Quinnipiac_River_Park_Improvements_-_Specifications.pdf

City of New Haven Quinnipiac River Park Improvements Contract Specifications

Table of Contents Quinnipiac River Park Improvements Contract Specifications

MATERIALS OF CONSTRUCTION

Section 2.01 - DEFINITIONS

Section 2.02 STONE AND GRAVEL

Section 2.03 BITUMINOUS CONCRETE PAVING MIXTURES

Section 2.03 BITUMINOUS CONCRETE PAVING MIXTURES

Section 2.07.01 CONCRETE CLASS “B” AE CONCRETE MIXTURE FOR FLATWORK

Section 7.03 RIPRAP

Section 20.02 PROCESSED AGGREGATE BASE AND PAVEMENT

20.02.1 DESCRIPTION

20.02.2 MATERIALS

20.02.3 CONSTRUCTION METHODS

20.02.4 METHOD OF MEASUREMENT

20.02.5 BASIS OF PAYMENT

Section 20.08 UNCLASSIFIED EXCAVATION

20.01.01 DESCRIPTION

20.08.2 MATERIALS

20.08.3 CONSTRUCTION METHODS

20.08.4 METHOD OF MEASUREMENT

20.08.5 BASIS OF PAYMENT

Section 50.01 LOAMING, SEEDING AND SODDING

50.01.1 DESCRIPTION

50.01.2 MATERIALS

50.01.3 CONSTRUCTION METHODS

50.01.4 METHOD OF MEASUREMENT

50.01.5 BASIS OF PAYMENT

Section 50.02 FURNISH AND PLACE TOPSOIL

MATERIALS OF CONSTRUCTION

Section 2.01 - DEFINITIONS

2.01.01 ABBREVIATIONS

Abbreviations used in the contract are in lieu of and are to be construed the same as the respective expression represented below.

(A) A.A.S.H.T.O. American Association of State Highway and Transportation Officials

(B) A.C.I. American Concrete Institute

(C) A.I.S.C. American Institute of Steel Construction

(D) A.S.A. American Standards Association

(E) A.S.T.M. American Society of Testing Materials

(F) A.W.P.A. American Wood Preservers Association

(G) A.W.S. American Welding Society

(H) A.W.W.A. American Water Works Association

(I) C.H.D. State of Connecticut State Highway Department Standard Specifications for Roads, Bridges, and Incidental Construction.

(J) D.F.P.A. Douglas Fir Plywood Association

(K) S.P.A. Southern Pine Association

(L) W.C.L.A. West Coast Lumberman's Association

(M) W.R.I. Wire Reinforcement Institute

(N) O.S.H.A. Occupational Safety and Health Administration

(O) DOT Form 818 Standard Specifications for Roads, Bridges and Incidental Construction

2.01.02 STANDARD SPECIFICATIONS

Whenever any reference is made to a standard of any agency, authority or association, it shall mean the latest standard or tentative standard of the agency, authority, or association as to materials, testing procedures, inspection or other specification pertaining to any or all phases of the work, whichever is applicable.

Section 2.02

STONE AND GRAVEL

Stone, gravel, gravel fill, subbase, gravel base, pervious structure backfill, free draining material, and crusher-run stone shall be in total and complete conformance with the requirements of the "Connecticut Department of Transportation Standard Specifications for Roads, Bridges, and Incidental Construction, Form 818 or the most current edition, Division III, Materials Section M.01 Aggregates and Section M.02 Granular Fill, Subbase, Granular Base And Surfaces, Stone Base, Pervious Structure Backfill, Free-Draining Material, Crusher-Run Stone."

Section 2.03

BITUMINOUS CONCRETE PAVING MIXTURES

Bituminous concrete paving mixtures shall be in total and complete conformance with the requirements of the "Connecticut Department of Transportation Standard Specifications for Roads, Bridges, and Incidental Construction, Form 818 or the most current edition, Division III, Materials Section, Section M.04 Bituminous Concrete Materials."

Section 2.03

BITUMINOUS CONCRETE PAVING MIXTURES

Bituminous concrete paving mixtures shall be in total and complete conformance with the requirements of the "Connecticut Department of Transportation Standard Specifications for Roads, Bridges, and Incidental Construction, Form 818 or the most current edition, Division III, Materials Section, Section M.04 Bituminous Concrete Materials."

Section 2.07.01

CONCRETE CLASS “B” AE CONCRETE MIXTURE FOR FLATWORK

Portland cement concrete shall be in conformance with the requirements of the Connecticut Department of Transportation Standard Form 818 Materials Section M.03, and adhere to the mix design proportions and data below.

MATERIAL DATA

Material Source/Type Specific Gravity

Unit Weight % Absorption

Water Domestic supply 1.00

Cement LaFarge 3.15

Slag LaFarge Newcem 2.93

Flyash Headwaters 2.42

3/4" Stone ASTM C-33 2.90

1/2" Stone ASTM C-33 2.90

3/8" Stone ASTM C-33 2.90

Concrete Sand ASTM C-33 2.67

Water Reducer ASTM C494 Type A&F

Air Entraining Agent

ASTM C260

Retarder ASTM C494 Type B&D

MIX DESIGN PROPORTIONS

Material Proportions (SSD)

Volume Weight

Water 4.57 Cu. Ft. 285 lb/cy

Cement 2.33 Cu. Ft. 458 lb/cy

Newcem 0.84 Cu. Ft. 153 lb/cy

Flyash 0 Cu. Ft. lb/cy

% Air Entrained 1.35 Cu. Ft. 5.00%

Total Aggregate 17.87 Cu. Ft. 3120 lb/cy

3/4" Stone (lbs,ssd) 4.97 Cu. Ft. 900 lb/cy

1/2" Stone (lbs,ssd) 2.49 Cu. Ft. 450 lb/cy

3/8" Stone (lbs,ssd) 2.49 Cu. Ft. 450 lb/cy

Concrete Sand (lbs,ssd) 7.92 Cu. Ft. 1320 lb/cy

Total 26.96 Cu. Ft. lb/cy

Water Reducer 3.0 oz/cwt 36.0 oz/cy

A.E.A. 0.5 oz/cwt 5.0 oz/cy

Retarder 0.0 oz/cy

Aggregate Percentages

3/4" Stone 27.81%

1/2" Stone 13.93%

3/8" Stone 13.93%

Sand 44.32%

Total 100.00%

Section 7.03

RIPRAP

Riprap shall be in total and complete conformance with the requirements of the "Connecticut Department of Transportation Standard Specifications for Roads, Bridges, and Incidental Construction, Form 819 or the most current edition, Division III, Materials Section, Section M.12.02."

Section 20.02

PROCESSED AGGREGATE BASE AND PAVEMENT

20.02.1 DESCRIPTION

Paving for a pedestrian walkway along the edge of the park. These are to be completed to the Engineer’s standards provided in the plan set. All work to be in compliance with state, federal, and local regulations.

20.02.2 MATERIALS

Processed Aggregate Base and Pavement: The materials for this work shall meet the following requirements:

1. Gradation: Coarse and fine aggregates shall be combined and mixed by approved methods so that the resulting material shall meet the following gradation requirements:

TABLE M.05.01-1

SQUARE MESH SIEVES PERCENT PASSING BY WEIGHT

PASS 2 ½ INCHES 100

PASS 2 INCHES 95-100

PASS ¾ INCHES 50-75

PASS ¼ INCHES 25-45

PASS NO. 40 5-20

PASS NO. 100 2-12

2. Coarse Aggregate: Coarse aggregate shall be either gravel, broken stone or reclaimed miscellaneous aggregate containing no more than 2% by weight of asphalt cement, at the option of the Contractor. When tested by means of the Los Angeles Machine, using AASHTO Method T 96, the coarse aggregate shall not have a loss of more than 50%.

a. If gravel is used for the coarse aggregate, it shall consist of sound, tough, durable particles of crushed or uncrushed gravel or a mixture thereof, free from soft, thin, elongated or laminated pieces, lumps of clay, loam and vegetable or other deleterious substances.

b. If broken stone is used for the coarse aggregate, it shall consist of sound, tough, durable fragments of rock of uniform quality throughout. It shall be free from soft disintegrated pieces, mud, dirt, organic or other injurious material.

c. If the reclaimed miscellaneous aggregate is used for the coarse aggregate, it shall consist of sound, tough, durable fragments of uniform quality throughout. It shall be free from soft disintegrated pieces, mud, dirt, glass, organic or other injurious material.

d. Soundness for Gravel, Broken Stone and Reclaimed Miscellaneous Aggregate: When tested by magnesium sulfate solution for soundness using AASHTO Method T 104, the coarse aggregate shall show a loss of not more than 15% at the end of 5 cycles.

3. Fine Aggregate: The fine aggregate shall be natural sand, stone sand, screenings or any combination thereof. The fine aggregate shall be limited to material 95% of which passes a No. 4 sieve having square openings and not more than 8% of which passes a No. 200 sieve. The material shall be free from clay, loam and deleterious materials.

a. Plasticity: When natural sand is used, the fine aggregate shall conform to the requirements of M.02.06-2.

b. Plasticity: When screenings or any combination of screenings and natural sand or any combination of stone sand and natural sand are used, the following requirements shall apply:

1. When the fraction of the dry sample passing the No. 100 mesh sieve is 6% or less by weight, no plastic limit test will be made.

2. When the fraction of the dry sample passing the No. 100 mesh sieve is greater than 6% and not greater than 10% by mass, that fraction shall not have sufficient plasticity to permit the performing of the plastic limit test, using AASHTO Method T 90.

3. When the fraction of the dry sample passing the No. 100 mesh sieve is greater than 10% by weight, the sample shall be washed; and additional material passing the No. 100 mesh sieve shall be determined by AASHTO Method T 146, except that the No. 100 mesh sieve shall be substituted for the No. 40 mesh sieve where the latter is specified in AASHTO Method T 146. The combined materials that have passed the No. 100 mesh sieve shall not have sufficient plasticity to permit the performing of the plastic limit test using AASHTO Method T 90.

20.02.3 CONSTRUCTION METHODS

Paving Walking Pathway:

8’’ aggregate subbase in accordance with CTDOT Form 818 M.05. Installation of bituminous concrete pavement HMA S0.5 minimum of 2’’ thickness in accordance with CTDOT Form 818 M.04.

20.02.4 METHOD OF MEASUREMENT

Measurement shall be made by the Engineer for the subbase and shall be the area in cubic yards. The area to be measured shall be the actual length times the width as shown on the drawings time the required 8” thickness, within the pay limits as shown on the plans.

Measurement shall be made by the Engineer for the walking loop path pavement and shall be in tons.

The area to be measured shall be the actual length times the width as shown on the drawings times the required 2” thickness, converted to tons, within the pay limits as shown on the plans.

20.02.5 BASIS OF PAYMENT

Payment for the installation of subbase for new walking loop path will be made at the contract unit price per Cubic Yard for "Installation of processed aggregate subbase" which price shall include all equipment, tools and labor necessary for installation of all subbase.

Payment for the installation of pavement for new walking loop path will be made at the contract unit price per ton for "Installation of bituminous concrete pavement HMA S0.5" which price shall include all equipment, tools, and labor necessary for installation of all pavements.

Pay Item Pay Unit

Installation of processed aggregate subbase Cubic Yard Installation of bituminous concrete pavement HMA S0.5 Ton

Section 20.08

UNCLASSIFIED EXCAVATION

20.01.01 DESCRIPTION

Unclassified excavation shall consist of the removal and satisfactory disposal, in the manner herein required, of all material other than water taken from within the limits of the work contracted for, the removal of which is necessary for the construction of the embankment, subgrade, shoulders, slopes, entrances, gutters and other miscellaneous construction, to the dimensions and limits shown on the plans or as ordered by the Engineer. It shall also include the disposal of surplus or unsuitable material.

20.08.2 MATERIALS

NOT APPLICABLE

20.08.3 CONSTRUCTION METHODS

Unclassified excavation shall be made in conformity with the requirements of the plans. The slopes of earth cuts shall be smooth, neat and true to the lines given or as directed.

Stumps, trees, sod, weeds and material that will not compact under rolling shall not be placed in embankments, but shall be disposed of as directed by the Engineer.

Placement of Excavated Material: Except as specifically provided elsewhere herein, suitable material removed from the excavation shall be used as directed in the formation of embankments, subgrade, shoulders, etc., and at such other places as may be required.

When embankments are to be constructed on existing slopes steeper than 1 vertical to 3 horizontal, the slope of the existing ground on which the embankment is to be placed shall be plowed deeply or cut into steps before the filling is begun.

Embankments are to be constructed of earth, rock or a mixture of earth and rocks, deposited in successive layers for the full width of the embankment. Except, as herein after permitted, the depth of each layer shall not be more than 12 inches before compaction. Each layer shall be leveled off by the use of blade graders or bulldozers with adequate power for the work involved. The entire area of each layer shall be compacted by distributing the hauling over the area, by the use of tread type equipment, by power rollers weighing not less than 10 tons, or by other mechanical means satisfactory to the Engineer.

Compactions shall be continued until each layer is thoroughly consolidated for its full width. The dry density of each layer after compaction shall not be less than 90 percent of the dry density achieved by the A.A.S.H.O. Method T-99 for that soil. Depending on the material and weather conditions, it may be necessary to supplement mechanical compaction methods by control of moisture in the material.

No stone over 5 inches in its greatest dimensions shall be placed within 12 inches of the subgrade. The subgrade shall be the bottom of the pavement base course.

Surplus Excavated Material: All surplus excavated material shall be used as required to uniformly widen embankments, to flatten slopes, to fill low places in the right-of-way, or for such other purposes as the Engineer may direct. Any surplus or unsuitable material not required, or permitted to be used for such purposes shall be removed from the limits of the work and deposited at such point or points as the Engineer may direct on other property owned by the City of New Haven or disposed of in a manner approved by the Engineer. Material shall be deposited and spread uniformly as directed by the Engineer, within the limits of the area designated by him to receive the surplus material.

20.08.4 METHOD OF MEASUREMENT

Payment lines for "Unclassified Excavation" shall coincide with the slope and subgrade lines as shown on the plans or as ordered.

The amount of unclassified excavation will be determined by the method of average end areas.

20.08.5 BASIS OF PAYMENT

Unclassified excavation will be paid for at the contract unit price per cubic yard for "Unclassified Excavation", which price shall include all equipment, tools, transportation and labor incidental to the completion of the excavation, the formation and compaction of embankments and the disposal of surplus or unsuitable material in accordance with provisions of the plans and of these specifications.

Pay Item Pay Unit

Unclassified Excavation Cubic Yard

Section 50.01

LOAMING, SEEDING AND SODDING

50.01.1 DESCRIPTION

The work under this section shall consist of furnishing all labor, materials, and equipment required to complete the loaming, seeding and/or sodding on areas indicated on the Drawings or directed by the Engineer.

50.01.2 MATERIALS

Grass: All grass seed shall be fresh, clean, of latest crop, and composed of the following varieties, mixed in proportions by weight testing to minimum percentages of purity and germination specified:

Botanical Name Common Name %Purity %Germination %by weight

Festuca ruba Creeping Red or

Chewing's Fescue 98 90 50

Poa pratensis Kentucky Bluegrass 85 75 25

Poa pratensis merion merion Kentucky Bluegrass 85 75 25

Seed shall be delivered pre-mixed to the Site in standard size sealed containers bearing the vendor's guaranteed statement attesting to the composition of the mixture and to the percentages of purity and germination of each variety. Seed shall be stored in such manner that its effectiveness is not impaired.

Samples of seed shall be taken as directed by the Engineer, and shall be submitted to the State Agricultural Station for analysis.

Sod: All sod shall be well-established, good quality, permanent lawn grass, grown on open ground in an approved area. It shall be strongly rooted, containing seventy-five (75) percent Merion Bluegrass (Poa pratensis merion) and twenty-five (25) percent Pennlawn Fescue, free of pernicious weeds and coarse, burned or bare spots.

The sod shall be in rectangular sections varying in length between 3 feet and 6 feet and shall be of uniform width not to exceed 18 inches. Sod shall have a uniform soil thickness of one and one-half (1-1/2) inches.

Grass shall have been mowed to a height of two (2) inches before lifting. Sections shall be of such size as to be lifted without breaking, tearing, or loss of soil.

The Contractor shall furnish the Engineer with an adequate sample for inspection and approval before any sod is delivered to the site.

Loam: The Contractor shall furnish soil samples to the Engineer as requested at no additional cost to the City. Generally, the Engineer shall submit a sample of loam material proposed to be used on the project to a U.S. State or Agricultural Station for analysis and corrective recommendations if necessary. The Engineer shall advise the Contractor as to the corrective recommendations required to make the loam acceptable for use on the project.

Loam material furnished from sources outside of the project limits shall consist of loose, friable, sandy loam or loam topsoil free of admixture of subsoil, refuse stumps, roots, rock, brush, weeds, and other material which will prevent the formulation of a suitable sod or seed bed. Loam shall be that portion of the soil profile defined technically as the "A" horizon by the Soil Science Society of America. It shall contain not less than 6 percent nor more than 20 percent organic matter as determined by loss-on-ignition of oven dried samples drawn by the Engineer. Loam shall be free of stone 1-1/4 inches and larger in over-all dimensions. The Contractor shall notify the Engineer of the location from which he proposes to furnish loam at least 15 calendar days prior to delivery of loam to the project site from that location.

The loam and its source shall be inspected and approved by the Engineer prior to delivery to the project site. Any loam delivered to the project which does not meet the above requirements will be rejected and shall be immediately removed from the project site and replaced by the Contractor with acceptable material at no additional cost to the City.

When loam is not furnished from outside sources, the material used shall be the loam stripped during the course of excavation on the project site. All roots, stumps, debris, pavement, brush sods and other objectionable materials shall be removed by the Contractor prior to its use.

Chlordane: Chlordane shall be a commercial product in dry powder form, of recent manufacture, delivered to the Site in original unopened containers bearing the manufacturer's guaranteed statement of analysis giving the percent of active ingredient.

Commercial Fertilizer Commercial fertilizer shall be a complete fertilizer and a standard product complying with Federal and State Fertilizer laws. It shall be uniform in composition, dry, free flowing, and shall have been stored in a weatherproof place in such a manner that its effectiveness is not impaired. Fertilizer which becomes caked or otherwise damaged, making it unsuitable for use, shall not be accepted.

Commercial fertilizer shall be delivered to the Site in original, unopened containers showing weight, analyses, and name of manufacturer and shall contain the following percentages of weight, of which at least fifty (50) percent of the nitrogen will be derived from an organic material or a composition containing "uramite".

The Contractor shall submit to the Engineer, the manufacturer's guarantee statement of analysis or a manufacturer's certification of compliance covering analysis for the Engineer's written approval before delivery to the Site. Commercial fertilizer shall contain the following ingredients:

A. Nitrogen - derived from:

Methylene urea containing thirty-eight (38) percent or more of insoluble nitrogen ("uramite" or equally approved). Activated sewage sludge containing a minimum of six (6) percent nitrogen (Milorganite or equally approved).

B. Phosphorus - derived from:

Superphosphate containing sixteen (16) to twenty (20) percent phosphoric acid.

Raw bone meal containing twenty (20) to twenty-five (25) percent phosphoric acid and three (3) to four

(4) percent nitrogen.

C. Potash - derived from:

Muriate or potash containing approximately sixty (60) percent potassium.

Commercial fertilizers shall contain the following proportions of ingredients for application to new lawns and sod:

Nitrogen

Phosphorus

Potash

Lime: Lime shall be an approved dolomitic agricultural ground lime-stone, (calcium carbonate) and shall contain not less than eighty five (85) percent of total carbonates, (total carbonates shall be considered as calcium carbonate). Lime-stone shall meet the following graduation requirements: at least fifty (50) percent will pass through a two hundred (200) mesh sieve, ninety (90) percent will pass through a one hundred (100) mesh sieve, one hundred (100) percent will pass through a ten (10) mesh sieve. It shall have been stored in a weatherproof place, in such a manner that its effectiveness is not impaired. Ground limestone shall be delivered to the Site in original, unopened containers bearing the manufacturer's guaranteed statement of analysis.

50.01.3 CONSTRUCTION METHODS

All lines and grades required for proper performance of work shall be established by the Contractor in the field and shall meet with the Engineer’s approval. Commencement of work shall not begin without the written approval of the Engineer.

Planting Seasons Planting shall progress only under favorable weather conditions during the proper season for such work. Unless otherwise authorized in writing by the Engineer the following shall apply:

Grass seed and sod shall be placed only between August 15th and October 15th or only between April 1st and May 15th.

Preparation of Subgrade Subsoil shall be graded and uniformly compacted to a true smooth slope nine (9) inches below, and parallel to, the proposed finish grade for areas to be seeded or sodded.

Subgrade shall be loosened to a depth of two (2) inches to four (4) inches. Subsoil shall be kept in a loosened condition until the loam is spread. Subgrade shall be inspected and approved by the Engineer before placing of loam.

Placing and Spreading of Loam: Loam shall be placed and spread, compacted and otherwise manipulated, over approved areas to a sufficient depth so that after natural settlement and light rolling, the completed work shall conform to the lines, grades and elevations shown on the Drawings or directed by the Engineer.

After loam has been spread, it shall be carefully prepared by scarifying or harrowing and hand raking. The whole surface shall then be rolled with a hand roller weighing not more than one hundred (100) pounds per foot of width. All depressions caused by settlement as a result of rolling shall be filled with additional loam and the surface regraded and re-rolled until it presents a smooth, even finish to the required grades.

Application of Lime Prior to completion of loam preparation, and if recommended as a result of soil analysis, lime shall be evenly distributed and thoroughly worked into the top three (3) inches of loam at the rate recommended by the soil analysis laboratory. Limestone shall be applied at least seven (7) days before applying fertilizer and chlordane. The ph content of the loam shall be 6.0 to 7.0 before sod or seed is placed.

Application of Fertilizer Commercial fertilizers shall be uniformly applied in all new grass areas. The application shall be within one week prior to placement of sod, or seed at the rate recommended by the soil analysis laboratory, and worked lightly into the top two (2) inches of loam. Grass areas shall be watered thoroughly after the application of fertilizers.

Application of Chlordane After completion of grading, but prior to delivery of sod, five (5) percent chlordane dust shall be applied at the rate of three and one half (3-1/2) pounds per one thousand square feet (1,000) of grass area, and raked into the top one half (1/2) inch of soil. Chlordane shall be evenly distributed and the entire area thoroughly watered during or immediately after the application.

Manufacturer's directions shall be followed.

Sowing of Seed Seeding shall be done on dry or moderately dry soil, and at times when wind does not exceed a velocity of five (5) miles per hour. Seeding shall be done in two directions, at right angles, in such a manner that a uniform stand shall result. Seed shall be sown evenly by hand, or with an approved mechanical spreader, to a depth not exceeding one-fourth (1/4) inch, at the rate of five (5) pounds per one thousand (1000) square feet of area. After seeding the surface shall be evenly and lightly raked with a fine wood-toothed rake or other approved method, and rolled in both directions with a hand roller weighing not more than one hundred (100) pounds per foot of width, and then watered thoroughly with a fine spray. Light sprayings shall be continued as required until grass has become established. The Contractor shall take necessary precautions to keep the area undisturbed until grass is established.

Placing Sod All sod must be delivered to the job within 24 hours after being cut and shall be installed within 36 hours after being cut. Sod shall arrive in a moist condition, free of insects, disease, burned or bare spots, and with root systems having sufficient soil to cover the fibrous roots.

While in temporary storage sod shall be placed in layers with grass to grass and roots to roots. The stacks or piled layers shall be sprayed with water and covered with moist burlap. Particular care shall be exercised in digging, stacking, handling, and replanting, and no sod found in an unsatisfactory condition shall be installed.

Sod shall be placed so that no voids occur between strips and shall be immediately tamped or rolled to an even surface true to finished grade, smooth, even and equally firm at all points. Well-screened loam shall be lightly spread over the sodded area and raked or brushed over the surface. The Contractor shall then thoroughly water to a depth of six (6) inches every twenty-four (24) hours, or as necessary until sod is established.

The Contractor shall protect and maintain new grass areas until final acceptance by proper watering, mowing, raking, weeding, edging, repairing sunken areas or washes, replanting and all incidental work, necessary to establish a uniform, healthy stand of specified grasses in all areas required. After grass has started, all areas and parts of areas which fail, for any reason, to show a uniform stand of grass, shall be re-sodded or be seeded repeatedly by the Contractor until all areas are covered with a satisfactory stand of grass of the varieties specified. The Engineer shall determine when a uniform, healthy grass area is established. There shall be no final acceptance of grass areas prior to ninety (90) of placing sod of seed.

50.01.4 METHOD OF MEASUREMENT

Measurement for payment for loaming, seeding and sodding shall be made by the Engineer and shall be the actual area of sodding or seeding in accordance with the limits and dimensions shown on the Contract Drawings or directed by the Engineer, and in accordance with these Specifications.

Payment Limits for areas Disturbed by Sewer Work

Payment lines shall be width of actual placement of sod or seed except that in no case shall the width between payment lines be more than the following:

a. For pipe-arches, sewers, service laterals, and underdrains, 12 feet greater than the nominal horizontal inside dimension of pipe where such dimension is less than 36 inches.

b. For the same types of pipe-arches 13 feet greater than the nominal horizontal inside dimension of the pipe where such dimension is 36 inches or greater.

Payment Limits for Other Areas

Payment lines shall be the length and width of actual placement of sod or loam and seed except that in no case shall said length and width between payment lines be more than that shown on the Drawings or directed by the Engineer.

50.01.5 BASIS OF PAYMENT

Payment for this work will be made at the contract price bid per square yard for "Sodding" or the contract price bid per square yard of "Loaming and Seeding" as measured and approved for payment by the Engineer. The contract unit prices shall include the cost of all labor, materials, equipment, transportation and incidentals necessary to complete this item in accordance with the Drawings and Specifications and to the satisfaction of the Engineer. When no item for "Loaming, Seeding and Sodding" appears in the proposal, the cost of this work shall be included in the various contract unit prices.

Section 50.02

FURNISH AND PLACE TOPSOIL

50.02.1 DESCRIPTION

This work shall consist of furnishing, placing and shaping topsoil in the areas and to the depth shown on the Drawings or as directed by the Engineer.

50.02.2 MATERIALS

1. Topsoil shall contain not less than three (3) nor more than twenty (20) percent organic matter as determined by loss on ignition of over-dried samples drawn by the Engineer.

2. The following textural classes, as determined on the basis of material passing the 20-mesh sieve and subjected to partial mechanical analysis, shall be acceptable.

-Loamy sand, with not more than 80 percent sand

-Sandy loam

-Loam

-Sandy clay loam, with not more than 30 percent clay

-Silt

-Loam, with not more than 60 percent silt

3. The topsoil shall be loose, friable, reasonably free of admixtures of subsoil, free from refuse, stumps, roots, brush, weeds, rocks and stones 1-1/4 inch in overall dimensions. The topsoil shall be also free from any material that will prevent the formation of a suitable seedbed or prevent seed germination and plant growth.

4. The topsoil and its source shall be inspected and approved by the Engineer before the material is delivered to the project site. Any material delivered to the site which does not meet specifications, or which has become mixed with undue amounts of subsoil during any operation at the source or during placing or spreading, will be rejected and shall be replaced by the Contractor with acceptable material at his own expense.

50.02.3 CONSTRUCTION METHODS

The areas on which topsoil is to be placed shall be graded to a reasonably true surface. Topsoil shall then be spread and shaped to the lines and grades shown on the Drawings or as directed by the Engineer. The depth indicated on the Drawings to which topsoil is to be placed is that required after settlement of the material has taken place. All stones, roots, debris, sod, weeds or other undesirable material shall be removed. After shaping and grading, all trucks and other equipment shall be excluded from the topsoil area to prevent excessive compaction. The Contractor shall perform such work as required to provide a friable surface for seed germination and plant growth prior to seeding.

During hauling and spreading operations, the Contractor shall immediately remove any material dumped or spilled on the shoulders or pavement.

It shall be the Contractor’s responsibility to restore to the line, grade and surface all eroded areas with approved material and to keep topsoiled area in acceptable condition until the completion of the construction work.

50.02.4 METHOD OF MEASUREMENT

This work will be measured for payment by the number of square yards of area on which the placing of topsoil has been completed and the work accepted.

50.02.5 BASIS OF PAYMENT

Payment shall be made at the contract unit price per cubic yard, which price shall include all labor, materials, and equipment incidental thereto.

Section 50.02 FURNISH AND PLACE TOPSOIL