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Pakmix Inc.
618 223rd St. Suite #3
Des Moines, WA 98198-6241
Toll Free: (800) 272-5649
Fax: (206) 870-8838 |
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QUANTITY ESTIMATING CHARTS PAGE |
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Quantity Estimating Charts
To figure the number of bags of Concrete Mix required to pour a concrete SLAB, use the chart or formula below: |
Area in square feet |
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2 |
3 |
5 |
7 |
9 |
15 |
20 |
35 |
45 |
50 |
100 |
For 4" Slab |
80-lb Bags |
1 |
1-1/2 |
2-1/2 |
3-1/2 |
4-1/2 |
7-1/2 |
10 |
17-1/2 |
22-1/2 |
25 |
50 |
For 4" Slab |
60-lb Bags |
1-1/3 |
2 |
3-1/3 |
4-2/3 |
6 |
10 |
13-1/3 |
23-1/3 |
30 |
33-1/3 |
66-2/3 |
For 6" Slab |
80-lb Bags |
1-1/2 |
2-1/4 |
3-3/4 |
5-1/4 |
6-3/4 |
11-1/4 |
15 |
26-1/4 |
33-3/4 |
37-1/2 |
75 |
For 6" Slab |
60-lb Bags |
2 |
3 |
5 |
7 |
9 |
15 |
20 |
35 |
45 |
50 |
100 |
| Another way to calculate how many bags are needed for an area is to multiply length x width x depth of the pour, then divide by 8 (for 80-lb. bag or divide by 6 (for 60-lb. bag) = # of bags needed. |
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TUBE form coverage's: |
Tube Diameter |
12" |
10" |
8" |
6" |
Pounds of mix per foot required |
85 |
70 |
55 |
40 |
To figure the number of bags of MORTAR MIX needed to lay 8" x 16" x 8" BLOCKS with 3/8" joint, use the chart below: |
Number of BLOCKS |
20 |
27 |
40 |
80 |
100 |
200 |
300 |
400 |
500 |
750 |
1000 |
80-lb Bags |
3/4 |
1 |
1-1/2 |
3 |
3-3/4 |
7-1/2 |
11-1/4 |
15 |
18-3/4 |
28-1/4 |
37-1/2 |
60-lb Bags |
1 |
1-1/3 |
2 |
4 |
5 |
10 |
15 |
20 |
25 |
37-1/2 |
50 |
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To figure the number of bags of MORTAR MIX needed to lay 8" x 2" x 4" BRICKS with 3/8 joint, use the chart below: |
Number of BRICKS |
50 |
65 |
100 |
150 |
200 |
250 |
300 |
400 |
500 |
750 |
1000 |
80-lb Bags |
3/4 |
1 |
1-1/2 |
2-1/4 |
3 |
3-3/4 |
4-1/2 |
6 |
7-1/2 |
11-1/4 |
15 |
60-lb bags |
1 |
1-1/3 |
2 |
3 |
4 |
5 |
6 |
8 |
10 |
15 |
20 |
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