Installation Instructions

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Fox Blocks ICF Guidebook V5MAR17
28
BASIC CONCRETE
PLACEMENT
HEIGHT OF LIFT 5" (125MM) SLUMP
DISTANCE AHEAD
6" (150MM) SLUMP
DISTANCE AHEAD
1 1/2 Blocks (2' - 0") 2' - 4" 3' - 0"
2 Blocks (2' - 8") 3' - 0" 3' - 8"
2 1/2 Blocks (3' - 4") 3' - 8" 4' - 4"
3 Blocks (4' - 0") 4' - 6" 5' - 6"
IMPORTANT STEPS TO A SUCCESSFUL CONCRETE PLACEMENT
A) VOLUME AND MIX DESIGN AND SLUMP
CALCULATING VOLUME:
Fox Blocks are exactly 4", 6", 8", 10" or 12" in concrete width. Length x Height x Width to calculate
volume needed.
CHOOSING MIX-DESIGN:
Follow building code and/or Engineer Of Record specifications for your concrete mix design requirements.
Admixtures are not required but may help your concrete placement.
Concrete changes throughout North America due to different aggregate, sand, water quality and cement
brand being used. Admixtures that work good in one area may not work in another area. Fox Blocks
recommends you work closely with your local ready mix supplier for a mix design that will work on
your project.
1) Fly ash replacement of cement content up to 30% works well in Fox Blocks walls to improve
flow-ability and consolidation.
2) Mid-Range water reducers work well in Fox Blocks walls and will help in flow-ability and consolidation.
3) Gradated mix designs with optimum coarse, intermediate, and fine aggregate ratios can improve
flow-ability and consolidation within Fox Blocks walls.
PROPER SLUMP:
1) Slump should be as close to 5" to 6" (125mm to 150mm) as possible.
2) Exceeding this slump could cause wall to grow.
3) Less than recommended slump could create consolidation issues.
4) Slump can be roughly measured within the wall as you place the concrete. Use the chart below to know
how far ahead your concrete should flow from your placement position when using the desired slump.
This is only a rough guide and can change with concrete design and age.
How-To Section