Continuous One Way Slab
For End Spans and Interior Spans separately. In this case both the shorter and longer directions are subjected to bending.
Buildinghow Products Books Volume A The Reinforcement Ii Slabs Continuous Slab Reinforcement Concrete Structure Civil Engineering Construction
Design the slab system shown in Figure 1 for an intermediate floor where the story height 12 ft column cross-sectional dimensions 18 in.
. Hence the reinforcement is provided along shorter and longer sides of the slabs. Depending on where you live rigid insulation under a concrete slab might be required. A slab foundation functions as a base for new homes garages sheds gazebos and other construction projects.
Design continuous beams 3 A D and B 1. We know that the Self-weight of Concrete is around 2400 kgm 3 which is equivalent to 2454 knm 3 and the Self-weight of Steel is around 7850 kgm 3. Therefore the main reinforcements would be provided in both directions based on the magnitude of bending.
The slab is known as two way slab when the ratio of the long span is less than 2 and in-floor of multi-story buildings this type of slabs are mostly used. L28 for slabs with both ends continuous. The Code IS Code 456-200 Page No- 45 Cl.
Design the exterior panel of a flat slab of size 6 m 6 m with suitable drop to support a live load of 5 kNm2. Also the quantity of steel used in two way slab is more than the one way slab. This is why a vapor barrier under concrete is essential.
X 27 in interior beam dimensions 14 in. This is another way of classifying differential equations. Is how to design a 2 way spanning slab using BS8110.
Vapor barriers are a way to keep moisture from getting into the concrete. 26251c specifies a lap length of 2Ld in situations where the member is subjected to direct tension. L24 for slabs with one end continuous.
The Code specifies that the straight length of the lap should not be less than 15Ø or 200 mm. X t 2 x 0 is homogeneous. The floor system is supported by columns of size 500 mm 500 mm.
Two-Way Concrete Floor Slab with Beams Design and Detailing. Theres only one-way moisture leaves concrete though and thats via its surface. The two way slabs are economical to a size of 6m x 6m.
Well I am positive that it is NOT a ground water issue through my own long term investigation by many different means ie. As you can see all the parameters has been carefully analysed and solved for so you. 3750 150 400 Continuous beam design BS 8110 Example 1 A typical floor plan of a small building structure is shown in Fig.
ACI 318-11 Code provides two methods for two-way slab design one of which is the direct design method. X t 2 x t t 2 is non-homogeneous. BS 8110 part 01 is one of the.
1 Kilonewton Is Equal to 1019716 Kilograms So if we assume a column size of 300 mm x 600 mm with 1 steel and 255 why 255 so 3 m column hight beam size meters standard height the self-weight of the. As the force transfer is through development bond the lap length should at least be equal to the development length Ld. The two-way slabs distribute the loads in both directions.
If the continuous span is a Two spans then there is. Under the action of loads the two way slab will deflect in a dish or saucer-like form and if the slab is not cast monolithically with the supports like walls or beams corners of the two-way slab lift up. And L10 for cantilevers.
X 2_x x sint is non-homogeneous. A two-way slab can be provided in the following ways. If you have a concrete floor thats in continuous contact with a source of moisture youre going to have problems.
The IECC a regulatory code that ensures new construction is environmentally conscious requires a minimum of R-10 insulation in Climate Zones 4-8. In climate zones 6 7 and 8 by any combination of vertical insulation insulation extending under the slab or insulation extending out from the building. For the flat slab system of size 6 m 6 m provide suitable drop and fix up overall.
Where L is the span. Floor to floor distance is 36 m. Insulation located below grade shall be extended the distance provided in Table N110211 namely 2 ft.
Slab thickness for one way slab-thickness of one-way slabs must be at least L20 for simply supported slabs. The direct design method which could have been named the direct analysis method because it determines or prescribes moments for different parts of the slab panel without the need to conduct structural analysis is explained in the following sections. In climates zones 4 and 5 and 4 ft.
X 2_x x 0 is homogeneous. Two-Way Concrete Floor Slab with Beams Design and Detailing. Continuous Spans depending on the project.
Whether there is a term involving only time t shown on the right hand side in equations below. New gutters surface ground drains multiple drilled holes all the way through my slab with no signs of moisture 5 holes- 4 ft deep surrounding my slab on the affecting side of the house with NO ground water layers new. If the span is a Continuous one the user may run the software several times.
If the IECC requires rigid insulation under concrete slab youll also need to. These fancy terms amount to the following. Increased slab thickness may be required in many instances when continuous slabs are designed as a series of simply supported spans.
To build such a foundation one needs to have at least a basic construction skill set. X 18 in edge beam dimensions 14 in. X 20 in and unfactored.
This compliance option is explained this way. If the ratio is greater than 2 it is identified as a one-way slab. Use M20 concrete and Fe 415 steel.
Building a well-made slab foundation will determine the longevity of your project and potentially the stability of your home or other structure. You can check if you live in one of these zones on the IECC zone map. We recommended to use 5 to 6125mm to 150mm rcc roof slab thickness for one way slab.
Simply supported slabs spanning in two directions.
Buildinghow Products Books Volume A The Reinforcement Ii Slabs Continuous Slab Reinforcement Reinforced Concrete Slab
One Way Slab Systems Concrete Floors Concrete Concrete Ceiling
Reinforced Concrete Constant Width Cantilever Slab Detail Reinforced Concrete Structural Design Engineer Concrete Design
Buildinghow Products Books Volume A The Reinforcement Ii Slabs Continuous Slab Reinforcement Slab Continuity
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