what is the basic difference between a singly reinforce
section & a doubly reinforce section?
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Answer Posted / b.murali krishan
Singly reinforced section the reinforcement is provided to
care tension in the bottom of beam further singly reinforced
members or beam are classified as underreinforced
section,balaced section and overreinforced section.If the
moment of resistance of the section is equal to the bending
moment than it a balaced section,moment of resistance of the
section is more than that of bending moment than it a
overreinforced section and If the moment of resistance of
the section is less then the bending moment than it a
underreinforced section.Doubly reinforced section is to be
designed to restrict the depth of beam(section) in case of
head room condition or if the bending moment is more than
25% of moment of resistance of the section doubly reinforced
section is to designed. in doubly reinforced beam or section
the reinforcement is to be provided both in compression and
tension zones.
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