Recent questions tagged theory-of-structures

Description : State two advantages of fixed beam over simply supported beam.

Last Answer : 1. End slopes of fixed beam are zero 2. A fixed beam is more stiff, strong and stable than a simply supported beam. 3. For the same span and loading, a fixed beam has lesser values of ... same span and loading, a fixed beam has lesser values of deflections as compared to a simply supported beam. 

Description : Explain with sketch the effect of fixity on bending moment of a beam. 

Last Answer : If simply supported beam is considered subjected to any pattern of loading, beam bends and slopes will developed at the ends. If however, the ends of beam is firmly built in supports i.e. ends are ... , deflection of beam at center of beam is also reduced as compared to simply supported beam.  

Description : Explain the effect of eccentric load with sketch w.r.t stresses developed

Last Answer : Effect of eccentric load: A load whose line of action does not coincide with the axis of a member is called an eccentric load .The distance between the eccentric axis of the body and the point of ... member. Thus the resultant stresses due to direct as well as bending stresses in the member

Description : Write the values of stiffness factor for beams. i) Simply supported at both ends ii)/fixed at one end simply supported at other end 

Last Answer : i)Stiffness factor for a beam Simply supported at both the ends = 3EI /L  ii) Stiffness factor for a beam fixed at one end and simply supported at other end = 4EI/L

Description : Compare a simply supported beam and a continuous beam w.r.t deflected shape of a beam.

Last Answer : The firm of a curve to which the longitudinal axis of the beam bends after loading is called elastic curve or deflected shape of the beam. In the figure shows the deflected shape for various types ... shape is shown by a dotted curve. Deflected shape simply supported beam and continuous beam

Description : Define core of section.

Last Answer : Core of a section: Core of the section is that portion around the centroid in within which the line of action of load must act, so as to produce only compressive stress is called as core of the section. It is ... there is no tension anywhere in the section. emax = d/8 e = Core of section