647HUMUS

New Hampshire Department of Transportation Standard Specifications – 2016 Description

1.1This work shall consist of salvaging humus material encountered in the work or furnishing humus material from other sources,

and placing the material at the locations shown on the plans or ordered. Materials

2.1Humus shall be the surface layer of natural workable soil containing organic matter, or material of a generally humus nature

capable of sustaining the gro wth of vegetation, with no admixtures of refuse or material toxic to plant growth. It shall be free of all viable parts of prohibited invasive plants listed in Table 3800.1 of Part AGR 3800 and relatively free from stones, lumps, stumps or similar objects larger than 2 ” in greatest diameter, sterile soil, roots, and brush. Ordinary sods of herbaceous growth such as grass and non-noxious weeds will be permitted. Muck, dry enough to be properly measured and spread may be used if it meets the above requirements, but the Engineer reserves the right to prohibit the use of muck which he considers may be or may become a fire hazard. If muck is accepted, extra limestone, sand, or humus material, shall be added as ordered by the Engineer. Construction Requirements

3.1The material shall be spread over the properly prepared areas to give a covering which will b e approximately 3-1/2” thick,

with generally not less than 3” or more than 4”, measured normal to the slope. Method of Measurement

4.1Humus material will b e measured by the cubic yard. Slope measurements will be taken of the lengths and widths of the

material in place and the volume will be computed by using the nominal depth of 3-1/2”. Basis of Payment

5.1The accepted quantity of humus will be paid for at the Contract unit price per cubic yard complete in place.

5.1.1 Excavation required to undercut slopes in order to accommodate the material will be subsidiary. Pay item and unit:

647.1Humus Cubic Yard

New Hampshire Department of Transportation Standard Specifications – 2016

Description

This work shall consist of furnishing and placing live grass sod, including sod gutters, as shown on the plans or ordered. This

work shall also include any excavation necessary to place the sod. Materials

Sod shall consist of an approved, dense, vigorous, well-rooted growth of commercial turf of perennial grasses indigenous to

the area where it is to be used. 2.1.1 The sod shall be free from viable parts of prohibited invasive plants listed in Table 3800.1 of Part AGR 3800, noxious weeds, annual grasses, large stones or roots, or other materials harmful to growth, or which would interfere with mowing or future maintenance. 2.1.2 The soil shall be of such character that the sod will not break or crumble.

2.2Pegs for holding shall be of sound wood approximately 3/4” square or round, and 8 to 10” long.

Construction Requirements

Sodding seasons. Unless otherwise permitted, sodding shall be done between April 1 and June 1, or between August 15 and

October 15, but not when the ground or sod is frozen.

3.2Cutting sod. The sod shall be cut with an approved sod cutter into strips of uniform width having minimum dimensions of

12 by 18” The sod shall be severed below the root line, shall have a uniform thickness and shall contain the majority of the feeding roots of grasses.

3.3Site Preparation.

3.3.1 Areas to be sodded shall be brought to grade with 4” of loam as shown or ordered, making allowance for the thickness of the sod. 3.3.2 As necessary, the soil shall be harrowed, tilled, or otherwise loosened to a de pth of at least 2 ” to allow for mixing of the soil with the fertilizer and limestone. 3.3.3 The area shall be cleaned of large stones, roots, or other debris which might interfere with laying of the sod.

3.4Laying Sod.

3.4.1 Sod shall be in a moist condition when laid and shall be placed on a reasonably moist bed. The sod shall be carefully placed and tightly fitted edge to edge. Any broken, damaged, or irregular shaped sod will be rejected. 3.4.2 On slopes, the sod shall be laid at right angles to the slope, beginning at the bottom. 3.4.3 Transverse joints shall be staggered, and any unavoidable gaps shall be filled with sod plugs or loam. 3.4.4 All sod shall be tamped with an approved tamper or roller to ensure tight joints and a smooth uniform surface. 3.4.5 The inlet edges of sod in waterways and other edges exposed to water scour shall be turned down and buried to a depth of 3” with tamped earth. 3.4.6 On slopes steeper than 4:1, every other line of sod shall be fastened with wooden pegs spaced 3 ft. apart and driven flush with the surface of the sod. 3.4.7 Single lines of sod for anchoring loam on slopes greater than 4:1 shall be secured as 3.4.6. 3.4.8 After laying, all sod shall be thoroughly watered immediately after rolling, and in the absence of rain repeat every day until the roots have grown into the soil. (Normally rooting requires two to three weeks.)

New Hampshire Department of Transportation Standard Specifications – 2016 Method of Measurement

Sod will be measured along the slope, except that the width of gutters will be as shown on the plans or ordered. D ead sod

will not be measured. Sod will be computed to the square yard. Basis of Payment

The accepted quantity of sod will be paid for at the Contract unit price per square yard complete in place.

5.2Excavation required to complete this work will be considered as incidental to the items, but fertilizer, limestone, and loam

ordered will be paid for under the respective Items. Pay item and unit: 648. Sod Square Yard

New Hampshire Department of Transportation Standard Specifications – 2016

Description

This specification includes general requirements that are applicable to all types of planting, including trees, shrubs, vines and

ground cover plants, irrespective of type. Deviations from these general requirements will be indicated in the specific requirements for each type.

1.2This work a lso includes furnishing and installing landscaping materials, including all layout, fertilizing, soil conditioning,

staking, guying, watering, excavating, weeding, herbicides, fungicides, pesticides, refertilizing as necessary, replanting as needed, and stake and guy removal after the establishment period, as shown on the plans or as ordered. Materials

Plants.

2.1.1 General. 2.1.1.1 Plant material shall meet the current specifications of the “ American Standard for NurseryS tock” as published by the American Association of Nurserymen unless otherwise specified. 2.1.1.2 All plants shall be first class and shall be representative of their normal species or varieties. All plants must have a good, healthy, well-formed upper growth and a large, fibrous, compact root system. 2.1.1.3 All plants shall be nursery grown stock that has been transplanted unless indicated as “ seedlings”, or root pruned at least once every 4 years. Plant hardiness shall be determined acceptable by the Engineer as specified relative to the zone of origin. A sworn affidavit as to region of growth shall be furnished when ordered. 2.1.1.4 Unless otherwise specified, so-called exposed or “ bare-root” material will be accepted. Container grown plants may be furnished in lieu of balled and burlapped plants, provided they meet the current specifications in the American Standard for Nursery Stock. 2.1.1.5 Any non-bid substitution of plant material shall be acceptable only if the bid item(s) is unavailable. Reque sts for plant substitutions and proof of unavailability shall be furnished to the Engineer in writing one month prior to the beginning of the planting season. 2.1.2 Names and Marking. 2.1.2.1 All scientific and common plant names of the items specified sha ll conform with the current edition of “ Hortus Third” compiled by the staff of the L. H. Bailey Hortorium, Cornell University. All plants delivered shall be true to name. 2.1.2.2 Each bundle, or each plant, when not tied in bundles, shall be legibly and properly labeled. Care shall be taken throughout the operation to keep each plant species or variety segregated and labeled. The Engineer may reject at any time a ny plant material of questionable nomenclature. 2.1.3 Inspection. 2.1.3.1 All plants shall b e free from plant diseases and insect pests, and shall comply with all applicable State and Federal laws with respect to inspection for plant diseases and infestations. 2.1.3.2 Plant material may be inspected in the nursery or collecting fields before it is dug. The Contractor shall provide a list of suppliers in sufficient time so the Engineer may inspect nurseries on a timely bases. Approval to move nursery mater ial to the project site shall not be considered as Acceptance. The Contractor shall notify the Engineer not less than 48 hours in advance of delivery of plants. 2.1.3.3 All planting stock shall conform to the laws of New Hampshire and shall be inspected before removal from the nursery, by authorized Federal, State or other authorities as may be required in the area where the nursery is located. The invoice or order for each shipment of plants shall contain the project name and number and the quantity and variety of plant material delivered. An inspection certificate shall certify that the plants are free of disease and insect pests of all kinds and shall accompany each shipment. Disease certificates and delivery slips shall be given to the Engineer upon arrival of the plant material at the point of delivery. 2.1.3.4 For purchase of material fr om nurseries within New Hampshire, information regarding inspection for plant disease and pest infestations is available from the New Hampshire Department of Agriculture. Inspection of plants from outside New Hampshire is controlled by the United States D epartment of Agriculture and information is available from the United States Department of Agriculture, Animal & Plant Health Inspection Service.