City of Frisco Engineering Standards

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Version 6/19/12 PART 3 - EXECUTION 3.01 GENERAL A. All turfing operations are to be executed across the slope, parallel to finished grade contours. 3.02 SOIL PREPARATION A. Contractor shall kill all vegetation prior to soil preparation. B. Tillage: Tillage shall be accomplished to loosen the soil, destroy existing vegetation, and prepare an acceptable seed/sprig/sod bed. All areas shall be tilled with a heavy duty disc or a chisel-type breaking plow, chisels set not more than ten (10”) inches apart. Initial tillage shall be done in a crossing pattern for double coverage, followed by a disc harrow. Depth of tillage shall be five (5”) inches. A heavy duty rototiller may be used for areas to be planted with sod. C. Cleaning: Soil shall be further prepared by the removal of debris, building materials, rubbish, weeds, and stones larger than three-quarters inch ( 3/4") diameter. D. Fine Grading: After tillage and cleaning, all areas to be planted shall be leveled, fine graded, and drug with a weighted spike harrow or float drag. The required result shall be the elimination of ruts, depressions, humps, and objectionable soil clods. This shall be the final soil preparation step to be completed before the commencement of fertilizing and planting. E. Rock Removal: During the soil preparation process, a “Rock Pick” or other approved piece of machinery shall be used to gather surface stones as small as three-quarter (3/4”) inch in diameter. The Contractor shall be responsible for the disposal of collected materials as waste per “Clean Up” Paragraph 3.10. 3.03 FERTILIZING A. Initial Planting Application: The specified fertilizer shall applied at the rate of (18) pounds per one thousand (1,000) square feet (800 pounds per acre). 1. Timing: The initial planting application of fertilizer for seeded/sprigged areas shall be applied after the soil preparation, but not more than two (2) days prior to turfgrass planting. (Fertilizer shall be applied over sodded areas after planting, but not more than two (2) days later.) B. Post Planting Application: Thirty (30) days after planting, turfgrass areas shall receive an application of 21-0-0 or 33-0-0 fertilizer at the rate of nine (9) pounds per one thousand (1,000) square feet (400 pounds per acre). 1. Timing: The Owner or his representative will determine if it is too late in the growing season for the post planting application. In the event that it is, the application shall be made in the spring of the next year, or the cost of the application may become a credit due to the Owner. 2. Post Planting Maintenance: See Paragraph 3.07. Areas without a uniform stand (complete coverage) that must be maintained later than thirty (30) days after the initial planting shall City of Frisco May 2012 Standard Technical Specification Turfgrass Planting 329223-3
Version 6/19/12 3.04 PLANTING: receive subsequent applications of fertilizer, as described above, every thirty (30) days until a uniform stand is achieved. A. Seeding: Following soil preparation and initial fertilizing, apply Bermudagrass seed at the rate of two (2) / three (3) pounds per one thousand (1,000) square feet (90/130 pounds per acre) or ryegrass seed at the rate of eight (8) pounds per one thousand (1,000) square feet (350 pounds per acre). Seed shall be uniformly placed with a Brillion seeder-cultipacker, or the seed shall be broadcast uniformly, followed by rolling with a weighted lawn roller. 1. Timing: Bermudagrass shall not be seeded in planting periods other than the following unless special permission is granted by the Owner: April 15 to June 15, and August 15 to September 15. 2. Hydraulic Mulch (where required): Refer to Public Works Construction Standards, NCTCOG 4 th Edition, Item 202.6.4.4. B. Solid Sodding: Prior to laying the sod, the planting bed shall be raked smooth to true grade and moistened to a depth of four (4”) inches, but not to the extent causing puddling. The sod shall be laid smoothly, tightly butted edge to edge, and with staggered joints. The sod shall be pressed firmly into contact with the sod bed by rolling or by hand tamping with an approved tamper so as to eliminate all air pockets, provide a true and even surface, and insure knitting without displacement of the sod or deformation of the surfaces of sodded areas. Following compaction, fine screened soil of good quality shall be used to fill all cracks between sods. Excess soil shall be worked into the grass with suitable equipment and shall be well watered. The quantity of fill soil shall be such that it will cause no smothering of the grass. 3.05 PROTECTION: No heavy equipment shall be moved over the planted lawn area unless the soil is again prepared, graded, leveled, and replanted. It will be the responsibility of this Contractor to protect all paving surfaces, curbs, utilities, plant materials, and any other existing improvements from damage. Any damages shall be repaired or replaced at no cost to the Owner. This Contractor will also locate and stake all irrigation heads, valve risers, etc., prior to beginning any soil preparation work. 3.06 ESTABLISHMENT AND ACCEPTANCE: Regardless of unseasonable climatic conditions or other adverse conditions affecting planting operations and the growth of the turfgrass, it shall be the sole responsibility of the Contractor to establish a uniform stand of turfgrass as herein specified. When adverse conditions such as drought, cold weather, high winds, excessive precipitation, or other factors prevail to such an extent that satisfactory results are unlikely, the Owner may, at his own discretion, stop any phase of the work until conditions change to favor the establishment of turfgrass. 3.07 POST-PLANTING MAINTENANCE: Contractor shall begin maintenance immediately after each portion of grass area is planted. All planted areas will be protected and maintained by watering, weed control, and replanting as necessary for at least thirty (30) days after initial planting and for as much longer as necessary to establish a UNIFORM STAND WITH COMPLETE COVERAGE OF THE SPECIFIED GRASS. It is anticipated that a minimum of one (1) mowing will occur before the grass areas are acceptable to the Owner. Only those areas which are not completely covered with the specified grass at the end of thirty (30) days will continue to be replanted and maintained by the Contractor until complete coverage and City of Frisco May 2012 Standard Technical Specification Turfgrass Planting 329223-4
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City of Frisco Engineering Standards

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