1887

oa Civil Engineer in South Africa - An evaluation of low standard pavements in the south-western Transvaal

Volume 22, Issue 9
  • ISSN : 0009-7845

 

Abstract

As a trial in the late 1960's, the design standards for certain lightly-trafficked roads in the south-western Transvaal were lowered in order to reduce the costs and hence increase the length of roads which could be surfaced. One- and two-layer pavement designs were adopted.


Based on the experience with these roads and a thorough structural evaluation of the performance after nine to twelve years' use, the low standard specification is shown to be a viable and economic alternative to the normal provincial standard for a rural road. On the present worth of total costs it is shown to be 26 per cent cheaper than a similar pavement built to the normal standard.
Recommendations are made for the design of pavements for low standard roads in farming areas having a relatively low rainfall.

As 'n proefneming in die laat sestigerjare is die ontwerpstandaarde van sekere paaie met ligte verkeer in suidwes-Transvaal verlaag om die tempo van betering te verhoog en om kostes te verminder. Een- en tweelaag plaveiselontwerpe is gebruik.


Gebaseer op die ondervinding met hierdie paaie en 'n deeglike strukturele evaluering van die paaie na nege tot twaalf jaar se gebruik, word daar aangedui dat die lae standaard spesifikasie 'n lewensvatbare en ekonomiese alternatief is vir die normale provinsiale standaard vir 'n plattelandse pad. Op die basis van die huidige waarde van die totale koste word daar getoon dat die lae-standaard pad 26 persent minder kos as 'n soortgelyke pad wat volgens die normale standaard gebou is.
Aanbevelings word gemaak vir die plaveiselontwerp van lae-standaard paaie in boerdery-gebiede met 'n betreklike lae reënval.

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1980-09-01
2016-12-11

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