Anmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol SrivastavaAnmol Srivastava

7 · IS 456 Table 26 — Reference

Bending moment coefficients for rectangular panels supported on four sides with provision for torsion at corners.

Current design: ly/lx = 1.500, panel Case 1. Interpolated coefficients: αx(−) = 0.0530, αx(+) = 0.0410, αy(−) = 0.0320, αy(+) = 0.0240.

Active panelthick = continuous edge · dashed = discontinuous

ly/lx bracket: 1.50 → 1.50

αx(−): 0.053 → 0.053 ⇒ 0.0530

αx(+): 0.041 → 0.041 ⇒ 0.0410

Case	Type of panel & moment	1.0	1.1	1.2	1.3	1.4	1.5	1.8	2.0	αy
1	Interior panel — all four edges continuousNegative moment at continuous edge	0.032	0.037	0.043	0.047	0.051	0.053	0.060	0.065	0.032
1	Positive moment at midspan	0.024	0.028	0.032	0.036	0.039	0.041	0.045	0.049	0.024
2	One short edge discontinuousNegative moment at continuous edge	0.037	0.043	0.048	0.051	0.055	0.057	0.064	0.068	0.037
2	Positive moment at midspan	0.028	0.032	0.036	0.039	0.041	0.044	0.048	0.052	0.028
3	One long edge discontinuousNegative moment at continuous edge	0.037	0.044	0.052	0.057	0.063	0.064	0.077	0.085	0.037
3	Positive moment at midspan	0.028	0.033	0.039	0.044	0.047	0.051	0.059	0.065	0.028
4	Two short edges discontinuousNegative moment at continuous edge	0.047	0.053	0.060	0.065	0.071	0.075	0.084	0.091	0.047
4	Positive moment at midspan	0.035	0.040	0.045	0.049	0.053	0.056	0.063	0.069	0.035
5	Two long edges discontinuousNegative moment at continuous edge	0.045	0.049	0.052	0.056	0.059	0.060	0.065	0.069	0.045
5	Positive moment at midspan	0.035	0.037	0.040	0.043	0.044	0.045	0.049	0.052	0.035
6	Two adjacent edges discontinuousNegative moment at continuous edge	0.045	0.049	0.052	0.056	0.059	0.060	0.084	0.091	0.045
6	Positive moment at midspan	0.035	0.043	0.051	0.057	0.063	0.068	0.080	0.088	0.035
7	Three edges discontinuous (one long edge continuous)Negative moment at continuous edge	0.057	0.064	0.071	0.076	0.080	0.084	0.091	0.097	0.057
7	Positive moment at midspan	0.043	0.048	0.053	0.057	0.060	0.064	0.069	0.073	0.043
8	Three edges discontinuous (one short edge continuous)Negative moment at continuous edge	0.057	0.064	0.071	0.076	0.080	0.084	0.091	0.097	0.057
8	Positive moment at midspan	0.043	0.051	0.059	0.065	0.071	0.076	0.087	0.096	0.043
9	Four edges discontinuousNegative moment at continuous edge	0.056	0.064	0.072	0.079	0.085	0.089	0.100	0.107	0.056
9	Positive moment at midspan	0.056	0.064	0.072	0.079	0.085	0.089	0.100	0.107	0.056

αx values apply to the shorter span lx and vary with ly/lx; αy values apply to the longer span and are constant. Moments are Mu = α · wu · lx².

RC Slab Design — IS 456:2000

7 · IS 456 Table 26 — Reference

Interpolation used

Table 26 — all cases