BS 7973 Spacers and chairs for steel reinforcement and their specification

Superpave Mixture Design Guide

Superpave design methods and tools are being implemented by many State agencies to replace the Marshall and Hveem design methods. In 1999, 2,515 projects, specifying some 73 million metric tons of Superpave, were let.[1] The majority of the projects in 1999 and in previous years were constructed with little or no difficulty. On several projects, there were some problems during this initial implementation. For the most part, the causes of the problems have been identified and have been solved. In 2000, estimates were that more than 3,900 projects, specifying some 134 million metric tons of Superpave, would be let; this would represent 62 percent of the total hot-mix asphalt (HMA) tonnage expected to be contracted for by State agencies during 2000 in the United States.[1] Superpave has become the mixture design method of choice by most State transportation departments across the country.

Proceedings of the North American Tunneling Conference 2004

Sustainability at the cutting edge

BS EN 14758-1:2005 +A1:2009 Plastics piping systems for non-pressure underground drainage and sewerage — Polypropylene with mineral modifiers (PP-MD) — Part 1: Specifications for pipes, fittings and the system

This European Standard specifies the requirements for solid-wall pipes, fittings and the system of piping systems made from mineral modified polypropylene materials (PP-MD) in the field of non-pressure underground drainage and sewerage outside the building structure (application area code "U"), and nonpressure underground drainage and sewerage for both buried in ground within the building structure (application area code "D") and outside the building structure.
This is reflected in the marking of products by "U" and "UD". It also specifies the test parameters for the test methods referred to in this European Standard.
This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives recommendations concerning colours.
NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. In conjunction with Part 2 and Part 3 of EN 14758 (see Foreword) it is applicable to PP-MD pipes and fittings, their elastomeric sealing ring joints and to joints with components of other plastics and non- plastics materials intended to be used for buried piping systems for non-pressure underground drainage and sewerage.
This European Standard is applicable to PP-MD pipes with or without an integral socket.
NOTE 2 The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings.
NOTE 3 Requirements and limiting values for application area code "D" are given in Table 4, Table 7 and Table 13.
NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex B can
be used with pipes and fittings conforming to this European Standard, when they conform to the requirements for joint
dimensions given in Clause 6 and to the requirements of Table 13.

BS EN 14636-1:2009 Plastics piping systems for non-pressure drainage and sewerage — Polyester resin concrete (PRC) Part 1: Pipes and fittings with flexible joints

This European Standard applies to pipes and fittings made from polyester resin concrete (PRC, see 3.1.23), intended to be used within a drain or sewer system operating without pressure. It applies to products for use in buried installations to be installed by open-trench techniques or pipe jacking. It applies to pipes, fittings and their joints of nominal sizes from DN 150 to DN 3000 for circular cross-sections, from WN/HN 300/450 to WN/HN 1400/2100 for egg-shaped cross-sections and from DN 800 to DN 1800 for kite-shaped cross-sections.
The intended use of these products is for the conveyance of sewage, rainwater and surface water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 0,5 bar1), and installed in areas subjected to vehicle and/or pedestrian traffic.
NOTE 1 The attention of readers is drawn to applicable requirements contained in EN 476. It specifies definitions, requirements and characteristics of pipes, fittings, joints, materials, test methods and marking.
The pipes are classified on the basis of the intended method of installation and cross- sectional shape.
NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections,

Cranes and Derricks, Fourth Edition