Building on a sloping block everything you need to know. Allow the compound to spread out and level on its own. From framing layout all the way through to detail drawing production, safe integrates every aspect of the engineering design process in one easy and intuitive environment. Detail with a constant slab width throughtout the extension and the adjucent slab. Slab on metal deck analysis and design both composite and form deck per sdi and aci 31899. And not being able to slope a variable thickness floor.
If possible, place concrete on undisturbed, firm soil. Ready made structural designed drawings for an industrial building with elevated crane and mezzanine floor. Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated slabs and mat. May 09, 2018 sloping slabs under gravity load would be subjected to bending and axial thrust. Complete structural design drawings of a reinforced concrete house. It was actually the widespread use of the posttensioned slab onground which induced this interest in design procedure and in many studies of reported slab failures. Welcome with ramps under our belts, perhaps creating a sloping slab can be another option for a pitched surface. Limit state method is used for analysis and design. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. The design of slabs onground should conform to the recommendations of aci 360r.
I want to correct this problem before i lay the pavers. Analysis and design of sloping slab and beam structural. This tutorial shows how to assign rigid diaphragm for lightweight sloping slab in etabs for seismic analysis. According to the 1995 aci code, all twoway reinforced concrete slab systems, including edge supported slabs, flat slabs, and flat plates, are to be analyzed and designed according to one unified method, such as direct design method and equivalent frame method. If the problem is statically determinate, the equilibrium equations would. How do i create a drainage slope on my concrete slab before. Download free demo updated august 8, 2019 soilstructure slab on grade software simplifies the calculation of a. Download geotechnical engineering software safe 2016 developed by computers and structures inc. Longer spans can be achieved due to prestress, which can also be used to counteract deflections. To workaround this issue, use one of the following methods. Best practices of concrete pavement transition design and. The wall may retain soil or other granular material. Sloping slabs under gravity load would be subjected to bending and axial thrust. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer.
Safe is the ultimate tool for designing concrete floor and foundation systems. The concrete slab is in very good condition but it doesnt slope away from the house. Concrete slab finishes and the use of fnumber system. This solution is dictated on the one side by the steep slope of the site and on the other by the desire to reduce the interference of the building mass in the existing topography. Shear capacity of welded studs calculates the shear capacity of 12, 58, 34 and 78diameter welded studs in a flat soffit slab of normal weight concrete.
The objective of this video is to create a structural slab. Calculates the horizontal shear and section properties for composite steel beam and concrete slab sections with solid slabs, composite steel decks, or haunches. Dig out the edges alongside your patio, and pound these into place. Lecture structure on pervious foundation khoslas theory. Sep 21, 2014 this tutorial shows how to assign rigid diaphragm for lightweight sloping slab in etabs for seismic analysis. Reinforced concrete slab and beam design software adaptrc. Regular wear and tear, severe fluctuating weather conditions and improperly preparing the ground before a concrete pour can result in a sloping concrete slab. Concrete slab design software free download concrete slab. Sep 04, 2019 new for concrete using new edit shape geometry functionality in tekla structures 2019i, sloping slabs for drainage in parking garages and other similar type structures can now be modeled as one. Detailed calculation steps presented for verification.
The building dimensions vary but lets say 75x50 for this example. Calculate cement, sand and aggregate quantity in concrete. Plan view of a reinforced concrete pitchedinclined slab. Remove all vegetation, soft soils, and rocks so that support for the slab is uniform. Issues related to sloping of floors slabs, varying the thickness of floors, limits to sloping floors and the shortcoming of adding a slab edge to a sloped floor slab. Concrete makes it easy and fast to build quality floors at a. Slopes between seven and 10 per cent, should accommodate some level change within the building footprint. Flat to slightly sloping sites single slab on ground construction is only suitable for a site slope up to seven per cent. If you have tried to assign the rigid diaphragm to this type of slab, the program does not grow well this assignment because the center of mass with eccentricity of each norm can not receive forces that are not contained in the plane horizontal. The fl number relates to the general floor slope of a concrete slab from an assumed datum. Design and analysis of retaining walls 3 f crib walls or coffer dams are cells or units to be filled with soil or builtup members of pieces of precast concrete or metal and are supported by anchor pieces embedded in the soil for stability.
Dec 27, 2019 cantilever overhang inclined slab supported from a reinforced concrete beam at the roof edge. Slopes that are steeper than this are fine, but you may also wish to consider the ease of mobility on a concrete patio that is too steep. Construction sloping roof using mixer truck latest technologies building sloping concrete roof duration. Solution once a slab has been sloped, the edge will not recognize the sloped edges. Please practice handwashing and social distancing, and check out our resources for adapting to these times. The recommendations derived from these and other studies vary from extremely light to extremely heavy. The project also consists of cross check of manual results with the. Weir or barrage is constructed across a perennial river to. Concrete is a versatile material that can be easily adapted and tailored for a range of different site slopes and soil conditions. Follow the instructions on your product and mix your concrete in a wheelbarrow. Pour the selfleveling compound onto the sloped area of the concrete slab, starting at one corner and pouring outward. Concrete slab finishes and the use of fnumber system instructor. Guide for the design and construction of concrete parking lots reported by aci committee 330 aci 330r08 concrete parking lots serve many kinds of public facilities, commercial developments, businesses, and multifamily housing projects.
To create a sloped structural floor, use one of the following methods. They primarily accommodate parked vehicles, but may also provide maneuvering areas and access for delivery. On a 20 deep garage, concrete sloping toward the big door, that would be 5, and 6 on a 24 deep garage. If you arent sure, just describe the job to the concrete dispatcher, and they will tell you what slump to use. Similarly, site slope may dictate that a more cost effective or more appropriate solution may be to build on stumpssubfloor framing or a combination of stumps and slab. Its nearly immpossible to find the tbeam and slab elevation at. The multiform system will provide the best smooth offshutter finish. Its nearly immpossible to find the tbeam and slab elevation at any given column line intersection. A system for building sloped concrete roofs concrete. Its nearly immpossible to find the tbeam and slab elevation at any given column. Posttensioned, reinforced concrete slab design software ram.
Our experienced designers will guide the appropriate design response for each client and each design brief making the latitude 37 group your best choice for construction of. Technical bulletin sloping drainage floors concrete floors. Embedded 34 inch into the roof slab after concreting, these channels retain the insulation and serve as attachment points for interior ceiling finishes. This video compares and contrasts the differences between 3 floor types. The first reinforced concrete design manual formerly titled aci design handbook was developed in. Concrete slab resting on grade containing steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. If the slope is more gradual than this, you may run into trouble getting water to run off properly. Use sloped surface tools to edit a structural floor. Refer to aci 223 for procedures for the design and construction of shrinkagecompensating concrete slabs onground.
Sloping concrete crickets revit products 2018 autodesk. Set forms so that the concrete slab surface slopes a minimum of two percent, or 14 inch per foot, to provide adequate drainage. If you need to add a slope to a previously built concrete platform, you should still use wooden forms, like 2x4s, in order to make sure that the concrete lays evenly. Detailed analysis and design as per indian standards. Design the roof slab, beam and column of house given in figure 1. The design procedure includes determining slab thickness based. This glass roof is honestly a formidable style procedure. Perfect set of structural drawings to be used as a template or as an example. Of course we dont have to deal with heavy snow, etc. The design of suspended floors should conform to requirements of aci 318 and aci 421.
About sloped structural floors revit products 2016. A few builders, like mike and dustin king of ateg engineering, are taking on incredibly complex roof designs, with multiple hips, valleys, and ridgelines, and constructing them out of concrete. Homes built on a concrete slab foundation are generally considered to be more solid and less susceptible to movement within the building weve all been in old homes where the floor feels springy or uneven because the stumps have rotted or inadequate stump footings were provided. Pt slabs offer the thinnest slab type, as concrete is worked to its strengths, mostly being kept in compression. The tre n c h is placed at or near the edge of the slab to a depth of seve r al feet and the bottom sloped about 1 inch in e ve r y 10 feet to natural drainage or a s t o r m sewe r. It analyses the stability of the wall based on the loads and resistances, and results in. The slab cant be removed as it runs under the brick on the front of my home.
For ultimate flexibility, our modular homes can be built on your choice of either a concrete slab or traditional steel chassis. How to design and build reinforced concrete tennis courts. The ideal situation would be to place a flat slab with concrete beams or steel beams. Retainwall is a software mainly developed for the purpose of designing a concrete or masonry retaining wall. Assign rigid diaphragm for lightweight sloping slab in etabs. Sculptural concrete house built on a steep slope this residence located in nova lima, brazil,surprises with its extreme architecture. Steelreinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below. In this case you would design for a traditional footing and joist system. Method 1 if you are using the slope arrow to slope your slab, you can flatten the slab, add the edges, and then re slope it. You tried to add an edge to a sloped slab, but you were unable to select the desired edge for placement. By simplifying slab reinforcement at column locations and eliminating column capitals, stirrup cages, or i beam shear heads, they enable efficient design and rapid. How do i create a drainage slope on my concrete slab. Another option which is quite expensive is a suspended concrete flooring system. A reinforced concrete slab is the most popular form of ground floor construction in australia today, used on about 90% of homes.
The plywood faced kwikdeck system will provide a smooth concrete finish and can support a slab thickness of up to 0. Then copy and paste the embed code into your own web page. The following is an example of a performancebased specification for concrete finishing as it relates to the fnumber system. The project aims at analysis and design of pyramidal slab as per standard provisions. The standard formula for the slope of a concrete patio is a 14inch drop for every foot of length. Jul 02, 2010 lecture series on design of reinforced concrete structures by prof. Slab re i n f o r cement and joint details for this type of court are shown in fi g u r e 3. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. For a mild slope, such as the 1in20 slope required for a wheelchair ramp, a 3in. Use a scratch template, typically, a piece of 2by4 or 2by6.
Thanks to ongoing innovations in technology it is now possible to build modular homes on a concrete slab while still enjoying the benefits of offsite construction. As the underlying ground settles further, the concrete slab will slope or sink in a particular direction, making one side higher than the other. Using tapered insulation to create gradient is not recommended for split slab assemblies because it limits the types of waterprooing membranes that can be used, it can be more readily damaged. Flat slab analysis and design free version download for pc. Inclined pitched roof concrete slab reinforcement example. Feather the edges of the compound smooth with the rest of the concrete slab with the flat side of a trowel. Creating a sloped floor slab i dont know if revit mep has this tool, but, when you create a slab with the floor tool of the architecture tab, and you click on the floor, do you see some tools on the ribbon, like modify subelements. Sep 11, 2015 sep 11, 2015 reinforced concrete sloped roof slab overhang detail stay safe and healthy. Work quickly since the selfleveling compound will set quickly. Posttensioned pt slabs are typically flat slabs, band beam and slabs or ribbed slabs. Concrete finishing techniques how to mag float, edge, and broom a concrete slab duration.
Aci 302 guide for concrete floor and slab construction technical bulletin sloping drainage floors technical bulletins are designed to provide state of the art information to owners, specifiers and contrac. Ram concept is a software application for the structural analysis and design of conventionally reinforced and posttensioned concrete floors, mats, and rafts. Rcc slab design is a free app for designing one way and two way reinforced concrete slab systems as per indian standards. The one disadvantage however, is that slabs on these sites can have complex engineering and cost much more than a standard slab. The analysis and design follow the equivalent frame analysis method of the aci code, which considers a onebay wide strip of the floor system as a continuous frame.
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Dhang, department of civil engineering, iit kharagpur. Jul 22, 2019 the structural design of the foundations of a building on a sloping block is critical. Slab reinforcement, cantilever reinforcement, slab thickness, roof apex reinforcement. Incorporate a system or rebar into each tube extending throughout the slab. Red text that is located within brackets indicates alternate or optional items depending on the nature of the project. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. The reinforced concrete design manual sp1711 is intended to provide guidance and assistance to professionals engaged in the design of castinplace reinforced concrete structures. Rcc design and detailing could be performed for ten different boundary conditions option to save the design projects in local storage. I would sink a series of footing tubes down into the ground full length48. Reinforced concrete sloped roof slab overhang detail. Sloping concrete floors another great and well thought out question, which is best answered at length.
Owners should carefully consider the impact of the selected slope on the other uses of the concrete floor as well. Thanks to innovative forming systems and improved design software, sloped concrete roofs are easier now than ever before. The construction manual states that concrete slab floors should be poured so there is 334 of skirt board left exposed above the slab. The kwikdeck system may be supported on the kwikstage, superscaff, bsprops or aluup prop systems. Newly updated, floor framing helps engineers determine optimal composite steel and concrete slab on metal deck floor framing. I have a case that has a roof with 8 different slopes. Sloping slabs can be formed with any of formscaffs decking systems. The architectural floor the archstructural floor and the concrete slab. Adding edges to sloped slabs revit products autodesk. Then slope the slab and have the beams follow similar to the truss command. Single slab on ground construction should not be used.
Layout of a single reinforced concrete tennis court. Co n c rete drain tile is laid with open joints that are cov. Mar 23, 2015 the column heads may be provided with any angle from the consideration of architecture but for the design, concrete in the portion at 45. Have the soil tamped down and a 12 gravel base compacted on top 3 at a time. From a structural standpoint, lowslump concrete is good. Based on the boundary condition, you can determine the axial thrust and the bending moment.
Concrete topping slab is an overlay designed to provide a dense, abrasionresistant, and a finished floor surface for multiple purposes such as providing a wearing course to support traffic loads in parking facilities and bus terminals, providing a level surface for interior floors, providing special base for electrical and mechanical equipment. Cantilever concrete beam reinforcement detail with adjucent continuous beam. You can choose from a single concrete slab, a slab combined with a timber subfloor, or a split slab. If the site has cross fall, then a slab may not prove viable. Useful rcc slab design app with clean and intuitive user interface. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Draw a slope arrow while sketching or editing the floor boundary. Im going to lay pavers over the concrete plan but have a concern.
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