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

 Design & Analysis of a Hostel building at Guwahati, Assam

 

AIM-

TO CARRY OUT MODELLING ,ANALYSIS ,AND DESIGN OF CONSTRUCTION  DRAWING G+3 RCC BUILDING  IN  GUWAHATI , ASSAM .

INTRODUCTION -

ETABS IS an engineering software that caters multistorey design and analysis .

-SAFE  is a art of  3d  infinite element technology for structural drawing .

-here we design g+3  rcc building  used etabs software next safe software for foundation design.

 

Procedure:

• Initially open the Etabs software and then provide the grid and story information.

procedure -

intially open etabs  than provide grid and storey information.

 

 

next we need to define material property , i.e.   M25  and rebar  fe 415 and fe500 

 

 

 

now , define section properties  i.e  size of beam  400x500 

, column  450 x650 and  thickness  of slab  150mm  thickness etc 

 define > section property > slab properties ,  also define another slab for stair as one way slab .

 

after defining material next we need to place  components .

1st we need to place frame ements and elements .

 

after that  define load cases  define > load cases > provide  DL , LL ,  EQX+ , EQY -, Eqx- , Eqy, Eqy+, Eqy-

 

 

now      we ,need to assign load according to code 

-for we need to assign load according to code .

 

-LIVE LOAD = 2 KN/M^2  [ IS 875  PART 2] 

BRICK WALL LOAD AS 3.5 KN /M

floor finishes as  1.5 kn/m^2

 

 

 

 

 

 

 

 

-Next assign the joints.

 Also define the mass source and response spectrum function.

next assign  joints  

also define mass source and response spectrum function .

 

 

Then define the load combinations.then define load combinations 

 

 

 After that, we can carry out the analysis and design.

after that ,we need out analysis and design .

 

After that we need to check for story drift for RSx and RSy whether

it is within the limits or not as per IS1893.

we need check storey drift for Rsx and Rsy whether it is within  the limits or not as per is 1893.

 

hense both storey drft are with in codal provision .

next carry out concerete frame design and extract design result for beams and column . both flexural and shear rebar .

beam longitudinal reinforcement 

beam shear reinforcement 

 

 

 

the  design result shows that 3 beams are failing in shear ,

hense indor make safe it safe we need to increase size of beam . 

2 beams size have been changed to  450 x650 mm and for other beam size is kept as 450 x750mm.

 

-beam longitudinal reinforcement .

beam -shear reinforcement .

 

column -longitudinal reinforcement 

 

 

column -shear reinforcement 

design is completed .

now export this base reaction and load condition in

f2k format for footing design using safe software .

 

 

now import the safe f2k file into SAFE  SOFTWARE ,

hense all the reaction and loads have been imported to the software .

 

define material for concerete and rebars .

 

define slab properties 

 

after using draw point option drop points for footing for each column .

 

now goto draw option and drafts points on footing for piles to devloped .

 

 

next provide pile ,using above option and material properties as pile 500.

 

then place , column along grid intersection .

 

define beam for  tie beams 

 

 

now , we need to assign springs at theses location where piles are placed .

for this we need to calculated spring constant .

 

-spring constant  = AE /L = 196346. 5 X 25000/ 10000 = 490873 N/MM.

THEN  ASSIGN SPRING CONSTANT. 

 

now , go to load combition for servicevility limit and ultimate limit .

 

 

next ,we need to check the design result .

 

displacement values are with in limit , hense safe .

 

• 

Reaction check :

• .

 

 

punching shear values with in in range .

• 

 

 

now , we need to design the strip .

 

 

-now , again carry the design .

-for strip layer  A .

 

-FOR STRIP LAYER  B 

 

 

-HENSE , the design  of footing is completed .

reinforcement drawing assosciated with  the design is given below .

• Reinforcement details of beam:

 

reinforcement details of column .

 

 

RESULTS -

MODELLING ANALYSIS AND DESIGN OF  G+3 BUILDING 

HAS BEEN CARRIED OUT SUCESSFULLY , USING ETABS AND

THE FOUNDATION DESIGN PILE CAP AND PILE HAS ALSO BEEN

CARRIED OUT USING  SAFE  software and also include details of reinforcement .