Visit our design
center to see various colors and finishes.
PRECISION BLOCK UNITS
Orco precision block is a structural concrete masonry material that
conforms to the standards for hollow load bearing concrete masonry
units as published by the Concrete Masonry Association and exceeds
A.S.T.M. C-90-96 Standards and UBC Standard 21-4. All weight classifications
comply with the above standards. Note: Precision block are also
available in ultra light (85 lbs. Per cubic foot). See ultra light
section for details.
HI-STRESS PRECISION UNITS
Hi-stress precision masonry units are made in 3,750 net P.S.I..
Grey is the stocked color; other colors and higher strengths are
available upon request. Remember, there is a big difference between
a 3,000 net P.S.I block and f’m of 3,000 P.S.I. so when ordering
the P.S.I. of the block, be sure to select the correct value because
prices do vary. For example, a 3,750 net P.S.I. block is more expensive
than the standard units. For more specific information please call
your nearest office.
SPECIAL EFFECT BLOCK
These units include the 505, 503, and screen block. Limited supplies
are in stock. Grey is the stocked color; other colors are available.
Call for more specific information.
Every effort is made to insure color consistency by Orco Block,
however, it must be understood that we are using materials from
the earth and cannot control color variation in the cement and sand
which may change the block color slightly from run to run. We guarantee
the color only to range of color. We have a wide variety of colors
from which to make your selection. There may be an additional charge
for the color you select. Refer to the Price List for this information.
Orco Block recommends using matching mortar when using colored precision
block. Please call your architectural representative for additional
PRECISION BLOCK DIMENSIONS
Orco Precision Block come in 4”, 6” and 8” heights.
Common practice in describing masonry units is to give the width
first, the height second and the length last, followed by the descriptive
name. For example, an 8x8x16 Precision block is 8 inches wide, 8
inches high and 16 inches long. These sizes are in a modular dimension
and actual sizes are 3/8” less. All pertinent dimensions and
minimum shell thickness are shown. Rather than repeat dimensions
for each unit, the first block in each unit is dimensioned. The
dimensions apply to other units in the same group. Where there are
variations in the units, applicable dimensions are shown for the
The fence units shown here are for fences only. Note that the length
is 18” long. This gives you more wall for your money. For
example: a wall 100’ long and 6’ high would take 75
– 16”units for one course. 75x9 courses = 675 16”
units. If using an 18” long block it takes 67 units for one
course 100’ long. 67x9 courses = 603 18” units. The
difference between 675 and 603 is 72 units. The savings is revealed
not only in the block price but the installation labor cost. These
blocks should not be used in a building. They will not work out
to a module of 0” – 4 or 8” and your entire building
will be off at the doors and windows.
|BB = Bond Beam
||OE = Open End
||1S = 1 Side
|VS = Vertical Score
||DOE = Double Open End
||2S = 2 Side
For exact configurations & dimensions of cores please consult
your Architectural Representative.