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

In this project, participants will get to experience the entire design process from modelling, analysis, design, and preparation of construction drawings. The architectural drawings of a G+3 RCC building is provided. The following information on the building is to be used:

• Location – Guwahati, Assam
• Function – Hostel block in an academic institute

AIM : 

     To this project, participants will get to experience the entire design process from modelling, analysis, design, and preparation of construction drawings. The architectural drawings of a G+3 RCC building is provided. The following information on the building is to be used

INTRODUCTION : 

SAFE is the ultimate tool for designing concrete floor and foundation systems. From framing layout all the way through to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment. SAFE provides unmatched benefits to the engineer with its truly unique combination of power, comprehensive capabilities, and ease-of-use.

This course is about foundation and slabs, you will learn how model and analyse and design:

• Isolated footing
• strip footing
• combined footing
• strap beam
• Pile caps
• Eccentric footing
• Raft
• Check punching
• drop panel
• import loads from etabs
• Import from Autocad
• Solid slab
• long term deflection
• flat slab
• Ribbed slab
• Beam
• Capital and drop panel

PROCEDURE : 

STEP 1: 

• Open the Etab software 
• On the left side top corner select the new model as shown below
• After click the new model there open the model initialization dialouge box
• In the box we can see a 3 option and then select the last option 
• Set the unit as " METRIC SI " and set the steel section data base as " indian " and set the code as 800:2007 for 3rd option. finally set the code 456:2000 for last option 
• After finishing the previous process then open new model quick template opened automatically 
• we can set the grid dimension as custom and also the story dimension
• Next we can set the number of storys and height of the story in x grid data 
• And also same the process in y grid data  and then ok 
• Next we open the story data and we need to add the story data upto 09 story and then added story data as shown below in picture
• And we give the name for the story as base, GF , story1, story2...3, TE, mumty level.
• And set the height of the GF as 2.4m and other all as 3.45m
• Then set the all story similar to story 1, except GF
• Finally click ok
• The model will be created sucessfully and the image shown below

STEP 2: 

• Next we go to the define option and select the material properties 
• Then there open a define material box and select the add new material option 
• And select the region "INDIAN" , material type "concrete", standard "INDIAN", grade "M25"
• then click ok
• After here opening the material property data box
• Set the material name like M25
• Then material type "Concrete" 
• Others are automatically update with using code given
• Finally click ok
• Again click the add new material 
• again set add new material properties
• Here we can set the matrial properties as "rebar" 
• Make them two types of material grade 415 and 500

STEP 3: 

• Next go the define option and select the section properties and go to the frame section
• Select the concrete rectangle and click ok 
• And set the material name as (B400 X 500) and material "M25"
• Go to the modify show rebar 
• And set the design type M3 beam and give the rebar material as HYSD 500 at top and HYSD 415 for bottom
• And then click ok
• Again Select the concrete rectangle and click ok 
• And set the material name as (B400 X 550) and material "M25"
• Go to the modify show rebar 
• And set the design type M3 beam and give the rebar material as HYSD 500 at top and HYSD 415 for bottom
• And then click ok
• Next we can open the same concrete rectangle and select the column in here 
• And set the material name as (C650 X 450) and material "M30"
• Go to the modify show rebar 
• And set the rebar as HYSD 500 at top and HYSD 415 at bottom 
• Finally click ok
• Again we can open the same concrete rectangle and select the column in here 
• And set the material name as (C650 X 650) and material "M30"
• Go to the modify show rebar 
• And set the rebar as HYSD 500 at top and HYSD 415 at bottom 
• Finally click ok

STEP 4: 

• Go to the define tab and select the section properties and then select the slab section 
• After there open a slab properties box
• and click modify option and then set properties name "slab 150"
• Give the slab material " M25"
• And modeling type " membrane"
• Give the thickness of slab as 150mm
• Finally click ok
• Go to the define and select the load patterns
• set or make the loads like EQX, EQY,EQX+, EQX-, EQY+, EQY-
• Give the IS code value for EXQ, EXY,EQX+, EQX-, EQY+, EQY-
• Taken the both load and set the (DIRECTION AND ECCENTRICITY)
• EXQ - only select the x-dirction
• EXY - only select the y-dirction
• Set other as given below image 
• And set the seismic zone factor for per code as per the rule of code book (0.36) 
• And set the site type as (II)
• This process is same for both the EQX, EQY,EQX+, EQX-, EQY+, EQY-
• Go to the load cases and check once
• Taken the define option and select the mass source
• After opening the mass source dialouge box
• Just give a modify option to modify it
• Just select only the specify load pattern and other then unselect it
• And give the load patterns as dead load, live load, wall load, finisher load
• Give the value of the dead load, finisher and wall load as (1)
• give the value of live load as (0.25)
• Then click ok

STEP 5: 

• Finally use the left icon items to place the slab, beam, column
• Go to the base plan delete all the slabs and beams ,columns
• And select all points and assign the joint --> restraint ---> first option and click ok
• After finishing the all load assigns
• Just click the run analysis option
• After complete the analysis go to the story responce option and check the story drift graph for all EQX and EQY
• And click concrete frame option and click check design model 
• And go the file option and go to export option
• export to story safe V12 file

STEP 6: 

• Open the safe software
• And go to the file option
• select the import and select the safe F2K file
• After import the file 
• Go to the display option and select show loads
• Select all the grid points
• Select the dead above option and then click ok

 STEP 7: 

• Go the define option and select the material properties
• give the name Fe500 and set material type as rebar
• The value of material weight as 77
• The uniaxial data value as 200000
• Give the other properties of material values are 500 and 545
• And then click ok
• Go to the slab properties data 
• And give the propertie name as footing
• give the slab material as M25 
• Select Type as footing and thickness as 450
• Again go the slab properties data
• And give the propertie name as column
• give the slab material as M25 
• Select Type as stiff and thickness as 450
• Next go the soil subgrade properties 
• And create the new data
• the name as soil 150 
• And soil modulus as 18000
• And then click ok

 STEP 8: 

• Select the "quick draw areas around point "
• give the shape of the object as rectangle slab
• give the properties as footing
• give the value of X AND Y direction as 2.5
• And draw the slab with using grid points
• here we using the 3 different type of slabs
• One as given below another type of slab size as (6.5, 4.5) and (6.5,6.5)
• And place the column as using same process
• using the column size as 0.6,0.6
• And set the soil sungrade properties
• Use the draw point option and place the point in the footing for make piles
• after finishing the point placing just select all the corners points to make circular slab
• And assign the point load and point spring for all the footing 
• and assign the beam at all the grids 
• right click the all slabs and set the materilas as (fe500)

 STEP 9: 

• After finishing the assigns just click the run analysis option
• And check the models
• Go to the reaction option 
• give the load cases as dead and also pick the load combination 
• And check the reaction of the model
• Go to the slab design option and set the strips A and B
• And then apply ok and then see the reaction of the strips

RESULT : 

• The model as been following the given attachment of architectural drawing 
• First we designed the G+3 building model by using the etab software
• And export the file to safe, and import the file to safe software
• finally modeled and designed by safe software