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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
Resultant force at a section We can determine stresses at top and bottom fibres, at a section of a beam, due to pre-stressing force and external loads. Using them, we can draw
An oven-dry soil sample of volume 225 cm3 weighs 3.90 N. If the grain specific gravity is 2.72, determine the void-ratio and shrinkage limit. What will be the water content which w
Q. Show the Purpose of granular bedding for concrete pipes? When designing the bedding for concrete drainage pipes, granular materials are generally specified in place of soils
Common ways to present the project schedule include all except: a. Gantt charts b. Milestone charts c. PERT charts D. Project Network Diagrams with dates added So
Estimate total dissolved solids, Alkalinity and Hardness A sample of water from Brazos River at Brenham was collected and analyzed for water quality characteristics and the dat
how to design asewa system ??
Q. What is Preset in bridge bearing? 'Preset' is a method to decrease the size of upper plates of sliding bearings in order to save cost. Normal length of an upper bearing plat
gabbion retaining wall design
on timber, varieties , preservation, and seasoning of timber
a pilot entering a bay on course
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