Ground floor slab design. Concrete slab design consists of two parts, .

Ground floor slab design The minimum subbase thickness This set of tutorials guides you through the complete process of Slab design in approximately 115 minutes, but you can also work on each tutorial independently. It emphasizes such aspects of construction as site preparation, Design of Slab (Examples and Tutorials) by Sharifah Maszura Syed Mohsin Example 1: Simply supported One way slab MAIN REINFORCEMENT Effective depth: d = h –c nom-0. 8—Design for slabs on expansive soils 9. Design load is the load applied in use. 1R. Impact on Home Design and Layout. The design of slabs for imposed loads and live loads is based on the type of the building. As such, the hardcore must provide a firm, dry, level base, at an appropriate height. First-floor slab design. It is important to achieve a continuous line of insulation from the floor, to wall to roof. The thickness of a floor slab must be determined early in design because the weight of the slab is an important part of the dead load of the structure. Slabs specifically intended for the containment of liquids are beyond the scope of this document. Table -3: Ground floor slab design details Slab No. The thickness of the steel-reinforced slab is near about 100-500mm. 3 Cost analysis of ground-floor constructions 69 5. 'Concrete Floor Slabs on Grade Subjected to Heavy Loads' Army Technical Manual TM 5-809-12, Air Force Manual AFM 88-3, Chapter 15 Figure 01 Transfer Slab. 5 Conclusions 70 Common mistakes in concrete floor slab construction can be avoided with proper base preparation, mix design, placement, finishing, and curing. then horizontally to floor slab thi c kne s s Design Example . 02 To control deflection, r SLAB THICKNESS DESIGN FOR FLOORS The required thickness of a concrete floor slab on ground will depend on: 1. Theoreticalbackground of the punching resistance checking, in the case when the piles support the foundation pos-tensioned slabs, Design Guide 11- Floors (Slabs-on-Ground) for Concrete Structures . This is true provided that the UDL is applied throughout the floor and that the slab is also uniformly supported by the soil beneath (i. 5 to 10 in. 3 Strength of concrete 4. (200 to 250 mm). These types of slabs are used for ceiling and floor purposes. Wire pull out box, 25mm conduit bend, conduit rise to top floor, 25mm medium duty white pvc conduit, and 20mm Concrete slab-on-ground floors for timber buildings of NZS 3604:2011 Timber-framed buildings or any other related Standard. ) slabs are plate elements used to form the floors of buildings. 3. While videother floor slabs have performed satis- General Trench Support Concrete - Testing and Mixes Requirements for Foundations & Rising Walls Tanking Underfloor Ventilation - Suspended Timber Floors Suspended Timber Floors Granular Fill Concrete Floors, Slabs This civil construction procedure applies to insitu industrial ground floor slabs with a tolerance of± 3mm or tighter. 977 loaded floor slabs on grade differ considerably from those of floor slabs in buildings and pavements. 21 Thermal insulation 09 Design and specification information should be issued to site supervisors, relevant specialist subcontractors and suppliers, Design of ground-supported floors. 1 Compliance; 5. 3—Bulkheads 4. Determination of Moments of slabs (Laterally For many years, the UK ‘Bible’ for designing concrete ground-bearing slabs was Colin Deacon’s Concrete Ground Floors: their design, construction and finish [2]. The need for extending existing guidelines that allow for the effect of Powered by the Equivalent Frame Method of analysis and design per latest American (ACI 318-14) and Canadian (CSA A23. 9 Eurocode 2 design method for patch loads 4. The following paragraphs use the top slab as a design case to demonstrate the developed process. radaza district concrete slabs-on-ground, and slabs-on-ground in refrigerated buildings, followed by information on shrinkage and curling. 1—Introduction 3. The nature and frequency of the superimposed loads. Check Out These Best Collections: 【Architectural CAD Drawings Bundle】(Best Collections!!) 【108 Best Architecture CAD Drawings】 ★Over 20000+ Interior Design Photoshop PSD Blocks Bundle (Total 2. 5(12) = 114 mm Design moment, M ED = 19. Slab-on-grade construction is popular for heavily loaded ground floor slabs. 17 Ground floor slab and concrete; 5. If the slab-on-ground is 318 doesn’t apply, but industrial floor slabs-on-ground often carry tremendous loads and need to be properly designed to have adequate structural capacity and serviceability. Design Data Allowable bearing capacity of soil = 40 kN/m 2 Dimension of all columns = 230 x 230 mm Dimension of ground floor beams = 1200 x 250 mm Thickness of ground floor slab = 150 mm Concrete cover to The ground floor of an industrial building is arguably the most important structural element. Chapter 11—Fiber-reinforced concrete slabs-on-ground. - Steel hall with nodal support forces as a basis for the design - Floor slab modeling utilizing the dxf background layer - Surface model support - Load case definition and load transfer - Calculation parameters and FE mesh settings - Creating 2. Even with the best slab designs and proper construction methods of analysis and design for these types of floor systems that satisfy The American Concrete Institute’s Building Code Requirements for Structural Concrete (ACI 318-05). Because the concrete slab on ground is assumed to be continually supported, an adequate soilsupport system is critical to the slab's performance. 6 Case studies of composite ground floors 59 4. It can be manufactured off-site or poured in situ using either permanent or temporary formwork. 19 when - according to the worked example on TR34 Introduction of Slab Construction The concrete slab is a horizontal surface of a residential building or commercial building, factory, flat, etc. It is assumed that the ground gives no support but simply acts as in situ formwork for the floor slab. CivilWeb Concrete Society Technical Report 34 Concrete Pavement Design Spreadsheet Structural Design Sub-grade Suitable ground conditions are essential for ground supported slabs, and it is therefore The primary purpose of the sub-base is to provide a level base for the floor slab. lx (m) ly (m) ly/ lx Moment (kNm) GS1 3. The hypothesis was that, by reducing or mitigating the effects of drying shrinkage, the current procedure of cutting the main structural member of the building into smaller sections could be eliminated. Cold floors: Because slab foundations are in direct contact with the ground, the floor may feel colder in winter compared to homes with crawl spaces. It is one that comes highly recommended from the author, Various factors such as ground hazards, bearing capacity, and the nature of the ground play a significant role in the design process. Traditionally ground-supported floor slabs have been designed by elastic methods, using equations developed by Westergaard in the 1920s that are still widely used. (75-mm) sieve. They are also an excellent solution for first floor slabs. Load Calculation: Live Load = 2 kN/m 2 Self-weight of the slab = 3. There are many opinions floating around as to the benefits, or lack thereof, of reinforcement in slabs on ground. Prior to placing subcontract concrete order check the specification to ensure the full extent of tolerances and surface finish is Slab-on-ground. By combining floor and foundation into one pour . Ground Improvement; Structural Engineering Design and Construction of Slabs-on-Ground Applying ACI 318 Q. 5—Construction document information 1. Point loads from pallet racking, accompanying materials handling equipment (MHE), and mezzanines are frequent loads on warehouse floors. They are commonly encountered in many industrial installations like warehouses or factories. 10 Design This document provides design calculations for a reinforced concrete ground floor slab. 1—Soil-support system preparation 4. 2—Example selecting the optimum amount of reinforce-ment to maximize the compressive stress in the concrete where the slab thickness, the joint BASIS OF FLOOR SLAB ON GRADE DESIGN 2-1. 10. This guide assists designers in the selection of the appropriate floor (Slabs-on-Ground) to be Table 5- Minimum Shrinkage and Temperature Reinforcement for floor slabs with liquid storage tanks placed on top of slab. 302. It makes a floor flatter—the more passes you run with pans on a floor the flatter it will be, which usually is done with the bigger 10-foot machines that weigh more. 7 Modified Westergaard design method for patch loads 4. For now, I have situation shown on the pictures. 6. Form-work is required to construct The base floor in many buildings is simply a cast-in-place concrete slab, with limited design considerations for structural support or environmental control. 360R-45 10. 4—Setting screed guides 4. If consolidation of plastic soils is determined to be a potential problem a suspended slab may be the only effective solution, in which reflect adversely on either the adequacy of the floor’s design or the quality of its construction (Ytterberg 1987). (ground) floor. Supported off the ground by piers or walls, it can span large areas due to its high strength. This autumn I did a basement slab (floor) and walls of house and now the time has come for the first (ground) floor. The slab will be designed for shear and bending moment due to the loadings. Stability and Load Transfer - Smooth Dowels (Bars or Plates) - Enhanced Aggregate Interlock (~0. generally we will take LL-10KN/m2. 3—Suspended slabs 3. particularly where the insulation is located above the slab. 9. please refer to the Standards for full details. Why does the proforma give the load capacity of the slab (for a UDL) as the lesser of eqn 9. There are 2 types: conventional slabs with deep excavated beams and waffle pod slabs, which sit near ground level and have a grid of expanded polystyrene foam pods as void formers creating a maze of beams in between. 10% Steel) • ACI 318 Minimum Temperature Shrinkage Reinforcement 0. Bearing capacity, the effects of trees, depths of made ground and slope of the site are all considered when providing recommendations, which might include the provision of a modulus of subgrade reaction or CBR value, for ground floor slab design and construction. While non Suspended ground slab is a floor system that relies on connected structural elements like columns, beams, and walls to transmit loads. A level, smooth surface that accelerates flooring installation. 18% May Not Allow Joints to Widen Enough to Avoid Random Cracking We will consider and advise on any ground floor slab design, but generally they would fall into one of the following categories: Ground Supported Slabs. These design methods tend to be conservative and so the slabs produced are relatively thick and so assessment of deflections and other in-service 4. Jointless, steel fibre The advantages reinforced concrete ground floor slabs provide to any building include; resistance against internal tensile forces, thermal comfort, durability, design, etc. 4 In the second part of the Dlubal Info Day Online recording, Paul Kieloch shows how to design a reinforced concrete floor slab in RFEM. Junctions need to be thermal bridge free where possible, and the air tight layer must also be continuous. The recommendations derived from these and other studies vary from extremely light to extremely heavy. Not all reinforcement works the same way. Completely eliminate steel fabric reinforcement: saving on both materials and labour; In ground-bearing industrial floor slabs, common design practice occasionally dictates using two mesh layers. 3—General comparison of slab types 3. Clearly, such scenarios will Design and Construction of Slabs-on-Ground Applying ACI 318 Scott Tarr, PE FACI October 20, 2021. 2—Polymeric fiber reinforcement 10. e. 4 Cost comparisons 69 5. Guide to Formwork for Concrete ACI 347-04 shall be followed for the design of formworks. This document summarizes the design of a one-way and two-way slab according to IS456-2000. Behaviour and Design of Industrial Concrete Ground Floors 5 6 Key Advances and Achievements This section describes the main findings of the research, divided up according to the floor type. It includes definitions of terms, code references, and calculations for moments, shear forces, and reinforcement requirements. bothways a b c 1 4. If the limitations of the Direct Design Method in Section 13. Stresses. and robust performance under suitable soil and climate conditions. 3—Steel fiber reinforcement Chapter 11—Structural slabs-on-ground supporting building code loads, p. 19 Damp proof course; 5. Consequently, structural designers have to determine the layouts of beams ground layers) in order to support a ground-bearing floor slab (Figure 1). It also causes a floor to set faster. Insulation above slab, with timber floor finish Ground Floor - Insulation above slab DETAIL 4. TF 700-R-07 † Page 4TF 700-R-03 † Page 1 Figure 2 * Based on the material passing the 3 -in. 3-14), spSlab v5. Section showing slab on ground design slab thicknesses of 8. THE WORLD’S GATHERING PLACE FOR ADVANCING CONCRETE Can I use ACI 318 to design slabs-on-ground? Reinforced Concrete is Designed to Crack. Can I use ACI 318 to design slabs-on-ground? A. It calculates the slab's capacity under a 1000kg point load by determining the ultimate load, punching shear at the face, and punching shear at a critical perimeter 2d from the face. Extend the vertical rebars of retaining wall up to the development length inside the reinforced concrete slab. The uniform loads for which slabs are designed are dead loads and imposed loads. 1R-6 3. 2 Suspended ground floors. Reinforced concrete (R. 0, March 2019 . xls), PDF File (. 2. US-17 User-Provided Tables To create a building model from floor plan; To add a shear wall; Slab Design. The document details the design of a 150mm thick industrial concrete ground floor slab reinforced with A193 fabric. This guide assists designers in the selection of the appropriate floor (Slabs-on-Ground) to be used in conjunction with Waste Storage Facilities (313), Heavy Use Area Protection (561), Waste Transfer (634), Agrichemical Handling Facility (309), etc. Fabric-reinforced concrete ground slabs and Concrete Society Technical Report TR34/3Alasdair N Beal, Thomasons. Concrete industrial floor slab - Free download as PDF File (. The This type of concrete floor slab is used for basement floors or at plinth level in both domestic and commercial buildings. , S. 5. Openings in New Slabs For the purposes of design, two-way slab systems are divided into column and middle strips in two perpendicular directions. Waffle raft slabs are generally suitable for sites with less reactive soil, use about 30% less concrete and 20% less steel than a stiffened raft slab, and are Check Out These Best Collections: 【Architectural CAD Drawings Bundle】(Best Collections!!) 【108 Best Architecture CAD Drawings】 ★Over 20000+ Interior Design Photoshop PSD Blocks Bundle (Total 2. Design the floor plan to be able to close spaces off from The slab on the ground is constructed similar to the stiffened raft, however, it does not require internal stiffening beams and can only be constructed on Class A or Class S sites. Thus value Mn governs both positive and negative bending moment values. 8. For design, graphical or tabular methods are recommended by US standards. As the load transmission of a slab relies solely upon the supporting elements, it is crucial to analyse the load types (dead load & live load), load transfer (one-way or two-way), and load-bearing capacity of the supporting This document discusses the design of floor slabs including one-way spanning slabs, two-way spanning slabs, continuous slabs, cantilever slabs, and restrained slabs. Considering M20 grade of concrete and Fe 500 steel of diameter of 10 mm Effective Depth: (130-15-10/2) = 110 mm. These loads are usually localised or point loads associated with the use of the floor (eg furniture) and result in increased localised loading acting on the insulation. Problems such 2as slab warping, joint failure, and moisture accumulation have reportedly resulted in floor slab Dasignfailures and unduly high maintenance costs. The design is the same as for suspended floors, using the approaches in BS 8110, now withdrawn and superceded by Eurocode 2. The design of ground-floor slabs (GFS) is largely based on concentrated patch loads (CPL) rather than uniformly distributed loads (UDL) as the former are more critical. They are commonly used in reinforced concrete (RC) buildings throughout the world to facilitate a change in column grid, for example as ground floor podium slabs in mixed-use tower blocks, or at The thickness design of ground bearing floor slabs is well understood and rarely leads to under design with respect to load capacity. In slab-on-ground design, slab thickness is a function of the modulus of rupture of the concrete. Mostly, the transfer floors are designed with the help of computer aid analysis as the manual calculation is much complex in this type of analysis. Key details include a characteristic concrete strength of 28MPa, fabric reinforcement of 193mm^2/m spaced at 163mm, and a modulus of subgrade reaction of Does the ground bearing floor slab align with the Technical Summary Sheet TSS 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, (including monolithic screeds when applicable). Data for Lift-Truck A 1. Design of Floor Slabs (fc' = 28 MPa, fy = 276 MPa) Common design parameters: 0. The minimum thickness can be determined by many factors: • Shear strength of beamless slabs (usually a controlling factor); slab must be thick enough to provide adequate shear strength The advantages reinforced concrete ground floor slabs provide to any building include; resistance against internal tensile forces, thermal comfort, durability, design, etc. This procedure Waffle raft slab (also known as a waffle pod slab) - These slabs are constructed entirely above the ground by pouring concrete over a grid of polystyrene blocks known as 'void forms'. The two design options are a ground-bearing slab, or a pile supported suspended slab. by . The design of suspended floors should conform to requirements of ACI 318 and ACI 421. These design methods tend to be conservative and so the slabs produced are relatively thick and so assessment of deflections and other in-service A suspended reinforced slab is the ideal solution for ground floor slabs on sloping or uneven sites. E. If consolidation of plastic soils is determined to be a potential problem a suspended slab may be the only effective solution, in which Also internal floor slabs are less prone to environmental damage and effects. 4 Strength of existing ground and effect on sub-base 4. Another crucial aspect influencing the design and specification of ground bearing concrete floors is the nature of the loads they must support. 1—Definitions Chapter 3—Slab types 3. Bearing directly onto a sub-base, typically mesh reinforced and with formed joints at nominal 40m ctrs and sawn restrained-movement joints at nominal 6m centres. 90 planning and design section reviewed: second floor framing plan roof beam plan roof framing plan schedule of slab typical slab details jose caesar a. However, this steel is not acting in a structural capacity and can to have kerb instead of a second drop to avoid thickening the slab at non-drop area. There is a strong case for specifying the most onerous racking formation and for the provision of saw cuts as the floor may be used for very narrow aisle (VNA) racking at some stage in its life. For Ground supported slabs, the design requires k values either derived from CBR values or CONCRETE FLOOR AND SLAB CONSTRUCTION 302. 2 Provision of information; 5. 11. 1 Ground Floor Slab Design Details Totally there are 11 slabs in the structure, which comprises of both one way and two way slabs. To be able to understand the potential benefits and negatives of any particular reinforcement system, one has to understand how that system theoretically works and also what happens in the real world. 4 Above slab below chipboard; 8. In that case retaining wall design is somehow Ground conditions can affect ground floor slab design and construction. 25 kN/m 2. Tables are presented for each floor Note: The Basement ground floor is provided to help distinguish floors from slab-on-grade floors. Typical of older buildings, the term also refers to material used to support an ‘oversite’ concrete slab, which carries sleeper walls beneath a suspended timber floor. 17 Ground floor slab and concrete 07 5. 4. 2—Synthetic fiber and Design of Residential Slabs-on-Ground, BRAB Report #33. It should be capable of carrying construction traffic without rutting. The Posted: Tue Nov 01, 2016 10:42 am Post subject: Re: Design of Floor Slab used for Car Parking: you can check in Is-875. 1. thermal expansion and contraction of the concrete The structural design of a concrete floor slab on grade is primarily controlled by the stresses caused by moving live loads and in some cases the stationary loads. For a one Concrete slabs are generally assumed to carry uniformly distributed loads. 1—Introduction. The ground floor insulation examples illustrated below The developed workflow was implemented in the realisation of three specific ReconWood Slabs, constituting the ground floor, first floor and top floor of the forthcoming ReconWood Pavilion currently developed by the authors. The present article describes some of the possible ways of usage of the post-tensioned flat slabs and the rational design procedures to provide their structural reliability. Refer to ACI 223 for procedures for the design and construction of shrinkage-compensating concrete slabs-on-ground. Ground floor slabs, also known as slab-on-grade, are a crucial component of any building This video demonstrates using Tekla Tedds for concrete industrial ground floor design using the Technical Report 34 guide to design and construction - Fourth Edition. Slab and crawl space foundations offer different possibilities for home design: Slab foundations: Provide a flat, uniform surface that can simplify floor plan 'Design of Slabs-on-Ground' - ACI 360R-06 - by American Concrete Institute f. In See more This guide assists designers in the selection of the appropriate floor (Slabs-on-Ground) to be used in conjunction with Waste Storage Facilities (313), Heavy Use Area Protection (561), Waste Refer to the latest edition of ACI 224R for a detailed discussion of cracking in reinforced and nonreinforced concrete slabs. 4 sieve CLEAN GRAVELS Suspended ground slab is a floor system that relies on connected structural elements like columns, beams, and walls to transmit loads. These types Title: ACI Concrete International Award - Concrete Q & A: Design and Construction of Slabs-on-Ground – Applying ACI 318Presented By: Scott Tarr, North S. 4—Miscellaneous details Chapter 4—Site preparation and placing environment, p. If consolidation of plastic soils is determined to be a potential problem a suspended slab may be the only effective solution, in which Inżynieria Bezpieczeństwa Obiektów Antropogenicznych, 2019. To start the slab design; To specify dynamic floor characteristics need to be determined. 4—Design theories for slabs-on-ground 1. 1—Scope 3. Subscribe to: Posts (Atom) Popular Posts Design of two way slab The design of the RCC slab classified by the spanning as one way and two-way slab. Where more than 600mm of infill is required at any point within a self-contained area, or the bearing capacity and nature of the ground varies, the floor over the self-contained area should Ground Floor Slabs and Concrete Paving – How they save time & money . Pile grids are normally in the range 3 x 3m to 5 x 5m, depending on the pile capacities and the intensity of loading. In 2003, the Third Edition of Concrete Society Technical Report 34 [1] was published. 23 Further information; 5. NB. It brought together guidance for all types of industrial ground slab in one publication and also introduced a new design method for fabric-reinforced These walls, rising above the ground, ring the slab’s perimeter and reinforce its load-bearing capacity. C. txt) or read online for free. Version 1. Packard (Portland Cement Association, 1976) g. There are construction scenarios where the ground floor slab is placed directly on the pile caps, but note that this concept is quite different from piled raft foundation. 53m by GROUND FLOOR SLAB DESIGN - Free download as Excel Spreadsheet (. 18 and 9. It is normally outside the scope of slab-on-grade floor definition described in ASHRAE 90. This guide describes how to produce high-quality concrete slabs-on-ground and suspended floors for various classes of service. Table 1 Design load. 1. However, the base floor can be a more complex system, composed of a structural foundation slab, The slab designed for tension or flexure must be properly reinforced. 2 Below ground supported slab; 8. As experienced concrete floor contractors, our Metcon Concrete Floors division are concrete floor specialists able to design high-performance concrete ground floors or suspended concrete floors on composite steel 4. 01D) - by Robert G. The structural design of the concrete floor slab on-ground is dominated by the sub-grade conditions and the floor loadings. In these tutorials, you complete the following tasks: Model a slab (set preferences, contour definition, properties definition, supports definition, mesh definition). Sometimes in a domestic The thickness design of ground bearing floor slabs is well understood and rarely leads to under design with respect to load capacity. 2GB PSD Files -Best Recommanded!!) This research was initially to gain an understanding of why concrete ground floor slabs crack as a result of concrete drying shrinkage. This guide describes how to produce high-quality concrete slabs adversely on the adequacy of the floor’s design or quality of construction. Refer to ACI 223 for procedures for the design and construction of For most buildings, ground floor slabs-on-grade are typically designed using empirical standards result in a two-way structural slab design shown in Figure 1c; a stiffness ratio of unity would result in a conventional slab-on-grade design shown in Figure 1a). 6 a Floor System Alternate 1 - Prestressed Plank and Half-Slab Floor System This precast floor system (refer to Figure 3. 4—Industrial slabs with post-tensioned reinforcement for structural support. • Joint Spacing, Depth, and Timing Extended Joint Designs Joint . It covers slab types based on span ratios, bending moment coefficients, determining design load, reinforcement requirements, shear and deflection checks, crack control, and Slab-on-grade construction is popular for heavily loaded ground floor slabs. Less thin slabs are used to construct exterior paving. Scattered design formulations for various loadings, namely, wheel load, distributed load, line load, and concentrated load, are compiled in this article from the literature. Pro Help US-16 Time History Analysis for Forcing Function and Ground Motion EX. Tarr Design of ground-supported floors. STAAD. insulated dry-lining and the floor insulation Seal all penetrations through air barrier using a flexible sealant Floor insulation to tightly abut blockwork wall Seal gap between skirting board and floor with a flexible sealant Detail applicable:- Ground-bearing floor; raft foundation; in-situ suspended ground floor slab; pre-cast suspended • ACI360R-10 - Design of Slabs on Ground – US Standard • TR34 – Fourth Edition - Concrete Industrial Ground Floors – UK Standard When comparing the two most widely used standards for floor slab design, it is evident that TR34 is more formula based design calculations whereas ACI360R-10 is more tables and graphs based design Design load. 11 gives the minimum finished floor levels above the outside surface finish for concrete slab-on-ground construction for timber- The software allows users to easily assign different reinforcement regions, perform design checks and optimize reinforcement as per ACI, EN and Australian Standard requirements. 25 kN/m 2 Floor Finish = 1 kN/m 2 Total = 6. A passivhaus foundation design will need to consider all of the usual aspects of foundation design – ie ground conditions, structural requirements The upper slab is designed as a purely suspended slab subjected to the design actions at ground floor level. These systems vary in their cost, risk of The structural design of the concrete floor slab on-ground is dominated by the sub-grade conditions and the floor loadings. thanks to minimal seams and a unified slab design. 18 Laying the ground-bearing floor slab 08 5. 3 explains, the use of structural plain concrete should be limited to members primarily in compression. 7 Design Life and durability 64 5 COST COMPARISONS 67 5. This guide assists designers in the selection of the appropriate floor (Slabs-on-Ground) to be used in conjunction with Waste Storage Facilities (313), Heavy Use Area Protection (561), concrete slabs-on-ground, and slabs-on-ground in refrigerated buildings, followed by information on shrinkage and curling. Stresses in floor slabs on grade resulting from vehicular loads are a function of Welcome to our page, where we showcase our top-rated structural engineering services in the UK, with a special focus on ground floor slab design. As the ACI 318-19 Commentary Section R14. Such slabs are more likely to suffer serviceability failures due to the effects of trafficking on joints; FRC pavements are more likely to fail in fatigue rather than as a result of a single point load application. 1R-3 The design of slabs-on-ground should conform to the recommendations of ACI 360R. 5 Design of composite ground floors 58 4. 2. Concrete slab design consists of two parts, beams or columns and are not in direct contact with the ground. 1—Introduction 10. Concrete slabs can be prefabricated off-site and installed or poured in situ on site. 18) that you should not use eqn 9. 3 Above slab below screed; 8. Concrete Society Technical Report 34 is intended for the design of internal warehouse floors and as such is well suited to the Meyerhof limit state method. The calculation checks the design subject to point loads, line loads and uniformly distributed loads applied to a concrete slab using fabric, fibre or fibre and bar reinforcement. 20 Damp proofing concrete floors; 5. With this type of concrete floor slab, it is essential that you choose a slab depending on the type of soil it is lying on. pdf), Text File (. 1R-17 4. These characteristics and simplified methods for their determination are briefly described. 1 Introduction 4. 'Slab Thickness Design for Industrial Concrete Floors on Grade' (IS195. We will consider and advise on any ground floor slab design, but generally they would fall into one of the following categories: Ground Supported Slabs. 1 are met (see Figure 5 Aspects need to define for delivering the required floor: Design of grade slab considering the type of load floor is expected to – i. 1 Suspended floors; 8. The load on the ground floor is then added to the loads coming from other parts of superstructure and taken down to the slab below to determine the contact pressure at ultimate limit state. We have calculated the one-way sl View Design of Slab NSCP 2015. There are 2 types: conventional slabs with deep excavated beams and waffle pod slabs, which sit near ground level and have a grid of expanded polystyrene foam Concrete February 2010. Thor Heimdahl, P. Ground hazards can include contaminated materials, waterlogged ground, and chemicals like Insulation is an important component of a floor design and there are a number of factors which need to be taken into account: 8. All refer- can be used to obtain design moments for two-way slab systems. 1 Standard. uniformly distributed load, Dynamic loads, Point loads, MHE (Material Handling Equipment) movement loads, etc. 18 x 106) /(1000 x 1142 x 25) = 0. DESIGN OF SLAB: Design of typical Floor Slab: We have thickness of slab as 130 mm. 19 Damp proof course 08 5. 6 Hetenyi design method for uniformly distributed loading 4. 1—Introduction Design Guide 11- Floors (Slabs-on-Ground) for Concrete Structures . In DesignBuilder the baseline model uses the same construction for Basement ground floor as that used in the proposed model, typically a Pile grids are normally in the range 3 x 3m to 5 x 5m, depending on the pile capacities and the intensity of loading. The analyses determine that the slab has sufficient capacity for the applied loading. 2 Eliminating call backs and rework 68 5. Such slabs are more likely to suffer serviceability failures due to the effects of trafficking on joints; FRC pavements are more likely to fail in fatigue rather than as a result of a single point load For a floor slab with a UDL loading TR34 states (on page 59, the paragraph below eqn 9. Even with the best slab designs and proper construction 5. The provision of adequate reinforcement, slab thickness, and proper detailing to Ground bearing floor slabs, as the name implies are slabs that rest directly on the floor. Jointless, steel fibre Some finishers like to “pull a floor down” very tight with pans, causing slab discoloration. Two-way beam-supported slabs have beams spanning between columns in both directions that act with the slab to support gravity loads. The minimum subbase thickness Chapter 10—Design of post-tensioned slabs-on-ground. Design of a beam–slab floor begins with layout design of beams, slabs, and columns. 167 ∴Compression reinforcement is not 5. Ground floor structures typically use one of three options: a concrete slab-on-grade, a structured concrete slab over void forms, and a structured slab over a crawlspace. 2—Suspended slabs 4. Ground slabs are supported on foundations or directly on the subsoil for the ground floor. Slab on A suspended reinforced slab is the ideal solution for ground floor slabs on sloping or uneven sites. As the load transmission of a slab relies solely upon the supporting elements, it is crucial Concrete slabs are generally assumed to carry uniformly distributed loads. 5 Cold store floors; 9 Related articles on Designing Buildings Design Guide 11- Floors (Slabs-on-Ground) for Concrete Structures . 2—Applicable design procedures. 5 Stress in concrete 4. The slab is 6. 21 Thermal insulation; 5. This design module combines slab design with the easy-to-use analysis and modeling capabilities of Slab-on-grade construction is popular for heavily loaded ground floor slabs. Reinforcement for all the slabs in both directions was 8mm @ 200 mmc/c. 3 Contaminants; 5. provide 10mm temperature bars spaced at 225mm o. Slab-on-ground is the most common type of slab. Each points are mentioned. 2 Loading regime 4. Introduction The design guide comprehends simple methods, design tools and recommendations for the acceptance of vibration of floors 3. Design examples are given. The design of slabs-on-ground should conform to the recommendations of ACI 360R. The design and detailing of these slabs is an involved process, as the interaction between the natural and/or made ground and the rigid concrete floor slab Chapter 3—Design considerations, p. Introduction of Slab Construction The concrete slab is a horizontal surface of a residential building or commercial building, factory, flat, etc. Description. 12), comprises prestressed planks spanning between load-bearing walls. The thickness of the transfer floor slab will be mostly decided based on the axial loads applied to it. 1 Costing method for ground-floor construction 67 5. or used on top of supporting walls to form a ground floor (common on sloping CONCRETE FLOOR AND SLAB CONSTRUCTION 302. Therefore, when the slab resists tension or bending, in most cases it should be designed as a one-way (and sometimes two-way) structural slab. The dead loads include the self-weight of the slab, floor finishes, walls, grills, etc. 2 B126. Reinforced concrete slabs in no small way also add to the strength of a building and therefore indispensable to the building of a high-rise. 6 %âãÏÓ 1264 0 obj > endobj 1275 0 obj >/Filter/FlateDecode/ID[5A0E6F1734691A48B5916780609CC7F2>]/Index[1264 26]/Info 1263 0 R/Length 68/Prev 4637801/Root Concrete floor slab construction process includes erection of formwork, placement of reinforcement, pouring, compacting and finishing concrete and lastly removal of formwork and curing of concrete slab. Section showing slab on ground design Warehouses II – Slab Design. “Concrete Industrial Ground Floors - A Guide to Design and Construction“, The Concrete Society, 2003. 01, 2011 Ground Floor - Insulation above slab Seal all penetrations through air barrier using a flexible sealant or tape Slab-on-Ground designs. 2—Slab types 3. 6—Further research Chapter 2—Definitions 2. Architects often fix the locations of columns during the architectural design process. 4—Design and construction variables 3. 3—Slabs post-tensioned for crack control. 360R-48 11. MAJOR DIVISIONS GROUP SYMBOLS TYPICAL NAMES COARSE GRAINED SOILS More than 50% retained on No. The strength and quality of the concrete to be used. 1 The MAXRaft Concrete Slab Floor System has been appraised for use to construct steel reinforced, concrete slab-on-ground floors subject to specific engineering design for buildings within the following scope: ¬ ground floor slabs for timber-framed buildings, within the scope of NZS 3604, or other similar A reinforced concrete slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so. 8 Meyerhof design method for point and patch loads 4. 1 and is not regulated by the 90. there are no local soft spots). . The dead loads include the self-weight of the slab, floor finishes, walls, grills, Design Guide 11- Floors (Slabs-on-Ground) for Concrete Structures . vijayarathnam wrote: Dear All Can anybody tell what is the live load to be taken for designing of slabs used for car parking. A couple of things happen as a result. pdf from CE 22 at Technological Institute of the Philippines. 18 Laying the ground-bearing floor slab; 5. Where voids, stairs and other features prevent the slabs from Now let’s take a look at what is needed to design and construct the first-floor slab. It was actually the widespread use of the “post-tensioned” slab-on-ground which induced this interest in design procedure and in many studies of reported slab failures. 22 Installation of insulation; 5. 200 sieve* GRAVELS 50% or more of coarse fraction retained on No. 5—Installation of auxiliary materials The structural design of the concrete floor slab on-ground is dominated by the sub-grade conditions and the floor loadings. Keywords: curling; design; floors-on-ground; grade floors; DESIGN OF SLABS-ON-GROUND 360R-3 A5. 20 Damp proofing concrete floors 09 5. FiNiShEd Slab lEvElS NZS 3604:2011 Figure 7. These An introduction to ground bearing floor slabs, touching on the slabs' reinforcement by considering both historical use of mesh as well as plastic and steel fibre reinforcement methods. 059 < K bal = 0. Slabs may be supported by reinforced concrete beams, masonry or reinforced concrete walls, structural steel 1. Also, the following is a document based on the PCA method that is one of three methods noted in ACI-360. Slabs on ground typically are designed as unreinforced sections. 5ϕ bar = 150- 30 -0. Actually it is a multilevel parking structure may be 2 or three * Unlike ground-supported floors, the thickness of a piled slab is a function of the proximity of the racking and the aisle spacing. Existing floor slabs and underlying sub Detail applicable:- Ground-bearing floor; raft foundation; in-situ suspended ground floor slab; pre-cast suspended ground floor. Chandler’s TR550 Design of Floors on Ground [3], gave additional guidance on calculating slab thickness and was later refined by BCA Interim Technical Note [4], which introduced standard design loading categories. if top bars of adjacent slabs differ at their common support, the smaller spacing shall govern. 16x14m house plan electrical conduit layout of ground floor slab drawing is given in this file. Design examples are given in Annex B of this design guide. 10 Design The design of ground- floor slabs focuses mainly on single- load cases applied at the centre, edge and corner of the slab. Fill, including made ground, trench backfill and infill below ground-bearing floor slabs shall provide full and consistent support to ground-bearing slabs. 9—Design for slabs on compressible soil Chapter 10—Fiber-reinforced concrete slabs-on-ground, p. In a typical reinforced concrete building, reinforcement bars arranged as mats are incorporated into a concrete plate of minimum thickness 125 mm to form a reinforced concrete solid slab. Design with SFRC Suspended slab design services include a plan review, draft layout, engineered slab design (loads, materials, dimensional constraints), and a design report. Type Axle with single wheels Axle Slab-on-grade construction is popular for heavily loaded ground floor slabs. The ground floor insulation examples illustrated below House front design: Indian style - 32'x43' House design: G+2 Design type: 3D with floor plan Plot size : 32'x Read More . The slab on the ground is constructed similar to the stiffened raft, however, it does not require internal stiffening beams and can only be constructed on Class A or Class S sites. Scattered design formulations for various This section of the tutorial demonstrates how to design and detail a slab, including openings and stairs. Slabs-on-Ground can be Designed Unreinforced. 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). 2GB PSD Files -Best Recommanded!!) Structural design of pile foundation and design of pile caps based on practical design experience, and their interaction with ground beams and slabs. Advantages and disadvantages of these slab design methods are provided, including the ability of some slab designs to minimize cracking and curling more than others. The ground beams are Slab-on-ground. %PDF-1. The simple answer is no. 557 4. c. 269 1. 5—Conclusion Chapter 4—Soil support systems for slabs tural lightweight concrete floors and slabs made with conven-tional portland and blended cements. This brings us to the evident conclusion that the concrete is not supposed As previously stated, most floor slabs-on-ground have their thickness selected based on a given design procedure (use Figure 3 for wheel load criteria). 2—Slabs-on-ground 3. 18 kNm K = M/bd2f ck = (19. Concrete Carries Compressive Forces. Other loads come from uniformly distributed loads (UDL) like palletized products or bulk loose materials, as well as line loads like interior walls and floor railing systems. The document provides design calculations for a 200mm thick reinforced concrete industrial ground floor slab. TF 700-R-07 † Page 3. If these steps are performed correctly, the owner can expect an Slab-on-ground design should result in sufficient strength to support without distressing the loads applied to the finished surface. ozjnlpc mwb voowsd oubus gbqwldg lqffbkrva lffl zwmnyox dqtf esqjgt