceding construction of slabs-on-ground. 40 W/C Related searches for slabs on grade design examples slab on ground design example slab on grade calculation examples concrete slab design calculations slab on grade reinforcement design. And the most commonly planted swale tree in many parts of Florida is the live oak (Quercus virginiana), which is a wonderful long-lived, sturdy tree, that simply requires more root and trunk space than the 6 foot swale designated by the designers. This will depend on whether the tank is elevated, resting on ground level or buried underground. There are several ways to build a slab foundation. This guide presents information on the design of slabs-on-ground, primarily industrial floors. Edit this example. 12 Preliminary design method to determine initial slab. Design of Residential Slabs-on-Ground, BRAB Report #33. The slab thickness is to be designed as 150 mm. The ground beneath the base slab is expected to heave by up to 140 mm. 01D) - by Robert G. Civil Engineer, Universidad Nacional of Colombia, graduated Valedictorian of the class. ADAPT-Builder offers for the first time the design capability of a three-dimensional foundation slab based on PTI’s principles for the design of ground supported slabs on expansive soils. org The American Concrete Institute. Generally, reservoirs or under ground roads are not constructed every day like other structures. This design example is for end bearing piles that are driven through cohesive soil and tipped out in rock. Design is defined as the decision-. The article presents detailed results of the experiment made and advanced numerical modelling based on nonlinear analysis and application of fracture-plastic model. Stiffness versus deflection. 8 kPa partitions 2. the slab are explored. 627 k / ) from the cantilever action of the sidewalls; which results in reduction of the midspan maximum moments. A wide range of special cover slab s can be manufactured to customer’s specifications. Sadly for sale is our lovely Gib'Sea 282 Swing keel the DorneMist. 50 Additional design load to BS 6399:Part 1:1996 (dwellings) 1. Slab-on-grade foundations are one of the most popular types of foundations in the U. This is an example of one piece square slab well cap. 3 Procedure for Deflection checking 41 3. The design procedure includes determining slab thickness based on moving live loads and then checking adequacy of slab thickness for stationary live load. Following these ten steps will give you a top-class TO. ) (Eastern Mass. American Concrete Institute 360R-10 - A Guide to Design of Slabs-on-Ground (Ninth print, March 2016, errata June 23rd 2016) ISBN: 0870313711 / 9780870313714 Reference is also made to ACI 544 4R-18 Guide to Design with Fiber-Reinforced Concrete. 3-second gust Fastest mile Reference wind pressures Zone. All cover slabs are ‘heavy duty’ and are suitable for use in main roads. one column provided for supporting slab that is ( from wall to center of column distance 1. Area rugs can help ground a room and add comfort, but putting one right below where you dine isn’t the most practical move. additional slab-on-grade design methods are outlined in the American Concrete Institute Committee 360’s Guide to Design of Slabs-on-Ground (2010). A Slab On Ground Design Calls F or A 10cm Thick Mass. And the most commonly planted swale tree in many parts of Florida is the live oak (Quercus virginiana), which is a wonderful long-lived, sturdy tree, that simply requires more root and trunk space than the 6 foot swale designated by the designers. SEPTEMBER 2013 LRFD BRIDGE DESIGN 12-4 minimum top slab thickness is 9 inches, and the minimum bottom slab is 10 inches for all culverts with spans larger than 8 feet. the design and construction of slab-on-grade flooring and pavements. Well then, obviously my structural engineering background has no relevance to the design of concrete structures in the building industry. Assume a 3 story concrete building with first level parking. Concrete formwork - Square plated screw jacks at bottom, nailed to timber sole plates. SLAB DESIGN. Appendix 7—Construction document information. They often argue that faulty design, materials, or construction must have caused such cracks. Design Procedure 1. Step 2 - Read across the table for #3 at 16" spacing (blue). It uses finite element analysis to analyse and design slabs of any shape with two-way action automatically considered. Make sure to support the joists with shims every 12 inches because the ripped-down material has diminished structural strength and cannot span much distance. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. Foundation: 300mm of concrete (my soil type is hard ballast) Single 140mm block up to DPC Start of TF construction with 145mm sill plate Slab: Hardcore. This video shows you how to calculate the amount of concrete required to pour a Concrete Slab on Ground with Splayed edge beam and a Rebated edge. 360R-66 A6. Calculation and analysis of uniform thickness slabs, sometimes referred to as California flat slabs. Chart use for design is presented in a nice step by step manner. It is located near Sky Pond in New Hampton, NH. The design of raft foundations involves a number of disciplines, as consideration must be given not only to the structure itself, but also to; integration other constructions (such as external walls ), insulation, damp proofing and complex ground conditions such as the presence of groundwater, trees or contamination. Crazing – Many fine hairline cracks in a new slab which resemble a road map. In structural design of post frame (pole) buildings, an ability to transfer wind shear loads from roof to endwalls to ground becomes a key to cost effective design success. There are also a number of options - you can create news footings by rein firing and enhancing the exiting slab edges (normally on just two sides) or you might design the supports for the upper floor to be taken out beyond the current slab edge line and be taken down too new piers - the number depends upon the design and size of the upper floor. In wet and coastal areas, it is sometimes common to put houses up on posts as well. Slab Stress/1000 lb. In 1981 “DESIGN OF SLAB-ON-GROUND FOUN-DATIONS, A Design, Construction & Inspection Aid for Consulting Engineers” was first published. 3-Wheel Load – PCA Figure 3 – Design Chart for Single Wheel Loads. Slab Reinforcement. 35 mtr so tell me how to construct this slab. Example Problem Of One Way Slab Design: A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. 4 and Clause 5. The top (steel) reinforcement is important. The VSL Slab on grade system has been used successfully worldwide in various types of logistics and. ground investigations §6 Ground zincludes (for example) footings, piles, and basement walls. Stiffened raft slabs. [ Feature. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. It emphasizes the aspects of concrete pavement technology that are different from pro-cedures used to design and construct slab-on-grade such as streets, highways, and floors. There are five design procedures with examples developed by Mr. pdf), Text File (. There is guidance about specifying realistic F f and F l values in Section 4. The uniform distributed load/m' on. While Waffle Slabs may be cheaper to build in some circumstances, they do not work very. 3rd Edition of the Design of Post-Tensioned Slabs-on-Ground 8601 N. The main objective of this project is to analyze and design a multi-story building (3D-dimensional reinforce concrete frame), the design of reinforced concrete slabs, beams, columns, footings and. Blinded with 50mm sand blinding. Good descriptions of how slabs behave and how this relates to design. In order to simplify the analysis and to be able to use the superposition principle for evaluating the effect of load combinations, linear analysis is generally adopted even though concrete slabs normally have a pronounced non-linear response. 1 Direct Design Method (DDM) For slab systems with or without beams loaded only by gravity loads and having a fairly regular layout meeting the following conditions:. The first, and perhaps most common, foundation type is a slab on grade foundation. Singly-Reinforced Beam Design Example CEE 3150 – Reinforced Concrete Design Design a rectangular reinforced concrete beam for loads given below. Slabs can be on-ground, suspended, or a mix of both. The service live load is 100 psf and 4000 psi concrete is specified for use with steel with a yield stress equal to 60000 psi. Calculation and analysis of uniform thickness slabs, sometimes referred to as California flat slabs. 6 Procedure for shear checking 44 3. Samsung Galaxy S20 Plus release date and price. Civil Engineer, Universidad Nacional of Colombia, graduated Valedictorian of the class. Concrete slab floors come in many forms and can be used to provide great thermal comfort and lifestyle advantages. CONCRETE SLAB ON GRADE ANALYSIS For Slab Subjected to Interior Concentrated Post or Wheel Loading Assuming ACI-360 "Type B" Design - Reinforced for Shrinkage and Temperature Only Job Name: Sunset Farms, Inc. Having concrete step by step garden. "The closest example I have is the Finnish paper 'Thermal and Moisture Conditions of Coarse-grained Fill Layer Under a Slab-on-ground Structure in Cold Climate' from the Journal of Thermal Envelopes and Building Science, Vol 28, no. 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. Grade slab itself acts as a foundation for the building which does not require further footings. Thank you very much, I think I know understand the equations used in the spreadsheet. The transfer floors are commonly used in multi-storey buildings, and they are major structural elements carrying a number of floors. Determining slab thickness starts with the purpose of the slab, its use and its loads, in addition to applicable stan-dards. Learn about balanced venJlaon designs. A novel finite element method for designing floor slabs on grade and pavements with loads at edges. Looks at cracking which can occur in pile-supported slabs, covering structural design, the differences between pile-supported, ground-supported and elevated suspended slabs, suggestions for slab designers, procedures and alternative design strategies. 2—Example design criteria. Slab-on-Grade. Purpose and scope. You must decide between irregular and cut stones. The decision to use a flat plate or flat slab is based on a number of considerations. PT slabs on ground can be placed and stamped just like with any other concrete slab. Crazing – Many fine hairline cracks in a new slab which resemble a road map. h = the slab thickness, inches. A Builder’s Guide to Frost Protected Shallow Foundations 1 Background A frost protected shallow foundation (FPSF) is a practical alternative to a deeper, more-costly foundation in cold regions with seasonal ground freezing and the potential for frost heave. This SWMS includes fill materials, steel reinforcement, edge formwork and concrete placement and finish. In Single-Slab mode, the machine will pick up one slab at a time. Level the joists using the shim stock. Matthew Stuart, P. Ribbed and waffle slabs provide a lighter and stiffer slab than an equivalent flat slab, reducing the extent of foundations. Concrete elements include: structural slabs, beams, and columns; slab-on-grade (parking); foundation walls; footings. 4), for design of reinforced concrete members, are being share in this article. The recommendations derived from these and other studies vary from extremely light to extremely heavy. CALCULATE LATERAL LOADS (continued) In the “additional information” provided in the description of the house, the top of footing is 24 in. Add or remove soil as needed to level the site. By Amy Reineke Trygestad P. Most slabs-on-ground are unreinforced or nominally reinforced for crack-width control. The only difference is that waffle pod slabs have trenches. 100 psf is a reasonable load for light storage and I would normally use a 5" thick slab for commercial buildings and a 4" slab for residential. Design Example of a Building IITK-GSDMA-EQ26-V3. Slabs and Flat Slabs Lecture 5 19 th October 2016 Contents –Lecture 5 • Designing for shear in slabs -including punching shear • Detailing –Solid slabs • Flat Slab Design –includes flexure worked example • Exercise -Punching shear. Dec 14, 2016 - Checking the plumbing layout in a concrete slab before it is poured is one of the most important things the home builder will do. 0 Bridge Geometry The slab bridge in this example has a span length of 40. Uniform-thickness slabs are typically about 9. 3--Typical details Conversion factors, p. It's the lack of uniformity of the load, slab, or soil that causes problems. Please take a moment to provide us with some feedback on our website. Purpose and scope. in two-way slabs with unbonded tendons and approaches the required amount of shrinkage and temperature reinforce-ment in ACI 318-11, Section 7. For example, a 5-inch slab can support a 5000-pound post load without additional concrete or rebar. Determine if vegetation, topsoil and foreign material have been removed from within the foundation walls where the slab is to be placed. In these climates, slab-on-grade foundations work well, as long as the slab is built to a good standard of quality and performance. But somehow, It goes against logic; for example, I design the slab based on 100pci subgrade, and during a site inspection, I realize that the contractor did a really good job in compacting the soil, and the soil modulus in reality should be 200pci or more. Move to right to eff. Punching shear stress check and reinforcement design based on ACI code Categorization of columns: Based on the geometry of the floor slab at the vicinity of a column, each column is categorized into to one of the following options: 1. In the case of simply supported members, these can be found out easily using the three equations of equilibrium. Taking The Above Considerations Into Account. 5 inches throughout the length of the bridge. 7b-Post Load – PCA Figure 7b – Design Chart for Post Loads (k = 100 pci). Basically, it's a concrete pad poured on the ground so in theory, it's well within the skill set of a competent DIY'er. Slab-on-the-ground foundations This is a concrete slab incorporating a lightly-reinforced edge beams and possibly internal beams also. Sewer pipe penetrations, water line entry penetrations, drain basins in the floor slab or sleeves for electrical, gas or communication are all common penetrations, typically with their own design or detailed features. A Builder’s Guide to Frost Protected Shallow Foundations 1 Background A frost protected shallow foundation (FPSF) is a practical alternative to a deeper, more-costly foundation in cold regions with seasonal ground freezing and the potential for frost heave. reinforcingsteel in slabs-on-grade crsi engineering datareport number37 aserviceoftheconcretereinforcingsteelinstitute 933n. 0 INTRODUCTION A slab is a thin planar member which transmits transverse loads by bending action to its supports. Restaurant Floor Plans. 73 , S b = 10. For heavier loads. ) (Eastern Mass. Foundation Design - Raft Slab Stiffened Raft Foundation Raft Foundations or Waffle Slabs as they are sometimes called were developed in the 1980’s, as a response to more traditional strip footing foundation failures in expansive clays. 0 NOTATION Area of column or area of effective column head Area of steel in tension Effective width of slab for transfer of moment to edge column Size of a rectangular column in x-direction Size of a rectangular column in y—direction Effective depth of tensile reinforcement Depth of column head Characteristic yield strength of. Punching shear stress check and reinforcement design based on ACI code Categorization of columns: Based on the geometry of the floor slab at the vicinity of a column, each column is categorized into to one of the following options: 1. They can be insulated, both underneath and on the edges. Slab Thickness, t Area of steel provided, As PCA (note: other documents may provide different minimums) Area of slab Estimated concrete flexural strength (change if necessary) Spread Tensile Strength provided by steel reinforcing, fwwm Post-crack performance as percentage of flexural strength for fiber reinforced concrete W7. The vapor retarder will prevent moisture in the ground from diffusing through the slab and into the building. one column provided for supporting slab that is ( from wall to center of column distance 1. Such slabs are referred to as membrane slabs, floating slabs, or filler slabs and range in thickness from as little as 4" to 8" depending on the supported loads. The slab and/or wall thickness is increased when shear requirements dictate or the maximum steel percentages are exceeded. 2—Slabs-on-ground 5. Using such a form also makes it easy to construct a flat slab because the plywood strips act as a guide for the screed board -- a board used for smoothing the surface of the poured pad. Floors - Ctr Wall Ld Thickness Calculate the required thickness of a concrete slab-on-grade floor to support a wall load at the center/interior or on a joint. The service live load is 100 psf and 4000 psi concrete is specified for use with steel with a yield stress equal to 60000 psi. A: A structurally reinforced slab-on-ground uses a composite of concrete and structural steel to support the design load. 360R-74 CHAPTER 1—INTRODUCTION 1. Often, the concrete ground beams are designed to support brick or blockwork and can be used to form a permanent shutter to the edge of an in-situ concrete floor slab. The laying of the slab on ground designed flooring. Analysis of a slab's capacity to support on interior line load or concentrated point load: On-screen warning messages for out of compliance conditions. They had a large (say 200 cu. 8 CHAPTER 8: DESIGN OF ONE-WAY SLABS 8. and Design of Residential Slabs-on-Ground, BRAB Report #33. This document is a step-by-step design example of a typical concrete basement wall using ASDIP RETAIN. Restaurant Floor Plans. The recommendations derived from these and other studies vary from extremely light to extremely heavy. Design of Slabs-on-Ground Reported by ACI Committee 360 ACI 360R-06 This document presents information on the design of slabs-on-ground, primarily industrial floors. 1 mtr width and length 7. Design of Slab (Examples and Tutorials) by Sharifah Maszura Syed Mohsin Example 2: Continuous one way slab Figure 1 shows a clear area of 12 m x 8. • Then the stair changes direction. 1 Direct Design Method (DDM) For slab systems with or without beams loaded only by gravity loads and having a fairly regular layout meeting the following conditions:. 0 discusses site design options for moisture and vegetation control systems. Concrete slab floors come in many forms and can be used to provide great thermal comfort and lifestyle advantages. The slab on ground is in direct contact with the typical draining layer such as a gravel, sand or a. [Beware, in areas of wet soils, expansive clays, freezing climates, or unstable. Slabs-On-Ground: Slab Thickness and Base Tolerances For a more stringent fine grade tolerance, ACI 117-10 R. In most earthquake prone areas, California for example, most homes are built on slabs. Design of two-way slab with edge beams. Foundation: 300mm of concrete (my soil type is hard ballast) Single 140mm block up to DPC Start of TF construction with 145mm sill plate Slab: Hardcore. Floor slabs can range from a simple residential basement slab to a heavy-duty industrial floor. Recommended Practice for the Design of Residential Foundations - Version 1 - 3 of 17- Section 2. ,schaumburg,illinois60173-4758. CONCRETE SLAB-0N-GROUND INSPECTION CHECKLIST 1. 5-12 Standard Requirements for Design and Analysis of Shallow Post-Tensioned. 8 CHAPTER 8: DESIGN OF ONE-WAY SLABS 8. Recommended Practice for the Design of Residential Foundations – Version 1 - 3 of 17- Section 2. Determine if vegetation, topsoil and foreign material have been removed from within the foundation walls where the slab is to be placed. In two way slab, the slabs are supported on all the four sides. H1/AS1 amends NZS 4218 so that concrete slab-on-ground floors are deemed to achieve a construction R-value of R1. 0 kPa finish 1. twinsprings. for the design, construction, and maintenance of concrete parking lots placed on the ground. These design elements must be enlisted and added in the contract documents by the designer in charge before asking for a bidding. W o o d , Lecturer E. Given: f cu = 20 N/mm 2 and steel 240/350. PANACHE GROUND (SMOOTH) CHOCOLATE PAVING SLAB 100X100MM SAMPLE 20297. To perform LRFR rating, select the View Analysis Settings button on the toolbar to open the window shown below. AISC Steel Design Guide 22 contains design tables for bent plates up to an overhang length of 18 in. 7b-Post Load – PCA Figure 7b – Design Chart for Post Loads (k = 100 pci). The resulting raised floor makes the house look much better than when the is slab poured basically flat to the ground. MidWest Plan Service (Koenig & Runestad, 1998, 2005) has used a. ACI Manual of Concrete Practice, 2006, Part 5, Guide for Concrete Floor and Slab Construction, ACI 302. 2 65mm concrete screed 1. 7a-Post Load – PCA Figure 7a – Design Chart for Post Loads (k = 50 pci) PCA Fig. Construction Joint in Slabs. The reinforcing steel—rods, bars, or mesh—absorbs the tensile, shear, and sometimes the compressive stresses in a concrete structure. contact area = 70. It is recommended that the vapor retarder be in direct contact with the concrete slab and that no sand or gravel be placed in between (Lstiburek 2008). Tabulated formulas that recommend minimum slab thickness based on span are found in the Concrete Design section of the Specifications. One example of a renovation of cinder slabs that has been successful is to take advantage of the loose cinder fill atop the structural slab to gain valuable space for new structure. They can be made in-situ or prefabricated. The following example illustrates the design methods presented in ACI 318-05 and IBC 2003. Concrete Floor Slabs Design Requirements, Equations and Calculator : Civil Engineering Design Knowledge. Grade slab itself acts as a foundation for the building which does not require further footings. Most slabs-on-ground are unreinforced or nominally reinforced for crack-width control. , at or near ground level, itself either resting directly upon the ground or supported at both ends by piers. This comprehensive book will help you select the most cost-effective approach to achieve high-performance concrete floors. 2 of the AASHTO LRFD Bridge Design Specification. Surface Area (A): The surface area of the slab is returned in square feet (ft 2). For each axle load class: a) Determine N i for fatigue failure. Thank you very much, I think I know understand the equations used in the spreadsheet. 31 piled floor design example the design method previously explained is now illustrated by an example. The numbering of the members is explained as below. FROST: The maximum depth at which the ground can freeze is called the frost line. Appendix 6—Design examples for steel FRC slabs-on- ground using yield line method. Design of reinforced concrete transfer floors, although routinely performed by structural design engineers, is a very challenging task. Achievement of this objective depends upon careful design, detailing and construction. Traffic Votumt. 15 Pile supported floors. The design procedure set forth in that publication had at that time been in use by the author for about 15 years. Summarize your design by means of a sketch showing plan and typical cross sections. An overview of the design/analysis process. 3 Design Example: Floating slab A ground floor slab is to be designed for a single-storey supermarket measuring 60 m × 36 m on plan, as shown in Fig. Packard R G 1976 Slab Thickness Design for Industrial Concrete Floors on Grade from CVEN 4545 at University of Colorado, Boulder. There are five design procedures with examples developed by Mr. ACI-360R-10 Guide to Design of Slabs-on-Ground presents information on the design of slabs-on-ground, primarily industrial floors. Slabs on ground typically are designed as unreinforced sections. The most common application of suspended slab in residential construction is used at garage floor where below the garage floor is a storage room or additional area for family usage. DESIGN EXAMPLE USING EXISTING PROCEDURES 238 I. In addition to general ultimate and serviceability limit state design issues, practical design considerations such as the formation of holes in the slab, support details, fire protection, and attachments to the slab are discussed. 16 Design criteria. For the example building, the storey numbers are defined as follows:. ) (Eastern Mass. For heavier loads. The slab is #[email protected]” top squares grade 60, and #6 @6” bottom squares grade 60. Step 2 - Read across the table for #3 at 16" spacing (blue). There are many solutions, but the key the MSC SteelWise column in December 2007, titled. Punching shear stress check and reinforcement design based on ACI code Categorization of columns: Based on the geometry of the floor slab at the vicinity of a column, each column is categorized into to one of the following options: 1. 0 Page 6 provided at 100 mm below ground level. 0 mtr sit-out slab,with 2 side wall support. It emphasizes the aspects of concrete pavement technology that are different from pro-cedures used to design and construct slab-on-grade such as streets, highways, and floors. The VSL Slab on grade system has been used successfully worldwide in various types of logistics and. 3) Footing Width: 12" single story 15" two story. But somehow, It goes against logic; for example, I design the slab based on 100pci subgrade, and during a site inspection, I realize that the contractor did a really good job in compacting the soil, and the soil modulus in reality should be 200pci or more. Program SLOG® is an updated software package from the 1980's FORTRAN SLOG® for the design of footings on expansive soil. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. Design of Base Slab Like the top slab, the base slab is also designed as a simply supported slab with clear spans However, the slab has to carry end moments (0. 360R-10 Guide to Design of Slabs-on-Ground. Design strip widths can be determined automatically by SAFE, or they can be manually defined by the user for more complex designs. Recommended Practice for the Design of Residential Foundations – Version 1 - 3 of 17- Section 2. Construction joint is one of the types of joints in site construction that can be located on walls and slabs. Tabulated formulas that recommend minimum slab thickness based on span are found in the Concrete Design section of the Specifications. Hot tub slab design (self. A slab on grade is, essentially, a slab of concrete poured into a form that rests on the ground. 10 Design method from patch loads using design charts. Recommended Practice for the Design of Residential Foundations - Version 1 - 3 of 17- Section 2. 1 'Land quality - managing ground conditions' should be taken into account in the design of substructure. 0 meter cantilever slab with hairpin reinforcement, staircase (stairs) reinforcement with middle landing and slab landing support, hidden beam for slab opening, one way and two way slab examples. Compressive strength in pounds per square inch or kilo Pascals 2. The drawing are as follows: Drawing FS1 - Foundation plan. Edit this example. This paper describes the on the shear strength of circular slabs. 2 and UBC 1997 Section 1816. Publication 1571 Issue 1571 of Publication (National Research Council (U. Once the wood is cut, lay the boards together on the ground like you are going to set the greenhouse kit on top of them. " Not so at the Billerica, Mass. "Design of Slabs-on-Ground" - ACI 360R-06 - by American Concrete Institute (2006) 4. The performance of products and methods of fixing vary. Re-reading it now, much remains the same, and the turn towards Universal Health Coverage in Ghana will continue beyond COVID-19. One-way slabs:. Determining the type of slab to design is one of the early decisions to be made in the solid slab design process. Design a 1′ wide strip of wall. มงคล จิรวัชรเดช. Determining slab thickness starts with the purpose of the slab, its use and its loads, in addition to applicable stan-dards. Assume a 3 story concrete building with first level parking. 5 inches throughout the length of the bridge. The edges of the slab are thicker (as wide as 24”) in order to allow for extra strength around the perimeter. 3 of AS 2870; or Section 4 of AS 2870 – Design by engineering principles. However, concrete slabs, irrespective of their thickness, are not impermeable to the slow passage of water vapour from the soil beneath. There are several ways to build a slab foundation. Appendix 6—Design examples for steel FRC slabs-on- ground using yield line method. There are two basic types of slab foundations. wSD = 20 psf wLL = 80 psf f'c = 4000 psi fy = 60,000 psi span. 9 Eurocode 2 design method for patch loads. Hot tub slab design (self. Calculate the maximum wall load(in pounds per linear foot) that the edge of a concrete slab-on-grade floor can support by providing the following input1. Slabs can be on-ground, suspended, or a mix of both. Includes slab, column, footing, raft, spiral stairs, beam and slab support modules. ( D ) Haunching diagrams shall be provided for only the precast prestressed panel deck slab. This types of slabs are mostly used in the floor of multi-storey buildings. A square footing of 0. "Slab Thickness Design for Industrial Concrete Floors on Grade" (IS195. Punching shear is a phenomenon in flat slabs caused by concentrated support reactions inducing a cone shaped perforation starting from the top surface of the slab. A wide toe raft is used when the ground conditions mean that to provide the necessary load support, a flat raft concrete slab would have to be extremely thick, which would make it very expensive. The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. 5-12 Standard Requirements for Design and Analysis of Shallow Post-Tensioned. Chapter 9 Design of Flat Slabs 9. 64 psi Ss = WS/(Pa/1000) Slab Tickness, t = 5. A stunning example of this philosophy is found in the new CopenHill waste-to-energy facility that towers like a mountain to the east of the city. 3—Typical details. Step 1 - Find the column in the table for the slab thickness (yellow). Normally, formwork is designed to support load from fresh concrete (including static pressure), their self weight, live load […]. SAFE provides an immensely capable yet easy-to-use program for structural designers, provideing the only tool necessary for the modeling, analysis, design, and detailing of concrete slab systems and foundations. How to Pour a Concrete Slab: The Basics. This course presents information on the design of slabs-on-ground, primarily industrial floors. In most parts of the United States, the maximum considered earthquake corresponds to a ground motion with a 2 percent chance of being exceeded in fifty years. Design a T-section to resist an ultimate external moment M u of 240 kNm. The dried out slab provides a comfortable indoor climate that is mold and mildew free. But even when plans and specifications for slabs on ground are based on the best guidance in industry publications, some random cracking is likely. 2 65mm concrete screed 1. Design of Base slabs. It addresses the planning, design, and detailing of slabs. Determine the slab reinforcement. A one-time. Slab design for bending is based on yield line theory. The on-ground slab, with air pockets created by the Pods, forms an insulating layer between the structure and the ground. Thank you very much, I think I know understand the equations used in the spreadsheet. US : 800-482-0464; Please type a relevant title to Save Your Search Results: example: My favorite 1500 to 2000 sq ft plans with 3 beds. When a brick wall extends below the ground floor, the cavity is filled with mortar to ground level, struck off with an outward slope. 1 Hugo Camero Sanabria. The diagram to the right shows and example of a slab on grade that is structurally and thermally isolated. In order to avoid the above problems, all the details of a concrete slab, from design to curing, must be performed appropriately. A Builder’s Guide to Frost Protected Shallow Foundations 1 Background A frost protected shallow foundation (FPSF) is a practical alternative to a deeper, more-costly foundation in cold regions with seasonal ground freezing and the potential for frost heave. additional slab-on-grade design methods are outlined in the American Concrete Institute Committee 360’s Guide to Design of Slabs-on-Ground (2010). Reply Delete. Basically, it's a concrete pad poured on the ground so in theory, it's well within the skill set of a competent DIY'er. For the example building, the storey numbers are defined as follows:. The article presents detailed results of the experiment made and advanced numerical modelling based on nonlinear analysis and application of fracture-plastic model. Once, state-of-the-art in plumbing was cast-iron drains and brass supply pipes. Using the moments, shears and deflections determined above, nonprestressed slabs-on-ground, mat or raft. In these climates, slab-on-grade foundations work well, as long as the slab is built to a good standard of quality and performance. ‘Strength’ is the reciprocal of the w/c ratio—the lower the ratio, the higher the concrete strength. Since floor slabs maybe designed for moving and extreme live loads, the design should be checked for stationary live loading conditions as well. Slab on grade – To construct this foundation, concrete is. • The stair begins with an inclined slab from the ground surface. Section showing slab on ground design. Slab on Grade vs. The mesh reinforcement in the slab is placed in the top with 1" covers. Refer to ACI 223 for procedures for the design and construction of shrinkage-compensating concrete slabs-on-ground. SAMPLE DESIGN CALCULATIONS APPENDIX C EXAMPLE C2. Our aim is to ensure you find what you are looking for when visiting our site. 项目地点:中国湖北省武汉市 建筑类型:综合住宅区,模数化预制装配式钢结构建筑 项目概述: 湛蓝武汉原创高层公寓旨在寻求具有更高性价比的合理的钢结构系统,不仅可以适用于现有的基地状况、项目功能以及工程合作方的生产设施,并且将来可以进行设计调整以适用于各种不同的基地、功能. The only concern is to always remember not to cut or drill into post-tensioned concrete slabs, since once a tendon has been cut, it is very difficult to repair. A slab foundation is a layer of poured concrete that averages six inches in thickness, and that professionals install directly on the ground – often including an initial layer of rock or gravel for drainage. Develops the design methods in Technical Report 550 Design of floors on ground. Macro Synthetic Fibre Reinforced Ground Slabs www. • Select finish flooring systems that are appropriate for the building and are capable of functioning under both constant low temperatures and, depending on. Conversion factors. ) Table 1611. So, for the first try use wire mesh that is the closest to 0. [ Feature. The suspended reinforced concrete slab is tied into the external capping beam at floor level. 'Strength' is the reciprocal of the w/c ratio—the lower the ratio, the higher the concrete strength. 0 NOTATION Area of column or area of effective column head Area of steel in tension Effective width of slab for transfer of moment to edge column Size of a rectangular column in x-direction Size of a rectangular column in y—direction Effective depth of tensile reinforcement Depth of column head Characteristic yield strength of. SIMPLIFIED 2-D PF DESIGN METHOD Wind direction V = roof truss vertical reaction P = ½ (Resultant lateral roof load from truss) Model post-to-soil interaction; for constrained pier foundation and simplified method, this is fixed end at ground line. Key Residential. Hot tub slab design (self. ) The PTI method presents a specific engineered procedure to resist the effects of expansive. Driveways width, however, can be worn with square plates. edu is a platform for academics to share research papers. It uses finite element analysis to analyse and design slabs of any shape with two-way action automatically considered. Crazing – Many fine hairline cracks in a new slab which resemble a road map. Post-tensioned slab on ground the pti design method incorporates slabs with exterior and for example, a 5-inch slab can support a 5000-pound post load, post-tensioning in - 2. It has been the most common material used in slabs but several new. Any moisture rising beneath the slab can no longer evaporate from the surface. Analysis using radio carbon dating has confirmed that the lake’s water level between 14,800 and 10,500 years ago was low enough to allow carving. Re-reading it now, much remains the same, and the turn towards Universal Health Coverage in Ghana will continue beyond COVID-19. , at or near ground level, itself either resting directly upon the ground or supported at both ends by piers. Compressive strength in pounds per square inch or kilo Pascals 2. 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. Concrete Slab Specialists CONCRETE SLABS Melbourne takes care of everything, including the project design, earthworks, concrete slabs, and any necessary plumbing excavation. Area rugs can help ground a room and add comfort, but putting one right below where you dine isn’t the most practical move. Determine if vegetation, topsoil and foreign material have been removed from within the foundation walls where the slab is to be placed. , 204 30 174 vout. Edit this example. The bulk of the work for a new slab is in the excavation and form building. 1 Required design elements—Following are the minimum items that should be addressed in the construction documents prepared by the designer (ACI 360R): a) Slab-on-ground design. 0 NOTATION Area of column or area of effective column head Area of steel in tension Effective width of slab for transfer of moment to edge column Size of a rectangular column in x-direction Size of a rectangular column in y—direction Effective depth of tensile reinforcement Depth of column head Characteristic yield strength of. The approach of using the provisions of AS 2870 written into standard is more of a prescriptive approach of following standard design and prescriptive tables. CALCULATE LATERAL LOADS (continued) In the "additional information" provided in the description of the house, the top of footing is 24 in. An estimate of the traffic volume likely to use the floor slab is a necessary design input variable. Recommended Practice for the Design of Residential Foundations – Version 1 - 3 of 17- Section 2. ( D ) Haunching diagrams shall be provided for only the precast prestressed panel deck slab. 360R-10 Guide to Design of Slabs-on-Ground. 1 Design and Rating Requirements All new concrete slab structures are to meet design requirements as stated in 17. Monolithic Slab. "Design of Slabs-on-Ground" - ACI 360R-06 - by American Concrete Institute (2006) 4. This video shows you how to calculate the amount of concrete required to pour a Concrete Slab on Ground with Splayed edge beam and a Rebated edge. 3rd Edition of the Design of Post-Tensioned Slabs-on-Ground 8601 N. The floor system of a structure can take many forms such as in situ solid slab, ribbed slab or pre-cast units. 10 Design method from patch loads using design charts. Slabs on ground typically are designed as unreinforced sections. YOU WILL ALSO. 1 The maximum design differential movement Δ = L/400, with a maximum of Δ = 30 mm; The above-ground part of the footing is to be 200 mm. Floor slabs can range from a simple residential basement slab to a heavy-duty industrial floor. We will refer to the PCA Rectangular Concrete Tanks design manual as PCA-R, and the circular tank design manual as PCA-C. Having read a good deal, I came up with the proposed ground floor layout in pic 10. Formworks are structures to used to support and hold fresh concrete in place in order to obtain the desired shape prior to setting, curing, and hardening. The analysis of the model allows to calculate several important parameters for the design of the foundation. Design is defined as the decision-. 2—Example design criteria. The suspended reinforced concrete slab is tied into the external capping beam at floor level. 360R-67 A7. Design of Base Slab Like the top slab, the base slab is also designed as a simply supported slab with clear spans However, the slab has to carry end moments (0. With some limitations, reinforcement for slabs can be sized using the Subgrade Drag Theory in order to increase the spacing of control or construction joints. 1 Required Design Elements. COLUMN B-3 Example. The simulations are performed with a typical Swedish slab-on-grade, as shown in Figures 2 and 3. Tree root-sidewalk conflicts are very common in developments. FOUNDATION & GROUND. While considering the various load combinations, the nodal displacements of the slab on the ground make it possible to check the stability and deflections of the structure. This reduces the carbon cost of your home to 1/3 rd of a basement. The slab is required to carry an imposed load of 25 kN/m2. 2--Example design criteria A7. The decision to use a flat plate or flat slab is based on a number of considerations. CE 433, Fall 2006 Slab Design Example 1 / 6 Design a one-way slab for an exterior bay of a multi-story office building using the information specified below. No consideration is given to the effect of the. 6 Procedure for shear checking 44 3. The edges of the slab are thicker (as wide as 24”) in order to allow for extra strength around the perimeter. The main objective of this project is to analyze and design a multi-story building (3D-dimensional reinforce concrete frame), the design of reinforced concrete slabs, beams, columns, footings and. For ground-bearing slabs, it is important to design the slab around the type of soil, since some soils such as clay are too dynamic to support a slab consistently across its entire area. 3) Footing Width: 12" single story 15" two story. Because of the brittle nature of shear failures, conservative design is necessary. When designing and building suspended slabs, this guide should be used in conjunction with ACI 318 and 302. For the given soil condition, both walls and roof slab for a water tank is designed, but a base slab for a tank is not designed. The ground beneath the base slab is expected to heave by up to 140 mm. With their attention to detail and dynamic approach you can be sure you will get a practical design solution and cost effective service. Calculate the maximum wall load that the maximum wall load that a concrete slab-on-grade floor can support at a joint or at the center/interior of the slab. This paper describes the on the shear strength of circular slabs. Design of the ground improvement system for floor slab support requires close coordination between the geotechnical engineer, structural engineer, and specialty geotechnical contractor. for the design, construction, and maintenance of concrete parking lots placed on the ground. 2 the bonded slab post-tensioning system annex: specification example 39 3 post-tensioned floors. Cross-sectional areas of the floor beams and girders are 14. This guide presents information on the design of slabs-on-ground, primarily industrial floors. Design a thickened slab to support the columns and. That is, the bottom of the slab is located 3. This course is a practical structural design course that contains step-by-step procedures that include instructions that help understand and design for slab on ground. 3 Prestressed Flat Slabs and Plates Prestressed flat slabs and plates have been developed mainly in Australia and the USA over the last 30 years. 11 Design method using finite element derived Design Chart. CE 437/537, Fall 2002 Slab-On-Grade Example -Design Info 1 / 8 Design the thickness for a slab-on-grade concrete slab in a warehouse. 70 was used for end bearing in rock based on successful past practice with WEAP analysis and the general direction of Iowa LRFD pile testing and research. Design of Slab (Examples and Tutorials) by Sharifah Maszura Syed Mohsin Example 2: Continuous one way slab Figure 1 shows a clear area of 12 m x 8. Uniform-thickness slabs are typically about 9. 4 of 20 Slab Bridge Designer 2. Sponsored Links. 3 review question. The purpose of the steel fibers is to limit the width of any cracks that occur. Slab-on-Ground Design by Using the PTI Ken Bondy Method. 5 Procedure for determining flexural reinforcement 43 3. This course presents information on the design of slabs-on-ground, primarily industrial floors. Exterior, load bearing walls usually call for an additional 2 inches to bring that to a 6 inch thick perimeter. Slab Heat Say "basement slab" and most people think "cold and damp. 1 Slab Design Procedure 40 3. Typical sizes for concrete slabs are 12x12, 20x30, 30x50 and 40x60, but may differ according to your project's specific needs. Slabs may be classified into 2 types depending on ratio of larger side to shorter side, its recommended in IS 456 to design slabs having (ly/lx) ratio greater than 2 as one way slab and slabs having (ly/lx) less than 2 as two way slab. This type of slab is casted directly on ground level. Instead of having a 5-inch-thick slab with several 24-inch-deep footings, a 10-inch-thick solid slab can be used. 1 mtr width and length 7. Traffic volume is characterized by the fatigue effects which must be accommodated by the slab during the design life. Limiting factors on the width of the slab edge insulation in this situation are determined by the attachment of floor finishes and the width of the foundation wall needed to support the wall structure. The slab is supported on beams of size 225 x 500 mm spaced at 4. , Los Angeles, California. Waddell Engineering will provide you 2 drawings in PDF format stamped by a professional engineer. Market for Post-Tensioning Tendons Post-Tensioned Concrete Slabs-on-Ground Author: Ken Bondy Created Date: 8/14/2002 9:17:11 PM. Her combination of low draft (keel up), ability to dry out and great sailing. Chart use for design is presented in a nice step by step manner. Analysis using radio carbon dating has confirmed that the lake’s water level between 14,800 and 10,500 years ago was low enough to allow carving. Suggested Citation:"Contents. Thank you very much, I think I know understand the equations used in the spreadsheet. Columbia Property Trust, Inc. Slabs can be on-ground, suspended, or a mix of both. 1—Introduction A6. Hence the moment capacity along the hogging yield lines is limited to the design cracking moment of the concrete. CHOCOLATE & FUDGE AVAILABLE. CCANZ has updated its Residential Concrete Slab-On-Ground Floors leaflet to reflect the recent Building Code changes listed below, and assist builders to produce a quality slab. ACI 360, "Design of Slabs-on-Grade", refers to this as a Type B slab. Instead, the slab is formed with a deeper reinforced ‘toe’ which extends to support the external side of a cavity wall. For Slab Subjected to Concentrated Post Loading (for k = 100 pci) Per PCA "Slab Thickness Design for Industrial Concrete Floors on Grade" - Figure 7b, page 10. Powered by the Equivalent Frame Method of analysis and design per latest American (ACI 318-14) and Canadian (CSA A23. A Builder’s Guide to Frost Protected Shallow Foundations 1 Background A frost protected shallow foundation (FPSF) is a practical alternative to a deeper, more-costly foundation in cold regions with seasonal ground freezing and the potential for frost heave. The bulk of the work for a new slab is in the excavation and form building. 2014-02-07. Design Step 7 – Design of Substructure Prestressed Concrete Bridge Design Example Task Order DTFH61-02-T-63032 7-2 • One group of states design the piles of an integral abutment to resist only gravity loads applied to the abutment. Loads: Framing Dead Load = selfweight Superrimposed Dead Load = 25 psf partitions, M/E, misc. 3 Limit States Design Method 18. 10 Design method from patch loads using design charts derived from Westergaard equations The above example illustrates the complexity of undertaking calculations in the case of patch loads. When positioned in the upper or top portion of the slab thickness, steel reinforcement limits the widths of. 1—Introduction. 0 was used when estimating the safety factor (calculated in relation to the modulus of rupture) that allows that the slabs of plain concrete sustain an infinite number of load repetitions. that length the top reinforcement is reduced to as f o.