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Assessing Maintenance Needs:
Maintenance needs can be assessed by a careful inspection of roads at regular intervals, observing defects such as :
The modern method of assessing the riding quality of a road is by a Bump Integrator machine, towed by a vehicle at a speed of 30 Km/hr. The Bump Integrator (BI) value is expressed in mm/Km. The following gives the rough guide for BI value.
Table: Typical bump Integrator Values in mm/Km
A simple method of assessing the condition of a low volume rural road is by means of a Pavement Condition Index (PCI). The PCI value ranges from 1 (Very Poor) to 5 (Very Good) and can be assessed by one of the following methods :
(a) Based on visual inspection
(b) Based riding comfort, when travelling at 50 Km/hr speed
(c) Based on comfortable driving speed possible
Table : PCI Value Based on Visual Inspection
A square pile group of 9 piles of 25 cm diameter is arranged with a pile spacing of 1m. The length of the piles is 9 m. Unit cohesion of the clay is 75 kN/m 2 . Neglecting beari
Determine about the statement - Failure at Cracking Load This brittle mode of failure is likely to occur in those pre-stressed elements that are concentrically pre-stressed wit
Thermal stresses: In Thermal stresses, you have studied (a) The effect of temperature on bodies and materials, (b) The concept of thermal stresses, and (c) The techni
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Two load tests were conducted at a site-one with a 0.5 m square test plate and the other with a 1.0 m square test plate. For a settlement of 25 mm, the loads were found to be 60 kN
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State the Design process of Prestressed Concrete Most of the times, the design process is an interactive and trial procedure in which the cycle of analysis - design - analysis
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