Department of mechanics, materials and structures english courses reinforced concrete structures code. Bridge detailing guide the texas department of transportation. Aci 360, design of slabs ongrade, refers to this as a type b slab. Reinforcement details in one way slab before starting one way slab reinforcement let me clear what is one way slab.
Design of the composite flooring slab with profiled sheets t153 ruukki for a residential building bachelorv whesis 2015. The detailing requirements of a reinforcement bar depend on the reasons for its inclusion in. A tendon is defined as sheathing duct, the strands within it and the. A civil engineer must know all the aspects regarding the flat floor system. Anchorage and lap splicing detailing of slabs, columns. The minimum area of principal reinforcement is a s,min 0. As more details are put in the drawing it is ideal to show top and bottom bar separately in the drawings. Reinforcement details of simply supported beam and slab. Every bar is also marked with a number called bar mark exambles1, 2, 8 etc. Typical detailing of reinforcements in beams and slabs. This document provides standards of practice for both the architectengineer ae and reinforcing steel detailer in showing reinforcing steel details. There are 16 different types of slabs in construction. Technical thestructuralengineer 35 technical guidance note.
Reinforced flat slab design excel sheet best online. Composite steel beams with metal deck formed slab n figure 5 two way spanning. Simply supported one way slab main reinforcement effective depth. For stress transfer via bond, it is important that the full anchorage length of the reinforcement is achieved if it is to be effective. Reinforcement is provided on earth face along the length of the toe slab. Manual for design and detailing of reinforced concrete to. Torsion reinforcement to be provided is shown in fig.
Reinforcement of staircase explained in detail youtube. Reinforcing bars from the concrete deck shall extend into the link slab to a sufficient embedment length to establish a proper connection between the link slab and the deck. Online users can click here to view this illustration in pdf. Reinforcing steel in slabs on grade concrete construction. Values are given for reinforced concrete beams, columns, and slabs.
As seen in figure1 below, for a simply supported beam and slab, 100% reinforcement as per the design is provided as tension reinforcement at the mid span of the beam and slab, and 50% is curtailed at the distance of 0. Proppgortioning of wall components coefficient of active pressure k. Drawing shows typical slab structure detail through plan, sections and required legendguidelines. Slab reinforcement and beam reinforcement details daily. Detailing aspects of the reinforcement in reinforced. Reinforcement of slabless staircase explained in detail duration. Designer individuals designated by the structural engineer to use this manual to design and detail culverts. One way slab bends in one direction and two way slab bends on both the directions. Reinforcement detailing of a slab is done based on its support conditions. The wire reinforcing institute recommends the use of the subgrade drag theory for slabs up to 150 feet in length. The slab is without drops and is supported internally and on the external long sides by square columns. Reinforcing bar details for mat foundations detailing corner detailing corner joint acicrsi committee 315b, details of concrete reinforcement constructibility, has developed forums dealing with constructibility issues for. The designer determines the required slab thickness after determining the controlling loads, the appropriate safety fact o r, and the subgrade modulus appropriate. Ensure steel details are practicaland that steel can be fixed and concrete can be satisfactorily placed and compacted around complex details with adequate cover.
Department of mechanics, materials and structures english. Reinforced concrete sloped roof slab overhang detail section detail of a reinforced concrete sloped inclined slab overhang cantilever detail, supported from a concrete beam. Reinforcement for slabs on ground concrete construction. Figure 1 visual representation of a composite slab reinforced. According to the way loads are transferred to supporting beams and columns, slabs are classified into two types. Design and detailing of retaining walls learning outcomes. A floor slab in a building where stability is provided by shear walls in one direction ns. Slab supported directly by columns are called flat slab. Twoway joist concrete slab floor waffle slab system.
Elevations, plans and views of bridge components shall be treated as being transparent with the applicable reinforcement details. Reinforcement details in beams and slabs beam reinforcement details. One way slab reinforcement details daily civil engineering. Slab may be supported on walls or beams or columns. This bar mark is the identifier for the bar in the bbs. Reinforced concrete design 1 design of slab examples and. Reinforcing must have at least 112 inches of cover at top and 3 inches of cover above the soil.
Compressive stress transfer from the ties is achieved via anchor plates, bond forces and radial pressure. Elevations, plans and views of bridge components shall be treated as being transparent with the applicable reinforcement details being added. When a slab is supported on the two different sides and the ratio of longer span to shorter span is equal to or greater than 2, it will be considered as one way slab. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. Detailing of reinforcement in concrete structures engineers. Manual for design and detailing of reinforced concrete to september 20 the code of practice for structural use of concrete 20 contents 1. Part drawing of slab bottom reinforcement details is shown below. Guide to the design and construction of reinforced concrete flat slabs contents membersof the projectsteeringgroup list of tables vii iv list of figures v 1. Beams are essentially provided with main reinforcement on the tension side for flexure and transverse reinforcement. Analysis of flat sanalysis of flat sllabab analysis of flat sanalysis of flat sllabab. Include adequate quantities of reinforcement for crack control. Cantilever longitudinal and transverse reinforcement bars, supporting beam reinforcement details, adjucent slab top bottom reinforcement. Thus, unless the reinforcing is being used for other purposes such as the long dowelenhanced aggregate interlock. The lateral loads are independently resisted by shear walls.
Under normal situation, if opening width l 1 slab analysis, design and detailing pdf flat slab system is an important division of concrete floor system. Ec2 webinar autumn 2016 lecture 52 designing for shear in slabs when shear reinforcement is not required e. Aci 315 99 details detailing of concrete reinforcement. Fill height the vertical distance from the top of the top slab of a. Main reinforcement runs in the longitudinal direction, while shrinkage reinforcement runs in the transverse direction. As per below fig, it is clear that lylx 55 1 slab is adopted where cranked bars main bars are provided on both sides of the. Typical slab reinforcement detail with the detail of distribution bar, spacing between bars etc. Special attention has to be paid to reinforcement detail at opening joints, as shown in. It was presented on 6th march, 2014 as part of the presentations of the subject.
No distinction is made or deemed necessary between flat plates, flat slabs, floor slabs, twoway slabs, and floor systems. On the other hand, when slab is supported on all four sides and bending take place in two directions are said to be two way slab. Slab reinforcement on the basis of bar bending schedule details architecture admirers civil engineering design civil engineering construction bridge construction construction design structural drawing structural analysis architecture symbols architecture details concrete mix design. Reinforced concrete design 1 design of slab examples. Culvert extension a portion of a culvert built beyond the limits of a previously existing culvert. The stairs slab is designed for maximum shear and flexure. Slabs are usually used in floor and roof construction. Though many details must be included in the design of a slab on grade, three important components are slab thickness, reinforcement requirements, and joint spacing. Typical slab reinforcement structure design detail autocad dwg plan n design. Reinforcement detailing of reinforced concrete slabs. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1.
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