To calculate dead and live load for industrial steel structures and to apply them using TSD
1.
Aim:
To calculate dead load in design report based on IS code and apply dead loads on the model
Procedure:
Step 1:
- Dead load = 1.2KN/m^2
- Finishes = 0.05*24 = 1.2KN/m^2
- Brickwall load = 22.28KN/m^2
- Ceiling load = 0.3KN/m^2
- Roof load = 0.75KN/m^2
Step 2:
Open TEKLA and now we need to add different loads in load cases tab
Step 3:
Now add the load combinations and add the finishes load to the levels
Now add the Brickwall loads,ceiling loads and Roof loads
Result:
2.
Aim:
To calculate live load in design report based on IS code and apply live loads on the model
Procedure:
Step 1:
From IS875,we take the live loads as for as,
Workshop,Staircase,Administration room,Store room,Meeting room,Conference room,Corridor = 5KN/m^2
Toilet,Rest room = 2KN/m^2
Canteen,Office room = 3KN/m^2
Equipment room = 10KN/m^2
Now we need to apply the live loads for the floors
Result:
3.
Given,
- Center to centre span of the wheel = 10m
- Weight of the crab = 40KN
- Number of wheels = 4
- Wheel base = 2m
- Crane capacity = 50KN
- Weight of trolley = 10KN
- Minimum hook approach = 1m
- Maximum point load on crane = crane capacity + weight of trolley = 60KN
- UDL = self weight of crane/distance between rails = 2.89KN/m
Moment at A:
σ Ma = 0
60*1-Rb*14+2.89*14/2 = 0
Rb = 24.5KN
σ Fy = 0
Ra +Rb-60-2.89*14 = 0
Ra = 75.9KN
Now lets assume the total self weight of the grider = 1.5KN/m
Factored load = 1.5*1.5 = 2.25KN/m
Load on each wheel = 75.9/2 = 37.97KN
Factored load = 37.97*1.5 = 57KN
Moment at C:
σ Mc = 0
Rd*6 = 2.25*6*3+57*4.5+57*2.5
Rd = 73.25KN
σ Fy = 0
Rc+Rd-57-57-2.25*6
Rc = 54.25KN
σ Mf=0
Re*6-57*6-57*4-2.25*6*3 = 0
Re = 101.75KN
V =Wl/2 = 1.5*6/2 =4.5KN
Impact load = 10% of wheel load = 10%*101.75 = 10.175KN
Maximum shear force = 10.175+101.75+4.5 = 116.425KN
Lateral load analysis = 5% of total weight = 3KN