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Model 3 Building having Ribbed Slab
III. METHODOLOGY AND MODELLING
Modeling and analysis of this research is done in CSi ETABS software. For complex structural analysis, a software like CSi ETABS helps in visualization of the structural model and also deprive the tedious calculation of the analysis results in complex structures like the structures under consideration in this study. The table 1 is explained the model cases used on in this project.
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Table 1: Model Description S. No. Model Description Structure Description 01 Model 1 Building having Flat Slab with Drop Panels 02 Model 2 Building having Waffle Slab
03 Model 3 04 Model 4 Building having Ribbed Slab Building having Secondary Beams
A. Structural & Material Properties Table 2 and 3 enlist the structural and material properties respectively.
Table 2: Structural Properties Structural Properties S. No. Descriptions Of Parameters Dimensions / Comments
A) Common Parameters 1 Structure type 2 No of storey /total height 3 Plan area Rigid frame Buiding G+9 /35.00 m 49.50 m x 82.50 m
4 Column size 600 mm x 600 mm
5 Spacing in grid in x –direction 6 Spacing in grid in y –direction 8 Individual storey height B) Model 1: Building Having Flat Slab with Drops 1 Beam Size 2 Slab Thickness without Drop 3 Slab thickness with Drops 4 Drop Size 5 Thickness of Drops C) Model 2: Building Having Waffle Slab 1 Beam Size 2 Slab Thickness 8.25 m. c/c 8.25 m. c/c 3.50 m.
No beams 285 mm 360 mm 3.00 m x 3.00 m 75 mm
400 mm x 700 mm 150 mm
3 Overall Slab thickness 450 mm
4 Stem Width 5 Spacing of Stems in X-Direction 6 Spacing of Stems in Y-Direction D) Model 3: Building Having Ribbed Slab 1 Beam Size 250 mm 1500 mm c/c 1500 mm c/c
400 mm x 700 mm
2 Slab Thickness 3 Overall Slab thickness 4 Stem Width 150 mm 450 mm 250 mm
5 Spacing of Stems in X-Direction E) Model 4: Building Having Secondary Beams 1 Beam Size 2 Slab Thickness 1500 mm c/c
400 mm x 700 mm 150 mm
3 Secondary Beam Size 5 Spacing of Beams in X-Direction 250 mm x 400 mm 2000 mm c/c
