|
|
 |
|
Steps to
Estimating
| Manual
Estimating Method: |
| How to Estimate Your
Project |
Follow the instructions below to estimate how
many BuildBlock forms you'll need for your
construction project.
-
Divide wall height by 16” and round up. This is
the
number of courses
required.
-
Multiply the # of 90° corners in the structure
by the # of courses required. This is the
number of 90° corner forms
required.
-
Multiply the # of 45°
corners in the structure by the # of courses
required. This is the
number of 45° corner forms
required.
-
Use the chart below to determine the
total square footage
of all
90° forms
to be used. (Number of 90° forms multiplied by
sq. ft. per form.) Do the same for the
45° forms.
-
Determine the
total square foot area of wall
being formed (width x height, minus 80% of
window and door openings). Subtract total square
foot of all 90°
forms to be used and all 45°
forms to be used.
-
Divide the remaining square footage of the wall
by 5.33 to determine the
number of straight forms required.
Add a small number of forms for possible waste.
-
Estimate the
concrete volume
required by the following: Divide total square
footage of wall to be formed, including corners,
by 53 or 40 (for 6” or 8” forms, respectively).
This equals the
number of cubic yards of concrete
required. Add 1.5 additional yardage for waste
and the pump. (You do not want to be short on
concrete. Delays are too expensive on manpower
and pump costs.)
|
|
Square Foot per Block Chart |
| |
6" concrete |
8" concrete |
|
Straight block |
5.33 |
5.33 |
| 90°
Corner block |
6.00 |
6.44 |
| 45°
Corner block |
4.89 |
4.89 |
|
| |
|
|
