SECTION 32 92 23
SODDING
Based OnDFD Master Specification Dated 07/26/2017
This section has been written to cover most (but not all) situations that you will encounter. Depending on the requirements of your specific project, you may have to add material, delete items, or modify what is currently written. The Division of Facilities Development expects changes and comments from you.
PART 1 - GENERAL
SCOPE
Work includes sodding and maintenance. Furnish all labor, material and equipment necessary to perform the sodding and related work as indicated on the drawings.
PART 1 – GENERAL
Scope
Related Work
Delivery, Storage and Handling
Planting Conditions
Guarantee
PART 2 – PRODUCTS
Sod
Fertilizer
Water
PART 3 – EXECUTION
Preparation
Sodding
Fertilizing
Cleaning
Completion and Repair
Inspection
Maintenance
RELATED WORK
Applicable provisions of Division 1 govern work under this Section.
32 92 19 - Soil Preparation
00 00 00 – (Section Title)
DELIVERY, STORAGE AND HANDLING
Protect sod from sun, wind and dehydration during transport to site.
Deliver fertilizer to the site in original, sealed containers, and store in a waterproof space. Place Provide the manufacturer’s name, analysis, trademark and guarantee as per standards of the Wisconsin Department of Agriculture on the containers.
PLANTING CONDITIONS
Do not Install sod when the air temperature is above 95OF (35OC) or below 40OF (4.4OC).
GUARANTEE
Guarantee in writing that the sod be properly approved and/or certified, uniform in appearance and quality, and free of visible imperfections prior to and after installation.
PART 2 - PRODUCTS
SOD
Provide Highland type, nursery-grown sod of dense growth, with a strong, fibrous root system, and shall be composed of at least seventy-five (75) percent Kentucky Bluegrass, mixed with fescue and perennial rye grasses, and free of pernicious weeds. Cut the sodat a length of approximately 2” (5.1 cm), and rake the sod free of debris.
Install standard sections of sod of enough strength to support their own weight and to retain their size and shape when held within its upper ten (10) percent and suspended vertically.
Fertilizer
Use a granular, non-burning product composed of not less than fifty (50) percent organic slow-acting, guaranteed analysis professional fertilizer. Fertilizer shall conform to Wisconsin State Statutes, Section 94.64.
Commercially available type ‘B’ top-dressing fertilizer shall be composed of 20% nitrogen, 5% phosphoric acid, and 20% potash, unless directed otherwise by prior soil test.
Water
Maintain adequate water supplies suitable for irrigation and free of harmful materials.
PART 3 - EXECUTION
PREPARATION
Loosen the soil surface by equipment or hand methods to a reasonably fine granular texture, and to a depth of not less than 1”. The surface shall be lightly and uniformly watered to the loosened depth prior to installation.
Apply commercial fertilizer at a rate of 1 lb. per 1,000 sq. ft., and lightly rake into the soil.
SODDING
Install sod at the finish grade(s) specified on a surface prepared and finished to an even, loose and uniform surface.
Harvest, deliver, cut, and laysod within a 24-hour period. Harvested sod not installed within this time period may still be used if examined and approved by Owner prior to installation.
Machine-cut sod at a uniform ¾” soil thickness plus or minus 1/4” (excluding top growth and thatch). Cut the sod in uniform commercial-sized strips, with no partial strip smaller than 18” x 24”. Broken pads and torn or uneven ends are unacceptable, as is sod harvested by the supplier under drought conditions.
Lay sod with the first row in a straight line, and with subsequent rows placed parallel to the first and tight against one another. Stagger lateral joints. The overlapping of sections and spaces between joints are both unacceptable. Sod sections are not to be stretched.
On slopes greater than 1:4, install sod perpendicular to the slope, with staggered joints, and secure with wooden stakes of 6” minimum length, driven plumb to the soil portion of the sod, and spaced along the longitudinal length of the sod strip, between 18” and 36” apart. Once sod is rooted, remove or drive stakes into ground.
Immediately roll newly sodded sections to remove minor depressions and irregularities, and to eliminate air pockets. The roller is to weigh no more than 150 lbs. per linear foot of roller width.
Lightly water newly sodded sections during installation. Following rolling, water sections thoroughly enough to dampen the subsoil to a depth of 4”. Moderately water sodded areas daily, without allowing the subsoil to be waterlogged, until Owner acceptance.
FERTILIZING
Perform all chemical applications in accordance with current federal, state and local laws, through EPA-registered materials and application techniques, and performed under the supervision of a licensed certified applicator.
Apply type ‘B’ fertilizer with a mechanical rotary or drop-type distributor approximately thirty (30) days after sodding, at a rate equal to 1 lb. per 1,000 sq. ft., and thoroughly water into the soil.
CLEANING
Promptly remove waste and excess material from the seeding operation. Clean adjacent paved areas, and repair any damage to existing adjacent turf areas.
COMPLETION & REPAIR
Perform all necessary weeding, mowing and trimming, and shall replace any section larger than 1 sq. ft. (0.09 sq. m.) that is bare or otherwise damaged. Mow grass to a height of 2-1/2” at least twice prior to acceptance.
INSPECTION
Submit a written request to the Architect/Engineer or DFD Construction Representativeat least five (5) working days prior to the desired date for an inspection all areas of installed sodat the conclusion of the contracted maintenance period. The condition of the sodded areas, including any instances of settlement, washouts, tire damage, and etcetera and determine whether the maintenance period shall be extended. The Contractor will be notified of acceptance.
Verify maintenance watering and mowing requirements based on project specific conditions.
MAINTENANCE
Fertilizing: Fertilize sodded areas in early spring at a rate equivalent to 1/2 lb. per 1,000 sq.ft. (0.24 kg/100 sq. m.).
Watering: Water sodded areas thoroughly every 2 to 3 days, as required in the absence of rain.
Mowing: Mow cool season grasses, such as bluegrass, tall fescue, perennial ryegrass, and etcetera to a height of 2-1/2” in spring and fall, and no less than 3” from June through September. Maintain heights through repeat mowings as needed during the length of the contract.
Remove no more than forty (40) percent of grass leaf during any single mowing operation.
Include trimming around obstacles and the raking of excess grass clippings in the mowing operation. Do not use weed eaters around tree trunks.
Maintenance shall be the responsibility of the contractor until substantial completion is issued.
END OF SECTION
DFD Project No.
32 92 23 -1