number of bolts per end

[releets]

i'm an erector with just enough smarts to know that a W24x68x9'3 long requires more than 6 - 3/4 bolts each end. but i need to know my formula is correct. went to school to be a P.E but quit to play pro baseball. yes i'm stupid. can anyone help me?

 

[JAE]

Is that 9'-3" or 93'-0"?

For the 9' beam it may be that the depth and size are not really required and thus, the number of bolts can be less....but for a 93' long beam...the 24" depth seems a bit tad low....

 

[releets]

the beam length is 9'3". it is a W24x68. this beam is supporting hollow core plank. the columns are hss8x8x3/8x12'-8". my calcs show, this beam section at this length should have 11.91 bolts per end. again, i think i know more than i may. the details show shear tabs on the columns with 6 bolts per end. these bolts are 3/4 a325. not t.c bolts. thank you for your cooperation this evening.

 

[UcfSE]

It looks like you're making an assumption about the loading to arrive at 11.91 bolts. How did you figure the load? You may have made an assumption the engineer didn't make.

 

[JAE]

I think releets is using the maximum possible safe load on the beam to get an end reaction. The number of bolts in a connection CAN be based on the max. beam capacity, but many times is not.

 

[csd72]

releets,

I would just highlight this to the engineer of record and leave it at that.

You may be right, but it could also only require 6 bolts as noted above.

csd

 

[jike]

As a minimum, your clip angle length should not be less than T/2 for rotational stability. Actual load may require more bolts. Cloud it and let the EOR tell you how many bolts are needed.