HomeMy WebLinkAboutUntitled (2)
31 20 00 -1 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN SECTION 31 20 00 -EARTH MOVING PART 1
-GENERAL 1.1 RELATED DOCUMENTS A. The general provisions of the contract, including general and supplementary conditions and the general requirements, apply to the work specified in
this section. 1.2 SUMMARY A. This Section includes the following: 1. Preparing subgrades for slabs-on-grade, walks, pavements, lawns, and plantings. 2. Excavating and backfilling for
structures. 3. Base course for concrete walks and pavements. 4. Excavating and backfilling trenches for buried mechanical and electrical utilities and pits for buried utility structures.
B. Related Sections include the following: 1. Division 01 Section "Unit Prices" for a schedule of unit prices. 2. Division 31 Section "Site Clearing" for site stripping, grubbing, removing
topsoil, and protecting trees to remain. 3. Division 32 Section "Landscaping" for finish grading, including placing and preparing topsoil for lawns and plantings. 1.3 DEFINITIONS A.
Base Course: Layer placed between the subgrade and a concrete pavement or walk. B. Bedding Course: Layer placed over the excavated subgrade in a trench before laying pipe. C. Excavation:
Removal of material encountered above subgrade elevations. 1. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated dimensions without direction by Architect.
Unauthorized excavation, as well as remedial work directed by Architect, shall be without additional compensation. D. Subgrade: Surface or elevation remaining after completing excavation,
or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials. 1.4 SUBMITTALS A. Test Reports-Excavating: Submit following reports directly to Architect/Engineer
from the testing services, with copy to Contractor: 1. Test reports on borrow material. 2. Verification of each footing subgrade.
31 20 00 -2 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN 3. Field density test reports. 4. One
optimum moisture-maximum density curve for each type of soil encountered. 5. Report of actual unconfined compressive strength and/or results of bearing tests of each strata tested. 1.5
QUALITY ASSURANCE A. Codes and Standards: Perform excavation work in compliance with applicable requirements of governing authorities having jurisdiction. B. Testing and Inspection Service:
1. Testing Laboratory: Employ, at Contractor's expense, testing laboratory to perform soil testing and inspection service for quality control testing during earthwork operations. 2.
Soils Engineer: Testing laboratory shall assign a registered Soils Engineer to supervise the entire period of earthwork and be responsible for all testing and inspections. a. Soils Investigation
Report: Soils Engineer shall obtain a copy of the soils investigation report and be responsible to make sure that all earthwork operations conform, unless directed otherwise by the Architect/Engineer
or so indicated on by the Contract Documents. b. Soil materials used on the project whether existing or new shall be verified and approved by Soils Engineer. If not approved, the Soils
Engineer shall make recommendations to the proper materials to be used for approval by the Architect/Engineer. C. Compaction of soil materials used on the project whether existing or
new based on their intend use, shall be verified and approved by Soils Engineer. If not approved, the Soils Engineer shall make recommendations to the proper compaction and percent of
relative density of soil materials for approval by the Architect/Engineer. 1.6 PROJECT CONDITIONS A. Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner
or others unless permitted in writing by Architect and then only after arranging to provide temporary utility services according to requirements indicated: 1. Notify Owner’s Owner’s
Representative and Architect in writing not less than three days in advance of proposed utility interruptions. 2. Do not proceed with utility interruptions without Architect's written
permission. 3. Contact utility-locator service for area where Project is located before excavating. B. Demolish and completely remove from site existing underground utilities indicated
to be removed. Coordinate with utility companies to shut off services if lines are active. PART 2 -PRODUCTS 2.1 SOIL MATERIALS A. General: Provide borrow soil materials when sufficient
satisfactory soil materials are not available from excavations.
31 20 00 -3 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN B. Satisfactory Soils: ASTM D 2487 soil
classification groups GW, GP, GM, SW, SP, and SM, or a combination of these group symbols; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials,
vegetation, and other deleterious matter. C. Unsatisfactory Soils: ASTM D 2487 soil classification groups GC, SC, ML, MH, CL, CH, OL, OH, and PT, or a combination of these group symbols.
1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction. D. Backfill and Fill: Satisfactory soil materials.
E. Base: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand as indicated on drawings. F. Engineered Fill: Naturally or
artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch sieve and not more than
12 percent passing a No. 200 sieve. G. Bedding: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except
with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve. 2.2 ACCESSORIES A. Detectable Warning Tape: Acid-and alkali-resistant polyethylene film warning
tape manufactured for marking and identifying underground utilities, minimum 6 inches wide and 4 mils thick, continuously inscribed with description of utility, with metallic core encased
in a protective jacket, detectable by metal detector when tape is buried up to 30 inches deep; colored as follows: 1. Blue: Water systems. 2. Green: Sewer systems. PART 3 -EXECUTION
3.1 PREPARATION A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards
created by earthwork operations. B. Protect subgrades and foundation soils against freezing temperatures or frost. Provide protective insulating materials as necessary. C. Provide erosion-control
measures to prevent erosion or displacement of soils and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways. 3.2 DEWATERING A. Prevent surface
water and ground water from entering excavations, from ponding on
31 20 00 -4 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN prepared subgrades, and from flooding
Project site and surrounding area. B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation. 1. Reroute surface water runoff away from excavated
areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches. 2. Install a dewatering system to keep subgrades dry and convey ground
water away from excavations. Maintain until dewatering is no longer required. 3.3 EXCAVATION, GENERAL A. Unclassified Excavation: Excavation to subgrade elevations regardless of the
character of surface and subsurface conditions encountered, including rock, soil materials, and obstructions. 1. If excavated materials intended for fill and backfill include unsatisfactory
soil materials and rock, replace with satisfactory soil materials. 3.4 EXCAVATION FOR STRUCTURES A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus
1 inch. Extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections. 1. Excavations
for Footings and Foundations: Do not disturb bottom of excavation. Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades
to leave solid base to receive other work. 2. Pile Foundations: Stop excavations from 6 to 12 inches above bottom of pile cap before piles are placed. After piles have been driven, remove
loose and displaced material. Excavate to final grade, leaving solid base to receive concrete pile caps. 3. Excavation for Underground Tanks, Basins, and Mechanical or Electrical Utility
Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch. Do not disturb bottom of excavations intended for bearing surface. 3.5 EXCAVATION
FOR WALKS AND PAVEMENTS A. Excavate surfaces under walks and pavements to indicated cross sections, elevations, and grades. 3.6 EXCAVATION FOR UTILITY TRENCHES A. Excavate trenches to
indicated gradients, lines, depths, and elevations shown on drawings. 1. Beyond building perimeter, excavate trenches to allow installation of top of pipe below frost line. 3.7 APPROVAL
OF SUBGRADE A. Notify Architect when excavations have reached required subgrade.
31 20 00 -5 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN B. If Architect determines that unsatisfactory
soil is present, continue excavation and replace with compacted backfill or fill material as directed. 1. Additional excavation and replacement material will be paid for according to
Contract provisions for changes in the Work. C. Proof roll subgrade with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding. Do not proof roll wet
or saturated subgrades. D. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Architect. 3.8 UNAUTHORIZED
EXCAVATION A. Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top
elevation. Lean concrete fill may be used when approved by Architect. 1. Fill unauthorized excavations under other construction or utility pipe as directed by Architect. 3.9 STORAGE
OF SOIL MATERIALS A. Stockpile borrow materials and satisfactory excavated soil materials. Stockpile soil materials without intermixing. Place, grade, and shape stockpiles to drain surface
water. Cover to prevent windblown dust. 1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees. 3.10 BACKFILL A. Place and compact
backfill in excavations promptly, but not before completing the following: 1. Construction below finish grade including, where applicable, dampproofing, waterproofing, and perimeter
insulation. 2. Surveying locations of underground utilities for record documents. 3. Inspecting and testing underground utilities. 4. Removing concrete formwork. 5. Removing trash and
debris. 6. Removing temporary shoring and bracing, and sheeting. 7. Installing permanent or temporary horizontal bracing on horizontally supported walls. 3.11 UTILITY TRENCH BACKFILL
A. Place and compact bedding course on trench bottoms as indicated on drawings. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints,
fittings, and bodies of conduits.
31 20 00 -6 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN B. Provide 4-inch-thick, concrete-base
slab support for piping or conduit less than 30 inches below surface of roadways. After installing and testing, completely encase piping or conduit in a minimum of 4 inches of concrete
before backfilling or placing roadway subbase. C. Place and compact initial backfill of subbase material, free of particles larger than 1 inch, to a height of 12 inches over the utility
pipe or conduit. 1. Carefully compact material under pipe haunches and bring backfill evenly up on both sides and along the full length of utility piping or conduit to avoid damage or
displacement of utility system. D. Coordinate backfilling with utilities testing. E. Fill voids with approved backfill materials while shoring and bracing, and as sheeting is removed.
F. Place and compact final backfill of satisfactory soil material to final subgrade. G. Install warning tape directly above utilities, 12 inches below finished grade, except 6 inches
below subgrade under pavements and slabs. 3.12 FILL A. Preparation: Remove vegetation, topsoil, debris, unsatisfactory soil materials, obstructions, and deleterious materials from ground
surface before placing fills. B. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material. C. Place
and compact fill material in layers to required elevations as follows: 1. Under planted areas, use satisfactory soil material. 2. Under walks and pavements, use satisfactory soil material.
3. Under footings and foundations, use engineered fill. 3.13 MOISTURE CONTROL A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill layer before compaction to
within 2 percent of optimum moisture content. 1. Do not place backfill or fill material on surfaces that are muddy, frozen, or contain frost or ice. 2. Remove and replace, or scarify
and air-dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight. 3.14 COMPACTION OF BACKFILLS
AND FILLS A. Place backfill and fill materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment, and not more than 4 inches in loose
depth for material compacted by hand-operated tampers.
31 20 00 -7 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN B. Place backfill and fill materials
evenly on all sides of structures to required elevations, and uniformly along the full length of each structure. C. Compact soil to not less than the following percentages of maximum
dry unit weight according to ASTM D 1557: 1. Footings: Compact top 12" of subgrade and each layer of backfill or fill material at 95% maximum density for cohesive soils and 100% relative
density for cohesionless soils. 2. Structures, Pavements: Compact top 12" of subgrade and each layer of backfill or fill material at 90% maximum density for cohesive material or 95%
relative density for cohesionless material. 3. Unpaved Areas: Compact top 6" of subgrade and each layer of backfill or fill material at 85% maximum density for cohesive soils and 90%
relative density for cohesionless soils. 4. Walkways: Compact top 6" of subgrade and each layer of backfill or fill material at 90% maximum density for cohesive material or 95% relative
density for cohesionless material. 3.15 GRADING A. General: Uniformly grade areas to a smooth surface, free from irregular surface changes. Comply with compaction requirements and grade
to cross sections, lines, and elevations indicated. 1. Provide a smooth transition between adjacent existing grades and new grades. 2. Cut out soft spots, fill low spots, and trim high
spots to comply with required surface tolerances. B. Site Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within
the following tolerances: 1. Lawn or Unpaved Areas: Plus or minus 1 inch. 2. Walks: Plus or minus 1 inch. 3. Pavements: Plus or minus 1/2 inch. C. Grading inside Building Lines: Finish
subgrade to a tolerance of 1/2 inch when tested with a 10-foot straightedge. 3.16 FIELD QUALITY CONTROL A. Testing Agency: Engage a qualified independent geotechnical engineering testing
agency to perform field quality-control testing. B. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earthwork only after test
results for previously completed work comply with requirements. C. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed to verify design bearing
capacities. Subsequent verification and approval of other footing subgrades may be based on a visual comparison of subgrade with tested subgrade when approved by Architect.
31 20 00 -8 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 EARTH MOVING OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN D. Testing agency will test compaction
of soils in place according to ASTM D 1556, ASTM D 2167, ASTM D 2922, and ASTM D 2937, as applicable. Tests will be performed at the following locations and frequencies: 1. Paved and
Building Slab Areas: At subgrade and at each compacted fill and backfill layer, at least one test for every 2000 sq. ft. or less of paved area or building slab, but in no case fewer
than three tests. 2. Foundation Wall Backfill: At each compacted backfill layer, at least one test for each 100 feet or less of wall length, but no fewer than two tests. 3. Trench Backfill:
At each compacted initial and final backfill layer, at least one test for each 150 feet or less of trench length, but no fewer than two tests. E. When testing agency reports that subgrades,
fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil to depth required; recompact and retest until specified
compaction is obtained. 3.17 PROTECTION A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris. B. Repair and reestablish
grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations
or weather conditions. 1. Scarify or remove and replace soil material to depth as directed by Architect; reshape and recompact. C. Where settling occurs before Project correction period
elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing. 1. Restore appearance, quality, and condition of finished surfacing to
match adjacent work, and eliminate evidence of restoration to the greatest extent possible. 3.18 DISPOSAL OF SURPLUS AND WASTE MATERIALS A. Disposal: Remove surplus satisfactory soil
and waste material, including unsatisfactory soil, trash, and debris, and legally dispose of it off Owner's property. END OF SECTION 31 20 00