Structure Design - I — Winter 2018

Explain in brief design philosophy of various methods of design.

Draw neat and clean figures for beam to beam connection and beam to column connection in steel design.

Write the design steps for the RC combined footing.

Sketch neatly the Design Stress and Strain Block Parameters and derive equation for Depth of Neutral Axis and Moment of Resistance for a balanced beam section.

Explain Strength, Serviceability, stiffness, stability and ductility in brief.

Explain one way shear check and two way shear check for footing design.

Draw the neat sketches of Lacing system, Battening system for steel columns.

Areinforced concrete beam of rectangular section 230 mm x 500 mm deep is reinforced with tensile and compressive reinforcement 4 nos. 20 mm dia. and nos. 16 mm dia. at effective cover of 50 mm on both side respectively. Using concrete M20 and Fe250. Find moment of resistance of the beam.

Acircular column 300 mm dia. and 5.5 m height is effectively held in position and direction at one end only held in position at other end. Use minimum % of steel. Use M20 and Fe415. Find safe load of column.

Design a simply supported two way slab of a clear size 3 m x 4 m for a live load of 3 kN/m2. The slab is supported on 250 mm wall. Assume corners are held down. Use M20 and Fe415. Perform all necessary checks and Sketch the reinforcement detailing.

i) A R.C.Cbeam has C/S 300 mm x 600 mm and is subjected to BM=110 kN.m, SF=90 kN, TM=40 kN.m. Determine the equivalent bending moment and shear force for which the section is to be designed. ii) Determine development length of 16 mm dia. bar in compression. Use M25 and Fe415.

Atwo span continuous beam of each span length 8 m is loaded with DL = kN/m and LL = 20 kN/m. Design the beam using plastic method. Take fy = 250 N/mm2.

Design suitable fillet weld to connect a tie plate 60 x 8 mm to a 12 mm thick gusset plate. The plate is subjected to load equal to full strength of member. Assume shop welding and Fe410.

A Tension member in a roof truss is subjected to factored tensile load of 300 kN. Design the member using two angles on both side of gusset plate. Assume fy = 250 MPa and 20 mm dia. bolt.1

Calculate the compressive strength of a single angle strut ISA 100 x 75 x 10 mm with c/c length of 1.5 m. Angle is loaded through one leg and ends are fixed. Consider 1 bolt at each end. Take fy = 250 MPa.

Calculate the moment carrying capacity of laterally unrestrained beam ISMB 350 of 3 m long. It has full torsional restraint and no warping restraint.