This will give you an idea how thick your new slab needs to be and in either case I would not only install plenty of 10 to 15M reinforcing steel in either direction spaced 812 inches in a common grid pattern and every 46 feet in both directions I would vertically dowel into the existing slab or granite bedrock and tie the grid pattern of steel to the dowels at a minimum of 2 inches high. A filler slab with two stacked clay tiles as shown in the sketch above also increases the thermal insulation of the slab.
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The filler slab is a slab construction technology in which filler material part of concrete in the bottom of the slab is replaced and as compared to reinforced cement concrete slabs it consumes less concrete and steel.
. This method of construction is called filler slab. Easy to use Software becoming more widely available Very accurate if used properly better than Grillage. These filler materials are so placed as not to compromise the structural strength stability and durability resulting in replacing unwanted and non-functional tension concrete from below and thus resulting in economy of high energy materials consumption and considerable cost saving and decreased dead load of the slab.
This filler slab is analyzed using STAADPro and ANSYS software. In case of continuous slab the support section is designed as doubly reinforced rectangular beam. The elements can be triangular rectangular or quadrilateral.
Filler slab construction which reduces the self-weight of slabs and has reduced loads along the rest of the load path up to foundation is an effective way for cost reduction. The fillar slab is invented by the Ar. Laurie Baker and these technology is mostly use as low.
Royal Insurance Corporation of Bhutan Ltd. To sum it up consider using a filler slab for the following. Introduction Concrete slabs on grade are a very common type of concrete construction.
Filler slab is alternate slab construction technology where part of concrete in bottom of slab is replaced by filler material. Filler slab is alternate slab construction technology where part of concrete in bottom of slab is replaced by filler material Due to reduced concrete and thus about 40 less steel is required so these fillar slab technology make huge difference between normal slab cost and fillar slab cost. Such calculations require a knowledge of the supporting beam or column dimensions A reasonable 1 8.
Patterned ceilings Filler slabs provide aesthetically pleasing patterned ceilings. Matthew Stuart PE SE FASCE SECB COURSE CONTENT Slab on Grades Construction. Filler materials are placed without compromising structural strength stability and durability replacing unwanted and non-functional tension concrete from below - resulting in cost savings 20and decreased dead load.
5 Structural design The filler slab may be analyzed as a two way spanning grid slab. The Materials required for base and the sub - base preparation. FILLERS RE-BARS SERVICE LINES.
The filler slab can be designed like a conventional RCC slab as per IS 456-2000 design guidelines The thickness of filler material should not exceed the depth of the neutral axis. The midspan section is designed as a T-beam with cast-in-situ concrete of flange taking compression and reinforcement at the bottom of the slab in the web portion taking tension. Filler slab is compared with the conventional slab of same size.
Create an interesting look. Determine whether the slab geometry and loading allow the use of the direct design method as listed in DDM. The PDF covers the following topics.
The design elements required for slabs on ground are. Slab design such as a structural reinforced slab a slab that includes stiffening beams or a slab not directly supported by the soil such as on a beampile or stem wall foundation. Save on construction cost.
Generally speaking for a slab thickness of 125mm the filler material depth should not exceed 60mm. The filler slab can be designed like a conventional RCC slab as per IS 456-2000 design guidelines The thickness of filler material should not exceed the depth of the neutral axis. The direct design method.
The vapor retarder can be provided if necessary. Reduce use of energy intensive materials embodied energy. In Nigeria clay hollow pot and sandcrete blocks have been successfully used but on the rise is the polystyrene.
The thickness of the concrete slab intended to construct. Select slab thickness to satisfy deflection and shear requirements. Determination of bending moment and shear force.
The slab is represented by a mesh of slab segments called elements joined to each other at nodes. The Construction and Design of Concrete Slabs on Grade D. The filler materials are granite dust and foundry sand.
The Concrete Mix proportions for the desired. This PDF file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. The major advantage of ribbed slab with permanent blocks is the reduction in the quantity of formwork required given the fact that strength of the blocks is normally not assumed to contribute to the strength of the slab in design.
In most houses the filler material is left open without plastering to form aesthetic design symmetry but some residents prefer to cover the space with Plaster of Paris. The design integrity of a filler slab involves careful planning taking into account the negative zones and reinforcement areas. Properties of flat slab.
The Strength values of concrete Both compressive and flexural strength. What is filler slab. FE is increasing in popularity.
Improved thermal comfort for the interiors. The basic principal is that the concrete in bottom half of RCC slab is structurally not required as concrete acts as compression material which is required in top half portion of slab. Floor slabs can range from a simple residential basement slab to a heavy-duty industrial floor.
Flat Slab Design PDF 2. Owing to the construction of the slabonce done with the shuttering the reinforcement are laid in a grid form with the sizes depending on its structural designWith considerations in choosing the filler material it has to be inert in natureless weight and has to fit the structurally reinforced gridThe filler should be soaked in water well before being placed as.
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