• 04-30-2018, 06:57 PM
peterbotros91

[B]C3. [/B]Using the fixed fastener formula calculate the true position tolerance for the two patterns shown below. (Show your work).

C3.1. The size of the bolts are (diameter) 0.492 – 0.500 and the size of the clearance holes are (diameter) 0.520 – 0.536.
[IMG]file:///C:/Users/PETERB~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png[/IMG]
C3.2 The size of the bolts are (diameter) 0.245 – 0.250 and the size of the clearance holes are (diameter) 0.2656 – 0.270.

C3.3 Use the floating fastener formula and calculate the true position tolerance for the above 4 hole pattern, given the size of the bolts are (diameter) 0.492 – 0.500 and the size of the clearance holes are (diameter) 0.520 – 0.536.
[IMG]file:///C:/Users/PETERB~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png[/IMG]
C3.4 Using the floating fastener formula calculate the plus/minus tolerance for the holes shown above if the bolts are 0.370 – 0.375 and the clearance holes are 0.386 – 0.397.

C3.5 Repeat the above calculation using the fixed fastener formula.
• 04-30-2018, 07:08 PM
Kelly Bramble
From who's book/material is this?

[B]C3. [/B]Using the fixed fastener formula calculate the true position tolerance for the two patterns shown below. (Show your work).

C3.1. The size of the bolts are (diameter) 0.492 – 0.500 and the size of the clearance holes are (diameter) 0.520 – 0.536.
[IMG]file:///C:/Users/PETERB~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png[/IMG]
C3.2 The size of the bolts are (diameter) 0.245 – 0.250 and the size of the clearance holes are (diameter) 0.2656 – 0.270.

C3.3 Use the floating fastener formula and calculate the true position tolerance for the above 4 hole pattern, given the size of the bolts are (diameter) 0.492 – 0.500 and the size of the clearance holes are (diameter) 0.520 – 0.536.
[IMG]file:///C:/Users/PETERB~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png[/IMG]
C3.4 Using the floating fastener formula calculate the plus/minus tolerance for the holes shown above if the bolts are 0.370 – 0.375 and the clearance holes are 0.386 – 0.397.

C3.5 Repeat the above calculation using the fixed fastener formula.[/QUOTE]
• 04-30-2018, 07:10 PM
peterbotros91
It's from a past Professional Engineers of Ontrio exam
• 04-30-2018, 07:19 PM
Kelly Bramble
Ontrio?

[url]http://www.peo.on.ca/index.php?ci_id=2060&la_id=1#News[/url]

I'm a little confused, when did any PE test include tolerance analysis such as Fixed Fastener Condition?

To what dimensioning and tolerancing standard?
• 04-30-2018, 07:29 PM
peterbotros91
these are technical exams
• 04-30-2018, 08:10 PM
Kelly Bramble
I’m going to pass on providing a detailed (show my work) answer. If you’re seeking a PE in any place of the world you should know the basic equation and the required algebra to get the answers.

Quite honesty the question looks like it comes from a competitor of Engineers Edge GD&T training resources and we don’t support school work or competitor’s material.