Rule of Thumb Figures | Columbus Builders Supply

Block

2-1/4 bags mortar per 100 block (40 block per bag)
800 lb. of sand per 100 block
1.25 block per sq. ft. of wall area
75% of length of wall gives umber of block per course
take height of wall (in feet) times 1.5 for number of courses
Stone

700 lb. of sand and 3 to 4 bags of mortar per ton

Brick

Approx. 7 bags of mortar per 1000 brick (143 brick per bag)
Approx. 1 ton sand per 1000 brick
figure brick 7 per sq. ft. of wall area (allows for waste)
1-1/2 brick per running foot on wall
4.625 courses of brick per foot of wall height
5 brick per sq. ft. for paving, hearths (laid flat- solid brick)
1 tie to every square foot

Manufactured Stone

Scratch Coat- 1 bag mortar and 200 lbs sand per 100 sq. ft.
Stick Stone- 1 bag mortar and 200 lbs sand per 100 sq. ft.
Grout Stone- 1/2 bag mortar and 100 lbs sand per 100 sq. ft.

Cement Plaster

1/4” thick (100 sq. ft.) 220 lbs. sand, .8 bag mortar
3/8” thick (100 sq. ft.) 330 lbs. sand, 1.2 bag mortar
1/2” thick (100 sq. ft.) 440 lbs. sand, 1.6 bag mortar

Concrete

Cubic Feet = length in feet x width in feet x depth in inches,
divided by 12
Cubic Yards = cubic feet divided by 27

Fire Clay

2 parts fire clay, 3 parts cement

Filling Block

cores with concrete
12” block- 1.64 cu. yd. per 100 block (Approx.)
8” block- .93 cu. yd. per 100 block (Approx.)

Mortar

mix 1 part mortar to 2-1/4 to 3 parts sand

Sand-Gravel

Approx. 3000 lb. per cu. yd. (no. yards times 1.5 for tons)
Approx. 110 lb. per cu. ft. (27 cu. ft. in cu. yd.)

Wall Ties

1 per every 10 brick (100 wall ties per 1,000 brick)