The most common device for regulating, warning and guide drivers is called traffic signs. It has following types: 1) Regulatory and Mandatory Signs These signs impose the legal restrictions applicable at particular locations being usually unenforceable in the absence of …
The traffic capacity or highway capacity may be defined as the total number of vehicles that can pass a given point on the highway in a unit period of time. The highway or traffic density is defined as the total …
The features of the contours are as follows: 1) Two contours of different elevations do not cross each other except in the case of overhanging cliff. 2) Contour drawn closer depict a steep slope and, if drawn far apart represents …
The difference between Height of Collimation Method (HCM) and Rise and Fall Method (RFM) are as follows: HCM :It is more rapid and saves a considerable time and labour.RFM : It is laborious as the staff reading of each station …
There are three types of Slump that may occur in slumps test, namelyTrue Slump, Shear Slump and Collapse Slump. True Slump refers to general drop of the concrete mass evenly all around without disintegration. Shear Slump implies that the concrete …
Fault Plane The interior of the earth becoming cooler day by day, which is sure to cause some shrinkage in the earth crust. The stink age is responsible for the stress to be developed withing the earth crust. These stresses, …
Warping is the bending of the concrete slab due to uneven expansion or contraction of top and bottom slab surfaces. It is caused by any differences in temperature above and below the slab or caused by the moisture differences. Warping …
PCU is Passenger Car Unit. For traffic analysis, all the vehicles are converted to car by multiplying with their PCU value. List of vehicles with their PCU value are : Motercycle : 0.5Bus ,Truck ,Tractor : 3.5Car : 1Bicycle: 0.2Horse …
Absorption generally refers to two phenomena, which are largely unrelated. In one case, it refers to when atoms, molecules, or ions enter some bulk phase – gas, liquid or solid material. For instance, a sponge absorbs water when it is …
1) Lime: It makes the cement sound and strong. The lime in excess quantity makes the cement unsound and cause the cement to expand and disintegrate. 2) Silica: It provides strength to the cement due to the formation of dicalcium …