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Axle loads on paved roads in Kenya
Trrl Lr 763 This report describes a study of the traffic loading on the paved primary roads of Kenya. The study formed part of a major field investigation designed to provide relationships for a computer model capable of estimating road construction costs, maintenance costs and vehicle operating costs. The work described in this report comprised part of the engineering investigations into th…
Calculated deck plate temperatures for a steel box bridge
Trrl Lr 760 A method based on the one dimensional heat flow equations published in TRRL Report LR 561 has been used in the case of a steel box bridge to calculate the deck plate temperatures resulting from various conditions of shade temperature, radiation and wind speed. The temperatures of other members of the box (i.e. other than the deck plate) may be deduced from the cross-section of th…
Axle-loads on paved roads in Kenya
Trrl Lr 763 The report describes a study of the traffic loading on the paved primary roads of Kenya. The study formed part of a major field investigation designed to provide relationships for a computer model capable of estimating road construction costs, maintenance costs and vehicle operating costs. The work described in this report comprised part of the engineering investigations into the…
Deflection-temperature relationships for bituminous road surfacings in Kenya
Details of deflection-temperature relationships are given for bituminous surfacings up to 150 mm thick on Kenyan roads. On some sites plastic deformation of bituminous surfacings was identified during deflection tests at relatively low temperatures. However valid deflection measurements could be obtained on other sites at surfacing temperatures up to 60 degrees C. Hardening of the bitumen in t…
Accessibility measures: a literature review
Trrl Lr 967 Accessibility is seen as being concerned with the opportunity available to an individual or type of person at a given location to take part in a particular activity or set of activities. However various other interpretations of the term accessibility measure has been applied it is necessary to consider also the range of definitions that have been given to the term accessibility. …
