GATE Civil Engineering (CE) 2018 Shift 2 Solved Paper

Question : 19 of 65

Marks: +1, -0

A reinforced-concrete slab with effective depth of

80 {mm}

is simply supported at two opposite ends on

230 {mm}

thick masonry walls. The centre-to-centre distance between the walls is

3.3 {m}

. As per IS

456: 2000

, the effective span of the slab (in

{m}

, up to two decimal places) is

Solution:

Effective depth

d=80 {mm}

Width of support

=230 {mm}

c/c distance between walls

=3.30 {m}

Clear span of slab

=3.30-0.23=3.07 {m}

Effective span

=

Minimum

\{\table ⋅(L_{\text "dear "\;}+d) ; ⋅ {c} \/ {c} \;\text " distance between supports "\;.

=

Minimum

\{\table ⋅(3.07+0.08=3.15 {m}) ; ⋅ 3.3 {m}.

So,

L_{\;\text "eff "\;}=3.15 {m}

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