The reinforcement rules are also similar in both directions. This Drawing Detail Length of Reinforcement in Slab External Supports.
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The slabs having ratio of longer length to its shorter length LyLx greater than 2 is called one way slab otherwise as two way slab.
. The slab has to carry a live load of 4 KN per meter square. Additional torsion reinforcement is required at corners when it is restrained against uplifting as shown in Fig1. The load is carried in both directions in a two-way slab.
Moments on a two-way slab is typically accomplished by finite element computer analysis. Two way slab reinforcement detail drawing pdf. Use M20 Concrete and 415 steel.
Types of Two-Way Slab Systems. The number of arches should be varied to correspond to the width of the watercourse. X 20 in and unfactored live load 100 psf.
Computer analysis of two-way slab. Two way slab reinforcement detail drawing pdf. The following slab reinforcement arrangements are specified in the BS 8110 Part 01.
Thickness of the slab is decided based on span to depth ratio specified in IS456-2000. Lecture 7 Two-Way Slabs Two-way slabs have tension reinforcing spanning in BOTH directions and may take the general form of one of the following. X 27 in interior beam dimensions 14 in.
Lets discussed the design code requirement specified for slab reinforcement details. Types of Two Way Slab There are 3 types of two-way slabs. 11b shows two center strips of a rectangular plate with spans l.
The lateral loads are independently resisted by shear walls. 1- Thickness for two way slab 180 2 180 100 2- Effective depth. X 18 in edge beam dimensions 14 in.
The steel fixers formwork drawing of a two-way slab. A two way slab is a type of slab that is supported by beams on all 4 edges and whose ratio of length to width is less than 2There are different ways of deta. Two-way-slabs system is more aesthetic than the other one and is easier to construct due to less framework.
Get One Month FREE at LinkedIn Learninghttpsbitly2Zq5t95Full Learn To Read Structural Drawing Course at the cheapest ratehttpbitly2Xw0dkvThis vide. Slab supported directly by columns are called flat slab. Detail Length Reinforcement Slab External Support.
Two-Way Concrete Floor Slab with Beams Design and Detailing CSA A233-14 Design the slab system shown in Figure 1 for an intermediate floor where the story height 37 m column cross- sectional dimensions 450 mm 450 mm edge beam dimensions 350 mm 700 mm interior beam dimensions 350 mm x 500 mm and unfactored live load 48 kNm2. Two-Way Slab Reinforcement Details Reinforced concrete Concrete slab Structural drawing Dec 18 2020 - Reinforcement detailing of a slab is done based on its support conditions. Section 1311 of ACI 318-111 identifies a two-way slab as a slab system designed for flexure in more than one direction.
D - Concrete Standards General Outline and Reinforcement Notes 3. Normally it is assumed. Detail of Reinforcement One and Two Slab Span.
31- Two way beside one way slab use the larger moment as shown below in the figure. Two-Way Slab with Beams Design and Detailing CAC Design Handbook The concrete floor slab system shown below is for an intermediate floor to be designed considering superimposed dead load 16 kNm2 and unfactored live load 48 kNm2. The simplified rules can be applied when slab reinforcement detail drawings are prepared when the following condition is met.
Two way slab design Q Design a reinforced concrete slab for a room of clear dimension 4-meter x 5 meters. Lecture 7 Page 3 of 13. Common Methods of Detailing Two-Way Slab Reinforcement Two-way slabs are generally defined as suspended slabs whose ratio of long span to short span bay length to width ratio is less than two.
A slab is built to provide flat surfaces typically horizontal in building roofs floors bridges and other types of structures. The Equivalent Frame Method EFM does not have the limitations of. In two way slab the corners may be held down by restraints or may be allowed to lift up.
The behavior of a two-way slab is similar to that of a one-way slab the only difference being that now the slab loads will be carried in both directions. Two-Way Concrete Floor Slab with Beams Design and Detailing Design the slab system shown in Figure 1 for an intermediate floor where the story height 12 ft column cross- sectional dimensions 18 in. The slab is supported all around walls of width 300 mm.
Design Of Reinforced Concrete Structures ii Two-Way Slabs 1 1. Two Way Solid Slab with beams This slab can be used for a wide variety of loading. A reinforced concrete slab is a broad flat plate usually horizontal with top and bottom surfaces parallel or nearly so.
And minimum percent as one way slab 1000 and according to ACI code is. And floor finishes 1 KN per meter square. Two-way slabs are extensively used in multi-story and commercial buildings.
Accordingly main reinforcement is. So the main bars are provided in both directions. Load transfer in a One-way slab b Two-way Slab Nilson Fig.
Da h -20 05 d bar db h -20 15 d bar 3- At continuous edges. For reasons regarding behaviour safety and economical design the two-way. Minimum Percentage of Reinforcements Provide reinforcement area of 013.
Inroduction When the ratio LSis less than 20 slab is called two-way slab as shown in the fig. Direct Design Method DDM is an approximate method and is applicable to two-way slab concrete floor systems that meet the stringent requirements of ACI 318-14 8102. This type is a development of the beam-and- girder system and is widely applied in skeleton constructions.
Slab may be supported on walls or beams or columns. Analysis and Design of a Industrial Building. 100AsAc 013 Anchorage of Bars at a Simply Supported End.
In many projects however these requirements limit the usability of the Direct Design Method significantly. Assume corners are held down. Two-way slabs are supported along all edges by beams or walls and are bent in two directions see Figure 15.
Detail of One and Two Way Slabs Reinforcement. Reinforcement Details in Two Way Slab. The use of flat plate system will be checked.
So part of the load is carried by one set and the remainder by the other. In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. It may be supported by reinforced concrete beams and is usually cast monolithically with such beams by masonry or reinforced concrete walls by structural steel members directly by columns or continuously by the ground.
It is convenient to think of such slabs as consisting of two sets of parallel strips in each direction and intersecting each other. Bending will take place in the two directions in a dish-like form.
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