Project 2_Design & Analysis of a Hostel building at Guwahati, Assam

Aim - To design and analysis the model and prepare the construction drawing from provided architectural drawing of G+3 building

Procedure -

• Open Etab software and then set model initialization setting and provide grid and story information

• Define the material properties as M25 concrete,Fe 500 for longitudinal reinforcement and fe415 for shear reinforcement

• Now define section properties
• Size of beam 400x500mm and column as 450x650mm and slab thickness as 150mm

• After defining the material properties ,place column using quick draw column,and draw beam and then slab

• At base to put pinned connection

• Now,Assign all loads
• Live load as 2kn/m^2 , Terrace live load 1.5 kn/m^2 ,Partition wall load 3.5 kn/m

• Define the mass source and response spectrum function

• Then define load combinations

• Assign Diaphragm to shell

• Check the model

• After that,Run the analysis

• Check for mass participating ratio

• After that,check for story drift for Eqx and Eqy,whether it is within limits or not

• Next,carryout the concrete frame design and then extract the design results for beams and columns.for both shear and flexural
• Check for concrete design
• Beam - Longitudinal reinforcement

• Beam - Shear reinforcement

• Column reinforcement details-
• Maximum reinforcement for column-2473mm^2
• Provide 12 nos of bar-16mm dia
• And provide 8mm stirrups

• Beam reinforcement details -
• Maximum longitudinal reinforcement at top-1650mm^2
• Provide 6 nos of bar-20mm dia at top
• Reinforcement at bottom-1486mm^2
• Provide 6 no of bars-18 mm dia

• The design is completed.Now,we need to export base reactions and load conditions in F2k format for footing design using SAFE software.

• Now,import the safe f2k file into SAFE software.

• Define the materials for concrete and rebar

• Define slab properties

• Define beam for tie beam

• After that using draw point option drop the points for footing for each column
• Now,go to draw option and draft points on footing for piles to be developed

• Next provide pile using material property as pile 500
• Also place column along grid intersection

• Now,assign spring pile constant
• Spring constant=AE/L = 196346.5 X 25000 / 10000 = 490873 n/mm

• Now,define the load combinations

• Next,Check the design result
• And run the analysis

• Check for Reaction

• Check for punching shear and it is also within limit

• Now,Design for strips A -

• Design for strip B -

• The design of footing is completed.

Result -

• The G+3 building is modelled and designed using Etab.