SW0001-MN020506r
I
•t PROJECT MANUAL FOR
GENERAL CONSTRUCTION
of
RIVERCHASE ELEMENTARY SCHOOL
ELEVATED SIDEWALK
in
COPPELL, DALLAS COUNTY, TEXAS
for
CITY OF COPPELL
COPPELL, TEXAS
Issue Date: May 6, 2002
Prepared by:
PACHECO KOCH
�` Consulting_ Engineers, Inc.
PROJECT MANUAL FOR
GENERAL CONSTRUCTION
of
RIVERCHASE ELEMENTARY SCHOOL
ELEVATED SIDEWALK
in
COPPELL, DALLAS COUNTY, TEXAS
for
CITY OF COPPELL
COPPELL, TEXAS
Issue Date: May 6, 2002
JOB NO. 223001
JOB NO. 223001
TABLE OF CONTENTS
SECTIONS
02110
Site Clearing
02200
Site Earthwork
02221
Backfilling & Compaction for Site
02520
Portland Cement Concrete Paving
02720
Storm Sewerage
02250
Screw Anchor Foundations
02251
Screw Anchor Installation
-- 06500
Prefabricated Structural Plastics
Schedule of Construction Quantities and Bidders Unit Costs
PAGES
3
2
1
1
1
4
4
2
1
RIVERCAHSE LEMENTARYSCHOOL FUVAI` o �tOEWAGI
oppell, Texas
SECTION 02110 - SITE CLEARING
PART1 GENERAL
1.1 Related Documents: Drawings, specifications and general provisions of Contract,
including General and Supplementary Conditions and Division 1 Specification sections,
apply to work of this section. It is the responsibility of the Contractor and all
subcontractors to locate information pertaining to required items of work specified or
indicated elsewhere in the Contract Documents.
1.2 St
A.
B.
C.
D.
E.
F.
immary: This Section includes the following:
Protection of existing trees indicated to remain.
Removal of trees and other vegetation.
Topsoil stripping.
Clearing and grubbing.
Removing above -grade improvements.
Removing below -grade improvements.
1.3 Project Conditions
A. Traffic: Conduct site - clearing operations to ensure minimum interference with
roads, streets, walks, and other adjacent occupied or used facilities. Do not close
or obstruct streets, walks, or other occupied or used facilities without permission
from authorities having jurisdiction. Provide barricading in accordance with local
and state requirements.
B. Protection of Existing Improvements: Provide protections necessary to prevent
damage to existing improvements indicated to remain in place.
1. Protect improvements on adjoining properties and on Owner's property.
2. Restore damaged improvements to their original condition, as acceptable to
property owners.
C. Protection of Existing Trees and Vegetation: Protect existing trees and other
vegetation indicated to remain in place against unnecessary cutting, breaking or
skinning of roots, skinning or bruising of bark, smothering of trees by stockpiling
construction materials or excavated materials within drip line, excess foot or
vehicular traffic, or parking of vehicles within drip line. Provide temporary guards to
protect trees and vegetation to be left standing.
1. Water trees and other vegetation to remain within limits of contract work as
required to maintain their health during course of construction operations.
2. Provide protection for roots over 1 -1/2 inch in diameter that are cut during
construction operations. Coat cut faces with an emulsified asphalt or other
acceptable coating formulated to use on damaged plant tissues. Temporarily
cover exposed roots with wet burlap to prevent roots from drying out; cover
with earth as soon as possible.
3. Repair or replace trees and vegetation indicated to remain that are damaged
by construction operations in a manner acceptable to Architect. Employ a
licensed arborist to repair damage to trees and shrubs.
D. Improvements on Adjoining Property: Authority for performing removal and
alteration work on property adjoining Owner's property will be obtained by Owner
prior to award of contract.
1. Extent of work on adjacent property is indicated on Drawings.
02110 -1
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RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
E. Salvable Improvements: Carefully remove items indicated to be salvaged and
store on Owner's premises where indicated or directed.
1.4 EXISTING SERVICES
A. General: Indicated locations are approximate; determine exact locations before
commencing Work.
B. Arrange and pay for disconnecting, removing, capping, and plugging utility
services. Notify affected utility companies in advance and obtain approval before
starting this Work.
C. Place markers to indicate location of disconnected services. Identify service lines
and capping locations on Project Record Documents.
PART 2 PRODUCTS (Not Applicable)
PART 3 EXECUTION
3.1 SITE CLEARING
A. General: Remove trees, shrubs, grass, and other vegetation, improvements, or
obstructions, as required, to permit installation of new construction. Remove
similar items elsewhere on site or premises as specifically indicated. Removal
includes digging out and off -site disposal of stumps and roots.
1. Cut minor roots and branches of trees indicated to remain in a clean and
careful manner where such roots and branches obstruct installation of new
construction.
B. Topsoil: Topsoil is defined as friable clay loam surface soil found in a depth of not
-- less than 4 inches. Satisfactory topsoil is reasonably free of subsoil, clay lumps,
stones, and other objects over 2 inches in diameter, and without weeds, roots, and
other objectionable material.
1. Strip topsoil to whatever depths encountered in a manner to prevent
intermingling with underlying subsoil or other objectionable material.
Remove heavy growths of grass from areas before stripping.
a. Where existing trees are indicated to remain, leave existing topsoil in
place within drip lines to prevent damage to root system.
2. Stockpile topsoil in storage piles in areas indicated or directed. Construct
storage piles to provide free drainage of surface water. Cover storage piles,
if required, to prevent wind erosion.
3. Dispose of unsuitable or excess topsoil as specified for disposal of waste
material.
C. Clearing and Grubbing: Clear site of trees, shrubs, and other vegetation, except
for those indicated to be left standing.
1. Completely remove stumps, roots, and other debris protruding through
ground surface.
2. Use only hand methods for grubbing inside drip line of trees indicated to
remain.
3. Fill depressions caused by clearing and grubbing operations with satisfactory
soil material, unless further excavation or earthwork is indicated.
02110 -2
RIVERCAHSE ELEMENTARY SCHOOL
Coppeff, Texas
a. Place fill material in horizontal layers not exceeding 6 inches loose
depth, and thoroughly compact each layer to a density equal to
adjacent original ground.
D. Removal of Improvements: Remove existing above -grade and below -grade
improvements as indicated and as necessary to facilitate new construction.
1. Abandonment or removal of certain underground pipe or conduits may be
indicated on mechanical or electrical drawings and is included underwork of
related Division 15 and 16 Sections. Removing abandoned underground
piping or conduits interfering with construction is included underthis Section.
3.2 DISPOSAL OF WASTE MATERIALS
A. Burning on Owner's Property: Burning is not permitted on Owner's property.
B. Removal to Owner's Spoil Area: Transport waste materials and unsuitable topsoil
materials to designated spoil areas on Owner's property and dispose of as
directed.
C. Removal from Owner's Property: Remove waste materials and unsuitable or
excess topsoil from Owner's property.
END OF SECTION 02110
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02110 -3
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 02200 — SITE EARTHWORK
PART1 GENERAL
1.1 Geotechnical Report: Perform earthwork complying with the requirements of
Geotechnical Report for the site.
A. Codes and Standards: Perform earthwork complying with requirements of
authorities with jurisdiction.
B. Existing Utilities: Do not interrupt existing utilities serving facilities occupied by the
Owner or others except when permitted in writing by the Engineer and then only
after acceptable temporary utility services have been provided.
C. Limits of this section: This section shall include earthwork on site outside of
building pad areas. Refer to structural section for building pad requirements.
D. Reference Specification for earthwork and related products shall be the "Standard
Specifications for Public Works Improvements ", latest edition as published by the
North Central Texas Council of Governments. (NCTCOG)
I PART PRODUCTS
2.1 Soil Materials: Provide approved borrow soil materials from off site when sufficient
approved soil materials are not available from excavations.
2.2 Satisfactory Soil Materials: ASTM D 2487 soil classification groups GW, GP, GM, SW,
SP, and SM; free of rock or gravel larger than 2 inches in any dimension, debris, waste,
frozen materials, vegetation, or other deleterious matter.
2.3 Unsatisfactory Soil Materials: ASTM D 2487 soil classification groups GC, SC, ML, MH,
CL, CH, OL, OH, and PT.
PART 3 EXECUTION
3.1 Preparation: Protect structures, utilities, sidewalks, pavements, and other facilities from
damage caused by settlement, lateral movement, undermining, washout, and other
hazards created by earthwork operations.
3.2 Provide erosion and sedimentation control measures.
3.3 Prevent surface water and subsurface or ground water from entering excavations, from
ponding on prepared subgrades, and from flooding Project site and surrounding area.
3.4 Protect subgrades and foundation soils from softening and damage by rain or water
accumulation and from freezing temperatures or frost.
3.5 Explosives: Do not use explosives.
3.6 Unclassified Excavation: Excavation is unclassified and includes excavation to required
subgrade elevations regardless of character of materials and obstructions encountered.
02200 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
3.7 Compaction: 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. Place evenly
alongside structures and utilities to required elevations.
3.8 Compact soil to not less than the following percentages of maximum dry density
according to ASTM D 698:
A. Under lawn or unpaved areas, compact the top 6 inches below subgrade and each
r layer of backfill or fill material to 90 percent.
B. Under walkways and pavement, compact the top 6 inches below subgrade and
each layer of backfill or fill material to 95 percent.
END OF SECTION 02200
02200 -2
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RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 02221 - BACKFILLING & COMPACTION FOR SITE
1.1 GENERAL
A. Geotechnical Report: Perform earthwork complying with the requirements of
Geotechnical Report for the site.
B. Codes and Standards: Perform earthwork complying with requirements of
authorities with jurisdiction.
C. Existing Utilities: Do not interrupt existing utilities serving facilities occupied by the
Owner or others except when permitted in writing by the Engineer and then only after
acceptable temporary utility services have been provided.
D. Limits of this section: This section shall include earthwork on site outside of building
pad areas. Refer to structural section for building pad requirements.
E. Reference Specification for earthwork and related products shall be the "Standard
Specifications for Public Works Improvements ", latest edition as published by the
North Central Texas Council of Governments. (NCTCOG)
2.1 PRODUCTS
A. Soil Materials: Provide approved borrow soil materials from off site when sufficient
approved soil materials are not available from excavations.
B. Satisfactory Soil Materials: ASTM D 2487 soil classification groups GW, GP, GM,
SW, SP, and SM; free of rock or gravel larger than 2 inches in any dimension,
debris, waste, frozen materials, vegetation, or other deleterious matter.
C. Unsatisfactory Soil Materials: ASTM D 2487 soil classification groups GC, SC, ML,
MH, CL, CH, OL, OH, and PT.
3.1 EXECUTION
A. Preparation: 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. Provide erosion and sedimentation control measures.
C. Prevent surface water and subsurface or ground water from entering excavations,
from ponding on prepared subgrades, and from flooding Project site and surrounding
END OF SECTION 02221
02221 -1
area.
D.
Protect subgrades and foundation soils from softening and damage by rain or water
accumulation and from freezing temperatures or frost.
^,
E.
Explosives: Do not use explosives.
F.
Unclassified Excavation: Excavation is unclassified and includes excavation to
required subgrade elevations regardless of character of materials and obstructions
encountered.
G.
Compaction: 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.
Place evenly alongside structures and utilities to required elevations.
H.
Compact soil to not less than the following percentages of maximum dry density
according to ASTM D 698:
1. Under lawn or unpaved areas, compact the top 6 inches below subgrade and
each layer of backfill or fill material to 90 percent.
2. Under walkways and pavement, compact the top 6 inches below subgrade
and each layer of backfill or fill material to 95 percent.
END OF SECTION 02221
02221 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 02520 - PORTLAND CEMENT CONCRETE PAVING
1.1 GENERAL
A. Extent of portland cement concrete paving is shown on drawings, including curbs,
gutters, walks, and paving.
B. Prepared subbase is specified in "Earthwork" section.
C. Concrete and related materials are specified below.
D. Joint fillers and sealers are as specified on the Plans.
E. Traffic Control: Maintain access for vehicular and pedestrian traffic as required for
other construction activities. Provide barricading as required by Manual of Uniform
Traffic Control Devices, latest edition, as published by the Texas Department of
Transportation.
F. Reference Specification for concrete and related products shall be the "Standard
Specifications for Public Works Improvements ", latest edition as published by the
North Central Texas Council of Governments. ( NCTCOG)
2.1 PRODUCTS
A. Concrete Materials: Comply with requirements of NCTCOG Section 2.2 for concrete
materials, admixtures, bonding materials, curing materials, and others as required.
All concrete, unless noted, shall be Class "A ".
B. Antispalling Compound: Boiled linseed oil and mineral spirits, complying with
AASHTO M -233.
C. Curing and Sealing Compound: ASTM C 309, Type 2, Class B.
D. Concrete Mix, Design, and Testing: Comply with requirements of applicable
NCTCOG sections for concrete mix design, sampling and testing, and quality control
and as herein specified.
E. Paint Striping: Paint for pavement striping shall conform to NCTCOG Section 2.9.1
(d) color as shown on plans.
F. Fly ash shall not be allowed.
3.1 EXECUTION
A. Place concrete in accordance with NCTCOG Section 5.8.2.
B. Joints: Construct expansion, sawed dummy and construction joints true to line with
face perpendicular to surface of concrete. Construct transverse joints at right angles
to centerline unless otherwise indicated. Spacing shall be as shown on the plans.
C. Pavement strength and thickness testing shall be per NCTCOG Section 5.8.6.
END OF SECTION 02520
02520 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 02720 - STORM SEWERAGE
r
1.1 GENERAL
s A. Reference Specification for storm sewerage and related products shall be the
"Standard Specifications for Public Works Improvements ", latest edition as published
by the North Central Texas Council of Governments. ( NCTCOG)
B. Utility Compliance: Comply with local utility regulations and standards pertaining to
storm sewerage.
2.1 PRODUCTS
A. Pipe material as indicated on plans and in conformance with NCTCOG Sections
2.12.3.1 or 2.12.13.
B. Concrete: Portland cement mix, Class ❑A❑ ( NCTCOG Section 2.2), except where
noted.
1. Cement: ASTM C 150, Type II.
2. Fine Aggregate: ASTM C 33, sand.
3. Coarse Aggregate: ASTM C 33, crushed gravel.
4. Water: Potable.
C. Reinforcement: Steel conforming to the following:
1. Reinforcement Bars: ASTM A 615, Grade 60, deformed.
D. Plastic Underground Warning Tapes: Polyethylene plastic tape, 6 inches wide by 4
mils thick, solid green in color with continuously - printed caption in black letters
"CAUTION - SEWER LINE BURIED BELOW."
E. Inlets, headwall and catch basins shall be in accordance with local requirements.
3.1 EXECUTION
A. Complete work in conformance with local requirements and manufacturers'
recommendations and NCTCOG Section 6.7.
B. Inlets, headwall and catch basins shall be installed in accordance with local
requirements.
END OF SECTION 02720
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02720 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 02250 — SCREW ANCHOR FOUNDATIONS
1.1 SCOPE
These specifications are for the fabrication of steel screw anchor foundations, and shall be
regarded as minimum standards for fabrication. These specifications are based on products
design and manufactured by the AB Chance Company or an approved equal supplier.
A. Related Sections: Sections(s) related to this section include:
1. Excavating (excavating to work level): Division 2 Earthwork Sections.
2. Pile Load Tests (requirements for screw anchor load test): Divisions 2
screw anchor installation.
r- 1.2 REFERENCES
A. General: Standards listed by reference, including revisions by issuing authority, form
a part of this specifications section to extent indicated. Standards listed are
identified by issuing authority, authority abbreviation, designation number, title or
other designation established by issuing authority. Standards subsequently
referenced herein are referred to by issuing authority abbreviation and standard
designation.
B. American Society for Testing and Materials (ASTM):
1. ASTM A29/A29M Steel bars, Carbon and Alloy, Hot - Wrought and cold
finished.
2. ASTM A36/A36M Structural Steel.
3. ASTM A53 Pipe, Steel, Black and Hot - Dipped, Zinc - Coated Welded and
Seamless.
4. ASTM A153 Zinc Coating (Hot Dip) on Iron and Steel Hardware.
5. CASTM All 93/A 193M Alloy —Steel and Stainless Steel Bolting Materials for
High Temperature Service.
6. ASTM A252 Welded and Seamless Steel Pipe Piles.
7. ASTM A320 /A320M Alloy -Steel Bolting Materials for Low - Temperature
Y Service.
8. ASTM A500 Cold- Formed Welded and Seamless Carbon Steel Structural
Tubing in Rounds and Shapes.
9. ASTM A572 HSLA Columbium- Vanadium Steels of Structural Quality.
10. ASTM A618 Hot - Formed Welded and Seamless High- Strength Low -Alloy
Structural Tubing.
11. ASTM A656 Hot - Rolled Structural Steel. High- Strength Low -Alloy Plate with
Approved Formability.
12. ASTM A935 Sheet and Strip, Heavy Thickness Coils, High- Strength,
Low - Alloy, Columbium or Vanadium, or Both, Hot - Rolled.
13. ASTM A936 Steel, Sheet Strip, Heavy Thickness Coils, High- Strength, Low
Alloy, Hot - Rolled, with Improved Formability.
C. Society of Automotive Engineers (SAE):
1. SAE J429 Mechanical and Material Requirements for Externally Threaded
Fasteners.
1.3 DEFINITIONS
A. Screw Anchor: The screw anchor foundation system shall consist of steel screw
anchors with one or more true -helix shaped steel plates attached to a central steel
shaft. Extend anchors by adding shaft extensions.
02250 -1
1.6 QUALITY ASSURANCE
A. Installer Qualifications: Installer experienced in performing work of this section who
has specialized in installation of work similar to that required for this project.
1. Installer: Certified AB Chance dealer or an approved equal Supplier with
documented certification.
B. Preinstallation Meetings: Conduct preinstallation meeting to verify project
requirements, substrate conditions, manufacturer's installation instructions and
manufacturer's warranty requirements. Comply with Division 1 Project Management
and Coordination (Project Meetings) Section.
'- 1.7 WARRANTY
A. Project Warranty: Refer to Conditions of the Contract for project warranty provisions.
B. Manufacturer's Warranty: Submit, for Owner's acceptance, manufacturers warranty
document executed by authorized company official. Manufacturer's warranty is in
addition to, and not a limitation of, other rights Owner may have under Contract
Document.
1. Warranty Period:: The performance of the screw anchor foundations shall be
20 years commencing on Date of Substantial Completion.
2. The warranty period shall apply to the complete screw anchor foundation
assembly including but not limited to, screw anchor plate, screw anchor
shaft, bolts, and steel bracket.
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02250 -2
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
1.4 SYSTEM
DESCRIPTION
A.
Design Requirements: Design screw anchor application by a certified AB Chance
�-
dealer or designer, or a Professional Structural Engineer experienced in design of
this work and licensed (in the State of Texas).
1.5 SUBMITTALS
r` A.
General: Submit listed submittals in accordance with Conditions of the Contract.
B.
Product Data: Submit product data, including manufacturer's SPEC -DATA' product
sheet, for specified products.
r~ C.
Shop Drawings: Submit shop drawings showing profiles and product components,
including anchorage and accessories.
D.
Quality Assurance Submittals: Submit the following:
r-
1. Test Reports: Certified test reports showing compliance with specified
characteristics and physical properties.
2. Manufacturer's Instructions: Manufacturer's installation instructions.
E.
Closeout Submittals: Submit the following:
1. Warranty: Warranty documents specified herein.
2. Record Documents: Project record documents for installed materials in
accordance with Division 1 Closeout Submittals (Project Record Documents)
r
Section.
a. Accurately record the following: Type (number and size of helices)
and size; actual locations of screw anchors, anchor diameter and
anchor length, installation angle below horizontal; extension length
along shaft and datum; anchor testing (if required); torque installation
records on all screw anchors and torque monitoring calibration data.
1.6 QUALITY ASSURANCE
A. Installer Qualifications: Installer experienced in performing work of this section who
has specialized in installation of work similar to that required for this project.
1. Installer: Certified AB Chance dealer or an approved equal Supplier with
documented certification.
B. Preinstallation Meetings: Conduct preinstallation meeting to verify project
requirements, substrate conditions, manufacturer's installation instructions and
manufacturer's warranty requirements. Comply with Division 1 Project Management
and Coordination (Project Meetings) Section.
'- 1.7 WARRANTY
A. Project Warranty: Refer to Conditions of the Contract for project warranty provisions.
B. Manufacturer's Warranty: Submit, for Owner's acceptance, manufacturers warranty
document executed by authorized company official. Manufacturer's warranty is in
addition to, and not a limitation of, other rights Owner may have under Contract
Document.
1. Warranty Period:: The performance of the screw anchor foundations shall be
20 years commencing on Date of Substantial Completion.
2. The warranty period shall apply to the complete screw anchor foundation
assembly including but not limited to, screw anchor plate, screw anchor
shaft, bolts, and steel bracket.
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02250 -2
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
PART 2 — PRODUCTS
2.1 SCREW ANCHOR FOUNDATIONS
A. Preapproved Manufacturer: AB Chance Company, a subsidiary of Hubbell Corp., as
ISO 9001 company.
Contact: 210 North Allen Street, Centralia, MO 65240 -1395; Telephone (573) 682-
8414; Fax: (573) 682 -8660.
B. Proprietary System: AB Chance HELICAL PIER Foundation Systems.
2.2 PRODUCT SUBSTITUTIONS
A. Substitutions: Approved equal product with specifications and performance
equivalent or better than product specified. Product must be submitted for approval.
2.3 MANUFACTURED COMPONENTS
A. Components
1. Screw Anchor Plate:
5500 ft lb (760 kg /m) Anchors: Low- carbon steel meeting the general
requirements of AISI, or ASTM A572, ASTM A935, AASTM A656 or ASTM
A936.
2. Screw Anchor Shaft:
5500 ft lb (760) kg /m) Anchors: Medium - carbon round - comered square steel
bar meeting dimensional and workmanship requirements of ASTM A29.
3. Bolts:
5500 and 7000 ft lb (760 and 968 kg /m) Anchors — Bolts: ASTM A320, Grade
.� L7.
4. Steel Bracket:
a. Lifting Bolts: SAE J429, Grade 5.
b. Cross Bolts: SAE J429, Grade 5.
5. Steel Bracket:
a. Bracket Body: Hot rolled steel, ASTM A36, ASTM A635, ASTM
A935, or ASTM A936.
b. Pipe Assembly: Steel tubing, ASTM A500.
2.4 SOURCE QUALITY
�= A. Source Quality: Obtain proprietary sharing and underpinning products from a single
manufacturer.
B. Tests, Inspections: As required by manufacturer.
C. Verification of Performance: Contractor shall submit copies of installation logs.
Manufacturer shall confirm installation was performed according to manufacturer
specifications.
PART 3 — EXECUTION
3.1 MANUFACTURER'S INSTRUCTIONS
A. Compliance: Comply with manufacturer's product data, including product technical
bulletins.
3.2 PREPARATION
A. Preparation:
1. Use placement method which will not cause damage to nearby structures.
r- 2. Prepare to place piles from existing site elevations.
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RIVERCAHSE ELEMENTARY SCHOOL
Coppe9, Texas
3.3 INSTALLATION
r— Reference Specification 02251 (Screw Anchor Installation).
3.4 FIELD QUALITY REQUIREMENTS
A. Site Tests: Monitor torque applied by the installing units during the entire installation.
B. Inspection: Field inspection and testing when required will be performed under
provisions of Division 1 Testing Requirements and as specified by manufacturer.
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3.5 PROTECTION
A. Protect installed product from damage during construction.
END OF SECTION 02250
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02250 -4
RIVERCAHSE ELEMENTARY SCHOOL
Coppep, Texas
SECTION 02251 — SCREW ANCHOR INSTALLATION
PART 1 — GENERAL
1.1 SCOPE
— A. The following are installation specifications for the boardwalk steel screw - anchor pier
foundations and shall be regarded as minimum standards for installation. These
specifications are based on products designed and manufactured by the AB Chance
Company or an approved equal supplier.
B. The Helical Steel Piers shall be installed to the manufacturer's specifications by a
qualified contractor.
C. All work as described herein shall be performed in accordance with all applicable
safety, codes, in effect at the time of installation.
D. The contractor shall employ a skilled, experienced work force who are familiar with
the requirements and methods necessary for proper performance of the work as
outlined in these specifications.
1.2 QUALIFIED SUPPLIER:
Each bidder is required to identify their intended screw anchor supplier. Qualified suppliers
must have at least 5 years of experience fabricating and installing this type of foundation
system.
Preapproved Manufacturer:
AB Chance Company
210 North Allen Street
Centralia, MO 65240 -1395
(573) 682 -8414; Fax: (573) 682 -8660
Preapproved Supplier:
Helical Concepts Incorporated
2318 Rockhill Rd.
McKinney, Texas 75070
1 (800) 577 -0114
_ PART 2 — PIER LOCATION
A. The Contractor shall submit the foundation layout and foundation calculations for
approval.
'— B. This submittal shall include, but is not limited to the following:
1. Spacing between the piers
2. Size and number of helices per pier
-'' 3. Minimum depth of the piers
4. Minimum final installation torque
C. Helical piers should be installed as shown on the manufacturer's shop drawings.
PART 3 — PIER SELECTION
A. The helical lead sections and extensions shall be manufactured by the A.B. Chance
Company (or an approved equal) and as shown on the manufacturer's shop
drawings.
- B. All units shall conform to the material specifications, as referenced on the
manufacturer's shop drawings.
C. The size, number of helices, and depth of pier shall be as shown on the
,i
manufacturer's shop drawings.
02251 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
D. The Owner shall have the option of performing a soil test using either the A.B.
' Chance Soil Probe or other method approved by the engineer. The data acquired
along with other information available about the site shall be used in determining the
proper helical pier configuration.
PART 4 - INSTALLATION EQUIPMENT
r A. Installing Units
1. Installation units shall consist of a rotary type, torque motor with forward and
reverse capabilities. These units shall be hydraulically powered.
2. These units shall be capable of developing the minimum torque as required
' by the project.
3. These units shall be capable of positioning the helical pier at the proper
installation angle.
' ~ 4. These units shall be in good working condition and capable of being
operated in a safe manner.
B. Installation Tooling
1. Adapters approved by engineer shall be employed to safely connect the
installation units to the helical piers and extensions.
2. These adapters shall have a torque capacity rating at least equal to the
minimum torque rating of the helical piers as specified for the project.
3. These adapters shall be securely connected to the helical pier during
installation so as to prevent accidental separation.
C.
Torque Monitoring Devices
1. The torque being applied by the installing units shall be monitored throughout
the installation process.
_
2. Torque monitoring devices shall be either a part of the installing unit or an
independent device in -line with the installing unit. Calibration data for either
a-
unit shall be available for review by the owner or their representative.
PART 5 - INSTALLATION PROCEDURES
A.
The helical pier shall be positioned as shown on the manufacturer's shop drawings.
Proper angular alignment shall be established at the start of installation.
_ B.
The helical pier shall be installed in a smooth, continuous motion. The rate of pier
rotation shall be in the range of 5 to 20 revolutions, per minute.
C.
Sufficient down pressure shall be applied to advance the piers.
D.
Plain extension material may be required to position the pier at the depth specified
on the manufacturer's shop drawings. Extensions shall be coupled to the helical pier
using high strength structural bolts. These bolts shall be installed and tightened to
approximately 40 ft. lbs. of torque.
E.
Installation torque shall be monitored throughout the installation process.
F.
If underground obstructions are encountered during installation, the Contractor shall
have the option of removing the obstruction if possible or relocating the helical pier.
This latter option may require the relocation of adjacent piers.
PART 6 - TERMINATION OF INSTALLATION
A. Helical piers shall be installed to the minimum torque value as shown on the
manufacturer's shop drawings.
11YK-1W
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
B. The maximum installation torque shall at no time exceed the torque rating of the
�- helical pier shaft as specified for the project.
C. The minimum depth of installation shall be as shown on the manufacturer's shop
drawings provided the top helix is located at least five (5) feet below the surface. If
the installer can not achieve the depth the engineer should be contacted before
proceeding further.
D. The pier installation shall be terminated provided the minimum installation torque and
minimum depth requirements have both been satisfied.
1. If the minimum torque requirement has not been satisfied at the minimum
depth level, the Contractor shall have the following options:
a. Install the pier deeper using additional plain extension material until
the specified torque level is obtained, or
b. Remove the existing pier and install a pier with larger and /or more
helices. This revised pier shall be installed at least three (3) feet
beyond the termination depth of the original pier.
C. Add additional piers as recommended by engineer.
2. If the maximum torque rating of the pier and /or installing unit has been
reached prior to satisfying the minimum depth requirement, the Contractor
shall have the following options.
a. Terminate the installation at the depth obtained with the approval of
the Engineer, or
b. Remove the existing pier and install a pier with smaller and /or fewer
helices. This revised pier shall be installed at least three (3) feet
beyond the termination depth of the original pier.
PART 7 — CONNECTION BEAM BRACKET
A. The helical pier shall be connected to the structure using an A.B. Chance Company
(or approved supplier) approved steel bracket.
B. This connection device shall be capable of safely transferring the structural loads to
the helical pier.
PART 8— INSTALLATION RECORDS
Written installation records shall be obtained for each helical pier. These records shall
include, but are not limited to the following:
A. Project name and /or location
B. Name of Contractor
C. Name of Contractor's foreman or representative who witnessed the installation
D. Date and time of installation
E. Location and reference number of helical pier
F. Descriptions of lead section and extensions installed
G. Overall depth of installation as referenced from bottom of boardwalk beam
H. Torque readings for the last three (3) feet of installation if practical. In lieu of this
requirement, the termination torque shall be recorded as a minimum.
I. Any other applicable information relating to the installation
PART 9 — HELICAL PIER TESTING
A. Testing shall be required only if specified on the manufacturer's shop drawings to
ensure the design tension and bearing capacity, or if so warranted by unusual
subsurface conditions.
02251 -3
END OF SECTION 02251
02251 -4
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
•r-
B.
Testing, if required, shall be performed in accordance with approved procedures and
r
specifications.
C.
The number and location of the test(s) shall be determined based on site and
subsurface conditions. It may be practical to test a production pier.
r D.
The test equipment shall be capable of applying a compression load equal to the
greater of the pier's, ultimate capacity or the safety factored load (usually 200% of
the design working load as indicated on the manufacturer's shop drawings). This
safety factored load shall be determined prior to testing.
E.
If the compression test requires additional helical anchors for reaction piers, these
anchors shall be installed to the same torque requirements as the helical test pier.
F.
The helical pier shall be tested to the greater of the safety factored load or its
—
ultimate capacity. The ultimate capacity shall be defined as the maximum load the
helical pier can sustain without continuous movement.
G.
Acceptance criteria including load versus displacement shall be established prior to
testing.
H.
Test records shall include the following:
1. Items as outlined in Section VIII of this Specification
.-
2. Magnitude of applied load and corresponding displacements
PART 10 — MATERIAL SPECIFICATIONS
A.
SHAFT MATERIAL 1 '/z INCH RCS SOLID STEEL BAR
MINIMUM TORSIONAL STRENGTH — 5,000 FT. LBS.
ULTIMATE TENSILE STRENGTH — 70,000 LBS.
B.
HELICES HIGH STRENGTH, LOW -ALLOW MATERIAL FORMED ON
MATCHING METAL DIES TO TRUE HELICAL SHAPE
C.
BOLTS ASTM A320 GRADE L -7 OR APPROVED EQUIVALENT
D.
COUPLINGS FORMED AS AN INTEGRAL PART OF EXTENSION
MATERIAL
E.
BRACKET HOT ROLLED STEEL PLATE CONFORMING TO ASTM A36
CONFIGURATION AS APPROVED BY THE A.B. CHANCE
COMPANY FOR USE WITH HELICAL PIERS
F.
WELDING ALL WELDING SHALL BE IN ACCORDANCE WITH AWS
D1.1, LATEST REVISION.
G.
FNISH ALL MATERIAL SHALL BE HOT DIPPED GALVANIZED IN
ACCORDANCE WITH ASTM A153
END OF SECTION 02251
02251 -4
r RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
SECTION 06500 — PREFABRICATED STRUCTURAL PLASTICS
PART 1 —GENERAL
1.1 SCOPE
A. This section covers the labor, materials, equipment, and services needed for the
construction/ installation of the boardwalk composite decking, complete as
indicated on the shop drawing layout and details.
B. Work in this section shall be coordinated with work items specified below and
overall project schedule activities.
1.2 RELATED WORK SPECIFIED ELSEWHERE
A. SECTION 02250 — SCREW ANCHOR FOUNDATIONS
B. SECTION 02251 —SCREW ANCHOR INSTALLATION
1.3 SUBMITTALS
A. Shop Drawings
1. Submit shop drawings illustrating complete design, layout, and
construction detailing for the construction/ installation of the boardwalk
composite decking.
B. Product Data
1. Submit manufacturer's literature on all products.
2. Submit manufacturer's installation instructions.
3. Submit Materials Safety Data Sheet (MSDS)
C. Samples
'^ 1. Submit 2 samples of the composite decking material.
2. Submit manufacturer's standard color availability for the composite
decking material.
1.4 WARRANTY
A. Project Warranty: Refer to Conditions of the Contract for project warranty
provisions.
B. Manufacturer's Warranty: Submit, for Owner's acceptance, manufacturer's
warranty document executed by authorized company official. Manufacturer's
warranty is in addition to, and not a limitation of, other rights Owner may have
under Contract Document.
1. Warranty Period:
A. The performance warranty for the boardwalk composite decking
shall be 10 years commencing on Date of Substantial Completion.
B. The warranty for all construction work including craftsmanship
shall be 1 year commencing on Date of Substantial Completing.
PART 2 — PRODUCTS
2.1 BOARDWALK COMPOSITE DECKING
A. Pre - approved Products
1. TREX Composite Decking
a. Approved Supplier
Himes & Starr
4126 West Davis
Dallas, Texas 75211
r' (214) 331 -4301
06500 -1
RIVERCAHSE ELEMENTARY SCHOOL
Coppell, Texas
06500 -2
2. TIMBERTECH Composite Decking
--
a. Approved Supplier
Dixie Ply
3060 Miller Rd.
Garland, Texas 75046
(972) 271 -4607
2.2
PRODUCT SUBSTITUTIONS
A. Substitutions: Approved equal product with specifications and performance
equivalent or better than product specified. Product must be submitted for approval.
PART 3 — EXECUTION
3.2
MANUFACTURER'S INSTRUCTIONS
A. Compliance: Comply with manufacturer's product data, including product technical
bulletins.
3.2
PREPARATION
A. Use placement method that will not cause damage to nearby structures.
3.3
INSTALLATION
.-
A. Install per manufacturer's recommendations.
3.4
PROTECTION
A. Protect installed product from damage during construction.
06500 -2
Schedule of Construction Quantities and Bidders Unit Costs
PAVING AND DRAINAGE IMPROVEMENTS
ITEM
UNIT QUANTITY UNIT PRICE
TOTAL PRICE
STORM DRAINAGE
-- 5'x3' Box Culvert
LF 30 $
$
Type "B" Headwall
EA 1 $
$
SUB -TOTAL STORM DRAINAGE
$
SITE GRADING IMPROVEMENT
Grading (FILL)
CY 693 $
$
Grading (CUT)
CY 16
Erosion Control
LS 1 $
$
SUB -TOTAL GRADING WORK
$
SIDEWALK IMPROVEMENTS
Saw Cut Ex. Pavement
LF 36 $
$
4" Concrete Sidewalk
SF 2,551 $
$
Barrier Free Ramp
EA 2 $
$
Elevated 8' Sidewalk & Foundation
LF 497 $
$
SUB -TOTAL SIDEWALK IMPROVMENTS
$
STORM DRAINAGE
$
GRADING WORK
$
SIDEWALK IMPROVEMENTS
$
TOTAL BID
$
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