Short note on System of forces
When a number of forces acts on a body, or group of bodies, they form a system of forces or force system. Depending upon the orientation of forces acting on a body the system of…
Month: October 2020
Short note on Theodolite and important parts of a Theodolite
It is an instrument which is used mainly for accurate measurement of horizontal and vertical angles up to 10' or 20'. Theodolite is used for following purposes: to measure horizontal angle and vertical angles. Theodolite…
Steel Structures MCQs Mock test Set-1
[watupro 78]
Plane table accessories or equipments required to carry out survey
The instruments required to carry out the plane table survey are as follows: • Plane table: It consists of board, 750×600 mm and about 25 mm thick. It is mounted on a tripod. • Alidade:…
Short note on Dumpy level, its parts/components, neat sketch and details
Figure shows the sketch of a dumpy level. It is very simple, stable and easy to use. It consist of telescope, which is fixed with the supports and hence, it is not possible to rotate…
Difference between Direct and Indirect methods of Contouring
S.No.Direct MethodIndirect Method1.In this method, the contours are directly located on the ground and the points of given contour are marked on the ground.In this method, levelling work is carried out in the field and…
Define Under rigid, just rigid and over rigid trusses
Before we start, we all know that trusses classification is based on their rigidity. A under rigid truss is one in which number of members are not sufficient to maintain the stability of structure under…
Strength of Materials MCQs Set-3
[watupro 76]
Define Truss and list the assumptions made for the analysis of a truss
Truss may be defined as a structure made up of several bars joined together at their ends. These bars which are made up of angles or channel sections are called members of the truss. Various…
Explain free body diagram and draw the free body diagram of a ball of weight W placed on a horizontal surface
A body in equilibrium is subjected to a number of external forces and reactive forces, provided by the supports. The equilibrium of such bodies may be considered by removing the supports and replacing them by…
Difference between resultant and equilibrant and what do you understand by “A body is in Equilibrium”
If a number of forces are acting simultaneously on a particle, it is possible to find out a single force which could replace them i.e. which would produce the same effect as produced by all…
Composition/proportions of cement mortar for various uses
S.No.Nature of WorkMortar Type and Composition1.Pointing work1:1 to 1:2 cement sand mortar2.Reinforced brickwork1:3 cement sand mortar3.Damp proof courses and cement concrete roads.1:2 cement sand mortar4.Thick joints in stone masonry.Hydraulic lime sand mortar (1:2 to 1:3)5.Brick…
Different types of defects That appears in Timber
Defects in timber are normally caused by changing climatic conditions. Some important defects and diseases are : Star Shakes: These are radial splits which are starting from the bark, running in the planes of medullary…
What is meant by Timber and what are the uses of Timber
Timber is an old age building material. The term 'timber' means the wood of sufficient size, which is suitable for engineering construction purpose. It is used in building construction in various locations such as beams,…