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# How to calculate bolt load from AMSE BPVC. VIII. 16

## How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
Can someone help with an example of how to calculate required bolt load using AMSE BPVC. VIII. 1
I have tried it but it seem confusing

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

Refer MANDATORY APPENDIX 2 of ASME SEC VIII DIV 1

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

Perhaps you could explain how you have come to be confused.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

Are you referring to the bolt load used for calculations, or the one that you will use in actual operation?

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
i have a 1" ASTM 193 B8M Bolt to be used on a 26" vessel nozzle using spiral wound gasket. i want to calculate the correct torque value. if i have the correct bolt load, i can use T=KFD to get the right torque value... i want to calculate the required bolt load

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

See ASME PCC-1, Appendix O.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
I still need help to calculate the required torque value of the following

Bolt size: 2"
Bolt material: A193 B8 Class 2

Can someone help with the steps from beginning to the end?

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

have u calculated bolt load ?
if yes, use formula of torque.
T = KFD
K = 0.2 F IS LOAD PER BOLT D is minor dia.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
My main problem is calculating the bolt load. Can you please put me through on calculating the required bolt load?

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
Please can someone assist with how to calculate either bolt stress required or bolt load

I still need help to calculate the required torque value of the following

Bolt size: 2"
Bolt material: A193 B8 Class 2

Can someone help with the steps from beginning to the end?

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

2
Try this....to start.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

Asked and answered. See ASME PCC-1, Appendix O. Beyond that, you need to get your employer to assist you with that. We don't do free hand-holding on eng-tips.com.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

This isn't a comprehensive how-to instructions forum.
It is for giving a receiving tips to help you get past a tricky problem.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

#### Quote (212197)

K = 0.2 F IS LOAD PER BOLT D is minor dia.

D should be the nominal diameter.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

What is the definition of "F" in the cited provision? I know F is a load to calculate torque here, then what end result is expected from stretching the bolt - close gap, pre-load the bolt, or produce clamping force for shear? Sorry, I am not a ME, nor familiar with AMSE (ASME?) provisions, so the question could sound stupid.

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

(OP)
Gentlemen.

Kindly help confirm if this is correct.

Stress = Force/Area
Force = Stress X Area

Stress = Bolt Yield = 105000 Psi (For A320 L7 from ASME B31.3)
Force = Bolt Load = ?
Area = Tensile Stress Area = 0.6057 sq.in (For 1” bolt from ASME PCC-1)

Force (Bolt Load) = 105000 X 0.6057
= 63598.5 lb

Kindly confirm if this can be used to calculate bolt load before using T=KFD to calculate the torque value

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

Why would you use a bolt stress of yield? Have you gone through ASME PCC-1, Appendix O?

### RE: How to calculate bolt load from AMSE BPVC. VIII. 1

F can be any magnitude, but only one is meaningful for your application. What is your application - close gap, pre-tension....?

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