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ID:8081173
大小:202.47 KB
页数:5页
时间:2018-03-05
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1、12GardenwallsandcreativeshapesGardenwallscanbeconstructedofplasteredstraw,butsincetheyarenotcoveredwitharoof,particularattentionshouldbepaidtoprotectingthetopofthewallfromwaterentryintothestraw.Asimpleandsecuremethodistocapthewallwithawaterproofcover
2、—amini-roof—whichmaybemetalorotherroofingmaterial,includinganimperviousmasonrytop.Alesssecurealternativeistoinstallplasticunderlaysheetonthetopofthewallbeforerenderisapplied.Thepurposeoftheplasticunderlayistodirectawayfromthestrawanywaterthatentersth
3、etopofthewallthroughcracksthatmightoccurovertime.Althoughsomegardenwallsbuiltbythismethodappeartobequitesoundafterseveralyears,thatisashorttestperiod.Itremainsdesirabletouseasuitablemini-roofforstrawbalegardenwallstoensurethattheywillsurviveformanyde
4、cades.Ofcoursethehorizontalpre-constructionmethodcanbeappliedreadilytotheconstructionofgardenwalls,thoughasuitableflatsurfaceonwhichtoconstructthewallmightnotbesoreadilyavailable.Thefootingsofgardenwallsshouldreachsufficientlyabovethesurroundinggroun
5、dlevelonbothsidesofthewalltopreventlaterproblemswithwater.Slopingsitesneedtobeconsideredcarefullywithrespecttowherewaterwillflowandlie.Substantialweeporflowholesthroughthefootingswillbedesirableinsomesituations.Althoughitis,nodoubt,possibletodesignmo
6、isturebarriersandstructuralfeaturesthatwouldenablestrawbalewallstobeusedasearth-retainingwalls,theextraeffortrequiredusuallywouldnotmakestrawbaleconstructioncost-andlabour-effectivecomparedwithuseofothermaterials.Theraisedfootingsrequiredforstrawbale
7、gardenwallslendthemselvestoeasyutilisationofthenewtensioningsystem(seepage60),becausetherewillbefreeareaabovegroundwherethetensioningtubescanbeinsertedintheGardenwallsandcreativeshapes89footingsatthetimeoflayingtheconcrete.Thesetubesshouldextendsuffi
8、cientlyfromthefaceofthefootingtoenableonetoattachthetwistedwireloopwire-lockholders.Theendsofthesetubesmustbekeptfreeofconcreteduringpouringofthefootings,andthereshouldbemeanstofindthemeasilywhenthefootingsarefinished.Tosatisfybothoftheserequirements
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