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<br />In <br />c..._J <br />L'j <br /> <br />. <br /> <br />,.::;. <br /> <br /> <br />~! <br /> <br />.---. <br />'-.' <br /> <br />~/~, <br />,r7// " <br />,// .. <br />/ /1/ / ~ , :,. <br /> <br />, ,~. <br /> <br /> <br />. <br /> <br />,'.-'.... <br />> .j ~ <br />~~ 0, 0 <br /> <br />PICTURE NO. 2 <br /> <br />The cost of construction is about the same but those drops in <br />the ditch take a lot of time because they are hand formed. Also they <br />create a potential weakness in the structure where cracking is apt to <br />occur. <br /> <br />There are also two methods being used to place the ports within <br />the ditches. The first is to place those small metal gates on the <br />level and in the wet cement. as shown below. <br /> <br /> <br />Afterwards 2" Poly Ethlene pipes are cut <br />of the gates and through the ditch bank. <br /> <br />and made to fit over the ends <br />This process costs about $1.55 <br /> <br />- 16 - <br />