100 general provisions
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661.01 Description 661.02 Plant Materials 661.03 Labeling 661.04 Inspection 661.05 Location and Source of Supply 661.06 Scheduling 661.07 Transportation, Storage, and Handling 661.08 Layout of Plant Materials 661.09 Planting Holes 661.10 Planting Beds 661.11 Backfill Mix 661.12 Planting 661.13 Mulch 661.14 Pruning 661.15 Wrapping 661.16 Bracing 661.17 Period of Establishment 661.18 Removal of Stakes and Wrapping 661.19 Method of Measurement 661.20 Basis of Payment 661.01 Description. This work consists of furnishing and planting trees, shrubs, vines, and other materials. 661.02 Plant Materials. Plant materials include all trees, shrubs, vines, and plants required for the project. Ensure that all plant materials conform to the current edition of the American Standard for Nursery Stock, as published by the American Nursery and Landscape Association. Ensure that all plants are healthy representatives, typical of their species or variety, and exhibit a normal habit of growth. Ensure that all plants are hardy under climatic conditions and grow in the same hardiness zone or colder as the one in which the project is located. 661.03 Labeling. Attach legible labels to all specimens, or boxes, bundles, and other containers, indicating detailed information covering the botanical genus and the species name, the common name, the size or age of each species or variety, and the quantity contained in the individual bundles, boxes, and bales. Remove all labels before the completion of the establishment period. 661.04 Inspection. The Engineer will inspect and seal all plant materials on the project site with Department seals before use or planting. The Engineer will inspect all plants to ensure they are healthy, vigorous, and free from harmful defects, decay, disfigured stems and roots, plant diseases, and insect pests. The Department will give final acceptance of all plant materials only after the materials are planted and have met all the requirements of this item. Remove the Department seals from the plant materials after the final inspection. 661.05 Location and Source of Supply. Supply the Engineer with complete and detailed information concerning the source of supply for each item of required plant material within 15 days after receiving the notice of award of the Contract. 661.06 Scheduling. Dig and plant all plants after September 15 and before June 1. Plant replacement plants after September 15 and before June 1. Water according to Item 662. 661.07 Transportation, Storage, and Handling. Transport all plants from nursery sources to the project site with the entire load completely covered for protection from drying winds. Thoroughly water all plants that cannot be immediately planted so as to keep the roots continually moist. The Engineer may reject plants that are not adequately protected during transportation and storage. Handle all plant materials by the root ball or container. 661.08 Layout of Plant Materials. Before digging, use suitable staking to lay out the locations of all planting holes and beds. Obtain the Engineer’s approval of these locations before digging. 661.09 Planting Holes. Dig planting holes that have sloped side walls ‘bowl shaped’. Slopes of the side walls shall have a minimum of 1:1 side slopes. The top of the planting holes shall be two times the diameter of the root ball. Planting holes shall be dug to the same depth as the root ball structure. The earth under root balls shall be compacted or unexcavated soil to prevent settlement. See 661.12 for depth of planting. Dig planting holes for vines and perennials to a minimum depth and diameter of 6 inches (150 mm). Make planting holes for rooted cuttings and tree seedlings large enough to accommodate the root system.
Before planting, top dress all planting beds with a minimum of 2 inches (50 mm) of backfill mix, then cultivate it to a depth of 6 inches (150 mm) using a plow, disc, or roto-tiller. 661.11 Backfill Mix. For all plantings, use backfill mix consisting of the following: A. One part excavated soil. B. One part sphagnum peat moss, shredded pine bark, or EPA rated Class IV compost. C. One part sand. D. A slow release commercial fertilizer (0-20-20 or equal) added at a rate of 5 pounds per cubic yard (3 kg/m3) to the backfill mix. Do not use backfill mix in a frozen or muddy condition. Mix backfill on the project site. 661.12 Planting. A. Planting Trees & Shrubs: Set each plant in the center of the planting hole, plumb, and straight at a level such that the top of the root structure (i.e., trunk flare or root collar) is 1 inch (25 mm) above the surrounding soil. Prior to backfilling the hole, remove all twine, bags, and roping. For trees shipped with wire baskets supporting the root structure, remove the top two-third of the wire basket from root balls. Remove all rot-proof burlap. Remove or fold down the top one-third of standard (biodegradable) burlap. Great care must be taken to not separate the soil of the root ball from the plants root system. Circling roots shall be cut or removed prior to planting. Backfill the planting hole with the backfill mix. Fill the hole gradually and settle the backfill with water to the top of the root structure. Do not place backfill mix in direct contact with the trunks or stems. Add backfill mix around the root structure so that the edges of the root structure are covered by a minimum of 12 inches (300 mm). Do not plant groundcovers, vines, or perennials closer than 12 inches (300 mm) to tree trunks and shrub stems or within 6 inches (150 mm) of the edge of planting beds. Locate Trees and Shrubs as specified in the plan. B. Planting Seedlings, Groundcovers, Vines or Perennials: For planting seedlings, groundcovers, vines, or perennials in a planting bed see 661.10. Prior to planting seedlings, groundcovers, vines, or perennials in existing turf, remove all grass and weeds by scalping an area that has a minimum diameter of 12 inches (300 mm). Plant seedlings or perennials in the center of the scalped area using a spade or planting bar. Locate Seedlings, Groundcovers, Vines or Perennials as specified in the plan.
After mulching and before watering, add a slow release commercial fertilizer (12-12-12 or equal), in granular form, to the top of the mulch at a rate of 5 pounds per 100 square feet (0.25 kg/m2). Do not allow the fertilizer to contact the stems, trunk, branches, or leaves of the plants. Water thoroughly as per 661.17.
During the period of establishment, follow standard horticultural practices to ensure the vigor and growth of the transplanted material. Water, remulch, restake, and cultivate as necessary. Perform at least two weeding and mowing programs (around trees, shrubs, and bed edges) of such intensity as to completely rid the planted and mulched areas of weeds and grasses. Begin the first program on or about June 15 and the second approximately 8 weeks later. On or about September 15, the Engineer will inspect the planting and supply the Contractor with a list of plants that have fallen over or are tilted from plumb, missing or, dead; and those that have died back beyond normal pruning lines. Replant as required according to the specifications of the original material. Replacement plants are subject to a new period of establishment. Immediately replace plants planted initially in the fall that have died before the spring planting season. Care for the replacement plants during the new establishment period.
At the end of the establishment period, the Department will make the final inspection and determine the actual number of living plants. The Department will pay an additional 20 percent of the bid price for all plants living at the end of the establishment period. The Department will not pay the additional 20 percent payment for plantings that did not survive the establishment period. Replace all plants not surviving the establishment period at no additional cost to the Department. The Department will extend the establishment period for all replacement plantings with no additional payment. The Department will pay for accepted quantities at the contract prices as follows:
661 Each Tree Seedling, (Size), (Species) 661 Each Perennials, (Size), (Species) 661 Each Groundcover and Vines, (Size), (Species) 661 Each Deciduous Shrub, (Size), (Species) 661 Each Evergreen Shrub, (Size), (Species) 661 Each Deciduous Tree, (Size), (Species) 661 Each Evergreen Tree, (Size), (Species) ITEM 662 Landscape Watering 662.01 Description 662.02 Watering 662.03 Method of Measurement 662.04 Basis of Payment 662.01 Description. This work consists of furnishing, delivering, applying, measuring, and scheduling a sufficient amount of water necessary to keep each plant included in Item 661 in a healthy growing condition throughout the period of establishment and the Contract. 662.02 Watering. Furnish the water used in watering landscape plants. Thoroughly water all plant material at the time of planting regardless of soil moisture content. Continue to water throughout the period of establishment. Saturate the root zone and mulched area of each plant without causing run-off according to Table 662.03-1. During fall planting, continue to water until the ground is frozen and recommence watering after the spring thaw. Furnish a rain gauge approved by the Engineer. 662.03 Method of Measurement. The Department will measure Landscape Watering by the number of gallons (liters) delivered to plants from approved metered tanks or individually measured containers as follows: Table 662.03-1 Watering Table
662.04 Basis of Payment. The Department will pay for the accepted quantities at the contract price as follows: Item Unit Description 662 Gallon (Liter) Landscape Watering ITEM 666 PRUNING EXISTING TREES 666.01 Description 666.02 Wound Dressing 666.03 Pruning 666.04 Painting 666.05 Removal of Foreign Materials from Trees 666.06 Removal of Rubbish 666.07 Method of Measurement 666.08 Basis of Payment 666.01 Description. This work consists of pruning trees. 666.02 Wound Dressing. Use approved material specifically manufactured for tree wound dressing. 666.03 Pruning. Prune all trees to make them shapely, typical of the species, using standard drawings on the plans as a guide. Use approved pruning tools and methods. Remove all dead wood and dead branches 1 inch (25 mm) or more in diameter. Remove all branches interfering with or hindering the healthy growth of the tree with a good clean cut made flush with the parent trunk. Remove all diseased branches. For branches that may be partly dead, yet have a good healthy lateral branch between the dead part and the base, cut off the branch with a good clean slanting cut close to and beyond the healthy lateral branch. Remove low hanging, unsound, or unsightly branches on trees or shrubs designated to remain. Remove all branches or growth interfering with the free traffic movement on the highway. Trim branches of trees extending over the roadbed to provide a clear height of 20 feet (6 m) above the roadbed surface. Cut off all stubs or improper cuts resulting from former pruning or limbs that have been broken flush with the trunk or limb of the tree in order to ensure proper healing. 666.04 Painting. Paint all cuts or wounds measuring 1 inch (25 mm) or more in diameter and all exposed wood and scars resulting from previous work or damage with approved tree wound dressing. 666.05 Removal or Foreign Materials from Trees. Remove all nails, spikes, bolts, wire, or other foreign materials driven into or fastened to the trunk or branches of the tree, or, if directed by the Engineer, cut them flush with the bark of cambium layer to ensure complete healing over. 666.06 Removal of Rubbish. Legally use, burn, or dispose of all material according to 105.16 and 105.17. 666.07 Method of Measurement. The Department will measure Pruning Existing Trees by the number of each size, completed and accepted. 666.08 Basis of Payment. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 666 Each Pruning Existing Trees, 3 to 8-inch (80 to 200 mm) Diameter 666 Each Pruning Existing Trees, 8 to 16-inch (200 to 400 mm) Diameter 666 Each Pruning Existing Trees, 16 to 24-inch (400 to 600 mm) Diameter 666 Each Pruning Existing Trees, 24 to 36-inch (600 to 900 mm) Diameter 666 Each Pruning Existing Trees, 36 inches (900 mm) and Over ITEM 670 EROSION PROTECTION 670.01 Description 670.02 Materials 670.03 Construction 670.04 Maintenance 670.05 Method of Measurement 670.06 Basis of Payment 670.01 Description. This work consists of furnishing, placing, and maintaining slope, ditch, and vegetated swale erosion protection as shown on the plans. 670.02 Materials. Furnish materials conforming to: Sodding 660.02 Erosion Control Mats 712.11
670 Square Yard Slope Erosion Protection (Square Meter) 670 Square Yard Ditch Erosion Protection (Square Meter) 670 Square Yard Vegetated Swale Erosion Protection (Square Meter) 670 Square Yard Slope Erosion Protection Mat Type __ (Square Meter) 670 Square Yard Ditch Erosion Protection Mat Type __ (Square Meter) 670 Square Yard Vegetated Swale Erosion Protection (Square Meter) Mat Type ____ ITEM 671 erosion control Mats 671.01 Description 671.02 Materials 671.03 Construction 671.04 Maintenance 671.05 Method of Measurement 671.06 Basis of Payment 671.01 Description. This work consists of furnishing, placing, and maintaining Types A through I erosion control mats. This work also consists of furnishing, placing, and maintaining seeding and mulching when the seeding and mulching is to be held in place with erosion control mats. 671.02 Materials. Furnish materials conforming to: Seed and Mulch 659 Lime and Fertilizer 659 Erosion Control Mats 712.11 If the mat type is not specifically itemized, furnish any mat type listed in 712.11. Furnish staples consisting of 12-inch (0.3 m) No. 11 gage steel wire bent into narrow U-shape with the ends of the staples approximately 1 inch (25 mm) apart producing a 6 inch staple or furnish pins conforming 18 inch (450 mm) long, ¼ inch [4.5mm] in diameter, with attached 1½ inch (38 mm) washer. Drive staples until the staple is flush with the ground surface. Drive pins until the attached washer is flush with the ground surface. For clay, shale, and other heavy soils, furnish 3-inch (75 mm) steel staples, No. 9 gage or thicker with points approximately 1 inch (25 mm) apart, as required by the Engineer.
1. Within 48 hours after seeding and before placing the mat, evenly place mulch over the specified area at the following rates: a. For straw mulch, use 30 percent of the rate specified in 659.14. b. For wood fiber mulch, use 30 percent of the rate specified in 659.15. c. For compost, use the same rate as specified in 659.16. d. Asphalt emulsion tack or tackifier is not required. 2. Immediately after mulching, lay the mat strips flat, loose, parallel to the flow of water, and with the mat contacting the ground at all points. For mats placed in ditches, start the construction at the down stream end. 3. Where more than one strip is required to cover the area, overlap the strips at least 4 inches (100 mm). Overlap the ends at least 6 inches (150 mm) with the upgrade strip on top. 4. Place upgrade slots at the upgrade end of each strip of mat by placing a tight fold of the mat at least 6 inches (150 mm) vertically into the soil. Firmly tamp the soil against the end and staple the mat. If directed by the Engineer, bury other edges exposed to more than normal flow in a similar manner. 5. Place end slots between the ends of strips by placing a tight fold of the mat at least 6 inches (150 mm) vertically into the soil. Firmly tamp the soil and staple the mat. 6. Place check slots by placing a tight fold of the mat at least 6 inches (150 mm) vertically into the soil. Firmly tamp the soil and staple the mat. Space check slots so that one check slot or an end slot occurs within each 50 feet (15 m) of slope for slopes 3 to 1 or steeper. 7. Bury the edges of the mat where the mat abuts catch basins and other structures. 8. Secure the mat in place with staples driven vertically into the soil. Do not stretch or draw the mat taut during the stapling operation. Install three rows of staples for each strip of mat, with one row along each edge and one row alternately spaced in the middle. Space staples not more than 3 feet (1 m) apart in each row. Staple all upgrade slots, end slots and check slots across the width, with staples spaced not more than 6 inches (150 mm) apart. 9. After completing the mat installation, seed over top of the mat in areas that the Engineer identifies as disturbed. Use a seed mixture conforming to Item 659 at the rate of 1 pound per 1000 square feet (5 g/m2) or with a mixture or rate shown on the plans. Yüklə 7,65 Mb. Dostları ilə paylaş:
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