Registers – Calculators – Bar
Reexamination Certificate
2005-03-03
2009-10-20
Frech, Karl D. (Department: 2887)
Registers
Calculators
Bar
C235S375000
Reexamination Certificate
active
07604159
ABSTRACT:
Method for converting a first type of concrete reinforcing material to an equivalent quantity of concrete reinforcing fibers for designing a reinforced concrete slab. Fibers may be steel or other materials. User determines whether a slab to be reinforced is a lightly reinforced slab; and then uses spacing theory to get a minimum fiber dosage for a given concrete slab thickness, if the slab is a lightly reinforced slab. User then uses an equivalent area of steel calculation to determine proper fiber dosage, if the minimum fiber dosage for a given concrete slab thickness is insufficient to give a residual strength factor greater than 30 percent. If minimum fiber dosage for a given concrete slab thickness suffices to give a residual strength factor greater than 30 percent, then user uses equivalent moment capacity calculation to determine a proper fiber dosage. Concrete design calculator may incorporate method and values.
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Novak Jeff
Rodencal Jeff
Frech Karl D.
NV Bekaert SA
Shlesinger & Arkwright & Garvey LLP
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