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Dear Channel Admin, Thanks for your Resourceful Tutorial. I am requesting you to Upload a tutorial on Corner Column Footing design using Safe. Thanks again for your informative and helpful Tutorial.

Do you have the Excel sheet for calculating the r/f for column strip and middle strips?( By considering the detailing preferences too like concentration of 2/3 of As for middle half of the column strips)

Why you don't check shear reinforcement in strip based design basis?

is bar placed perpendicular to strips A ... during calculation of m2/m area for A Strip

also I have designed GF, FF & second-floor slabs in 3 diff. files of SAFE(.fdb) how can I bring all reactions In one file to design a RAFT foundation

Hi, Good day! I am also designing mat foundations, and I'm getting 48.96mm settlement due to DL + LL + EQ (linear add - service normal). The allowable settlement for mat foundation is 50mm. It is only almost 1mm difference. Should I add piles on my mat foundation. Thank you in advance. God bless.

Sir, When my reactions are already in a SAFE format how can I begin now the design for a RAFT foundation. If you can help me posting a video on it, will be thankful to you jazakallah khair​

KINDLY EXPALIN HOW TO CHECK THE SHEAR STRENGTH OF THE RAFT

how to model sloped footing with varied thickness in safe

Very low volume cannot hear properly please reload the video with proper volume

Thanks for the lecture. Why using stiff column in designing of mat footing?

@civilmdc

8 ай бұрын

To get punching shear

👍🏻

When I export base from etabs model, the reactions are also imported in safe. When basement retaining wall is present there, it is also imported. When I check punching shear, software shows N/C at columns where retaining wall is present. Kindly explain what I should do. Should I ignore the columns punching shear where wall is present? Or should I remove the wall and only export columns based reactions in safe? Same case when Lift or shear wall is also present?

@civilmdc

3 жыл бұрын

If the wall attached... to any beam.... Software will not show punching shear check. No need to remove walls...... it is the part of foundation You can check ... Manually there...

sir how can we provide shear link for mat foundation in safe

sir how to find reinforcements of mat footing manually for particular area ... plz sir i have been in trouble for many days ...sir it will be very helpfull if you can make video for same. pls sir

Sir if i am designing mat foundation by importing .f2k file from etab, do i need to ad any extra load combination?? Or can i just set a load combination of DL+LL and perform every check for this load case only??

@civilmdc

4 жыл бұрын

For Allowable bearing capacity and settlement... You will service load combination... For example. 1D+1L.... etc. For designing of reinforcement and punching shear.... You have to define... Ultimate load combination.... For example... 1.2D+1.6L

@deepvishwokarma4121

4 жыл бұрын

@@civilmdc thank you sir. it helped a lot

@civilmdc

4 жыл бұрын

@@deepvishwokarma4121 welcome

while checking the bearing capacity of soil, ranges between -28KN/m2 to -80 KN/m2, is that mean a Tension arises in Soil???? in it is, What may be option for tension design?

@surajgurung5856

4 жыл бұрын

Allowable Bearing Capacity = 100 KN/m2

sir what should we do when provided reinforcement is 300 % more than require? can we provide require reinforcement?

@civilmdc

4 жыл бұрын

Yes.. We can smaller diameter bars... And cutoff lengths

Thank you for video, How do you define strip width?

@civilmdc

4 жыл бұрын

You can select the default value.... or you can input your own value.... Like for Column Strip you put the strip width as Ln/4 from side of slab and Ln/4 from other side of slab........ and the remaining width will be for Middle Strip. .... For more details , please read this... theconstructor.org/structural-engg/two-way-slab-design-direct-design-method-aci-318/14444/ If you still face any issue, please feel free to contact.

@shrishailsambanni7139

4 жыл бұрын

How do you define for irregular geometry?

@civilmdc

4 жыл бұрын

@@shrishailsambanni7139 by using draw strip command... From draw menu

I have designed slab in SAFE so my reactions are already in SAFE format how can I design the MAT foundation when the reactions are already in safe format, please help me

@civilmdc

4 жыл бұрын

When you bring Slab or support reactions in safe.... They both designed separately in two different files of SAFE

@syedshahbazuddin4245

4 жыл бұрын

Sir, When my reactions are already in a SAFE format how can I begin now the design for a RAFT foundation. If you can help me posting a video on it, will be thankful to you jazakallah khair​

@syedshahbazuddin4245

4 жыл бұрын

also I have designed GF, FF & second-floor slabs in 3 diff. files of SAFE(.fdb) how can I bring all reactions In one file to design a RAFT foundation

sir when u define soil subgrade properties then you just divide allowable soil bearing capacity with permissible settlement but some designers also multiplying 3 FOS. sir please explain

@civilmdc

2 жыл бұрын

Here is the full course link on CSI SAFE kzread.info/head/PL0h14oMuZXQ6l-O7aqF0hYsZbyJ7eFt1H Listen the lecture on soil subgrade modules

@engrkhalildawar4056

2 жыл бұрын

@@civilmdc Thanks Sir for you quick responce

When i run analysis and design. it doesn't show any result. Any tips?

@civilmdc

3 жыл бұрын

Change graphics mode..

Uniform subgrade modulus? Really?

And check for one way shear?

@civilmdc

4 жыл бұрын

Yes, the software does check one-way shear in two-way slabs/ foundations. This check is based on design strips, and follows a procedure similar to that for beam shear design.

SAFE is not showing punching shear ratio in shear wall region. How to overcome this?

@civilmdc

3 жыл бұрын

If it is connected with beam... Then it will not show...

@tanjirahmed4382

3 жыл бұрын

@@civilmdc I tried by ommiting beam in safe but failed. It will be very helpful if you upload your work. Thanks in advance.

@civilmdc

3 жыл бұрын

@@tanjirahmed4382 dear.... When beam is connected with wall... SAFE will not give you... Punching shear value..

How to extend design strips

@civilmdc

Жыл бұрын

Click the strip and extend it

How to check differential settelement in raft or isolated footing?

@civilmdc

2 жыл бұрын

Check manually deflection at different locations

@md.bayzeedhossain2923

2 жыл бұрын

@@civilmdc i am not clear about this think...please make video on this differential settlement.if you make video this is very helpful for us.specially for me...

Alslam alikom.. What happen if we didn't make stiff.. We can assign point load & put area of punch..?

@civilmdc

4 жыл бұрын

W. Salam. Basically we calculate the moment in the footing at the edge of column..... In the footing. If we do not assign stiff then software will give moment at center.... Which is not our requirement.

@omaressam819

4 жыл бұрын

@@civilmdc well.. If we have many depths in the footing.. We must make stiff for different depths? Or the depth we put is not important?

@civilmdc

4 жыл бұрын

@@omaressam819 Every depth of footing is important.. Stiff column is not used for that purpose

@omaressam819

4 жыл бұрын

@@civilmdc thank you.. Please.. If I have column with angle.. How I can draw it..

@civilmdc

4 жыл бұрын

@@omaressam819 using DRAW AROUND POINT tab..... add column dimensions in it.

Hi sir/ I am civil engineer , I need to help to , I have high building 15 stories , It has two different stepped raft foundations ( 5m high between them , I don't no what to do , can you help me please ? If you have email I will send in email .

Please,can u make one Video for irregular column spacing and loading??

@civilmdc

4 жыл бұрын

Dear, Only grid will change, Rest will be same.

@rumonsiddique5017

4 жыл бұрын

For deformation check, which combination used? service or ultimate?

@civilmdc

4 жыл бұрын

@@rumonsiddique5017 Service Here is the full course link See the last video kzread.info/head/PL0h14oMuZXQ6l-O7aqF0hYsZbyJ7eFt1H

@rumonsiddique5017

4 жыл бұрын

i have seen your another lecture on comparison of two methods for determining soil sub grade modulus. if i am correct then , i found you using allowable bearing capacity here in this video . On the other explanation video , you used ultimate bearing capacity qu ! can you check please

@rumonsiddique5017

4 жыл бұрын

Another supplementary question, is this mandatory to check soil contact pressure wrt the allowable bearing capacity in finite element analysis , where you are using a completely different soil parameter ks. As the contact pressure are localized in some particular region, it is expected to exceed the soil pressure on those area! may be i am asking silly questions but i need to be clear regards

Hi sir/ I am civil engineer , I need to help to , I have high building 15 stories , It has two different stepped raft foundations ( 5m high between them , I don't no what to do , can you help me please ? If you have email I will send in email .