646TURF ESTABLISHMENT

New Hampshire Department of Transportation Standard Specifications – 2016 Description

1.1This work shall consist of preparing the soil and furnishing and applying seed of the type or types specified, fertilizer,

limestone, and mulch if required, on all areas designated for turf establishment as shown on the plans or ordered.

1.2This work shall also consist of furnishing and placing humus or loam as specified in the item description.

Materials

2.1Limestone shall conform to 642.2.

2.2Fertilizer shall be that for initial fertilization and shall conform to 643.2.

2.3Seed shall conform to 644.2 using the type of mixture(s) ordered.

2.4Mulch shall conform to 645.2.1.

2.5Mulch tackifiers shall conform to 645.2.6 and be environmentally non-toxic.

2.6Humus shall conform to 647.2.

2.7Loam shall conform to 641.2.

Construction Requirements

3.1Construction requirements shall conform to 641.3, 643.3, 644.3, 645.3 and 647.3.

3.2Application rate of limestone shall generally be 130 po unds per 1,000 square feet, approximately 3 tons per acre, unless

otherwise ordered.

3.3Mulch tackifiers shall be used as a tie-down or adhesive for mulch, it shall be used at the rate specified by the manufacturer,

and applied uniformly over and through the mulch. Method of Measurement

4.1Turf establishment of the type specified will be measured by the acre or the square yard to the nearest 0.01 of an acre or

nearest square yard from measurements taken on the ground surface covered.

4.2Turf establishment (F) of the type specified will not be measured, but shall be the square yard final pay quantity in accordance

with 109.11 for the area within the limits shown on the plans. Basis of Payment

5.1The accepted quantities of turf establishment of the type specified will be paid for at the Contract unit price per acre or square

yard complete in place.

5.2Turf establishment (F) of the type specified are final pay quantity items and will be paid for at the Contract unit pric e per

square yard in accordance with 109.11.

5.3The material cost of crownvetch seed ordered by the Engineer added to slope seed type specified in the plans will be paid for

in accordance with 109.04. Pay items and units:

646.3Turf Establishment with Mulch and Tackifiers Acre

646.31Turf Establishment with Mulch and Tackifiers Square Yard

1 Turf Establishment with Mulch and Tackifiers (F) Acre

2 Turf Establishment with Mulch and Tackifiers (F) Square Yard

646.4Turf Establishment with Mulch, Tackifiers and Humus Acre

646.41Turf Establishment with Mulch, Tackifiers and Humus Square Yard

1 Turf Establishment with Mulch, Tackifiers and Humus (F) Acre

2 Turf Establishment with Mulch, Tackifiers and Humus (F) Square Yard

646.5Turf Establishment with Mulch, Tackifiers and Loam Acre

646.51Turf Establishment with Mulch, Tackifiers and Loam Square Yard

1 Turf Establishment with Mulch, Tackifiers and Loam (F) Acre

2 Turf Establishment with Mulch, Tackifiers and Loam (F) Square Yard

New Hampshire Department of Transportation Standard Specifications – 2016

Description

This 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

Humus 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

The 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

Humus 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

The 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