新建建筑地下防水系统安装指南.pdf

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1、Art TysonMTN Inc.Navigating Below-grade Waterproofing System Installation in New Construction Navigating Below-grade(BG)Waterproofing System Installation in New Construction Learning Objectives1.Review Role&Importance of BG Waterproofing in Building Structures Longevity2.Identify&Compare Common BG W

2、Ping Material Types&Methods3.Appreciate Pre-Installation and Preparation Reqs for Application Substrates4.Understand Necessary Sequencing&Mutual Coordination Amongst Interfacing Trades at JobsiteOverview:Why below-grade waterproof?General BG waterproofing methods Common BG waterproofing material typ

3、es Waterproofing challenges“Lessons Learned”Why waterproof a structure?.Substrates crack!Why waterproof a structure?.Challenge to mitigate!Leaks into a building create liability,reduce durability,degrade structural integrity,and are expensive and time consuming to fix.Methods of waterproofing Pre-ap

4、plied:Pros:Allows for maximum use of project footprint more real estate for owner Ability to resist large hydrostatic forceCons:Based on level&qty of detailing,may require more preplanning A.k.a.“Blindside”Applied before foundation structure builtMethods of waterproofing Post-applied:“Positive Side”

5、Applied to structures foundation exteriorPros:Typically,least problematic Project team has ability to inspect all laps,joints,details prior to backfillCons:Requires access to outside of the structure and large/safe laydown areaMethods of waterproofing Post-applied:Pros:Typically,remedial method prob

6、lem solving vs problem prevention Ease of applicationCons:Not as effective as positive side waterproofing due to movement and cracking Poor choice for hydrostatic conditions“Negative Side”Applied to structures interiorCommon types of waterproofing materials:Bituminous Sheet Membrane:Foundation walls