Radius of Stiffness, "Lr", is a measure of the stiffness of the slab relative to the foundation (subgrade). Easy and convenient to use and of great help to students and professionals. Load capacities of simply supported concrete slabs: Imposed loads varies from approximately 1.5 kN/m2 (153 kg/m2) in domestic buildings to approximately 10 kN/m2 (1053 kg/m2) in heavy industrial areas. These applications will - due to browser restrictions - send data between your browser and our server. Calculate self weight of the concrete slabs; 3. input slab thickness to determine the minimum value if desired. The Concrete Calculator allows the user to quickly and easily analyze or design reinforced concrete sections without the need to create and analyze a complete structural model (joints, members, load combinations, etc. Estimate any other loads (e.g. 1), Set Fb(allow) = 3*(1+m)*P/(p*(3+m)*t^2)*(LN(Ec*t^3/(100*k*a^4))+3.84-4*m/3+(1+2*m)*a/(2*Lr)) (Ref. equations listed above. (Portland Cement Association, 1976) Assuming Slab is Reinforced for Shrinkage and Temperature Only, References: (Florida International University, Miami FL - Fall 2002). 1. 5. Concrete Slab Calculator for Slabs, Floors, Footings and Cylinders. Only emails and answers are saved in our archive. Found any bugs in any of our calculators? each side of critical dowel, Ne = 1.0+2*S(1-d(n-1)*s/Le) (where: n = dowel #), Pt = 0.50*P (assumed load transferred across joint), fd(actual) = kc*(Pc*(2+b*z)/(4*b^3*Eb*Ib)), Set Fb(allow) = 3*P*(1+m)/(2*p*t^2)*(LN(Lr/b)+0.6159) (Ref. C = 0.65 for stabilized subbase w = Maximum Allowable Stationary Live Load. "Design of Slabs-on-Ground" - ACI 360R-06 - by American Concrete Institute (2006) "Streses and Stains in Rigid Pavements" (Lecture Notes 3) - by Charles Nunoo, Ph.D., P.E. "Dowel Bar Opimization: Phases I and II - Final Report" - by Max L. Porter (Iowa State University, 2001) We don't collect information from our users. Knowing the load-bearing capacity of your concrete is essential to make sure that what you plan to have supported by the wall or slab will not be too heavy and cause it to crack and break. ). 500 kg/m2 is typical for office, storage space and similar. Add (1)+(2)+(3); 5. Subbase friction adjustment factor, 'C', is as follows: For the design of an actual structure, a competent professional should be consulted. of Elasticity, Eb = psi: Eb = 29x10^6 (assumed for steel dowels) Inertia/Dowel Bar, Ib = in.^4: Ib = p*db^4/64: Relative Bar Stiffness, b = b = (kc*db/(4*Eb*Ib))^(1/4) fd(actual) = 3. For Slab Subjected to Interior Concentrated Post or Wheel Loading onlinecalculators.brainmeasures.com. Cookies are only used in the browser to improve user experience. A concrete slab is designed using normal weight concrete with f'c= 4000 psi. Engineering (submitted to MN/DOT, March 24, 2002) Allowable extreme fiber stress in tension (in psi or kPa), Modulus of subgrade reaction (in pci or MPa/m), (assumed to equal 4000000 psi or 27579028 kPa), Maximum Allowable Stationary Live Load(in psf). online free live maximum floor live load capacity is a great engineering tool to Disclaimer: This calculator is not intended to be used for the design of actual structures, but only for schematic (preliminary) understanding of structural design principals. Some of our calculators and applications let you save application data to your local computer. Just remember to add some extra concrete to your total order because running short is not an option. "Slab Thickness Design for Industrial Concrete Floors on Grade" (IS195.01D) - by Robert G. Packard live load for maintenance) likely to come on the concrete slab; 4. help you calculate floor strength use it now. Method to Strain Predition in PCC Pavement Structures" - by University of Minnesota, Department of Civil For those cases, the user would then manually iterate the 500 kg/m2 is typical for office, storage space and similar. of Dowel Suppt., kc = psi: kc = 1.5x10^6 (assumed for concrete) Mod. 1), Set Fb(allow) = 3*P/t^2*(1-(1.772*a/Lr)^(0.72)) (Ref. Please report us at support@brainmeasures.com, Have Something to say about site, or just want to say hello, get in touch at feedback@brainmeasures.com, © Copy right 2020, All right reserved. Note : w = Maximum Allowable Stationary Live Load, k = Modulus of subgrade reaction, h = Thickness of slab, s = Allowable extreme fiber stress in tension, E = Modulus of elasticity. Joint Load, Pt = lbs. and thus no solution for the minimum slab thickness, t(min), for one or more of the 2. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Online calculators and converters have been developed to make calculations easy, these calculators are great tools for mathematical, algebraic, numbers, engineering, physics problems. 1), SSet Fb(allow) = 3*(1+m)*P/(p*(3+m)*t^2)*(LN(Ec*t^3/(100*k*a^4))+1.84-4*m/3+(1-m)/2+1.18*(1+2*m)*a/Lr) (Ref. Pc = Pt/Ne: Mod. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Load, P, Subgrade Modulus, k, and Contact Area, Ac, result in a #N/A error message C = 0.80 for granular subbase Note: direct solution for t(min) has been rounded up to nearest 1/4" thickness. 1). Pt = 0.50*P (assumed load transferred across joint) Critical Dowel Load, Pc = lbs. You can target the Engineering ToolBox by using AdWords Managed Placements. online free live maximum floor live load capacity is a great engineering tool to help you calculate floor strength use it now. s = Allowable extreme fiber stress in tension. there will be a few situations where certain combinations of the Concentrated C = 1.00 for no subbase. Mr = MR*(12*t^2/6)/12000 (per 1' = 12" width), fb1(actual) = 3*P*(1+m)/(2*p*t^2)*(LN(Lr/b)+0.6159) (Ref. The SAFI CONCRETE CALCULATOR™ is used as a standalone application or in combination with the GSE CONCRETE DESIGN, part of the GSE (General Structural Engineering) software. We don't save this data. AddThis use cookies for handling links to social media. 1), bo = 4*SQRT(Ac) (assumed shear perimeter), F = 1.5 (assumed friction factor between subgrade and slab), a = 5.5x10^(-6) (assumed thermal expansion coefficient), e = 3.5x10^(-4) (assumed coefficient of shrinkage), Le = 1.0*Lr = applicable dist. Free online Maximum Floor Live Load Capacity calculator. Please read AddThis Privacy for more information. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! This is a terrific concrete slab calculator for estimating how many cubic yards to order to complete your concrete slabs, concrete floors, concrete walls, and concrete footings. Load capacities of simply supported concrete slabs: Imposed loads varies from approximately 1.5 kN/m2 (153 kg/m2) in domestic buildings to approximately 1 0 kN/m2 (1053 kg/m2) in heavy industrial areas. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! While cracks in a slab may not seem like a big deal, the smallest crack represents a large amount of downward pressure that may be crushing pipework beneath the slab. ‘Calculations courtesy of Alex Tomanovich, PE ’. 4. "Load Testing of Instumented Pavement Sections - Improved Techniques for Appling the Finite Element Google use cookies for serving our ads and handling visitor statistics.
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