₦airaland Forum

wow

hakeem4:
sconp did the architect restrict your truss depth? can you reconfigure your truss members so you do not have too many struts and ties?

Yes he did, though he has said I can go as high as 2m now. The struts spacing are to coincide with the purlins, max spacing 1.5m

yungmin:
Bro, that section is still quite small. I did a 40m span mansard truss sometime ago. The sizes I got for both top and bottom chords where L200x200x16. You know if you are to use parallel chord truss for this problem, your span/depth ratio should be in the range of 15 to 25. In other words, you need a minimum of 2meters depth of the truss.

In the analysis I did for this, the lowest section I could get was L150x150x15. I intend using span/depth ratio of 10-15 for the parallel chord truss I would do. What did you end up using for the mansard you did?

sconp:
Can a 75x75x6 double angle section replace a 150x150x10 single angle section theoretically?

This was the question I was referring to though. cc: yungmin

hakeem4:
Copy the command file and paste it here on NL

I tried to post the command file but NL said it was too long. I have attached the model.
I stripped it bare, no wind load.

Loads were applied on the purlins, I have another model where I applied the loads nodally and that was the one that gave the least section(L150x150x15) I have gotten so far

Thanks

yungmin:
Check the span / depth ratio to be very sure it is correct. Otherwise the members would continue to be very heavy. Pls reference truss design in the steel designers manual. Also explore portal frame system as suggested by @Hakeem.

Thanks, yes I am referencing SDM.
I'll appreciate if you can do justice to that question above on single and double angle sections.

hakeem4:
sconp can you send me your model let me try

I'll do that thanks.

yungmin:
Why not change it to I or H beam? And also, try double angle or Channel section. And above all, I hope you used the required height for the truss? And more so, what type of truss? You should use a parallel chord truss for that span.

Can't use a H-Beam. I intend to use a double angle section like you posited. The truss is a sort of combination between warren and Pratt, see attached diagram (450mm and 1500mm).
I would change truss type to parallel chord with required height and get back to you.

Can a 75x75x6 double angle section replace a 150x150x10 single angle section theoretically? Doesn't seem to work that way on staad or I am probably not doing it right.

Thanks.

hakeem4:
use back to back angle (double angle) as yungmin suggested. Must it be a truss? Why don’t you try portal frame or linto roof style

I intend to switch to portal frame as a last resort if I can't figure the truss out, someone who doesn't use staad thinks it's possible to get something far lower.

I have a steel problem o. I am designing a 30m truss and ending up with a very heavy angle section. Anyone have a way I can reduce it or get a more economic section?

brogxy:
People hardly listen to this/such advice.

Sometimes, not because they don't want to listen but their present predicament might not allow for such advice.

nohitch:
Ok I’ll check

It's very important to me. I would appreciate if you can help.

nohitch:
hey man i Get you

But then, when you follow someone who has seen the failures and makes you follow the success stories he has had..the tough journey becomes less stressful

Hi nohitch, I sent a particular mail to you which is of great interest to me. I would appreciate if you could check it and get back to me. I'll resend this particular mail, it'll come from "CS********@gmail.com"

topsy23:
The quantities are okay since your electrical gave you the list..

I don't know the type of cable he is buying . Tell him to get you original cables

Alright thanks.

Good day Sir and compliment of the season.

neduboo:
Sir, can you please explain to me in a simple term so that I can understand you clearly. I was told that piling will prevent the building from sinking due to the nature of the soil there. Or is it that bungalow doesn't require piling?

Hi,

Let me try to breakdown what has been said.

You have an architectural plan for a bungalow and you are making plans to build. However, your land is a water-logged area I.e A swamp.

As such you shouldn't take structural advice for this kind of project from just anybody, so that you don't end up with regret.

The right thing to do is to consult a structural engineer, he'll head to the site to see for himself and he'll recommend that you do a soil test to ascertain the allowable bearing capacity of the soil and type of foundation that would work in that area.

After which the structural engineer would do the structural design and he'll be the one to estimate from the structural design the amount of rod you should buy.

hakeem4:
Well it is my favourite analysis software, so I might be bias about it.

I actually like staad pro because it allows you use your intuition. You can fully release moments, partially release moments. You can tension members, or force them to behave as a compression member.
It produces good and elaborate calculations sheets.

Staad foundation is the best when it comes to foundation design.

But I prefer etabs to staad when it comes to RCC concrete design, because etabs produces more economical elements

I noticed that on staad foundation, the minimum dimensions for a column footing is 1m by 1m whereas RCDC could go as low as 700mm.

I also found the result of staad foundation to be different from that generated by the batch design mode of staad using plates and when I modeled a beam slab raft foundation.

I wonder why the results are different. Any ideas?

Also my staad foundation recently started acting up, I'd appreciate a link for another if you have one.

If any part of what I talked about is unclear kindly let me know I would expantiate.

Regards

hakeem4:
https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/183532/we-have-issue-in-rcdc-beams

I have not had time to make a video, but I saw this useful link

let me know if it helps

Thanks for this, found it helpful

hakeem4:
check your mail

Good evening boss, just thought to remind you of the video about primary and secondary beams on RCDC.

BAZ001:
At this point you should have just begged or scope her a lil and let peace reign If ur video show internet dis season Uber no go like am and Internet never forgets

Nah, I feel differently. There's no need to beg when she's called him stupid. He already begged at the beginning. She wanted an ego massage and I'm glad she didn't get one if things actually happened as narrated.

If she posts the video, she has to post his full name fit it to stick. Also, if he's serious about having the video removed from the internet, it's doable.

n3xt:
You’re very useful to this thread!

Everything is not about selling. We need to understand what’s happening in other locations to better appreciate our brothers and sisters who are making a big difference in our dearly beloved country.

There are 30m plots here even 500m+ but the vast majority of land on this side start from 200k

Can you kindly share locations where lands from 200k can be gotten.

hakeem4:
ok, I would make video on that for you. But you can split the secondary beam over the primary. And in case rcdc has splited the primary. you can join members back.

just right click and you would see split brand

Thanks man, please if you can use a drawing while making the video for better understanding.

How does one identify the primary and secondary beam on RCDC?

hakeem4:
if you have any issues, try to post it here.

Alright, Thanks.

yungmin:
Use member UDL loading with the appropriate eccentricity

Thanks, I'll try that again. Tried it earlier and had some issues

hakeem4:
use a member load

That would act on the beam directly, how do I reproduce that 'cantilever-like' loading of the concrete fascia?

Which program do you use for your footing designs now, STAAD Foundation or RCDC?

How do I represent the load coming on the beam carrying the concrete fascia on STAAD?

Would appreciate if anyone can respond

Mechanics96:
1. The answer is the difference between the sum of even numbers and the sum of odd numbers(whichever is greater). Hence;
(5+5+7) -(2+10) = 17-12= 5. ☑️

2. Add vertically, the sum of each column is 14. So 14 - (2+4+4) = 4 ☑️

3. This one took my time... The sum of the preceding two terms minus 4 gives the next term. That's;
3+6 - 4 = 5
6+5 - 4 = 7
5+7 - 4 = 8... So,
11+15 - 4 = 22 ☑️

Thank you

Help anyone

Oliran:
I am sure the person ticked all what is required to get approval for you. However it is done in stages.
From your description I am guessing it's a bungalow, I'll list the stages below.

Stage 1:
Survey
Architectural drawings

The survey is charted to be sure your land is free of Government acquisition, your drawing is vetted and ensure comply with the required setback,airspaces etc.

Stage 2:
Someone from the district office will go for site visit to be sure of the size of land and confirm you've not started building if it is a proposed drawing.

Stage3:
Calculations are done using your architectural drawings to calculate assessment, the amount is depending on the size of the building (Length,Breadth and Height), the rate also depends on the location, Lekki fee is not same as Ikorodu fee. Each LGA is categorized into Low, Medium and High density.

Stage4:

After payment is done, the receipt for payment, deed of Assignment for the land, Affidavit with stamp duty and your passports with your drawings is used to open a file for you, a registration number will be issued.
The file is then forwarded to LIRS

Last Stage is the tax clearance stage.


I hope this helps.

What if one has started building?

GeneralMarshall:
See strange monikers want to hear about the fight... they never contribute to the thread,,, now for fight, them don dey the page for 30mins.

My man, nobody owes you anything, I can choose where to contribute and where not to.
Stop making a nuisance of yourself.

You think you know everyone that visits this thread?

Rest!

Wow!!

Men dey vex

This Is a lie, the person who made up the story just wants to draw traffic to his/her blog and to the hookup site.

A whois check reveals the site was just registered last month, there's no way Dorathy was on that website