One Way Continuous Slab Design Example
Caprani 22 Example 1. Self weight SW of the slab height of the slab x unit weight of the concrete.
Reinforced Concrete Sloped Roof Slab Overhang Detail Concrete Beams Reinforced Concrete
Determine moments at critical sections in each direction normally the negative.
One way continuous slab design example. The design bending moments are zero at discontinuous ends negative at continuous ends and positive at midspans. For example the minimum slab thickness for a two-hour fire rating is 475 in Finally since shear reinforcement is not used in one-way slabs the concrete must be able to. Precast planks fall in this group.
F cu 20Nmm² F y 410Nmm² the building is residential Floor Finishes and Partition 20kNm² Service Load 05 kNm². Design a simply supported one-way solid slab a span of 4 m required to support service live load LL3 KNm 2 and self-weight only. In this video I have explained how to design one way continuous slabs as per IS CODE method.
The shorter span of the one-way slab is provided with the main reinforcement while the longer span is provided with the distribution reinforcement. Fc28 MPa and f y 420 Mpa. In the above figure even though Slab-A and Slab -B have common edge that.
Continuous beam and slab design 5. ACI 318 02 05. There are two or more spans.
Check For Availability Of. 31 Continuous One Way Slabs Description This application calculates bending moments using ACI coefficients and determines the required reinforcing-bar spacing for continuous one way slabs. Examples of the portion of slab to be included with the beam under 1324 45o hhwf4 bhb hwww f28 bw.
Simply supported One way slab MAIN REINFORCEMENT Effective depth. Where U is factored loads D is dead load and L is live load. This will be designed panel by panel starting from panel 1.
Prefere procedure-2 For simply supported one way slab. Height of the slab 168mm 0168m. Ultimate Behavior of One-Way Spanning Slab Linear Elastic Analysis Methods such as moment distribution are linear elastic methods.
Slabs are plate elements forming floors and roofs in buildings which normally carry uniformly distributed loads. Step-1- Checking one way or two way slab. ACI design factors for calculating shear and moment in slab Limitation.
Spans are approximately equal with the larger of two adjacent spans not greater than the shorter by more than 20 percent. Load take-down on slab Preliminary design of slab Bending moment reinforcement Shear force reinforcement check Control crack widths for reinforced concrete Span effective depth ratio. That is the load factor at.
End moments effect of beam stiffness modelling frame. Check the Type of Slab. For this slab panel A has two discontinuous exterior edges and two continuous interior edges panel B has one discontinuous and three continuous edges while the interior panel C has all edges continuous.
Spanning one way between beams or walls Spanning two ways between the support beams or walls Flat slabs carried on columns and edge. For being both ends continuous minimum slab thickness L28 15 x 12028 643 in. Calculate the height of the slab h height of the slab effective depth half of main reinforcement cover.
Unfactored live load L does not exceed three times unfactored dead load D. One way slab is normally designed for gravity load only. SLAB DESIGN Reading Assignment Chapter 9 of Text and Chapter 13 of ACI318-02.
Design of continuous beams and one-way slabs provided. Some of the prominent examples of one-way slabs are the cantilever slabs chajjas and verandahs. To see their result for this slab we will find the load factor λ to cause failure.
There are two or more spans. For continuous slabs the support ends possess negative moments and the middle strip. Design of Slab Examples and Tutorials by Sharifah Maszura Syed Mohsin Example 1.
Consider only a 1 ft width of beam. H 130 12 2 25 161mm take h 168mm. Slabs may be simply supported or continuous over one or more supports and are classified according to the method of support as follows.
One-way slab 1 When a rectangular slab is supported only on two opposite edges it is a one-way slab spanning in the direction perpendicular to the edges. Design the floor slab below. Intermediate values calculated include slab weight service and factored loads shear minimum slab thickness required for.
Civil Engineering Design 1 11 Dr. Calculate the loading and Design load. Typical arrangement of reinforcement 6.
The edge common to slab 1 and 2 is a continuous edge similarly the edge common to slab 2 and 3 is continuous. One Way Slab Design Example. Rest are discontinuous edges.
Again keep in mind that you have to detail ie. In other words the one-way slab is supported by beams in such a way that the load is carried along one direction. The floor finishes ceilings and services have been taken as 10 kNm 2.
Provide reinforcement and cast construct the slab in such a manner that you make the edge common to the two slabs continuous. CE 403 Fall 2013 One-Way Slab Design 3 4 ACI 318-11 Referenced pp 2 4 rating. Determining M and V in continuous beams using load patterns M and Envelopes 7.
H d Ø2 C. 2 When a rectangular slab is supported on all the four edges and the length-to-breadth L B ratio is equal to or greater than two the slab is considered to be a one-way slab. The concrete grade of the slab is C3240.
This panel is two adjacent edge continuous or two adjacent edge discontinuous. The office loading has been taken as 75 kNm 2. I hope you liked this video If yes please subscribe to my channel.
The design load combinations are as follows. Example of load transfer in one-way floor systems 4. A simply supported slab is designed to undertake plant loading on the Roof.
Design of a Two-Way Continuous Slab Step 1. In this video the basic theory of One way continuous slab as per IS456 is explained also with solved exampleThe solved example is calculated with detailed. The steps for a continuous spanning slab design example is shown below.
The basic design procedure of a two-way slab system has five steps. One Way Slab Design Example. Hence the slab is designed as a two-way slab.
D h c nom-05Ï• bar 150- 30 -0512 114 mm Design moment M ED 1918 kNm K Mbd2f ck 1918 x 106 1000 x 1142 x 25 0059 K bal 0167 Compression reinforcement is not required. Since lylx 935 2571 2 This slab is a one way slab prefere procedure 1 Step-2- Assuming depth of slab.
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