Steel Structure Design Questions

• When a large value of radius of gyration is not required
• A 20 mm dia steel bar which is subjected to an axial tension of 2300 kg/cm2 produces a strain of 0.004 cm. If Young's modulus of steel is 2.1 x 106 kg/cm2, the bar is
• A simply supported beam carrying a central load, will be safe in deflection if the ratio of its span to depth, is
• If the slenderness ratio is greater than 160, the allowable stress in axial compression is multiplied by a factor (1.2 - (l/xy) where x is
• For double angles carrying tension, placed back to back and connected to either side of the gusset plate, the sectional area of the section, is equal to cross sectional area of
• A major beam in a building structure, is known as
• The moment of the couple set up in a section of a beam by the logitudinal compressive and tensile force, is known as
• The bending moment for filler joists at the middle of at intermediate span, is
• The effective length of a compression member of length L, held in position and restrained in direction at both ends, is
• The rivets which are heated and then driven in the field, are known
• A tension member, if subjected to possible reversal of stress due to wind, the slenderness ratio of the member should not exceed
• An axial loaded column is supported on a slab base whose projection is 8 cm. If the intensity of pressure from concrete is 40 kg/cm2 and allowable bending stress in slab base is 1890 kg/cm2, the thickness (t) of the slab base, is
• The most commonly used sections in lateral system to carry shear force in built up columns, are
• The maximum axial load which is just sufficient to keep a column in a small deflected shape, is called
• The spans are considered approximately equal if the longest span does not exceed the shortest span by more than
• When two plates are placed end to end and are joined by two cover plates, the joint is known as
• Poisson's ratio for steel within elastic limit, ranges from
• If p and d are pitch and gross diameter of rivets, the efficiency (η) of the riveted joint, is given by
• A long plate girder is subjected to a maximum bending moment M in which permitted allowable bending stress is fb. The economical depth de and the thickness of the web tw, is given by
• For columns whose slenderness ratio is upto 160, the secant formula for the determination of allowable stress, is