Lecture 7: Worked out Examples on Design of Ordinary Black Bolts

[@piyushtiwari7954]

strength of solid plate is governed by yielding not by rupture

[@vigneshk3192]

In Books(N.Subramanian & S.K Duugal) also they used Rupture Formula For Finding Efficiency.

[@mamathal6319]

sir pitch is p= 40mm

[@nikhilkumar9576]

The no of bolts required is 6 (@14.50) ,so it means 6 on each side in a butt joint, then why is he providing only 3 on each side (@16.45)?

[@vishalbarwal6659]

yes, you are right. total 12 and 8 bolts will be provided in question 1 part b and c respectively.

[@kkb3091]

@@vishalbarwal6659 brother, why we need 8 bolts in part (c)? Shouldn't 6 bolts be sufficient? 3 on each plate?

[@patelvastralaya]

thankyou sir as good lecture on diff type of striength due to varrious ocuurrence

[@French24_7]

English hum sharminda hai...tere qatil zinda hai...

[@sameergazali-kb6wq]

22:15 .. in sub question b) for Vdpb sir you took t =8mm which is of cover plate but for sub question c) for Vdpb you took t=10mm and why not 8mm bcz in question cober plate is of 8mm

[@piyushtiwari7954]

cover plate aur main plate ke beech mein 6 bolts lagenge na ki 3 jaisa in mahashay ne bataya hai completely unexpected how can the level of iit kgp be so low ,cant understand

[@Masibul_1]

yes it will be 6 no.of bolts as per my knowledge

[@apurvbasu4571]

strength of joint along 3-3 203 kese aya?

[@Mukarram.J]

Bolt values calculations aren't clearly explained 32:00 mins , Without clear explanation skipped. Not proper Explanation..

[@arunbharti4123]

sir in second question how the value comes 203 at section 3-3

[@Sumitkumarcy]

I think efficiency should be calculated here with respect to yielding of gross section rather than rupture.....

[@vigneshk3192]

In Books(N.Subramanian & S.K Duggal) also they used Rupture Formula For Finding Efficiency.

[@palashjain5318]

While designing Single Cover butt joint, instructor didn't account Reduction factor for packing plate in determining Design Shear Capacity of Bolt.

[@Sanjaykumar-nz4tf]

Because it is not necessary.... We don't want to use packing plate there.....

[@devbasant1150]

Why fu value is 400? Because of steel?

[@sameergazali-kb6wq]

Fu should be 410 na?

[@kolaharishkumarpatel5091]

Sir how 203 at section 3-3

[@spandanareddy.p]

how is the strenght of joint... 0.9fu... where is the formula?

[@AmitKumar-wl8ok]

See page 32 of is 800:2007

[@vishalbarwal6659]

clause 6.3.1 of IS 800:2007

[@bangaribhavana8423]

@@AmitKumar-wl8ok tq

[@dreams1537]

sir why we take min bolt value?

[@Sanjaykumar-nz4tf]

At minimum bolt value only bolt starts to fail.... If bolt value is higher there is no chance for failure....

[@garima.raj1]

why only shear strength and bearing strength were calculated in eg 1

[@HayatTeleHealth]

because only shear strength and bearing strength were asked ?

[@siddhantsagar5527]

pitch = 2.5d = 2.5*16 =40mm not 50 mm.

[@sunnykxv1]

40 is the minimum value of pitch required.so we can take higher value

[@deveshupadhyay722]

We take the hole diameter

[@vishalbarwal6659]

According to clause 10.2.2 of IS 800:2007 minimum pitch= 2.5 d, where d is the nominal diameter of the bolt.

[@siddhantsagar5527]

@@vishalbarwal6659 🍆🤾🏾

[@amanbanerjee1025]

Correct the 1st math... Check the gross dia

[@kartikkaushik3837]

ye 150 kha se aagya..

[@amanbanerjee1025]

1st of all, sir you r very poor in spoken English... Try to avoid "kok kok"...

[@subhrabakshi4539]

Please be respectful to a teacher, who is spending his precious time voluntarily solely for the benefit of us, the students.