Concrete Floor Flatness Measurements

The ff floor flatness measurement reads the bumps highs and lows in the slab and higher numbers are better.

Concrete floor flatness measurements. When explaining this to my customers i often use a pool table as an example. The more bumps there are the lower the ff number will be and the more difficult it will be for a polished concrete floor to have a uniform appearance. Floor flatness ff and floor levelness fl are measurements by which architects can hold concrete placement contractors accountable and provide a quality control level during the initial placement of concrete slabs. So when it comes to flooring trust only the best.

This saves lot of time of customer to start the operations on newly constructed floor. Think of these bumps and high areas like the knuckles on your hand. Our latest testing machines produces results of mandatory tests like soil ground compaction concrete air content concrete strength floor flatness and levelness results right away on job site. The specifications will also dictate when and where measurements should be taken this is often accomplished by referencing astm e1155 the standard test method for determining f f floor flatness and f l floor levelness numbers.

The higher the f number the flatter or more level the floor. Concrete floor slab flatness and levelness traditionally allowable tolerances of concrete floor slabs were determined by checking the slab surface with a 10 foot straightedge. Depending on where the measurement was made the slab may pass or fail the specified. Flatness is a measure of how bumpy the floor s finished surface is.

There is a difference between the two. Floor flatness levelnessone of the things that distinguishes a high tolerance floor is its f number requirement. This free concrete calculator estimates the amount of concrete necessary for a project and can account for different shapes and amounts of concrete. Exact flatness in concrete floors is critical to efficient facility functioning maximum floor tolerance maintaining operations and successful architectural design.

Explore other calculators related to housing or building as well as hundreds of other calculators addressing finance math fitness health and more. The fallacy of the straightedge method was the location of the measurement. F numbers were developed in the 1980s to provide a systematic quantitative way to indicate the flatness and levelness of a concrete floor. Common tolerances were 1 8 inch or 1 4 inch in 10 feet.

F number measurements are standardized under astm e 1155 standard test method for determining f f floor flatness and f l floor levelness numbers and the aci 302 1r 04 guide for concrete.