thousingforthousandsoffarmworkersinCalifornia.Today,thepaperhousesarestill7^holdingup_welLThebuildersnowguessthatthehouses8_willhaveausefullifeofat9least15or20years・Thenewerpaperhouses1()aremadeofaspeciallydesigned,5/16-inch-thick,chemicallytreatedkraftboard・Whencoatedonthe11outside.theboardhasastrengthof2,000poundspersquareinch.12Beside.thepaintonthewallsandceilingcanwithstand(经受)temperaturesupto1,900degreeF.Thekraftboardiswater-resistant(防水的).Thebasichousingunit,which13_costs_about$950,is20by20-5feet,14_weighsabout450pounds,andcanbepackedintwolargeboxesthatareeasilytransportedinatruck・Oncethebaseplatformhasbeenbuilt,threeworkerscansetuponehouseinaboutfivehours・Thebasicdesigncanbeextendedtoanylength,orcanbebuiltinawidevarietyofwaysforsomespecial15use,suchasaclassroom,meetinghallorlibrary.
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