Shorter span 4 2 (50) 3975.8 12 262 c K 3 560 28.5 1421.4 12 760 3975.8 2.79 1421.4 K c c From table 17 of IS: 456-2000 for L W 1 .1 7 & 1 .0 0 W L 2 L 1 D 0 .7 5 c ,m in c c ,m in o k Hence the correction for pattern loading in the direction of short span is not required. From table 17 of IS 456-2000 15 Imposed load/dead load l Ratio 2 l 1 Value of c,min (1) (2) (3) 0.5 1.0 1.0 1.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 3.0 3.0 3.0 3.0 3.0 0.5 to 2.0 0.5 0.8 1.0 1.25 2.0 0.5 0.8 1.0 1.25 2.0 0.5 0:8 1.0 1.25 2.0 0 0.6 0.7 0.7 0.8 1.2 1.3 1.5 1.6 1.9 4.9 1.8 2.0 2.3 2.8 13.0