Section_J_-Att_No__001_Specifications.pdf

Scope of Work

Replace and Repair Bleacher Railings

San Francisco Maritime National Historical Park (SAFR)

San Francisco, California

Table of Contents

1.0 General Information

2.0 General Requirements

3.0 Submittals

4.0 Accident Prevention

5.0 Quality Control

6.0 Project Specifications

7.0 Submittals

8.0 Inspection/Acceptance

9.0 Contracting Officers Authority

10.0 Images/Drawing

Replace/Repair Aquatic Park Bleacher Railings

General Information 1.0

1.1 Provide all labor, materials and equipment as required for complete, finished installation of metalwork as shown provided drawings, maps and specified in the description of work regarding the Aquatic Park Bleacher railings of designated sections, including (1) the repair and replacement of entire sections; and (2) rust removal and coatings application of other designated sections.

1.2 Contractor use of area:

A. Inspections and work performed onsite by contractor shall be during the business hours of 7:00 am-4:00pm Monday through Friday excluding Federal holidays.

Following the notice to proceed, the contractor shall communicate with the

Contracting Officer Representative (COR) to schedule any site visits necessary to proceed with work.

B. Contractor shall always conduct operations to ensure the least inconvenience to the public, staff and occupants. No closures of sidewalks or parking spaces will be permitted without specific approval of Contracting Officer.

C. Preservation of Historic Structures: Work at this site shall meet The Secretary of the Interior’s Standards for the Treatment of Historic Properties and shall be performed using the gentlest methods possible to remove and replace materials so as to retain the integrity of the Historic fabric of the property.

D. Work site shall be kept clean and free of debris, and secure at the end of each workday.

1.3 Field Verification: It is highly recommended that the contractor verify all relative dimensions, conditions, and location prior to submitting estimates, and work schedules.

1.4 The Government will furnish non-potable water on site.

1.5 Except as noted above all equipment, supplies and materials needed to execute this contract will be furnished and provided by contractor.

1.6 The contractor shall furnish and provide all materials needed for work in accordance with this specification.

1.7 If needed, temporary storage of materials at the worksite is authorized outside of

Government facilities in a contractor-owned/leased container. The contractor shall be responsible for securing container. The government shall not be liable for theft, damage or vandalism that occurs to the contractors storage container or the belongings contained therein.

1.8 The contractor shall remove and dispose any debris from the worksite daily and at own expense.

1.9 Contractor shall remove and dispose of any waste generated from work at own expense.

1.10 The contractor will ensure that any materials brought to the worksite are used in accordance with manufacturer’s instructions.

General Requirements:

2.1 The contractor performing this work must possess a valid California A (General

Engineering Contractor), B (General Building Contractor), or C-60 (Welding Contractor), Contractor’s License.

2.2 Data and information furnished or referred to herein is for the contractor’s information.

The Government shall not be responsible for any interpretation of or conclusion drawn from the data or information by the contractor.

2.3 The contractor shall hold and save the Government, it’s officers and agents, free and harmless from liability of any nature occasioned by the contractor’s performance.

2.4 The contractor shall immediately notify the Contracting Officer of any ambiguities, inconsistencies and errors discovered in this specification or between contracting documents and existing conditions.

2.5 Work will not begin, nor will timelines be set prior to the preconstruction conference.

2.6 Preconstruction Conference:

A. Before start of construction, Contracting Officer will arrange an on-site meeting with Contractor and Contracting Officers Representative. All required forms for submittals and project execution will be provided at this meeting. The meeting agenda will include the following as a minimum:

i. Correspondence procedures

ii. Designation of responsible personnel

iii. Labor standards provisions

iv. Payroll reports

v. Changes

vi. Payments to Contractor

vii. Subcontractors

viii. National Park Service regulations

ix. Accident prevention program (including name of responsible supervisor)

x. Accident reporting

xi. Documents required under the contract

xii. Park rules and regulations

xiii. Safety program (compliance with the "Accident Prevention" section of this document)

xiv. Tentative construction schedule

xv. Submittal of shop drawings, project data, samples, and approved equals

xvi. Project closeout requirements

2.7 Progress Meetings:

A. The Contracting Officer and COR will work with Contractor to schedule meetings as necessary on a regular timeline with the Contractor and subcontractors.

B. Subcontractors will not be allowed to work until they have attended a meeting.

C. Additional meetings will be held as needed or for new subcontractors.

D. The meeting agenda will include the following as a minimum:

i. Approval of minutes of previous meetings

ii. Review of work progress

iii. Field observations, problems, and decisions

iv. Identification of problems which impede planned progress

v. Review of submittals schedule and status of submittals

vi. Review of off-site fabrication and delivery schedules

vii. Status of project record drawings (monthly)

viii. Status of operation and maintenance data manuals (monthly)

ix. Maintenance of progress schedule

x. Corrective measures to regain projected schedules

xi. Planned progress during succeeding work period

xii. Coordination of projected progress

xiii. Maintenance of quality and work standards

xiv. Effect of proposed changes on progress schedule and coordination

xv. Other business relating to work

Submittals:

3.1 Description:

A. The work of this section consists of submittal requirements before and during construction.

B. Form CM-16 will be used for all transmittals.

3.2 Submittal and Approval Procedures:

A. As specified in the individual sections, the following shall be provided to the

National Park Service Contracting Officer and Contracting Officer’s

Representative prior to receiving a Notice to Proceed but no later than four weeks after contract award.

i. Workflow Plan: A step by step plan for work related operations and how these will be organized and proceed.

ii. Samples: Cut sheets and/or product sheets of each material/supply the contractor shall use for this work.

iii.Accident Prevention Plan. This plan will address the health and safety of contractor workers, NPS staff and the public concerning the work on site.

The Contractor must ensure that the procedures, methods and materials used in this project are compliant with OSHA standards and best practices for employee and site safety. This plan must include site specific mitigations, such as containing potentially airborne materials or products, and safety signage in order to keep staff and visitors safe during and after project hours. Plan must be submitted to park COR before any work is performed on the site.

B. Contracting Officer reserves the right to require submittals in addition to those called in individual sections.

C. Approved Equals:

i. For each item proposed as an “approved equal,” submit supporting data including:

1. Technical Data sheets on all preparation and painting products.

2. Comparison of the characteristics of the proposed item with that specified.

ii. A request for approval constitutes a representation that Contractor:

1. Has investigated the proposed item and determined that it is equal or superior in all respects to that specified.

2. Will provide the same warranties for the proposed item as for the item specified.

3. Has determined that the proposed item is compatible with interfacing items.

4. Will coordinate the installation of an approved item and make all changes required in other elements of the work because of the substitution.

5. Waives all claims for additional expenses that may be incurred as a result of the substitution.

D. Coordinate all submittals and review them for legibility, accuracy, completeness, and compliance with contract requirements. Forward submittals that are related to or affect one another as a package to facilitate coordinated review. Each transmittal shall contain only data specific to that individual submittal.

3.3 Submittal Identification:

A. Identification shall include the park name-package number, project title, contract number, and transmittal number.

B. Identification information on samples shall be applied to the most readily visible area on the sample or on tags attached to sample.

3.4 Submittal Numbering:

A. Number each submittal consecutively.

B. For re-submittals use the original submittal number, plus a letter suffix beginning with A.

C. Additional re-submittals of the same item shall contain the original number with the next consecutive letter.

3.5 Contracting Officer’s Review:

A. Submittals will be returned disapproved without technical review if identification information is missing, not filled in, or if placed on the back of the submittal; an incorrect number or format of submittals is provided; the transmittal form is incorrectly filled out; submittals are not coordinated; or submittals do not show evidence of Contractor’s approval. Form will be provided at preconstruction meeting.

B. Any work done or orders for materials or services placed before approval shall be at the Contractor’s own risk.

C. After reviewing submittal, the Contracting Officer will return one copy of form

DSC-1 (CS) and one copy of applicable (marked up) submittal sheets to the

Contractor. Shop drawing review notations will be returned on the reproducible original shop drawing. All other submitted items will be retained. The Contractor is responsible for producing additional copies for his/her own use.

D. The returned submittal will be marked in one of three ways as defined below:

i. APPROVED: Acceptable with no corrections.

ii. APPROVED WITH NOTATIONS: Minor corrections or clarifications required. All comments are clear, and no further review is required. The

Contractor shall address all review comments when proceeding with the work.

iii. DISAPPROVED - RESUBMIT: Rejected as not in accordance with the contract or as requiring major corrections or clarifications. The Contracting

Officer will identify the reasons for disapproval. The Contractor shall revise and resubmit with changes clearly identified.

Accident Prevention

4.1 Description:

A. The work of this section consists of establishing an effective accident prevention plan and providing a safe environment for all personnel and visitors.

4.2 Submittals:

A. Accident Prevention Plan: Before on-site work begins, submit for approval an accident prevention plan. The Contracting Officer and Contracting Officer’s

Representative will review the proposed program for compliance with OSHA and project requirements. If the plan requires any revisions or corrections, the

Contractor shall resubmit the plan within 10 days. No progress payments will be made until the program is approved. The program shall include:

i. Name of responsible supervisor to carry out the plan.

ii. Weekly and monthly safety meetings.

iii. First aid procedures.

iv. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to ensure property protection and safety of the public, National Park Service personnel, and Contractor's employees.

Identify the work included under each phase. Specifically identify the methods of protecting workers and visitors from exposure to lead paint hazard.

v. Include possible environmental hazards and mitigations with each phase of work performed.

vi. Applicable training, both initial and continuing.

vii. Planning for possible emergency situations, such as floods, fires, slides, power outages, and wind and rainstorms. Such planning shall take into consideration the nature of the project, site conditions, and degree of exposure. Consult COR if needed.

viii. Plan must include protocols to follow Federal, State and local guidelines and orders as is relates to the Covid-19 pandemic. At a minimum, plan should contain measures on proper sanitation and hygiene, social distancing protocol, and actions taken to protect employees, vulnerable populations and the community at large as it pertains specifically to the contracted scope of work.

B. Certificates: Provide certificates from a mechanic that all mechanical equipment to be used (if applicable) has been inspected and meets OSHA requirements.

C. Submit evidence of Contractor workers have knowledge of OSHA standards of working with Lead in Construction procedures.

D. Submit a report of safety meetings and safety inspections.

E. Upon request, submit proof of employees' qualifications to perform assigned duties in a safe manner.

4.3 Quality Assurance:

A. In case of conflicts between Federal, state, and local safety and health requirements, the most stringent shall apply. Equipment or tools not meeting

OSHA requirements will not be allowed on the project sites. Failure to comply with the requirements of this section and related sections may result in suspension of work.

B. Qualifications of Employees:

i. Ensure that employees are physically qualified to perform their assigned duties in a safe manner.

ii. Do not allow employees to work whose ability or alertness is impaired because of drugs, fatigue, illness, intoxication, or other conditions that may expose themselves or others to injury.

iii. Operators of vehicles, mobile equipment shall be able to understand signs, signals, and operating instructions, and be capable of operating and setting up such equipment. Provide operating instructions for all equipment. Newly hired operators shall be individually tested by an experienced operator or supervisor to determine if they are capable of safely operating equipment.

4.4 Accident Reporting:

A. Reportable Accidents: A reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, property damage and fires.

Notify Contracting Officer’s Representative immediately in the event of a reportable accident. Within 7 days of a reportable accident, fill out and forward to

Contracting Officer an Accident/Property Damage Report (Form CM-22). Form may be obtained from the Contracting Officer and COR.

B. In the event of an emergency DIAL 9-1-1. The contractor shall contact US Park

Police Emergency dispatch immediately (1-415-561-5656) and the Contracting

Officer and COR as soon as possible. Outside of an emergency, any hazardous or unsafe conditions shall be reported to the COR as soon as possible. All hazardous or unsafe conditions shall be red tagged immediately to ensure a safe environment for all staff and visitors. A follow up report to the Contracting Officer shall be made within 24 hours.

4.5 First Aid Facilities:

A. Provide adequate facilities for the number of employees and the type of construction at the site.

4.6 Emergency Instructions:

A. Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

4.7 Egress:

A. Provide and maintain adequate egress at all times in accordance with the Life

Safety Code (NFPA 101). No corridor, aisle, stairway, door, or exit shall be obstructed or used in a manner that interferes with egress. Main sidewalks and paths must not be blocked off entirely to the public.

4.8 Protective Equipment:

A. Inspect personal protective equipment daily and maintain in a serviceable condition. Clean, sanitize, and repair, as appropriate, personal items before issuing them to another individual.

B. Inspect and maintain other protective equipment and devices before use and on a periodic basis to ensure safe operation.

4.9 Safety Meetings:

A. A monthly Safety Meeting must be scheduled with the project COR. These meetings shall be used to review the effectiveness of the Contractor's safety effort, to resolve current health and safety problems, to provide a forum for planning safe construction activities, and for updating the accident prevention program.

4.10 Training:

A. First Aid: Provide adequate training to ensure prompt and efficient first aid.

B. Hazardous Material: Train and instruct each employee exposed to hazardous material in safe and approved methods of handling and storage. Hazardous materials are defined as explosive, flammable, poisonous, corrosive, oxidizing, irritating, or otherwise harmful substances that could cause death or injury. In this case the potential hazard is lead based paint.

Quality Control

5.1 General: The quality of all work shall be the responsibility of the Contractor. Inspect and test all work often enough to ensure that the quality of materials, workmanship, construction, finish, and functional performance is in compliance with applicable specifications and drawings.

5.2 Quality Control Staff: The Contractor's job supervisory staff may be used for quality control, supplemented as necessary by additional technicians. The Contractor's designated Quality Control Supervisor shall be employed full time at the project site whenever contract work is in progress.

5.3 On-Site Control:

A. Preparatory: Perform before beginning each feature of work.

i. Review control submittal requirements with personnel directly responsible for the quality control work.

ii. Ensure that provisions have been made for field control testing.

iii. Examine the work area to ensure that all preliminary work has been completed.

iv. Verify all field dimensions and advise the Contracting Officer of discrepancies.

v. Ensure that necessary equipment and materials are at the project site and that they comply with approved products and submittals.

B. Initial: As soon as work begins, inspect and test a representative portion of a particular feature of work for quality of workmanship. Review control testing procedures to ensure compliance with contract requirements.

C. Follow-Up: Inspect and test as work progresses to ensure compliance with contract requirements until completion of work.

5.4 Documentation:

Maintain Daily Quality Control log of quality control activities and tests on Contractors QC daily report and submit weekly to COR. Form will be supplied at pre-construction meeting.

5.5 Enforcement:

A. The Contractor shall stop work on any item or feature pending satisfactory correction of any deficiency noted by the quality control staff or the Contracting

Officer. Work shall not proceed on any feature of work containing uncorrected work.

6.0 Project Specifications:

GENERAL

DESCRIPTION

Provide all labor, materials and equipment as required for complete, finished installation of metalwork as shown provided drawings, maps and specified in the description including the following items: Bleacher railings

6.1A REPLACE ENTIRE SECTIONS AND APPLY COATINGS (see map)

All pipe rail indicated on map below must be replaced in-kind with new material. Schedule 40 steel pipe must be used. Railings must be galvanized. Railing must be etched. (Contractor to provide submittal proof of completing these processes).

Fourteen (14) inches of 1-1/2” 316 stainless-steel pipe shall be welded to the bottom of each post. The bottom of each added stainless-steel section must installed be at least 2” above the concrete surface.

Railing must be welded to form one continuous railing section as currently orientated. All welds must be ground smooth for this purpose, for safe use by park visitors.

Existing bleacher railings must be removed and disposed of/recycled.

Contractor shall provide pedestrian safety devices (or other effective mitigations including closure of areas, with COR approval) shall be temporarily affixed to locations where railing removals occur, and the duration of any void of material in this manner. The temporary measure will be of no impact to the historic fabric of the structure and be “reversable”.

Concrete boring must be performed at the location of each post installation. The location of each post installation must be the same as existing.

Install railing and anchorage assembly necessary to construct the type of connection to structure specified. Install railing to present a smooth and uniform appearance in its final position. Set vertical.

A total of four coatings must be applied - one (1) coat pre-primer, one (1) coat primer, and three

(3) coats paint. four coats of painting may be completed offsite, as able. The final coat be applied after the railing has been installed.

6.1B REPAIR, REMOVE RUST AND APPLY COATINGS (see map)

All railing as indicated on map must be given the following treatment.

Locations where deterioration, thinning, corrosion and/or holes are present the material must be reset, repaired, replaced and/or welded to restore railing to optimal condition for intended purpose and functionality. Paint must be thoroughly removed to comprehensively treat the areas. Railings must be cold galvanized and primed (or as directed by industry standards) before painting. (Contractor to photo document of completing these processes).

All welds must be ground smooth for this purpose, for safe use by park visitors.

Contractor shall provide pedestrian safety devices (or other effective mitigations including closure of areas, with COR approval) shall be temporarily affixed to locations where railing removals occur. The temporary measure will be of no impact to the historic fabric of the structure and be “reversable”.

A total of five coatings must be applied to railing treated for rust removal - one (1) coat pre-primer, one (1) coat primer, and three (3) coats paint. A total of three top coats must be applied to railing in only in need of coatings.

See further project details below.

6.2 RUST REMOVAL AND COATINGS APPLICATION (see map).As designated on map, railings exhibit oxidized iron (rust) conditions.

A. Apply the following cleaning, treatment and painting to exterior work which will be fully exposed or only partially exposed, and to exposed interior work in areas designated as high humidity areas.

B. Clean by "Solvent Cleaning" method specified in SSPC-SP 1, followed by "Power Tool

Cleaning" to remove loose mill scale and rust by methods specified in SSPC-SP 3, followed by

"Pickling" to remove remaining mill scale and rust by methods specified in SSPC-SP 8.

C. Apply prime coat of ferrous metal primer immediately after pretreatment to uniform dry film thickness.

6.2A Surface Treatment and Protective

1. Cleaning: Thoroughly clean all mill scale, rust, dirt, grease and other foreign matter from ferrous metal prior to any galvanizing, hot phosphate treatment or painting. Conditions which are too severe to be removed by hand cleaning methods shall be cleaned per SSPC "Surface

Preparation Specifications,"Solvent Cleaning, SSPC-SP-1"; "Power Tool Cleaning, SSPC-SP-

3"; or "Brush-Off Blast Cleaning, SSPC-SP 7"; as required.

2. Exterior Ferrous Metal: Welds, burrs, and rough surfaces ground smooth and completed assembly cleaned, hot phosphate treated. Hot phosphate treatment not required on items which are not exposed in the finish work or on those items where size prohibits such treatment. Indicate on shop drawings where treatment is proposed to be omitted.

6.2B Painting

1. Prime Coat: After material has been properly cleaned and treated, apply two shop prime coats, each of a different color, to all surfaces except those encased in concrete or masonry.

Apply all paint per manufacturer's directions. Spot paint all abrasions and field connections after assembly. Shop coats shall be dry prior to shipment to job site.

2. Finish Coats: Apply two coats per manufacturer's instructions. May be shop-applied where applicable.

6.3 REFERENCES AND STANDARDS

A. "Code for Arc and Gas Welding in Building Construction" of American Welding Society, AWSD1.1, latest edition, with current supplements and addenda, is hereby made a part of this

Section and miscellaneous metalwork shall conform to the applicable requirements therein, except as otherwise specified herein or shown on the drawings. Nothing contained herein shall be construed as permitting work that is contrary to code requirements or governing rules and regulations.

B. All work shall conform to the American Institute of Steel Construction Specifications for design, erection and fabrication, and acceptable standards of good practice. Finished members shall be true to line and free from twists and bends.

C. SSPC "Steel Structures Painting Manual, Volume 2, Systems and Specifications".

D. National Association of Architectural Metal Manufacturers

(NAAMM): Metal Finishes Manual

6.3 SUBMITTALS

A. Product Data: Furnish manufacturer’s literature including paint, grout and recommendations for cleaning.

B. Shop Drawings: Shall show dimensions, sizes, thicknesses, gauges, finishes, joining attachments and relationship of work to adjoining construction. Where items must fit and coordinate with finished surfaces and/or constructed spaces, take measurements at site and not from drawings. Where concrete, masonry or other materials must be set to exact locations to receive work, furnish assistance and directions necessary to permit other trades to properly locate their work. Where welded connectors, concrete or masonry inserts are required to receive work, shop drawings shall show exact locations required, and all such drawings shall be furnished to the trades responsible for installing the connectors or inserts. Catalogue work sheets showing illustrated cuts of item to be furnished, scale details and dimensions may be submitted for standard manufactured items.

1. Provide templates for anchorage installations by others.

C. Certificates: Submit certification signed by California registered civil or structural engineer indicating compliance with Contract Documents and code requirements where required.

6.4 SYSTEM DESCRIPTION

A. Design Requirements: Metal sizes and shapes to match existing Railing and post; unless otherwise specifically indicated on drawings. Design components and fabrications of gauges and thicknesses to withstand anticipated loads as required by California Building Code.

6.5 QUALITY ASSURANCE

A. Fabricator Qualifications: Firm with minimum five years successful experience fabricating metal items similar to those required for Project.

6.6 BASIC MATERIALS AND ACCESSORIES

A. Steel Tubing: ASTM A500 (cold-formed), Minimum Grade B, seamless where exposed.

B. Steel Pipe: ASTM A53, Type S, seamless, Grade B, minimum standard weight, STD or Schedule 40, unless otherwise noted.

C. Welding Materials: AWS D1.1, type required for materials being welded.

D. Welding Electrodes: As permitted by AWS A5.

E. Galvanizing:

1. Galvanize fabricated items as shown and specified after fabrication in accordance with ASTM A123-09.

2. Parts shall be made in suitable sections. First clean in a hot pickling bath to remove scale and then rinse clean with clear water. After pickling and washing, dip parts in liquid zinc tank sufficient length of time to heat parts to zinc temperature, then remove and allow to drip and cool; straighten as required.

F. Non-Metallic Shrinkage Resistant Grout: Premixed, nonmetallic, non-corrosive, non-staining, shrinkage resistant product containing selected silica sands, Portland cement, shrinkage compensating agents, plasticizing and water-reducing agents, complying with CE-CRD-C621 and ASTM C1107, free of gas-producing or gas-releasing agents, oxidizing catalysts, inorganic accelerators and chlorides. Provide one of the following:

1. "Five Star Grout" (U.S. Grout Corp.).

2. "Masterflow 713" (Master Builders Co.).

3. "Crystex" (L&M Construction Chemicals, Inc.).

G. Component Connections: Fabricate component connections to support specified design loads.

H. Material Selection: Select materials for straightness, free of defects and irregularities.

1. Exposed-to-view surfaces exhibiting pitting, seam marks, roller marks, “oil canning”, stains, discolorations, and imperfections on finished units are not acceptable.

I. Joints: All joints must be welded.

1. Fabricate continuous items with joints neatly fitted and secured.

2. Ease exposed edges to approximate 1/32” uniform radius.

3. Fabricate joints exposed to weather in manner to exclude water or provide weep holes where water could accumulate.

J. Welding: Comply with AWS for recommended practices in welding each type of material;

provide welds behind finished surfaces without distortion or discoloration on exposed side;

dress exposed and contact surfaces.

K. Assemblage: fit and shop assemble in largest practical sections for site delivery.

6.7 SHOP PAINTING

A. General:

1. Shop paint miscellaneous metal work, except members or portions of members to be embedded in concrete or masonry, surfaces and edges to be field welded unless otherwise specified.

2. Remove oil, grease and similar contaminants in accordance with SSPC SP-1 "Solvent Cleaning", prior to any additional surface preparation specified.

3. Clean and prepare metal surfaces before applying shop coat. Remove rust and mill scale in accordance with SSPC SP-3 "Power Tool Cleaning".

4. Immediately after surface preparation, apply primer in accordance with manufacturer's instructions. Use painting methods which will result in full coverage and dry film thickness specified.

5. Apply one shop coat of primer to fabricated metal items, except apply 2 coats of primer to surfaces inaccessible after assembly or erection. Change color of second or finish coat to distinguish it from the first coat.

6. Separate dissimilar metals with one coat of dielectric separator, as necessary. Do not extend coating onto exposed or finished surfaces.

7. Application: Do not paint when ambient temperature is below 40 degrees Fahrenheit. Paint in dry weather or under cover; paint over dry rust-free surfaces. Stir paint and keep at uniform consistency during application. Apply paint by brush or spray per manufacturer's directions to a dry film thickness of not less than 1.5 mils (approximately 370-375 SF of surface per gallon); do not thin paint in excess of manufacturer's recommendations. Allow paint to dry before handling or shipment.

B. Exposed Exterior Items:

1. Apply the following cleaning, treatment and painting to exterior work which will be fully exposed or only partially exposed, and to exposed interior work in areas designated as high humidity areas.

2. Clean by "Solvent Cleaning" method specified in SSPC-SP 1, followed by "Power Tool Cleaning" to remove loose mill scale and rust by methods specified in SSPC-SP 3, followed by "Pickling" to remove remaining mill scale and rust by methods specified in SSPC-SP 8.

Power tool cleaning and pickling may be omitted from work fabricated from coldrolled or cold-finished stock, and from castings, provided surfaces are not heavily rusted.

3. Apply pretreatment as recommended by ferrous metal primer manufacturer.

4. Apply prime coat of ferrous metal primer immediately after pretreatment to uniform dry film thickness.

EXECUTION

6.8 CONDITION OF SURFACES: Inspect all surfaces to receive site metal work and report all defects which would interfere with this installation. Starting work implies acceptance of surfaces as satisfactory.

6.9 FIELD MEASUREMENTS: Take field measurements prior to preparation of shop drawings and fabrication, where possible; do not delay job progress; allow for trimming and fitting where necessary.

6.10 WORKMANSHIP

A. Verify all measurements at job. Coordinate all metalwork with adjoining work for details of attachments, fittings, etc. Do all cutting, shearing, drilling, punching, threading, tapping, etc., required for site metalwork or for attachment of adjacent work. Drill or punch holes; do not use cutting torch. Shearing and punching shall leave true lines and surfaces. Obtain Contracting Officer’s (CO) or Contracting Officer Representative’s (COR) review prior to site cutting or making adjustments which are not part of scheduled work. Perform necessary cutting and altering for installation and coordination with other work.

B. Conceal all fastenings where feasible. Thickness of metal and details of assembly and supports shall give ample strength and stiffness. Form joints exposed to weather to exclude water.

C. Make all permanent connections in ferrous metal surfaces using welds where at all possible;

do not use bolts or screws.

D. Set all work plumb, true, rigid, neatly trimmed out, accurately fitted and free from distortions or defects detrimental to appearance or performance.

F. Where items must be incorporated or built into adjacent work, deliver to trade responsible for such work in sufficient time that progress of work is not delayed. Be responsible for proper location of such items.

G. Make provisions for erection stresses by temporary bracing; Keep work in alignment.

H. Install ornamental metal items in accordance with manufacturer’s recommendations, installation instructions, and approved shop drawings.

I. Install items plumb, true and in correct relation to adjacent work, free from distortion or defects detrimental to appearance and performance.

J. Prior to securing continuous items, adjust to ensure proper matching at butt joints and correct alignment throughout their length.

K. Tolerances: Accurately align and locate components to required lines and levels to conform to following tolerances:

1. Plumb: 1/8” in 10’-0”; ¼” in 40’-0”; non-cumulative.

2. Level: 1/8” in 20’-0”; ¼” in 40’-0”; non-cumulative.

3. Location: 3/8” maximum deviation from measured theoretical location (any member and location).

6.11 WELDING:

A. Perform all welding in accordance with AWS Code D1.1. Welds shall be made only by operators experienced in performing the type of work indicated. Welds normally exposed to view in the finished work shall be uniformly made and shall be ground smooth. Where welding is done in proximity to glass or finished surfaces, such surfaces shall be protected from damage due to weld sparks, spatter, or tramp metal.

B. Field Welding: Comply with AWS Welding Code for procedures related to field welding as related to appearance and quality of welds made and for methods used in correcting welding work. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. Obtain fusion without undercut or overlap. Remove welding flux immediately. At exposed connections, finish exposed welds and surfaces smooth and blended so that no roughness shows after finishing and contour of welded surface matches those adjacent.

6.12 SURFACE TREATMENT AND PROTECTIVE COATINGS

A. Cleaning: Thoroughly clean all mill scale, rust, dirt, grease and other foreign matter from ferrous metal prior to any galvanizing, hot phosphate treatment or painting. Conditions which are too severe to be removed by hand cleaning methods shall be cleaned per SSPC "Surface Preparation Specifications,"Solvent Cleaning, SSPC-SP-1"; "Power Tool Cleaning, SSPC-SP-3"; or "Brush-Off Blast Cleaning, SSPC-SP 7"; as required.

B. Exterior Ferrous Metal: Welds, burrs, and rough surfaces ground smooth and completed assembly cleaned, hot phosphate treated. Hot phosphate treatment not required on items which are not exposed in the finish work or on those items where size prohibits such treatment.

Indicate on shop drawings where treatment is proposed to be omitted.

6.13 PAINTING

A. Prime Coat: After material has been properly cleaned and treated, apply two shop prime coats, each of a different color, to all surfaces except those encased in concrete or masonry.

Apply all paint per manufacturer's directions. Spot paint all abrasions and field connections after assembly. Shop coats shall be dry prior to shipment to job site.

B. Finish Coats: Apply one coat per manufacturer's instructions. May be shop-applied where applicable.

Prime Coat Reference (Existing Coating):

6.14 GALVANIZING

A. Galvanize fabricated items after fabrication in accordance with ASTM A123-66.

B. Parts shall be made in suitable sections. First clean in a hot pickling bath to remove all scale and then rinse clean with clear water. After pickling and washing, dip parts in liquid zinc tank sufficient length of time to heat parts to zinc temperature, then remove and allow to drip and cool; straighten as required.

6.15 INSTALLATION

A. Coordinate and furnish anchorages, setting drawings, diagrams, templates, instructions and directions for installation of anchorages, including concrete inserts, sleeves, anchor bolts and other miscellaneous items having integral anchors that are to be embedded in concrete or masonry construction. Coordinate delivery of such items to the project site. Deliver items which are to be built into the work of other Sections in time so as not to delay the progress of the Work.

B. Protect finished surfaces against damage during construction and remove protection at time of substantial completion.

C. Immediately after erection, clean field welds, bolted connections, marred and abraded surfaces. Paint and touch-up paint with the specified paint system. Touch up galvanized surfaces in accordance with ASTM A780.

G. Replace items damaged in course of construction.

6.16 PROTECTION AND CLEANING

A. Remove all soil and foreign matter from finished surface and apply such protective measures as may be required to prevent damage or discoloration of any kind until acceptance of project.

7.0 Submittals

A. Manufacturer’s Data: Submit to COR, Technical Data Sheets for all products to be used. These must be provided during the solicitation period concurrently with the contractor’s proposal.

B. Submit all information using guidelines specified in Section 3.0

7.1 Quality Assurance

C. Qualifications of staff: Use only qualified journeyman staff.

D. Qualifications of Welder(s), Metal Workers, and Painter(s): Use only qualified journeyman for this work in noted specialties.

7.3 Project Conditions

E. The work location in this contract is subject to extreme fog and wind conditions for much of the year. The contractor shall schedule the work only when conditions at the individual project sites satisfy the requirements of this section.

F. Do not apply paint on damp or wet surfaces, or on surfaces in direct sunlight.

G. Do not allow fire hazards to occur on the project sites; remove from the area daily all oily rags, waste, and other combustibles not in covered metal containers and maintain and monitor heaters safely.

H. Vehicles no larger than a standard full size pick-up truck will be allowed on internal park paths. Larger trucks (no heavier than a 18,000 GVWR trucks) are allowed on Promenade and City Streets within Aquatic Park boundaries.

I. Heavy equipment (including skid-steers and forklifts) are not allowed on Bleacher structures.

8.0 Inspection/Acceptance:

8.1 Cleaning:

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and pick up all construction debris from the site. At time of final inspection, project shall be thoroughly clean and ready for use.

8.2 Substantial Completion and Final Inspection

B. When project, or designated portion of project, is substantially complete, request in writing a final inspection. Upon receipt of written request that project is substantially complete, the Contracting Officer’s Representative will proceed with inspection within 10 days of receipt of request or will advise the Contractor of items that prevent the project from being designated as substantially complete.

C. If, following final inspection, the work is determined to be substantially complete, Contracting Officer’s Representative will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion.

Contractor shall complete the work described on the list of deficiencies within 30 calendar days, as weather permits

9.0 Contracting Officers Authority

The contracting officer is the only person with the authority to act as agent of the

Government under this contract. Only the contracting officer has authority to:

A. Direct or negotiate any changes in the Statement of Work or specifications

B. Modify or extend the period of performance

C. Change the delivery schedule

D. Change any terms and conditions of this contract

10.0 Images/Drawings

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