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.0 thHl ..C._ and Acces­Jncl i, Sik.. Cell SIVS... <br />The Silva Cell system can be easily accessed for utility <br />installation, maintenance, relocation, replacement, etc <br />using the following procedure. <br />First, locate the limits of the Silva Cell system. <br />Carefully remove the existing pavement. Take care to not <br />operate machinery exceeding H-20 loading on any of the <br />surrounding pavement supported by the system. Do not <br />operate any machinery over the Silva Cell system once <br />the pavement has been removed. <br />Using hand tools remove the aggregate base course <br />and expose the underlying geotextile fabric. If working <br />near the perimeter of the system there will be also be <br />approximately 12" (30.5 cm) of geogrid that is folded <br />over and attached to the cell decks. Cut the geotextile <br />fabric as needed to allow for the removal of Cell decks. <br />If Geogrid is encountered, detach it from cell decks and <br />fold it back as well. Do not cut the Silva Cell frames (or <br />base and posts) or decks. Remove the Silva Cell decks <br />by rerriovinca the four corner screws and set it aside. <br />Remove the soil from inside the frames using hand tools <br />only or a HydroVac. (If the existing soil is to be reused, <br />store it separately to ensure that it does not become <br />contaminated with other spoil material. Otherwise <br />dispose of the soil and replace it with soil meeting the <br />requirernenfis specified for the project. All soil must: be <br />inspected and approved prior to reinstallation.) Carefully <br />remove any of the frames (or base and posts) needed <br />to complete utility work. Upon completion of the utility <br />work visually inspect the surrounding exposed Silva Cell <br />parts and remove any of those showing signs of damage <br />or cracking. Restore the disturbed portion of the system <br />using one of the two following methods: <br />Method 1: <br />Replace the Silva Cell frames (or base and posts), soil <br />and decks as required per Silva Cell installation details <br />and specifications. Re -wrap geogrid over decks with <br />an overlap at cut seam. Restore the aggregate base <br />course and pavement. Re -use only Silva Cell frames <br />(or base and posts) and decks that have been <br />thoroughly inspected and found to be free of damage <br />or cracking. Replace any parts showing signs of <br />clamage or cracking with new. <br />Method 2: <br />Structurally bridge the gap with 1 1;2" (3.8 cm) clear <br />stone. Install geogrid around the perimeter of the <br />area from which the Silva Cells were removed per <br />DeepRoot's construction guidelines. Fill inside void <br />area with 1 1,,,2" (3.8 cm) clear stone up to the level <br />of the adjacent Silva Cell decks. Cover the stone with <br />geotextile fabric making sure to overlap the existing <br />geotextile fabric by a minimum of 2 feet on all sides. <br />Restore the aggregate base course and pavement. <br />i.0 Pavernertt Re air or R.placer ,ent cver <br />Silva Cell <br />When the existing pavement over a Silva Cell system is to <br />be replaced by a different type of pavement, refer to the <br />Silva Cell standard details and specifications. A change <br />in surface materials may require a change in the depth of <br />the underlying aggregate base course. <br />5.0 ;;di mes Silva Cells to . he Sysi n; Re,',._,✓i.ng <br />Silva Cells horn I - he Vse n <br />To make changes to the size of the Silva Cell system, <br />locate the limits of the system. Carefully remove the <br />pavement taking care to ensure that no machinery <br />which exceeds H-20 loading is operated on pavement <br />supported by the Silva Cells and that no machinery is <br />operated over the Silva Cells once the pavement has <br />been removed. Using hand tools remove the aggregate <br />base and expose the underlying geotextile fabric. Cut the <br />geotextile fabric as needed to visually confirm the limits <br />of the Silva Cells. Excavate to no closer than 1' (30.5 cm) <br />of the limits of the Silva Cells. Using hand tools, expose <br />the geogrid which wraps the perimeter of the system. <br />Cut and fold back the geogrid as needed to add or <br />remove cells. If adding to the system, install the new Cells <br />per Silva Cell specifications. Ensure that the gap between <br />the existing Silva Cell frarnes (or base and posts) and <br />Silva Cell Operation and Maintenance Manual i <br />