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Design of Concrete frame based on several codes for resisting to earthquake
Engineering and Construction
Pages 24 (6024 words)
THE EARTHQUAKE RESISTANT CONCRETE FRAME BUILDING – WITH SPECIAL FOCUS ON BEAMS AND COLUMNS In this paper we are going to compare two codes on the basis designing the earthquake resistance concrete frame building. The comparison focuses around beam and columns of the building.
Iranian Code 8% Euro code 4% Table 1 For Eurocode the effective flanged width is ‘bff’ and for Iranian code it is ‘b’ Figure 1 Special condition should be followed when the beam elements are being designed such as the difference between rectangular beam and flanged beam should be known. Flanged beams are generally the rectangular beams which work with slabs and the part of slab element acts with the top part of the beam. If it is below the flange, then the section needs to be designed by taking into consideration the specific area of concrete section for compression part. The most crucial part in design is the design for flexure and shear. The flexure design has to be repeated twice, one for support condition and another for span condition. Design of Beam Sections under Iranian Standard: Isolated T-Beam Figure 2 Figure 3 Rectangular beams with tensile reinforcing: For this type the beam width b equals to 12 in (305mm) when the moment and shear are expressed per foot (m) of width. The working stress design formula for this is as follows: b = width of beam [equals 12 in (304.8 mm) for slab], in (mm) d = effective depth of beam, measured from compressive face of beam to centroid of tensile reinforcing M = bending moment, lb . ...
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