Visit our design center to see various colors.

SPECIAL NOTES

SLUMPED BLOCK UNIT
Orco slumped block is a structural concrete masonry that conforms to 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.

SLUMPED ONE SIDE UNITS
Due to manufacturing procedure of the slumped one side units, the smooth side dimension will be approximately ½ inch shorter in length than the slumped side length. Slumped one side units are in fact more smooth on one side than on the other. When the slumped one side units are considered in connection with a precision block, please request a sample of both types of block as the finishes do differ. Slumped block may not have the same texture from run to run or block to block, and is not intended to resemble a precision block in texture or dimensional stability. The slumped block has a much denser finish than the precision block, therefore you have two different textures.

POR-CAP UNITS
These units have been designed to be used in areas in which you prefer not to use a 2” cap unit. The por-cap unit has the cells filled to an approximate depth of 1” at the time of manufacture so you have a built-in cap. The por-cap unit is placed on the wall after all the cells in the wall that need to be grouted are grouted.

SLUMPED TEXTURE
We tried to reproduce the real adobe that is so much a part of California heritage, hence we try to achieve a gentle roll to our slumped block. The standard slumped texture is on all four sides of the unit. The 4” high slumped block has a different texture than the 6” high unit. The reason is due to the process of manufacturing. Please call us for samples before selecting the block. Each slumped block will no have the exact texture from block and run to run and is not intended to resemble a precision block.

COLOR
Every effort is made to insure color consistency by Orco Block, however, it must be understood that we are using material from the earth and we cannot control the color variation in the cement and sand which will change the color slightly from run to run. We guarantee the color only to range of color. For larger projects, we recommend that you have your block manufactured in “one run”. This will help to control the color range. We have a 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 a colored slumped block. Please call your architectural representative for additional information.

HI-STRESS SLUMPED BLOCK
Hi-stress slumped block is not kept in stock. It is a special order that is made upon request for a nominal charge. Remember, there is a big difference between a 3,000 lb. net P.S.I. block an f’m of 3,000 lb. When ordering the net P.S.I. of the block be sure to select the correct block value, because the prices do vary. For example, a 3,000 net P.S.I. block costs more than a 2,000 net P.S.I. block.

SLUMPED BLOCK DIMENSIONS
Slumped block is available in four inch and six inch heights only. Common practice in describing masonry units is to give the width first, the height second and the length last, followed by a descriptive name. For example, an 8x4x16 slumped block is approximately 7 ½” x 3 ½” x 15 ½”. Please note these sizes are a block modular dimension for height and length. Width of the slumped block unit may vary 1” or more for texture. Use a ½” mortar joint for all slumped block. All pertinent dimensions and minimum shell thickness are shown. Rather than repeat dimensions for each unit, the slumped block in each group is dimensioned and these dimensions apply to other units in the same group. Where there are variations in the units, applicable dimensions are shown for the individual unit.

SLUMPED BLOCK OPEN END UNITS
These units are available in 4” and 6” high. Units available as a slumped block open end and also available upon request as a slumped one-side unit. A minimum inventory is carried. Contact your nearest office for availability.

FENCE UNITS (Comparing 6x6x16 versus 6x6x18 units)
The fence units shown here are for fences only. Note the length is 16” long. This gives you more wall for the money. For example: A wall 100’ long and 6’ high would take 75 16” units for one course. 75 x 12 courses = 900 – 16” units for 100’.

For an 18” long block it takes 67 block to equal 100’. 67x12 courses = 804. The difference between 900 and 804 is 96 units. The savings is revealed not only in the block price but the installation labor cost. These blocks should not be used in building. They will not work out to a module of 0”- 4” or 8” and your building will be off at the doors and windows.

LEGEND
SOS = Slump One Side