Gravel Roads

Gravel Roads

Author: Ken Skorseth

Publisher:

Published: 2000

Total Pages: 112

ISBN-13:

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The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.


Sand and Sustainability

Sand and Sustainability

Author: Programme des Nations Unies pour l'environnement. GRID-Geneva

Publisher:

Published: 2019

Total Pages: 35

ISBN-13: 9789280737516

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Sand and gravels are the unrecognised foundational material of our economies. They are mined the world over, with aggregates accounting for the largest volume of solid material extracted globally (Peduzzi, 2014; Beiser, 2018). At the same time, these materials cannot be produced from our terrestrial, riverine and marine environments in quantities needed to meet demand from a world of 10 billion people without effective policy, planning, regulation and management. Such actions remain largely unaddressed by decision makers in public or private sectors. It is time to challenge the paradigm of infinite sand resources through constructive dialogue and solution-finding. This report aims to be the starting point from which a productive global conversation on sand extraction can begin. This synthesis was produced following a United Nations Environment Programme expert roundtable event held on 11 October 2018 in Geneva, Switzerland. The discussions emphasised potential solutions for mitigating mineral sands and aggregates extraction impacts and generating adequate support for responsible consumption pathways. Expert views were collated and complemented with additional research and consultation to distil key messages on an agenda for tackling this issue in 2019 and beyond.


Sand Stories

Sand Stories

Author: Kiran Pereira

Publisher:

Published: 2020-12-08

Total Pages: 352

ISBN-13: 9781838125202

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In Sand Stories, Kiran Pereira examines why sand is the most consumed commodity on the planet after water and the impacts of this seemingly insatiable demand for sand. The book offers a wealth of potential solutions and is richly illustrated.