Good articulation of the underlying concept but you're referring to the secondary beam as the primary beam and vice versa. Secondary beams carry load to the primary beams.
I have a question, is there anyway to include the self-weight of the beams and columns in your calculations? as you didn't do that. Thank you for this video, very informative.
It is easy to add on the self weight. Often the estimate of floor load includes a kg/m2 allowance for steelwork. However, if you want to include it simply add a line load when doing each beam, and an extra point load on the columns.
@@firesun I’m really not sure what you mean. I was wondering is there was something like the beam weighs 20kn/m so we add that plus the floor load and that is what the column takes and then we add the column weight in kn/m to it to find the total load. This is what I was thinking. In summary is it possible to add the weights of the members in kn/m?
@@rayrim-rukeh1967 - I think we are saying the same thing. Hence: (1) analyse a slab and get a line load on a steel beam. (2) analyse the steel beam for the line load of the slab + the self-weight of the beam. (3) analyse the next beam along with its self-weight as well. (4) when analysing the column add a point load for the weight of the column. In real buildings you normally don't know the beam sizes already so it is easier to have an approximate steel weight per m2 and use that to get the beam sizes. Also, typical floor beams are normally around 0.3-1 kN/m so do not dominate the loading - the slab and imposed loads govern the design.
Glad i found this channel
you do a great job
Thanks for the videos.
Thank you !
Good articulation of the underlying concept but you're referring to the secondary beam as the primary beam and vice versa. Secondary beams carry load to the primary beams.
Apologies - you are correct. Primary and secondary labels are swapped around.
I have a question, is there anyway to include the self-weight of the beams and columns in your calculations? as you didn't do that. Thank you for this video, very informative.
It is easy to add on the self weight. Often the estimate of floor load includes a kg/m2 allowance for steelwork. However, if you want to include it simply add a line load when doing each beam, and an extra point load on the columns.
@@firesun I’m really not sure what you mean. I was wondering is there was something like the beam weighs 20kn/m so we add that plus the floor load and that is what the column takes and then we add the column weight in kn/m to it to find the total load. This is what I was thinking. In summary is it possible to add the weights of the members in kn/m?
@@rayrim-rukeh1967 - I think we are saying the same thing. Hence: (1) analyse a slab and get a line load on a steel beam. (2) analyse the steel beam for the line load of the slab + the self-weight of the beam. (3) analyse the next beam along with its self-weight as well. (4) when analysing the column add a point load for the weight of the column.
In real buildings you normally don't know the beam sizes already so it is easier to have an approximate steel weight per m2 and use that to get the beam sizes. Also, typical floor beams are normally around 0.3-1 kN/m so do not dominate the loading - the slab and imposed loads govern the design.
@@firesun Okay, thank you so much. Really appreciate it.
could you let me know that the code SD42 of which country
In South Africa we use SANS codes. However, this video is not based on a particular code.
thank you sir