Grade Back Pressures Flashcards
1
Q
2% Grade
A
1 psi
2
Q
5% Grade
A
2 psi
3
Q
10% Grade
A
4 psi
4
Q
12.5% Grade
A
5 psi
5
Q
15% Grade
A
6 psi
6
Q
20% Grade
A
9 psi
7
Q
25% Grade
A
11 psi
8
Q
30% Grade
A
13 psi
9
Q
34% Grade
A
15 psi
10
Q
40% Grade
A
17 psi
11
Q
45% Grade
A
19 psi
12
Q
50% Grade
A
22 psi
13
Q
Unknown Grade = 10%
A
4 psi
