Minor axis Plastic section modulus

The minor axis plastic section modulus for ISMB 225 and ISMB 250 hugley differ-

for ISMB 225- 177406.67 mm3

for ISMB 250- 353.54 mm3

Please find below the tabulated properties ( highlighted in yellow) as obtained thru sectin wizard (STAAD Pro V8i Select Series 2- 20.07.07.32)

This is a serious error.

The overall dimensions of the section are 150 x 245 mm

Basic geometry of the section

	Parameter	Value
A	Cross sectional area	6970.0	mm²
a	Angle between Y-Z and U-V axes	-0.0	deg
I_y	Moment of inertia about axis parallel to Y passing through centroid	75863749.51	mm⁴
I_z	Moment of inertia about axis parallel to Z passing through centroid	7804999.91	mm⁴
I_t	Torsional moment of inertia (St. Venant)	255168.14	mm⁴
i_y	Radius of gyration about axis parallel to Y passing through centroid	104.33	mm
i_z	Radius of gyration about axis parallel to Z passing through centroid	33.46	mm
W_u+	Max elastic modulus about U-axis	619295.93	mm³
W_u-	Min elastic modulus about U-axis	619295.93	mm³
W_v+	Max elastic modulus about V-axis	104066.67	mm³
W_v-	Min elastic modulus about V-axis	104066.67	mm³
W_pl,u	Plastic modulus about U-axis	695591.37	mm³
W_pl,v	Plastic modulus about V-axis	177406.67	mm³
I_u	Moment of inertia about U-axis	75863749.51	mm⁴
I_v	Moment of inertia about V-axis	7804999.91	mm⁴
i_u	Radius of gyration about U-axis	104.33	mm
i_v	Radius of gyration about V-axis	33.46	mm
a_u+	Centroid to edge of compression zone along +ve U-axis	14.93	mm
a_u-	Centroid to edge of compression zone along -ve U-axis	14.93	mm
a_v+	Centroid to edge of compression zone along +ve V-axis	88.85	mm
a_v-	Centroid to edge of compression zone along -ve V-axis	88.85	mm
y_M	Distance to centroid along Y-axis	55.0	mm
z_M	Distance to centroid along Z-axis	112.5	mm
y_P	Distance to equal area axis along Y-axis	54.9	mm
z_P	Distance to equal area axis along Z-axis	109.19	mm

For ISMB 250-

The overall dimensions of the section are 150 x 270 mm

Basic geometry of the section

	Parameter	Value
A	Cross sectional area	7750.0	mm²
a	Angle between Y-Z and U-V axes	-0.0	deg
I_y	Moment of inertia about axis parallel to Y passing through centroid	102044999.33	⁴
I_z	Moment of inertia about axis parallel to Z passing through centroid	8975000.04	mm⁴
I_t	Torsional moment of inertia (St. Venant)	311056.22	mm⁴
i_y	Radius of gyration about axis parallel to Y passing through centroid	114.75	mm
i_z	Radius of gyration about axis parallel to Z passing through centroid	34.03	mm
W_u+	Max elastic modulus about U-axis	755888.88	mm³
W_u-	Min elastic modulus about U-axis	755888.88	mm³
W_v+	Max elastic modulus about V-axis	119666.67	mm³
W_v-	Min elastic modulus about V-axis	119666.67	mm³
W_pl,u	Plastic modulus about U-axis	1569986.72	mm³
W_pl,v	Plastic modulus about V-axis	353.54	mm³
I_u	Moment of inertia about U-axis	102044999.33	⁴
I_v	Moment of inertia about V-axis	8975000.04	mm⁴
i_u	Radius of gyration about U-axis	114.75	mm
i_v	Radius of gyration about V-axis	34.03	mm
a_u+	Centroid to edge of compression zone along +ve U-axis	15.44	mm
a_u-	Centroid to edge of compression zone along -ve U-axis	15.44	mm
a_v+	Centroid to edge of compression zone along +ve V-axis	97.53	mm
a_v-	Centroid to edge of compression zone along -ve V-axis	97.53	mm
y_M	Distance to centroid along Y-axis	62.5	mm
z_M	Distance to centroid along Z-axis	125.0	mm
y_P	Distance to equal area axis along Y-axis	354.1	mm
z_P	Distance to equal area axis along Z-axis	-443.08	mm

These properties are generated using Section Wizard