To calculate dead and live load for industrial steel structures and to apply them using TSD
1.
AIM: Calculate dead load in design report based on IS code and apply dead load on the model
- Finishes of 50mm
- Slab as per design
- Brickwall 150mm thickness
- Roofing load based on purlin size
- Ceiling loading 0f 0.3KN per sq m
PROCEDURE:
- Dead load calculations of the the structure as per the structures is given below
- Dead load =1.2KN/m^2
- Finishes= 0.05*24KN/m3=1.2KN/m2
- Brick wall for ground floor= 0.15m*5.2m*20KN/m3=15.6KN/m
- Brick wall for Intermediate floor=0.15*6.8*20=20.4KN/m
- Brick wall for top floor=0.15*4.8*20=14.4KN/m
- Ceiling load =0.3KN/m
- Roof load=1.5KN/m
Procedure to make the load on the structure
- Open tekla structural
- open the file we were working on the previous week.
- First we apply the wall panels and roof panels to the structure.
- Go to model tab->wall panels ->draw the walls on the structure(consider to provide walls between each columns)
- Similarly provide the roof panel and slabs for the structure
- After applying all slabs and panels on the structure
- Now we have to add different load cases
- Go to load panel->Load Cases->a new tab opens
- There will be some default load cases ->Add new and add wind and seismic load case.
- After adding the load cases we add some load combinations
- Go to load combination->combinations tab opens->click on generate and get the default combinations
- Now after giving the combination we apply the loads on the structure
- On the left bottom->select the drop panel and select the Dead load (it access the Dead load to assign on the structure)
- Now go to the levels->Ground floor
- Go to Load panel->select Area load>From the properties browser enter the value of DL(1.2)+finishes (1.2)
- after applying Dead load on the slabs of the structure
- After giving full load on the roof and ceiling
- For Dead load of the brick walls->Go to laod panel->Full UDL
- enter the brickwall load of the ground floor and apply the loads
- for the inner walls use the Line load and input the values
2.
AIM:Calculate live load in design report based on IS code and apply live load on the model
- Assume the loading based on IS 875
- Roof loading
- Consider equipment loading as 5KN per sq m
PROCEDURE:
- To get the values of live loads for different room we refer to IS 875 part2
- Workshop=5KN/m2
- Staircase=5KN/m2
- Corridor=5KN/m2
- Meeting room=5KN/m2
- Store room=5KN/m2
- Toilet=2KN/m2
- Canteen=3KN/m2
- Office room=3KN/m2
- Conference room=5KN/m2
- Equipment room=10KN/m2
- Rest room=2KN/m2
- Administration Room=5KN/m2
- To apply the Imposed load on the structure
- Go to the ground floor from the level panel
- From the down left corner ,select the imposed load so that the load applied will be Imposed load
- Now go to the load panel->area load->Input the live load of different room and select the room to apply that load
- after applying the Imposed load the resultent view of the structure
3.
AIM:Generate a calculation for 5T crane loading based on following inputs
- Centre to Centre of wheel = 10m
- Weight of crab = 40 KN
- Number of wheels = 4
- Wheel base = 2m
PROCEDURE:
Given data:
- Centre to Centre of wheel = 10m
- Weight of crab = 40 KN
- Number of wheels = 4
- Wheel base = 2m
- Crane capacity=50KN
- Weight of trolley=10KN
- Hook approach=1m
- Maximum Point load on crane=crane capacity+weight of trolley
- =50+10=60KN
- UDL= self weight of crane/distance between gantry rails
- =40/14= 2.89KN/m
- Now ∑MB=0
- =Ra*14-60*13-2.89*14*7=0
- =>Ra= 75.94KN
- ∑Fy=0
- =Ra+Rb=60+2.89*14
- Rb=24.52KN
- Now assuming self weight of gantry girder=1.4KN/m
- Assuming self weight of gantry girder=0.4Kn/m
- Total self weight=1.4+0.4=1.8KN/m
- Factored load=1.5*1.8KN/m=2.7KN/m
- Now load on each wheel= 75.94/2
- =37.97KN
- Factored laod on wheel=1.5*37.97=56.95KN or 57KN
- ∑MB=0
- =Ra*6-2.7*6*3-57*3.5-57*1.5=0
- Ra=63.7KN
- ∑Fy=0
- Ra+Rb=2.7*6+57+57
- Rb=66.5KN
- Max Shear force
- ∑MD=0
- =>Rc*6-57*6-57*4-2.7*6*3=0
- =>Rc= 103.1KN
- ∑Fy=0
- =Rc+Rd=57+57+2.7*6
- Rd=27.1KN
IMPACT LOAD:
- =10% of wheel load
- =0.1*103.1KN
- =10.31KN
- V=WL/2
- =1.5*6/2
- =4.5KN
- Max shear force= 4.5+10.31+103.1KN
- =117.91KN
- Lateral load analysis= 5% of total weight
- =0.05*60
- =3KN