Offset homework and quiz

complete the following assignment.  questions 1-8 counts as one shop homework grade.  questions 9-14 counts as a second shop homework grade.  questions 15-20 count as a shop quiz grade. this assignment is due Friday February 27, 2015.

Use the following formula to calculate offset location:

       “A”=D-[(H x M1) + C]    Given:  ½” EMT   Angle =30 degrees  D= 24”  H=8” 

    M1=1.00  C= 5”

1.  Mark A=  ____________     2.   Mark B=  _____________

Given:   ¾” EMT      Angle= 45 degrees   D= 39 ½”  H= 4”   M1= 1.73   C= 5 ½”

3.   Mark A= ____________     4.   Mark B= ______________

Given:  ½”  EMT   Angle= 45 degrees D=26”   H= 10”  M1=1.73   C= 5”

5        Mark A = ______________  6.  Mark B = ______________

Given:  ¾”  EMT   Angle 30 degrees     D= 31 “  H=7”  M1-1.00  C=  5 ½”

7.  Mark A= _____________     8.  Mark B = ________________

Use the following formula to calculate offset location:

     B=D + ( H x Sv )    Given:   ½” EMT  Angle= 30 degrees H= 8” Sv= ¼”

9.  Mark B= _____________   10.  Mark A = _____________

Given:  1” EMT  Angle = 45 degrees   H = 4”  Sv= 3/8”

11.  Mark B=  _____________  12.  Mark A= ______________

Given:  ¾” EMT  Angle = 30 degrees  H=14”  Sv=1/4”

13.  Mark B= _____________       14.  Mark A = ______________

Calculate marks A2, A3 and B1 ( or B2 or B3 ) for the following parallel offset problems:

Adjustment= S x T    S = spacing  T = tangent for ½ of offset angle

Given:  1” EMT  Angle= 30 degrees  H= 4”  S= 4.163”  T= .2679

15.  Mark A2= ________   16.  Mark A3= __________  17.  Mark B1= _________

Given:   1” EMT  Angle= 30 degrees  H= 6”  S= 4.163”  T= .2679

18.  Mark A2= ________  19.  Mark A3= __________  20.  Mark B1= _________