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i! <br />I' <br />i? <br />ii <br />INSTALLATION GUIDELINES <br />FOR LANDLOK® TRMs AND PYRAMAT's WPTRMs <br />SPECIAL. TRANSITION GUIDELINES <br />? Rock Riprap <br />Excavate an anchor trench 12 x 12 In (300 1300 mm) minimum at the transition between the mat and the rock Rprap. <br />Place roll end into anchor trench and secure with suggested anchoring devices at 12 in (300 mm) minimum intervals. <br />Position adjacent rolls and secure In anchor trench in same manner, <br />Backfill the anchor trench with rock Rprap. <br />Place rock riprep as specified, extending approximately 3 ft (i m) minimum beyond the anchor trench onto the mat <br />? concrete <br />•Altemative 1: Concrete Apron <br />• Place ready mixed concrete directly onto a 3 ft (0.9 m) wide minimum strip of mat. <br />-Alternative 2: Concrete Backfill <br />Excavate an anchor trench 12 x 12 in (300 x 300 mm) minimum at the edge of the concrete structure. <br />Place roil end into anchor trench and secure with suggested anchoring devices at 12 in (300 mm) minimum intervals. <br />Position adjacent'rolls and secure In anchor trench in same manner. <br />Backfill trench with concrete slurry. <br />• Alternative 3: Bolt to Structure (HPIRMs Only) <br />Cast threaded dowel in fresh ready mix concrete or install expanding bolt into cured concrete. <br />Then affix HPfRM with washer (minimum 2 in or 50 mm diameter) or batten strip and bolt. <br />? Pipe Inlets/Outlets (HPTRMs Only) <br />• Review the construction drawings and project specifications to evaluate the required area to be treated. <br />Excavate an anchor trench 12 x 12 in (300 x 300 mm) minimum above the pipe to bury end of HPTRM roll. <br />The trench shall be located a minimum 2-3 ft (600.900 mm) above the pipe inlet outlet <br />Backfill and compact soil into trench. <br />Cut HPTRM to meet project requirements, slope length and pipe diameter. <br />Unroll H PTRM down the slope and secure around pipe circumference with ground anchoring devices spaced 6 in (150 mm) minimum. <br />Also, the HPTRM can be secured around the pipe in a 12 x 12 In (300 x 300 mm) minimum trench filled with concrete slurry. <br />GROUND ANCHORING DEVICES <br />? Ground anchoring devices are used to secure the mat to the soil using the suggested anchor device (see Tables 1 and 2 on page 7) at a <br />minimum frequency and pattern shown on the Anchor Pattern Guide on page 7. <br />? U-shaped wire staples or metal geotextile pins can be used to anchor mat to the ground surface. Wire staples should be a minimum thickness <br />of 8 gauge (4.3 mm). Metal pins should be at least 0.20 in (5 mm) diameter steel with a 11/3 in (38 mm) steel washer at the head of the <br />pin, Wire staptes and metal pins should be driven flush to the soil surface, All anchors should be between 6-24 in (150.600 mm) long and <br />have sufficient ground penetration to resist pullout. Longer anchors may be required for loose soils. Heavier metal stakes may be required In <br />rocky soils. <br />-17