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stakes, 8 feet long, set 2 feet in the ground. Place the tree midway between the stakes and hold it <br />firmly in place by flexible strapping materials as noted above. <br />580-5.3 Large Trees: Guy all trees, other than palm trees, larger than 3 1/2 inches <br />caliper, from at least three points, with flexible strapping materials as noted above. <br />Anchor flexible strapping to 2 by 4 by 24 inch stakes, driven into the ground such <br />that the top of the stake is at least 3 inches below the finished ground. <br />580-5.4 Special Requirements for Palm Trees: Brace palms which are to be staked <br />with three 2 by 4 inch wood braces, toe -nailed to cleats which are securely banded at two points <br />to the palm, at a point one third the height of the trunk. Pad the trunk with five layers of burlap <br />under the cleats. Place braces approximately 120 degrees apart and secure them underground by <br />2 by 4 by 12 inch stake pads. <br />8-13.6 580-6 Tree Protection and Root Barriers. <br />Install tree barricades when called for in the Contract Documents or by the Engineer to <br />protect existing trees from damage during project construction. Place barricades at the drip line <br />of the tree foliage or as far from the base of the tree trunk as possible. Barricades shall be able to <br />withstand bumps by heavy equipment and trucks. Maintain barricades in good condition. <br />When called for in the Contract Documents, install root barriers or fabrics in accordance <br />with the details shown. <br />8-13.7 580-7 Pruning. <br />Prune all broken or damaged roots and limbs in accordance with established arboriculture <br />practices. When pruning is completed ensure that all remaining wood is alive. Do not reduce the <br />size or quality of the plant below the minimum specified. <br />8-13.8 580-8 Mulching. <br />Uniformly apply mulch material, consisting of wood chips (no Cypress Mulch is <br />allowed), pine straw, compost, or other suitable material approved by the Engineer, to a <br />minimum loose thickness of 3 inches over the entire area of the backfilled hole or bed within two <br />days after the planting. Maintain the mulch continuously in place until the time of final <br />inspection. . <br />8-13.9 580-9 Disposal of Surplus Materials and Debris. <br />Dispose of surplus excavated material from plant holes by scattering or otherwise as <br />might be directed so that it is not readily visible or conspicuous to the passing motorist or <br />pedestrian. Remove all debris and other objectionable material from the site and clean up the <br />entire area and leave it in neat condition. <br />8-13.10 580-10 Contractor's Responsibility for Condition of the Plantings. <br />Ensure that the plants are kept watered, that the staking and guying is kept adjusted as <br />necessary, that all planting areas and beds are kept free of weeds and undesirable plant growth <br />and that the plants are maintained so that they are healthy, vigorous, and undamaged at the time <br />of acceptance. <br />8-13.11580-11 Plant Establishment Period. <br />If the Contract Documents designate a Plant Establishment Period, assume responsibility <br />for the proper maintenance, survival and condition of all landscape items during such period at <br />no additional cost. <br />01025-47 Technical Specifications <br />F \Public Works\ENGINEERING DIVISION PROJECTS\1503-43rd Ave Swk_Airport Dr to 41st St\1-Admin\Bids\Bid <br />Documents\Master Contract Documents\Technical Specifications.doc <br />