VA 31 20 11-2008 EARTH MOVING (SHORT FORM).pdf

1、09-08M 31 20 11 - 1 SECTION 31 20 11 EARTH MOVING (SHORT FORM) SPEC WRITER NOTES: 1. Use this section for small projects where earthwork is not extensive and site work restoration only is required. 2. Where materials are specified, substitute readily available materials meeting local State DOT stand

2、ards, if possible. Contact local quarries regarding availability of local materials meeting State DOT standards. 3. Delete between / - / if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1:DESCRIPTION:

3、This section specifies the requirements for furnishing all equipment, materials, labor and techniques for earthwork including excavation, fill, backfill and site restoration utilizing fertilizer, seed and/or sod. 1.2 DEFINITIONS: A. Unsuitable Materials: 1. Fills: Topsoil, frozen materials; construc

4、tion materials and materials subject to decomposition; clods of clay and stones larger than 75 mm (3 inches); organic materials, including silts, which are unstable; and inorganic materials, including silts, too wet to be stable. 2. Existing Subgrade (except footings): Same materials as above paragr

5、aph, that are not capable of direct support of slabs, pavement, and similar items, with the possible exception of improvement by compaction, proofrolling, or similar methods of improvement. 3. Existing Subgrade (footings only): Same as Paragraph 1, but no fill or backfill. If materials differ from /

6、 reference borings and / design requirements, excavate to acceptable strata subject to Resident Engineers approval. B. Earthwork: Earthwork operations required within the new construction area. It also includes earthwork required for auxiliary structures and buildings and sewer and other trenchwork

7、throughout the job site. C. Degree of Compaction: Degree of compaction is expressed as a percentage of maximum density obtained by the test procedure presented in / AASHTO / T99 / T180 / Method A. / ASTM / D698 / D1557 / Method A. / D. The term fill means fill or backfill as appropriate. Provided by

8、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-08M 31 20 11 - 2 1.3 RELATED WORK: A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES. B. Safety Requirements / and blasting operations /: Section 00 72 00, G

9、ENERAL CONDITIONS, Article, ACCIDENT PREVENTION. C. Protection of existing utilities, fire protection services, existing equipment, roads, and pavements: Section 01 00 00, GENERAL REQUIREMENTS. D. Subsurface Investigation: Section 01 00 00, GENERAL REQUIREMENTS, Article, PHYSICAL DATA. /E. Foundatio

10、n System Requirements: Section 31 62 00, DRIVEN PILES, Section 31 63 16, AUGER CAST GROUT PILES, Section 31 63 26, DRILLED CAISSONS, FLOWABLE FILL, Section 31 23 23.33. / 1.4 CLASSIFICATION OF EXCAVATION: A. Unclassified Excavation: Removal and disposal of pavements and other man-made obstructions v

11、isible on the surface; utilities, and other items including underground structures indicated to be demolished and removed; together with any type of materials regardless of character of material and obstructions encountered. SPEC WRITER NOTE: Retain either Unclassified excavation above or classified

12、 excavation below. B. Classified Excavation: Removal and disposal of all material not defined as rock. C. Rock Excavation: 1. Solid ledge rock (igneous, metamorphic, and sedimentary rock). 2. Bedded or conglomerate deposits so cemented as to present characteristics of solid rock which cannot be exca

13、vated without blasting; or the use of a modern power excavator (shovel, backhoe, or similar power excavators) of no less than 0.75 m3 (1 cubic yard) capacity, properly used, having adequate power and in good running condition. 3. Boulders or other detached stones each having a volume of 0.4 m3 (1/2

14、cubic yard) or more. 1.5 MEASUREMENT AND PAYMENT FOR ROCK EXCAVATION: A. Measurement: Cross section and measure the uncovered and separated materials, and compute quantities by the Registered Professional Land Surveyor or Registered Civil Engineer, specified in Section 01 00 00, GENERAL REQUIREMENTS

15、. Do not measure quantities beyond the following limits: 1. 300 mm (12 inches) outside of the perimeter of formed footings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-08M 31 20 11 - 3 2. 600 mm (24 inches) outside the face of concrete work fo

16、r which forms are required, except for footings. 3. 150 mm (6 inches) below the bottom of pipe and not more than the pipe diameter plus 600 mm (24 inches) in width for pipe trenches. 4. The outside dimensions of concrete work for which no forms are required (trenches, conduits, and similar items not

17、 requiring forms). /B. Payment: No separate payment shall be made for rock excavation quantities shown. The contract price and time will be adjusted for overruns or underruns in accordance with Articles, DIFFERING SITE CONDITIONS, CHANGES and CHANGES-SUPPLEMENT of the GENERAL CONDITIONS as applicabl

18、e. / /B. Payment for Differing Site Conditions: When rock excavation, as classified, is encountered, the contract price and time will be adjusted in accordance with Articles, DIFFERING SITE CONDITIONS, CHANGES and CHANGES-SUPPLEMENT of the GENERAL CONDITIONS as applicable. / 1.6 SUBMITTALS: A. Submi

19、t in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Rock Excavation Report: 1. Certification of rock quantities excavated. 2. Excavation method. 3. Labor. 4. Equipment. 5. Land Surveyors or Civil Engineers name and official registration stamp. 6. Plot plan showing ele

20、vations. SPEC WRITER NOTE: Use only when there is a VA Retained Testing Laboratory. C. Furnish to Resident Engineer, soil samples, suitable for laboratory tests, of proposed off site or on site fill material. 1.7 APPLICABLE PUBLICATIONS: A. Publications listed below form a part of this specification

21、 to the extent referenced. Publications are referenced in the text by the basic designation only. B. American Nursery and Landscape Association (ANLA): 2004. American Standard for Nursery Stock C. American Association of State Highway and Transportation Officials (AASHTO): T99-01 (R2004). Moisture-D

22、ensity Relations of Soils Using a 2.5 kg (5.5 lb) Rammer and a 305 mm (12 inch) Drop Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-08M 31 20 11 - 4 T180-01 (2004). Moisture-Density Relations of Soils Using a 4.54-kg 10 lb Rammer and a 457 mm (18

23、 inch) Drop D. American Society for Testing and Materials (ASTM): D698-07 Laboratory Compaction Characteristics of Soil Using Standard Effort D1557-02. Laboratory Compaction Characteristics of Soil Using Modified Effort E. Standard Specifications of (Insert name of local state) State Department of T

24、ransportation, latest revision. PART 2 - PRODUCTS 2.1 MATERIALS: SPEC WRITER NOTE: Make material requirements agree with applicable requirements specified in the referenced Applicable Publications. Update and specify only that which applies to the project. A. Fills: Materials approved from on site a

25、nd off site sources having a minimum dry density of 1760 kg/m3 (110 pcf), a maximum Plasticity Index of 6, and a maximum Liquid Limit of 30. B. Granular Fill: 1. Under concrete slab, crushed stone or gravel graded from 25 mm (1 inch) to 4.75 mm (No. 4). 2. Bedding for sanitary and storm sewer pipe,

26、crushed stone or gravel graded from 13 mm (1/2 inch) to 4.75 mm (No. 4). SPEC WRITER NOTE: Make the following sections match the areas shown on the drawings. Clearly show which areas are to be restored utilizing fertilizer and seed, or sod. Provide a detail in the drawings providing the thickness an

27、d condition of the materials to be applied and whether straw is to be applied over the seed. C. Fertilizer: (5-10-5) delivered to site in unopened containers that clearly display the manufacturers label, indicating the analysis of the contents. D. Seed: Grass mixture comparable to existing turf deli

28、vered to site in unopened containers that clearly display the manufacturers label, indicating the analysis of the contents. E. Sod: Comparable species with existing turf. Use State Certified or State Approved sod when available. Deliver sod to site immediately after cutting and in a moist condition.

29、 Thickness of cut must be 19 mm to 32 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-08M 31 20 11 - 5 mm (3/4 inch to 1 1/4 inches) excluding top growth. There shall be no broken pads and torn or uneven ends. PART 3 - EXECUTION 3.1 SITE PREPARATI

30、ON: SPEC WRITER NOTE: Make the following sections match the areas shown on the drawings. Note any visible areas of trash, debris, previously dumped or stored materials to be removed in accordance with these sections on the drawings. NOTE: Do not estimate quantity or volume of materials to be removed

31、 if being handled as part of the lump sum price for the work. A. Clearing: Clearing within the limits of earthwork operations as described or designated by the Resident Engineer. Work includes removal of trees, shrubs, fences, foundations, incidental structures, paving, debris, trash and any other o

32、bstructions. Remove materials from the / Medical Center / Cemetery Property /. B. Grubbing: Remove stumps and roots 75 mm (3 inches) and larger diameter. Undisturbed sound stumps, roots up to 75 mm (3 inches) diameter, and nonperishable solid objects which will be a minimum of 900 mm (3 feet) below

33、subgrade or finished embankment may be left. / Cemetery Projects: do not leave material within the burial profile up to 2400 mm (8 feet) below finished grade. / C. Trees and Shrubs: Trees and shrubs, not shown for removal, may be removed from the areas within 4500 mm (15 feet) of new construction an

34、d 2250 mm (7-6”) of utility lines if such removal is approved in advance by the Resident Engineer. Remove materials from the / Medical Center / Cemetery Property /. / Trees and shrubs, shown to be transplanted, shall be dug with a ball of earth and burlapped in accordance with the latest issue of th

35、e, “American Standard for Nursery Stock“, of the American Association of Nurserymen, Inc. Transplant trees and shrubs to a permanent or temporary position within two hours after digging. Maintain trees and shrubs held in temporary locations by watering as necessary and feeding semi-annually with liq

36、uid fertilizer with a minimum analysis of 5 percent nitrogen, 10 percent phosphorus and 5 percent potash. Maintain plants moved to permanent positions as specified for plants in temporary locations until the conclusion of the contract. / Box, and otherwise protect from damage, existing trees and shr

37、ubs which are not shown to be removed in the construction area. Repair immediately damage to existing trees and shrubs by trimming, cleaning and painting damaged areas, including the roots, in accordance Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-

38、,-09-08M 31 20 11 - 6 with standard industry horticultural practice for the geographic area and plant species. Building materials shall not be stored closer to trees and shrubs, that are to remain, than the farthest extension of their limbs. D. Stripping Topsoil: Unless otherwise indicated on the dr

39、awings, the limits of earthwork operations shall extend anywhere the existing grade is filled or cut or where construction operations have compacted or otherwise disturbed the existing grade or turf. Strip topsoil as defined herein, or as indicated in the geotechnical report, from within the limits

40、of earthwork operations as specified above unless specifically indicated or specified elsewhere in the specifications or shown on the drawings. Topsoil shall be fertile, friable, natural topsoil of loamy character and characteristic of the locality. Topsoil shall be capable of growing healthy hortic

41、ultural crops of grasses. Stockpile topsoil and protect as directed by the Resident Engineer. Eliminate foreign material, such as weeds, roots, stones, subsoil, frozen clods, and similar foreign materials, larger than 0.014 m3 (1/2 cubic foot) in volume, from soil as it is stockpiled. Retain topsoil

42、 on the station. Remove foreign materials larger than 50 mm (2 inches) in any dimension from topsoil used in final grading. Topsoil work, such as stripping, stockpiling, and similar topsoil work, shall not, under any circumstances, be carried out when the soil is wet so that the tilth of the soil wi

43、ll be destroyed. SPEC WRITER NOTE: Modify the specifications for topsoil, whether on site or imported to the site, to contain the minimum organic content and constituents identified in the geotechnical report. If there no such recommendations, follow the specifications adopted by the closest State D

44、epartment of Transportation (DOT) for topsoil. If the onsite topsoil does not meet the minimum requirements of the geotechnical report or DOT standards, whichever is greater, then the soil shall either be amended to meet the requirements, or topsoil shall be imported that does meet the requirements.

45、 Edit the specifications or add notes on the drawings requiring that the analysis of the topsoil and plans for achieving the stated constituents and characteristics for the topsoil are submitted to the Resident Engineer for review and approval. /1. Cemetery Projects: Recommend that the top soil be t

46、ested for chemicals, pesticides and fertilizers if topsoil is to be removed from lands formerly utilized as farmland, to verify suitability for Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-08M 31 20 11 - 7 use as topsoil in the cemetery where n

47、ew lawn areas are to be established. / 2. Concrete Slabs and Paving: Score deeply or saw cut to insure a neat, straight cut, sections of existing concrete slabs and paving to be removed where excavation or trenching occurs. Extend pavement section to be removed a minimum of 300 mm (12 inches) on eac

48、h side of widest part of trench excavation and insure final score lines are approximately parallel unless otherwise indicated. Remove material from the / Medical Center / Cemetery Property /. E. Disposal: All materials removed from the property shall be disposed of at a legally approved site, for th

49、e specific materials, and all removals shall be in accordance with all applicable Federal, State and local regulations. / No burning of materials is permitted onsite. / 3.2 EXCAVATION: A. Shoring, Sheeting and Bracing: Shore, brace, or slope to its angle of repose banks of excavations to protect workmen, banks, adjacent paving, structures, and utilities, in compliance with