A reinforced-concrete slab with effective depth of $80 \mathrm{~mm}$ is simply supported at two opposite ends on $230 \mathrm{~mm}$ thick masonry walls. The centre-to-centre distance between the walls is $3.3 \mathrm{~m}$. As per IS 456: 2000 , the effective span of the slab (in $\mathrm{m}$, up to two decimal places) is

A reinforced-concrete slab with effective depth of $80 \mathrm{~mm}$ is simply supported at two opposite ends on $230 \mathrm{~mm}$ thick masonry walls. The centre-to-centre distance between the walls is $3.3 \mathrm{~m}$. As per IS 456: 2000 , the effective span of the slab (in $\mathrm{m}$, up to two decimal places) is

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