SOLUTIONS: Total load= 10×2+15= 35kN Taking moments about A RB×6 = 15×4+ (10×2) 2/2 RB×6 = 80 RB = 80/6 = 13.33kN RA = Total load – RB RA= 35 -13.33 = 21.67kN
SOLUTION: Total load = 10kN Taking moments about A RB ×4=10×1 RB= 10 / 4 = 2.5kN RA= 10 – 2.5 = 7.5kN Taking moments about B’ RA x 4= 10 x 3 RA = 30/4 = 7.5 kN
Q. The 30 m chain measured the distance between two points as 540 m. Later, it was discovered that the chain was 6 cm too long. What is the true distance between the points? Solution: True length of the chain, L = 30m Error in chain, e = 6cm = 0.06m too long. Incorrect length … Read more
LOCAL ATTRACTION OF COMPASS SURVEYING The magnetic needle does not indicates the north direction, when it is under the influence of attractive bodies in its surroundings, such a disturbing influence is termed as “Local attraction”. The disturbing magnetic substances may be iron ore, steel structures, rails, electric cables carrying current, lamp posts, fences and materials … Read more
RANGING AND CHAINING OF SURVEY LINES RANGING A SURVEY LINE Process of establishing intermediate points on a survey line, The process between two stations is known as ranging of survey lines or simply ranging. Ranging must be done before chaining a survey line, if the distance between two stations is more than the length of … Read more
DIVISION OF SURVEYING Division of Surveying is divided into two main divisions. They are 1. Plane Surveying and 2 Geodetic Surveying 1. Plane Surveying : Plane Surveying is that type of surveying in which the spheroidal shape of the earth is neglected and the shape of the earth is considered as plane. This is because, … Read more
CLASSIFICATION OF SURVEYING Surveys may be classified in four different ways, they are discussed as under 1. Classification Based on Instruments Used: (a) Chain Survey: It is done by using chain or tape, by measuring linear distances. Metric chains 20 or 30 m are used. The principle used is chain triangulation, in this method the … Read more
LINEAR MEASUREMENTS AND ANGULAR MEASUREMENTS Linear Measurements: •The unit of measurement of distance is metres and centimetres. •But currently S.I. units are under practice, the unit of linear measurement is metres and millimeters •However, prior to the introduction of above act in India, the unit of linear measurements are feet, tenth and hundredths of a … Read more
BASICS SURVEYING MEASUREMENT AND UNITS Basic and Derived units of length. Area and volume in the SI system QUANTITY NAME OF THE SI UNITS SYMBOL 1. LENGTH Metre m Kilometre km Centimetre … Read more
GRADES OF CONCRETE AND IT’S APPLICATIONS GRADES OF CONCRETE AND IT’S APPLICATIONS: In this lecture I am going to discuss about the various grades of concrete in which I will introduce you about grades of concrete 1.concrete cube test. 2. The groups of concrete grades 3. Types of concrete grades and their ingredient ratios 4. … Read more