Steel Crane Girder Design example

PROJECT STRUCTURE CODES

ELEMENT BS 5950 : PART 1 :2000

DESIGNED BY

Reference

Crane Gantry Girder

REF

CHECKED BY

26/09/2017

Calculations

Output

Based on the analysis critical member actions are as follows ● Ultimate Moment about major axis = 165.4 kNm ● Ultimate Shear through major axis = 217.7 kN ● Ultimate axial force = 20.7 kN ● Maximum deflection at service = 6.74 mm Girder Section = 356x171x67 356x171x67

Secion properties Flange width = B= 173.2 mm Outside height = D = 363.4 mm Flange thickness = T= 15.7 mm Web thickness = t= 9.1 mm Depth between fillets = d= 311.6 mm Table 9

Use S355 Steel; py = 355 N/mm

4

Ixx = 19460 cm Zxx = 1071 cm3 Sxx = 1211 cm3 A = 85.5 cm2 r y = 3.99 cm

4

J = 55.7 cm Iyy = 1362 cm4 r = 10.2 mm

2

Section classification

Table 11

 = (275/355)^0.5 = 0.88 Outstand element of compression flange Rolled section = b/T = 173.2/(2*15.7) = 5.51