ASTM_E_2788_-_11.pdf

Designation:E278811Standard Specification forUse of Expanded Shale,Clay and Slate(ESCS)as a MineralComponent in the Growing Media and the Drainage Layerfor Vegetative(Green)Roof Systems1This standard is issued under the fixed designation E2788;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the quality and grading of thefollowing materials for use as a mineral component of growingmedia and drainage layer for extensive and intensive vegetative(green)roof systems.The requirements are intended to coveronly materials having normal or average gradation character-istics.Procedures covered in this specification are not intendedfor evaluating the performance nutrients associated with veg-etative(green)roof growing media Where other materials areto be used,appropriate limits suitable to their use must bespecified.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This standard offers an organized collection of informa-tion or a series of options and does not recommend a specificcourse of action.This document cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word Standard in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.2.Referenced Documents2.1 ASTM Standards:2C29/C29M Test Method for Bulk Density(“Unit Weight”)and Voids in AggregateC88 Test Method for Soundness of Aggregates by Use ofSodium Sulfate or Magnesium SulfateC127 Test Method for Density,Relative Density(SpecificGravity),and Absorption of Coarse AggregateC131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles MachineC136 Test Method for Sieve Analysis of Fine and CoarseAggregatesC330 Specification for Lightweight Aggregates for Struc-tural ConcreteC331 Specification for Lightweight Aggregates for ConcreteMasonry UnitsD75 Practice for Sampling AggregatesD4254 Test Methods for Minimum Index Density and UnitWeight of Soils and Calculation of Relative DensityD4767 Test Method for Consolidated Undrained TriaxialCompression Test for Cohesive SoilsD5883 Guide for Use of Rotary Kiln Produced ExpandedShale,Clay or Slate(ESCS)as a Mineral Amendment inTopsoil Used for Landscaping and Related PurposesD6739 Test Method for SilicapH ValueE2114 Terminology for Sustainability Relative to the Perfor-mance of BuildingsE2399 Test Method for Maximum Media Density for DeadLoad Analysis of Vegetative(Green)Roof Systems3.Terminology3.1 Definitions:3.1.1 For terms related to Expanded Shale,Clay and Slate(ESCS),refer to Terminology D5883.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.24on Sustainability.Current edition approved Dec.1,2011.Published February 2012.DOI:10.1520/E2788-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.2 For terms related to sustainability relative to theperformance of buildings,refer to Terminology E2114.3.2 Definitions of Terms Specific to This Standard:3.3 expandedshale,clay,andslate(ESCS),nalightweight,ceramic material produced by expanding andvitrifying select shale,clay,or slate in a rotary kiln.3.4 extensive vegetative(green)roof system,na vegetative(green)roof system that utilizes a narrow range of specieslimited to herbs,grasses,mosses,and drought tolerant succu-lents such as sedum.These types of plants can potentially besustained in a shallow growing media layer usually six inchesand under with generally less maintenance than intensivevegetative(green)roof systems.3.5 vegetative(green)roof system,nassembly designed tosupport vegetation growth above a waterp