To calculate dead and live load for industrial steel structures and to apply them using TSD
QUESTION: 1
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
ANS:
AIM: To Calculate dead load in design report based on IS code and apply dead load on the model
Given Data,
Dead load=1.2 KN/m^2
Finishes = 0.05* 24 -1.2 KN/m^2
Brick-wall load
- Ground to intermediate = 0.15*20*5.2 =15.6 KN/m^2
- Intermediate to roof = 0.15*20*6.8 =20.4 KN/m^2
- Roof to top most floor= 0.15*20*4.8 =14.4 KN/m^2
Ceiling load= 0.3 KN/m^2
Roof load = 1.5 KN/m^2
PROCEDURE:
STEP: 1
- Open TEKLA Structural Designer software
- Now click on open file and open the week 3 assignment file
STEP: 2
- Now go to model tab and select slabs on beam option as shown
- add slabs to each floor as shown below
STEP: 3
- now we need to add different loads in load cases tab
- go to load tab and select load cases
- we will get a new window named as loading
- so add required loads in this window
STEP: 4
- Now go to load tab and select combinations
- we will get a new window named as loading
- click on combinations and add required combinations as shown
- now select on levels where we need to apply loads
- select the loads as required at the bottom left corner
STEP: 5
- Now go to load tab and select the area to apply load on slab
- Here we can see the area load applied on the slab
- Now go to Load tab select UDL applied on the brick wall
- Finally apply loads on the roof
RESULT:
Hence, we completed Calculation of dead load design report based on IS code and application of dead load.
QUESTION: 2
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
ANS:
AIM: To Calculate live load in design report based on IS code and apply live load on the model
From IS 875, we take the live loads as for as,
- Workshop- 5KN/m^2
- Staircase- 5KN/m^2
- Administration room- 5KN/m^2
- Store room- 5KN/m^2
- meeting room- 5KN/m^2
- conference room- 5KN/m^2
- corridor- 5KN/m^2
- Toilet- 2KN/m^2
- Rest Room - 2KN/m^2
- Canteen- 3KN/m^2
- Office room = 3KN/m^2
- Equipment room = 10 KN/m^2
PROCEDURE:
The Live loads are applied for all the floors, as shown below.
- Now select the level where we want to apply the loads.
- Now select the loads as required at the bottom left corner
- Now go to the load tab and select the Area to apply load on the slab
- Now we can see the Area load applied on the slab
RESULT:
Hence, we have Calculated the live load in design report based on IS code and application of live load on the model is done.
QUESTION: 3
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
ANS:
AIM: To Generate a calculation for 5T crane loading based on following inputs
Given Data:
Centre to Centre span of the wheel = 10m.
Weight of the crab = 40 KN
Number of wheels = 4
Wheel base = 2m
Crane capacity-50 KN
Weight of trolley = 10KN
Minimum hook approach = 1m
PROCEDURE:
Maximum point load on crane = crane capacity + weight of trolley = 50+10KN =60KN
UDL= Self weight of crane / distance between rails
= 40/14
= 2.89 KN/m
Moment at A
'Sigma' MA = 0
60*1-Rb 14-2.89*14/2=0
Rb= 24.5 KN
'Sigma' Fy = 0
RA-RB-60-2.89*14=0
RA = 75.9 KN
Now, let’s assume the total self-weight of the grinder =1.5 KN/m
Factored load=1.5 *1.5 = 2.25 KN/m
Load on each wheel = 75.9/2 =37.97 KN
Factored load=37.97 *1.5 = 57 KN
Moment at C:
Sigma' MC=0
RD*6 = 2.25*6*3-57*4.5+57*2.5
RD = 73.25 KN
Sigma Fy = 0
RC=RD=57=57=2.25*6
RC=54.25 KN
Max Shear Force:
'Sigma' Mf-0
RE x 6-57 x 6-57 x 4-2.25 x 6 x 3=0
RE = 101.75 KN
V=WI/2 1.5*6/2=4.5 KN
Impact load = 10% of wheel load = 10 % x 101.75 = 10.175 KN
Maximum shear force =10.175+ 101.75 +4.5 =116.425 KN
Lateral load analysis = 5% of total weight = (5/100) x 60 =3 KN