ACI 435.4R : 72(R1989)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
VARIABILITY OF DEFLECTIONS OF SIMPLE SUPPORTED REINFORCED CONCRETE BEAMS
07-23-2013
01-12-2013
The variability of actual deflection of simply supported reinforced concrete beams with respect to deflection calculated by accepted methods is discussed. The probability of the deflection of a particular beam falling within a given level of uncertainty is evaluated by analyzing existing data and fitting a probability distribution to the data. Using deflection criteria of ACI 318-71, there is approximately a 90 percent chance that deflections of a particular beam will be within the range of 20 percent less than to 30 percent more than the calculated value. This represents a slight improvement over ACI 318-63.
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