Structure Engineering notes for GATE and PSUs - part 13

Hello there,
How have you been!?

 Here is our next part for your preparation for the GATE and PSUs examinations.

All information is learned through books and practical exercises.

1. The symmetrical two-hinged parabolic arch when subjected to a uniformly distributed load on the whole span, is subject to normal thrust only.
2. In a two-hinged arch, an increase in temperature induces a maximum bending moment at the crown.
3. The normal thrust at any section of the arch is the component of interacting forces on the section along the tangent to the centerline of the arch.
4. The radial shear at any section of the arch is the component of the interacting forces on the section along the normal to the centerline of the arch.
5. The intercept between a given arch and the linear arch at a section is proportional to the bending moment at the section.
6. A fixed beam AB is subjected to a triangular load varying from zero at end A to 'w' per unit length at end B. The ratio of fixed end moment at end B to that at end A is 3/2.
7. The horizontal thrust due to the rise in temperature in a semi-circular two-hinged arch of radius R is proportional to 1/R2.

Thanks!