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VERSA-LOK <br />Standard units <br />have a unique <br />hole-to-slot <br />pinning system <br />for easy installation <br />and superior <br />structural integrity. <br />YERSAA~OK" <br />liela{ning Wall Systems <br />Solid Solurrons. <br /> <br />VERSA-LOK® Standard System Overview <br />Pinning <br />VERSA-LOK Standard ~ ,+ <br />units interlock with non- <br />~ <br />-~~ ~, <br />corrosive VERSA-TUFF° , <br />t <br /> <br />Pins (two per unit). As , <br /> <br />.~ <br /> ~ <br />wall courses are installed, =~'ir -: :. <br />pins are inserted through <br />holes in uppermost course <br />units and are received in <br />slots of adjacent lower course units. <br />Pinning helps to align units in a <br />consistent 3/4-inch setback per course. <br />PINHOLE <br />U II <br />II <br />3/4" SETBACK ~I II <br />VERSA-TUFF PIN U I II <br />2 PER UNIT II <br />II II <br />I I II RECEIVING <br />II II SLOT <br />Pinning Detail <br />Unreinforced Walls <br />On many projects, VERSA-LOK Standard <br />retaining walls work purely as gravity systems <br />- unit weight alone provides resistance to earth <br />pressures. Frictional forces between units and <br />pin connections hold units together so walls <br />behave as coherent structures. Batter setback <br />of wall faces offers additional resistance <br />against overturning. <br />Maximum allowable wall height for gravity <br />walls varies with soil and loading conditions. <br />Generally, with level backfill, good soils, and no <br />excessive loading, VERSA-LOK Standard gravity <br />walls are stable to heights of four feet. <br />Reinforced Walls <br />When weight of units alone is not enough <br />to resist soil loads, horizontal layers of geosyn <br />thetics are used to reinforce soil behind walls. <br />With proper soil reinforcement and design, <br />VERSA-LOK Standard walls can be constructed <br />to heights in excess of 40 feet. Geosynthetics <br />do not act as tie-backs for wall faces. Rather, <br />geosynthetics and soil combine to create <br />reinforced soil strictures that are strong and <br />massive enough to resist forces exerted on them. <br />In soil-reinforced walls, Standard units simply <br />retain soil between layers of geosynthetics <br />and provide attractive, durable faces. <br />Refer to next page <br />VERSA-LOK STANDARD DESIGN AND INSTALLATION GUIDELINES <br /> <br /> <br />