Week 2 Challenge
Q1. Net Area for tension member calculation problem
Aim: To Calculate the net section area for the tension member as shown in Figure below. The plate size is 260 x 20 thick and Bolt size is 20 mm.
Ans:
Plate – Drilled Hole
Plate – Zigzag bolting
Angle (200 x 100 x 12 with M20 bolt)
2. Sag rod design problem
Aim: To design a sag rod as shown in the Figure below. Purlins are supported at 1/3rd points by sag rods.
Ans:
Assume center to centre distance of the Rafter spaced at 8 m, spacing of purlin = 1.2 m, the Self weight of roofing (including thermal insulation)= 60 kg/m2, Wind pressure intensity = 150 kg/m2, Slope of the rafter = 15 degrees, Live Load =75 kg/m2. Assume self weight of purlin as 100 kg/m.
3. Determine section size for given tensile load
Aim: To Design a single angle member of length 5m to carry axial tensile force of 500 kN. Yield strength fy of the material to be considered is 350 N/mm2.
Ans:
