/ 0
60%
Table of contents
Table of contents
Table of contents
/ 0
60%

Document in text mode:

PURPOSE–HeadwallsandEndwallsprotectvulnerablepipeendsandsupporttheroadedge.Iaddition,thesewallsalsoservetodirectflow,toreduceerosion,andtovisuallyidentifypipesalongtheroad.Whenproperlyconstructed,aheadwallcanimprovepipeefficiencyandanendwallcanstabilizeasteeproadbank.BENEFITS –Properly installed headwalls and endwallsprovide multiple maintenance and environmental benefits which are explained in the Center’s separate “Headwalls and Endwalls” technical bulletin. This bulletin focuses on the construction of these walls with the most common building material, natural stone. pictureStableheadwallwithbankwallWHERETOUSE•Usewithallroaddrainagepipes,includingcrosspipes,through-pipes,bankpipesanddrivewaypipes.•Usewithallstreamcrossingstructures,includingpipes,boxculverts,andbridges.StablestackedstoneendwallCONSIDERATIONSHeadwallsandEndwallsareanintegralpartofdrainagepipesandroadstreamcrossings.Naturalstoneheadwallsandendwallsoftencombinebothcosteffectivenessanddurability.Thestrengthofarockwal...