Math2. Two Formula.

Question 0

2. Rule of thumb of convergen friction to the lowest therms?

Answer 0

If nominator and denominator are even, you can bring them to the lowest therms.

Question 1

1. How shall you organize work on scrub paper?

Answer 1

Circle your answer on scrub paper.

Question 2

3. How shall you wright addition of fraction?

Answer 2

4 3/8”
+6 5/8”
———-
10 8/8 = 11”.

Question 3

4. What shall you find first to add fractions?

Answer 3

Common denominator.

Question 4

5. Substruction:
       7/8
      -3/4 
      ------
          ?

Answer 4

7/8 = 7/9
-3/4 = 6/8
————
1/8.

Question 5

6. Formula for travel, offset and advance?

Answer 5

T = 1.414 x (O or A),

O or A = .707 x T.

Question 6

7. Formula for rice?

Answer 6

R = .414xS, where R - rice,

S - spred.

Question 7

8. Formula for total fall?

Answer 7

TF
———– TF = GxD.
G. |. D

Question 8

9. Units of measurement for total fall formular?

Answer 8

TF - inches.
D (distance) - feet.
G (grade) - inches per foot.

Question 9

10. How shall you round numbers for areas and bolumes?

Answer 9

1. Area to 4 decimal points.

2. Volume to 6 decimal points.

Question 10

11. How many 1” pipe you need to fill up 2” pipe?

Answer 10

4.

Question 11

12. Take offs of drainage top Tee?

Answer 11

1. From the center line of thread to the top of Tee.
2. From the center line of thread to bottom of Tee.
3. From the vertical center line of Tee to the beginning of the thread.

Question 12

13. Formulas for offset make by 22 1/2* ells or 1/16 bends?

Answer 12

T = O x 2.613 or T = A x 1.082,
O = A x 0.414, 
A = O x 2.414,
E = S x 0.198.

Question 13

14. Formulas for offset make by 60* ells or 1/4 bends?

Answer 13

T = O x 1.155 or T = A x 2,
O = A x 1.732,
A = O x 0.577,
E = S x 0.577.