But bermudez says the design is relatively simple to create using finiteelement software. The existing area is sloped to provide for natural surface drainage of rainfall away from the building foundation. Supporting area for bearing of footing, which is sloped or stepped footing may. The floor is first cleaned and then some bitumen is sprinkled over the surface and then bitumen stabilised sheets are rolled over the surface and joined with other at edges by applying heat through gas torch. To compare manual results of analysis with software results. A one way slab has structural strength in shortest direction.
Roof pavers guide specifications for construction of hydrapressed slab roof pavers section 32 14. Cross section detail of a reinforced concrete sloped inclined roof slab overhang cantilever detail, supported from a concrete beam. Download design of reinforced concrete structures by n. Crack in the roofs over a period of time, the rcc shrinks forming cracks in the roof. Refer to page r 2 for the location of the roof area to be designed. These books are used by students of top universities, institutes and colleges.
Reinforced concrete sloped roof slab overhang detail cross section detail of a reinforced concrete sloped inclined roof slab overhang cantilever detail, supported from a concrete beam. Reinforced concrete sloped roof slab overhang detail. The reinforced concrete features combined the strength of cement and steel bars which are the basic components of a modern structural design. Similarly, for sloped roofs, the polymer based chemical and cement slurry is directly applied on the top of.
Single pitch roof design is a type of sloped roof design with monosloping roof surface. How to build and setup a concrete foundation for garages, houses, room additions, etc part 1 duration. The building is located in seismic zone iii on a site with medium soil. Roof framing consists of preengineered wood trusses at. Analyse and design beams, slabs, columns and footings. Find the following parameters for design moments in step 2 per unit width step 4 note. Design of slab for flexure 067 m unit width of slab. Interior walls of the living area elevated are composed of 2x4 studs at 16 inches on center o. Inclined pitched roof concrete slab reinforcement example.
Structures introduction purpose of structural design. Reinforced concrete slab design using the empirical method bridgesight solutions for the aashto lrfd bridge design specifications bridgesight software tm creators of effective and reliable solutions for the worlds bridge engineers 2688 venado way rescue, ca 95672 phone. Rcc roof slab with beam is called flat beam slab or flat slab beam. A six storey building for a commercial complex has plan dimensions as shown in figure 1. A waffle slab, giving added strength in both directions. Or should i use 10mm12mm bars for invisible beams through the centre rcc roof of large rooms. I would like to hear if someone has dealt with this situation before, i am thinking in considering the ridge as a rigid support as it is going to be nearly perpendicular to the slab on the other side gable roof. Rcc roof slab ultimate guide to find rcc roof slab.
Reinforcement detailing of reinforced concrete slabs. These slabs could be cantilevered or simply supported slabs. Samphoas house plan is free house design plan with pdf jpg autocad and sketchup files. In most cases this surface is not linked to another. Reinforced concrete slab design and detailing guide is456. Planar roof slab the planar roof slabs are further classified as follows. This permits concrete placement without the use of top forms. Axial forces from snow loads and roof live loads should usually not be considered simultaneously with an extreme wind load because they are mutually exclusive on residential sloped roofs.
A two way slab has structural strength in two directions. Reinforcement detailing of a slab is done based on its support conditions. Following are the rcc slab design and detailing guidelines. The main span beams are inverted to form roughs for a water pond and thus form a base for the moving arrangement of an insulation panel. Have you come up with an inventive way to place concrete more efficiently or to solve an annoying concreting. Slabongrade foundation with floor and footing poured as one unit and the floor at, or only slightly above, ground level. A ribbed slab, giving considerable extra strength on one direction.
Plan view of a reinforced concrete pitchedinclined slab. Reinforced concrete sk 33 section through slab showing stress due to moment. Based on the boundary condition, you can determine the axial thrust and the bending moment. Tips for laying rcc slab roof on 12092014 9091 views 3 comments rcc slab laying is one of major step in any type of construction so it is mandatory to know all the points related to laying rcc slab. Cross section detail of a reinforced concrete sloped inclined roof slab overhang cantilever cad detail drawing, supported from a concrete beam. Slabs are constructed to provide flat surfaces, usually horizontal in building floors, roofs, bridges, and other types of structures. Roof on masonry wall and projecting outside the building. If the problem is statically determinate, the equilibrium equations would. Reinforced concrete slab design using the empirical method. Due to the structural condition, the slab will have.
Rcc slab design depends on the on the dimensions of the slab after which the slab is termed as a oneway slab or a twoway slab in the design of rcc structures, column design and beam design are to be done before we start with rcc slab design basic rules followed in the design of simply supported slab. Sloping slabs under gravity load would be subjected to bending and axial thrust. Sloped roof drip edge detail with a cant strip and raised edge perimeter flashing for a tile roof. Apr 14, 2017 cross section detail of a reinforced concrete sloped inclined roof slab overhang cantilever cad detail drawing, supported from a concrete beam. Inclined reinforced concrete roof slab ridge clay tiles. The purpose of structural design is providing a safe structure complying with the users requirements. A system for building sloped concrete roofs concrete construction. If the main reinforcement of the slab is parallel to the beam.
Guide to design of simply supported slabs design of rcc. Design of reinforced concrete structures ii twoway slabs 1 1. Analysis and design of sloping slab and beam structural. After reading this article you will learn about the r. Roof leaks causes and prevention viya constructions. Rcc roof slab in the construction industry, when they use the word concrete, they are talking about reinforced cement concrete, also known as rcc. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is 456. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. Apr 14, 2017 reinforced concrete sloped roof slab overhang detail. Slab may be supported on walls or beams or columns. The project aims at analysis and design of pyramidal slab as per standard provisions. The roof should have a slope of at least 3 on 12, with a practical maximum of 6 on 12. Design the roof slab, beam and column of house given in figure 1.
Detailed analysis and design as per indian standards. Example of a 12x12m roof slab with a 4 by 4 columnbeam support layout. Reinforced concrete sloped roof slab overhang detail youtube. Abstract this report is based on the design of rcc structure under the guidance of mr. Under this scope of work sow, the contractor shall remove of all existing vegetation of new ongrade concrete slab construction area. This project is the implementation of our theoretical part into reality. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
We are designing a two story home where the sloped roof 10. Reinforced concrete rc is a composite material in which concretes relatively low tensile strength and. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Bending will take place in the two directions in a dishlike form. Autodesk dwg trueview is a free cad viewer that will. Flat slab supported directly on columns without beams. Is it ok using 8mm and 6mm tmt bars for whole work. The project also consists of cross check of manual results with the. In normal course, the beam project out side the slab, but in case of monolithic construction where height consideration is there, flat slab beam design is adopted for construction. Why are my rcc slabs getting cracks after 4 hours of concrete pour. Reinforced concrete design 1 design of slab examples and. Pdf reinforced concrete design or reinforced cement. The projecting portion of the slab is cantilever with free support on the masonry wall. Thanks to the advance of technology this particular design has become very popular in the past decade.
Limit state method is used for analysis and design. Design of reinforced concrete structures ii twoway slabs. Reinforced concrete roof and floor systems rigid diaphragms. There is a nominal strength that is reduced by a factor which must exceed the factored design stress. Accordingly, main reinforcement is required in the two directions. Sir, i perhaps there is some confusion regardig my posting.
Slab supported directly by columns are called flat slab. Here is a detailed article with all the information regarding procedure of rcc slab roof laying. Subramanian designed to meet the needs of students aspiring to enroll into the undergraduate civil and structural engineering programs, design of reinforced concrete structures has been proven to be useful for postgraduate students as well as an indispensable reference for practicing engineers and researchers. I meant whether sloping slab can be applied usual dl and live load over it in as in the case of rcc hz floor in etabs. Slab reinforcement, cantilever reinforcement, slab thickness, roof apex reinforcement. Various types of rcc slabs design of rcc structures. A roof crack paves way for rain water to seep in to the house. The slab has to carry a distributed permanent action of 1. Foldedplate design structurally these roofs are folded plates, so they require an engineering design. Sloped reinforced concrete slab structural engineering.
Design and detailing requirements for shear, chord, and shear transfer. Get this detail drawing in cad dwg, dxf and pdf formats, use it with your projects and save yourself valuable time. This guide specification serves as a guideline for slabs supported by. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. Please wash your hands and practise social distancing. The slab may be supported by walls or by reinforced concrete beams usually cast monolithically with the slab or by structural steel beams or by columns, or by the ground.
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