Penn Foster Sheet Metal drawing project

[SLW210]

On 11/15/2019 at 8:50 PM, gogrey34 said:

If I used the equation for BD that they gave, I get a negative number. -0.2483?

I found a different equation after some google searching that has it as

BD=2*(tan(A/2)*(R+T)-BA

I got 0.2867 for the BA and 0.4133 for BD using the equation above. 
I didn’t see the BD equation in any of my searching. 

 

10 hours ago, banyameen said:

the bend deduction is 0.0633 inches is not right and i founded is .413

 

Yes, that has already been mentioned.

[oddssatisfy]

On 11/13/2019 at 9:33 PM, gogrey34 said:

Hi CADTutor folks! It appears PF has changed the drawing project in the HVAC section after searching for some topics. The project is to draw a multiview drawing and flat pattern for a bracket made out of sheet metal. I'm getting tripped up on the flat pattern when it comes to calculating the bend deduction with the formula they give (pg 12 in attached pdf). Right after the formulas for bend allowance and deduction, they say "you should find that the bend deduction is 0.0633" and the bend allowance is 0.2867". I had no issue getting the same bend allowance number, but I'm not getting what they said for the bend deduction. Pg 6 lists K-factor(K)=0.33, bend radius(R)=0.1", thickness(T)=0.25", and says all bends will be 90°(A).

 

I've found a considerable amount of typos in the course up to this point, so it really wouldn't surprise me if there was a typo in these instructions as well. I have an email submitted to PF asking for clarification, but I figured I might get a quicker answer on here.  

 

So for those of you who enjoy a good math problem, can you get the bend deduction they have of 0.0633? I even busted out my trusty old TI-86 graphing calculator to figure it out. I've been out of school for way longer than I care to admit to myself, so it's definitely possible that my advanced math skills are bit rusty Sheet Metal Parts. Any insight would be appreciated!

 

Thanks!

Amy

 

 

7. HVAC and Electrical Schematic Drafting - Lesson 2.pdf 405.15 kB · 42 downloads

I am trying to work on my Structural Drafting Project for AutoCAD. I am very visual and i need to draft plate 1 the foundation plan. It's been awhile since I've been on the forum, and I cannot seem to find the thread that talked about this project. If someone could please direct  me in the right direction. I would be so grateful. I am trying to get it started and am having a bit of difficulty understanding how it is supposed to look.

Edited January 12 by oddssatisfy

[ReMark]

I may be of some assistance.  You posted in the correct subforum (Student Project Questions) but you posted under a thread about the P-F Sheet Metal Project.  Stay in this subforum and use the Search function in the upper right-hand corner.  Search on the word STRUCTURAL then view the results.  You should find what you are looking for.