Question

146 : The maximum effective reinforcement ratio of a
bonded pre-stressed concrete beam at failure
according to IS:1343 is limited to a value of
2937352686
0.7
0.1
0.2
0.4​

Answer 1

Answer:

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Answer 2

Concept:

The maximum effective reinforcement ratio of a bonded pre-stressed concrete beam at failure according to IS:1343 is based on effective concrete tension area which is given by

$p_{p},eff=\frac{A_{ps}*f_{pu} }{bdf_{ck} }$

Here,

$A_{ps}$ = area of pretensioning tendons in the tension zone

$f_{pu}$ = characteristic tensile strength of tendons

$d$ = effective depth to the centroid of the steel area

$b$ = width of the section

Explanation:

• The maximum value of effective reinforcement ratio of bonded pre-stressed concrete beam according to IS:1343 is equal to

$p_{max},eff=0.40$

Hence the maximum effective reinforcement ratio of bonded pre-stressed concrete beam is $0.40$

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