HomeMy WebLinkAboutAddendum A - Coulon North Water WalkGENE COULON MEMORIAL PARK NORTH WATER WALK IMPROVEMENTS BID PHASE
ADDENDUM A 09 August 2022
Addendum A - Page 1 of 1
ADDENDUM – A
TO THE CONTRACT DOCUMENTS FOR
City of Renton
GENE COULON MEMORIAL PARK NORTH WATER WALK IMPROVEMENTS
Project Issued: July 25, 2022
Addendum A Issued: August 9, 2022
Bid Opening Date: August 18 , 2022
To: All Holders of Bid/Contract Documents:
This addendum forms part of the Contract Documents and modifies the original Plans and
Specifications, for which proposals are due on the date and time above.
Acknowledge receipt of this addendum on “Addenda Received” of the Bid Documents in the
Contract Documents. Failure to do so might subject the bidder to disqualification.
This addendum shall clarify the Contract Documents as follows:
Item No. 1 – Pre -Bid Conference Notes
Item No. 2 - Bidder Questions & Responses Memorandum #1
Item No. 3 – Specification 06 61 00 FRP Grating
Specification 06 61 00 2.03 D shall be amended to read:
Resin system: The resin system used in the manufacture of the grating shall be ISOFR or
VEFR. Manufacturer may be required to submit corrosion data from tests performed on actual
grating products in standard chemical environments. Corrosion resistance data of the base resin
from the manufacturer is not a true indicator of grating corrosion resistance and shall not be
accepted.
Item No. 4 – Specification 05 70 00 Aluminum Float System
Specification 05 70 00 1.04.C.4.b shall be amended to read:
Live Load: The live load shall be a uniform 60 psf on all surfaces of the floats. Calculation of
freeboard shall be permitted to use a 25 psf live load.
8/9/2022
DATE: August 2, 2022
TO: Potential Bidders
FROM: Betsy Severtsen, RLA, ASLA/Capital Projects Coordinator
SUBJECT: Gene Coulon Memorial Park North Water Walk Improvements,
CAG-22-014, Pre-Bid Conference Notes
1. Link to Audio and Video Recordings of Pre-Bid Conference
a. https://fileshare.rentonwa.gov:8443/?ShareToken=6B24F348968672BA3939260
C6BFE1F0CD0BBB96B
2. Attendees
a. City of Renton – Betsy Severtsen, Capital Projects Coordinator
b. City of Renton – Alan J. Wyatt, Capital Projects Manager
c. PND Engineers – Colin Kuester, Senior Engineer
d. Eric Muller – Pacific Piles and Marine
e. Eric Ramirez – American Construction
f. Ed Hagedorn – Stellar J Corp.
g. Jack Ecklund and Hans Breivik – Quigg Brothers
3. Project Site Overview
a. Gene Coulon Memorial Beach Park – Renton’s regional park, located on Lake
Washington.
b. The North Water Walk is about 40 years old. First phase of structural work
occurred on the Ivar’s Deck structure adjacent to the North Water Walk.
c. Intent for project: renovate +40-year-old structure and bring into compliance
with Washington DNR Lease Requirements (light-penetrating decking, removal
of treated wood).
4. Schedule
a. Release of Bid Documents: July 25, 2022
b. Pre-Bid Conference: August 2, 2022, 8:30 AM
c. Questions Due: August 11, 2022, 5:00 PM
i. Submit questions via email to bsevertsen@rentonwa.gov
d. Bids Due: August 18, 2022, prior to 2:00 PM
i. City of Renton, City Clerk. Lobby, City Hall, 1055 S. Grady Way, Renton
e. Bid Opening: August 18, 2022, at 3:00 PM
i. Refer to ZOOM link in ADVERTISEMENT FOR BIDS
f. Notice to Proceed (Anticipated): October 3, 2022
g. Mobilization on-site: October 10, 2022
Parks and Recreation Department
Parks Planning & Natural Resources Division
h. In-Water Work Windows: November 16-December 31 and July 16-July 31
i. Substantial Completion Date: September 1, 2023
j. Final Acceptance: 30 days from Substantial Completion Date
5. General Project Requirements
a. Bid Submittal Checklist – 00 42 10, provides details on requirements/timing for
form submittals
b. Bid Proposal Form – City of Renton Bid Form
i. Acknowledge Receipt of Addenda
ii. Complete Bid Form in entirety and all Supplemental Forms.
iii. Subcontractor Listing
iv. Alternate
c. Proposal Bid Bond
d. Bidder’s Qualification Statement
e. Performance Bond Required
f. City of Renton Business License
g. Statement of Intent to Pay Prevailing Wages
h. Certificate of Liability Insurance
i. Certificate of Compliance with Wage Payment Statues
j. Agreement – City of Renton Standard Agreement
k. General Conditions – City of Renton Standard General Conditions
l. Product Substitution Request 01 40 10 – Substitution requests allowed up to 10
days prior to bid opening. Approved substitutions will be listed on an addenda
6. Project Description and Scope of Work – PND Engineers
a. General
b. Demolition
c. Structural
d. Utilities
e. Electrical
f. Landscape/Irrigation
7. Special Conditions/Construction Access
a. Work Hours
i. Monday – Friday 7:00 am to 8:00 pm
ii. Saturday 9:00 am to 8:00 pm, only with approval of Owner
iii. Sunday – no work
iv. City recognized Holidays – no work
b. Site Access: barge and small-boat/float access
c. Contractor Staging Area
d. Special Material Testing/Inspections
i. Special Material Testing & Inspection Firm provided by Owner.
ii. Contractor shall coordinate and schedule all special testing and
inspections
8/9/2022
8. Questions and Answers:
a. Question: Is it correct that the only items considered in-water work are the pile
jackets and pile cap repairs?
i. Answer: Yes, the pile and pile cap work are those that apply to the in-
water work windows specified in the permits (November 16-December
31 and July 16-July 31). However all of the other permit conditions apply
to the rest of the work, including no material may fall in the lake.
b. Question: In regard to the Ordinary High Water versus the Ordinary Low Water
levels, what are the dates where this changes?
i. Answer: The Cover Sheet of the drawings includes the lake levels, note
the datums (Army Corps has their own). If you visit the Army Corp Lake
Washington water levels website, it provides a summary of the
approximate lake levels under the Lake Washington Summary
Hydrograph page, see https://www.nwd-
wc.usace.army.mil/nws/hh/www/
c. Question: Out of the materials that you mentioned that could be substitutions:
Denso and the composite, correct?
i. Answer: Correct.
d. Question: Does the composite only apply to tables and benches or is this the
same material as walers?
i. Answer: The walers are a recycled plastic lumber (RPL) material, not
composite. These materials are in the specification. Please see the earlier
phase work (Ivar’s Deck) for examples of the RPL. The composite material
is a separate material.
e. Submit all other questions via email to bsevertsen@rentonwa.gov by August 11,
2022, 5:00 PM
End of Meeting
The above information is reflecting the Pre-Bid Conference meeting agenda items, notes, questions, and attendees
as provided in the information provided in the Pre-Bid Conference ZOOM meeting of August 2, 2022. Please notify
Betsy Severtsen, City of Renton, of any discrepancies within 24 hours of receipt.
Gene Coulon Memorial Park North Water Walk Improvements: CAG-22-014
Bidder Questions and Response
PARKS and RECREATION
DEPARTMENT
M E M O R A N D U M #1
DATE: August 9, 2022
TO: Bidders
CC: Colin Kuester, PND Engineers
FROM: Betsy Severtsen, Capital Projects Coordinator
SUBJECT: Gene Coulon Memorial Park North Water Walk Improvements –
Bidder Questions & Responses (CAG-22-014)
1. Bidder’s Question:
• What was Phase 1 of the project?
Response:
• The structure with Ivar’s restaurant that is adjacent to the North Water Walk
was an earlier phase of this project.
2. Bidder’s Question:
• Please reference specification section 09 96 26 and sheet E0.01. Note 2 under
the Luminaire Schedule requires the existing Light Poles to be painted using one
of the coating processes required in specification 09 96 26. Please clarify which
coating process shall be used to paint the Light Poles and Fixtures.
Response:
• Section 09 96 26 2.06 G specifies that light poles and fixtures shall be painted.
Section 09 96 26 2.02 A defines painted.
3. Bidder’s Question:
• Please reference sheet E2.00. Please provide the size of the conduit and
conductors starting at the Pilot House and continuing under the west dock,
ending at the S12 light pole near the West Picnic area.
Response:
• Conduit shall be 1.5” unless otherwise noted.
4. Bidder’s Question:
• Could you please clarify what the In-Water Work Window means? 1) Is this just
relating the diving needed for the pile wrap. Or 2) Does it include work on the
water?
Bidders Questions – Gene Coulon Memorial Park North Water Walk Improvements: CAG-22-014
Page 2 of 3
August 9, 2022
Gene Coulon Memorial Park North Water Walk Improvements: CAG-22-014
Bidder Questions and Response
Response:
• In-Water Work Window” refers to the permit requirements to perform work
below the Ordinary High Water Level (OHW/OHWL) during certain dates on the
calendar. OHW is referenced on the cover sheet of the drawings and Provision 2
of the WDFW Hydraulic Project Approval defines the dates. It includes work on
the piles and pile caps as OHW is at an elevation part way up the pile caps. Note,
however, that the repair work to caps is projected to be in the dry because the
Corps-controlled lake level is typically low in November and December. HPA
Provision 2 does not apply to the deck replacement work as it is above OHW,
nor does it apply to vessels, barges, and floats used to perform work above the
OHW.
5. Bidder’s Question:
• Is it possible to list who attended the Pre-Bid Zoom meeting?
Response:
• Pre-bid meeting minutes, including attendance, will be distributed to all
planholders via Addendum A.
6. Bidder’s Question:
• Text RFI #1 - Drawing sheet S3.02 shows a dead load freeboard for the floating
docks of 15". The specifications section 05 70 00 Aluminum Float System,
section 1.04, C, 4, b requires a 60psf live load for the aluminum floating docks.
To have a 60psf live load the dead load will have to be much higher. Please
revise the live load requirement to industry standard 20psf - 25 psf live load.
Can you do that?
Response:
• Specification will be revised to require 60 psf for structural capacity of framing
and 25 psf for freeboard calculation.
7. Bidder’s Question:
• RFI #2 - Specification section 05 70 00 Aluminum Float System, section 2.03
Grating A., requires Fibergrate SI60 1-1/2" pultruded fiberglass grating. That is
very expensive deck. It is more common today to specify Fibergrate Ecograte 62
ADA compliant (see attached sheet), molded grating that is 1" deep. Will you
consider that deck to be an approved equal as long as it is gray color to match
the Ivars deck?
Response:
Bidders Questions – Gene Coulon Memorial Park North Water Walk Improvements: CAG-22-014
Page 3 of 3
August 9, 2022
Gene Coulon Memorial Park North Water Walk Improvements: CAG-22-014
Bidder Questions and Response
• Ecograte 62 will not be considered as an alternate. Owner requires clips not
visible on the surface and Ecograte 62 does not have I-shaped bars that can be
clamped from within.
8. Bidder’s Question:
• Would Retro Wrap HD2 be an acceptable substitution for the specified Denso
Seashield Series 2000HD pile wrap material.
Response:
• The substitution request was rejected. Retro Wrap does not include a
paste/primer or tape wrap that will fill and conform to lightly pitted surface of
piles. Substitutions shall maintain these system components.
End of Bidder's Questions & Responses
Gene Coulon Memorial Beach Park – North Water Walk Improvements 06 61 00
City of Renton FRP GRATING
Project No. CAG-22-014 Page 1 of 3
May 25, 2022 06 61 00 - 1
SECTION 06 61 00 – FRP GRATING
PART 1 GENERAL
1.01 SUMMARY
A.Scope of Work: The Contractor shall furnish, fabricate (where necessary), and install all fiberglass reinforced plastic (FRP) items, with
all appurtenances, accessories and incidentals necessary to produce a complete, operable and serviceable installation as shown on
the Contract Drawings and as specified herein, and in accordance with the requirements of the Contract Documents.
B.Related Requirements:
1.Section 05 12 00 – Structural Steel Framing
2.Section 05 50 00 – Metal Fabrications
1.02 DEFINITIONS
A.The publications listed below (latest revision applicable) form a part of this specification to the extent referenced herein. The
publications are referred to within the text by the designation only.
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) Test Methods:
ASTM D635 Rate of Burning and/or Extent and Time of Burning of Self Supporting Plastics in a Horizontal Position
ASTM D732 Shear Strength of Plastics by Punch Tool
ASTM E84 Surface Burning Characteristics of Building Materials
1.03 SUBMITTALS
A.The Contractor shall furnish shop drawings of all fabricated gratings and accessories in accordance with the provisions of this Section.
B.The Contractor shall furnish manufacturer's shop drawings clearly showing material sizes, types, styles, part or catalog numbers,
complete details for the fabrication of and erection of components including, but not limited to, location, lengths, type and sizes of
fasteners, clip angles, member sizes, and connection details.
C.The Contractor shall submit the manufacturer’s published literature including structural design data, structural properties data, grating
load/deflection tables, corrosion resistance tables, certificates of compliance, test reports as applicable, concrete anchor systems and
their allowable load tables, and design calculations for systems not sized or designed in the contract documents.
D.The Contractor shall submit sample pieces of each item specified herein, including hold-down hardware, for acceptance by the
Owner/Engineer as to quality and color. Sample pieces shall be manufactured by the method to be used in the Work.
1.04 QUALITY ASSURANCE
A.All items to be provided under this Section shall be furnished only by manufacturers having a minimum of ten (10) years’ experience in
the design and manufacture of similar products and systems. Additionally, if requested, a record of at least five (5) previous, separate,
similar successful installations in the last five (5) years shall be provided.
B.Manufacturer shall offer a 5 year limited warranty on all FRP products against defects in materials and workmanship.
C.Manufacturer shall be certified to the ISO 9001 standard, most current.
D.Manufacturer shall provide proof of certification from at least two other quality assurance programs for its facilities or products (DNV,
ABS, USCG, AARR).
1.05 PRODUCT DELIVERY AND STORAGE
A.Delivery of Materials: Manufactured materials shall be delivered in original, unbroken pallets, packages, containers, or bundles bearing
the label of the manufacturer. Adhesives, resins and their catalysts and hardeners shall be crated or boxed separately and noted as
such to facilitate their movement to a dry indoor storage facility.
B.Storage of Products: All materials shall be carefully handled to prevent them from abrasion, cracking, chipping, twisting, other
deformations, and other types of damage. Store items in an enclosed area and free from contact with soil and water. Store adhesives,
resins and their catalysts and hardeners in dry indoor storage facilities between 70 and 85 degrees Fahrenheit (21 to 29 degrees
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 06 61 00
City of Renton FRP GRATING
Project No. CAG-22-014 Page 2 of 3
May 25, 2022 06 61 00 - 2
Celsius) until they are required.
PART 2 PRODUCTS
2.01 MANUFACTURER
A.Pultruded grating shall be Fibregrate SI60 1 1/2" inch pultruded fiberglass grating to match adjacent Ivar’s deck, or Engineer-approved
equivalent.
2.02 GENERAL
A.All FRP items furnished under this Section shall be composed of fiberglass reinforcement and resin in qualities, quantities, properties,
arrangements and dimensions as necessary to meet the design requirements and dimensions as specified in the Contract Documents.
B.Fiberglass reinforcement shall be a combination of continuous roving, continuous strand mat, and surfacing veil in sufficient quantities
as needed by the application and/or physical properties required.
C.Resins shall be vinyl ester with chemical formulations as necessary to provide the corrosion resistance, strength and other physical
properties as required.
D.All finished surfaces of FRP items and fabrications shall be smooth, resin rich, free of voids and without dry spots, cracks, crazes or
unreinforced areas. All glass fibers shall be well covered with resin to protect against their exposure due to wear or weathering.
E.All grating shall be further protected from ultraviolet (UV) light with 1) integral UV inhibitors in the resin and 2) a synthetic surfacing veil
to help produce a resin rich surface.
F.All FRP products shall have a tested flame spread rating of 25 or less per ASTM E 84 Tunnel Test. Gratings shall not burn past the 25
mm reference mark and will be classified HB per ASTM D635.
G.All grating clips shall be manufactured of Type 316SS (stainless steel).
2.03 GRATING
A.Manufacture: Grating components shall be high strength and high stiffness pultruded elements having a maximum of 70% and a
minimum of 60% glass content (by weight) of continuous roving and continuous strand mat fiberglass reinforcements. The finished
surface of the product shall be provided with a surfacing veil to provide a resin rich surface which improves corrosion resistance and
resistance to ultraviolet degradation. Bearing bars shall be interlocked and epoxied in place with a two piece cross rod system to
provide a mechanical and chemical lock. Cross rods should be below the walking surface of the grating.
B.Non slip surfacing: Grating shall be provided with a quartz grit (aluminum oxide) bonded and baked to the top surface of the finished
grating product.
C.Fire rating: Grating shall be fire retardant with a tested flame spread rating of 25 or less when tested in accordance with ASTM E 84.
Manufacturer may be required to provide certification of ASTM E84 test on grating panels from an independent testing laboratory. Test
data shall be from full scale testing of actual production grating, of the same type and material supplied on the project. Test data
performed only on the base resin shall not be acceptable.
D.Resin system: The resin system used in the manufacture of the grating shall be ISOFR or VEFR. Manufacturer may be required to
submit corrosion data from tests performed on actual grating products in standard chemical environments. Corrosion resistance data
of the base resin from the manufacturer is not a true indicator of grating corrosion resistance and shall not be accepted.
E.Color: Gray to match Ivar’s Deck grating, submit sample to Owner/Engineer for verification.
F.Depth: 1-1/2" deep load bars with a tolerance of plus or minus 1/32".
G.Mesh Configuration: Spacing shall be such as to create at a minimum 60% open area meeting the opening requirements of ADA.
H.Load/Deflection: Grating shall meet manufacturers published safe recommended loadings with deflection not to exceed the following:
1. Uniform distributed load over a 48" span: 100 pounds per square foot, with a maximum deflection of 0.20".
2.04 GRATING FABRICATION
A.Measurements: Grating supplied shall meet the minimum dimensional requirements as shown or specified. The Contractor shall
provide and/or verify measurements in field for work fabricated to fit field conditions as required by grating manufacturer to complete
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 06 61 00
City of Renton FRP GRATING
Project No. CAG-22-014 Page 3 of 3
May 25, 2022 06 61 00 - 3
the work. Determine correct size and locations of required holes or cutouts from field dimensions before grating fabrication.
B.Layout: Each grating section shall be readily removable, except where indicated on drawings. Manufacturer to provide openings and
holes where located on the contract drawings. Grating support shall be provided at openings in the grating by contractor.
C.Sealing: All shop fabricated grating cuts shall be coated with vinyl ester resin to provide maximum corrosion resistance. All field
fabricated grating cuts shall be coated similarly by the contractor in accordance with the manufacturer's instructions.
D.Hardware: Type 316 stainless steel hold down clips shall be provided and spaced at a maximum of four feet apart at a minimum of
four locations per piece of grating, or as recommended by the manufacturer. Provide two clips per hold down location as shown in the
project drawings.
PART 3 EXECUTION
3.01 INSPECTION
A.Shop inspection shall be at the discretion of the Owner and shall be at Owner's expense. The fabricator shall give ample notice to
Contractor prior to the beginning of any fabrication work so that inspection may be provided. The grating shall be as free, as
commercially possible, from visual defects such as foreign inclusions, delamination, blisters, resin burns, air bubbles and pits.
3.02 INSTALLATION
A.Contractor shall install gratings in accordance with manufacturer’s assembly drawings. Lock grating panels securely in place with hold
down fasteners as specified herein. Field cut and drill fiberglass reinforced plastic products with carbide or diamond tipped bits and
blades. Seal cut or drilled surfaces in accordance with manufacturer's instructions. Follow manufacturer's instructions when cutting or
drilling fiberglass products or using resin products; provide adequate ventilation.
B.All grating edges either cut or drilled shall be supported for minimum bearing length as shown on the drawings.
C.Clips shall be installed as noted on the Drawings, including the use of two clips at each connection point to pinch and secure a single
bar.
END OF SECTION
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 05 70 00
City of Renton ALUMINUM FLOAT SYSTEM
Project No. CAG-22-014 Page 1 of 4
May 25, 2022 05 70 00 - 1
SECTION 05 70 00 – ALUMINUM FLOAT SYSTEM
PART 1 - GENERAL
1.01 SUMMARY
A.The Aluminum Float System is a product to be designed, fabricated, and installed by the Contractor.
B.Aluminum Float System shall include all materials, delivery, submittals, equipment, and labor necessary for fabricating, constructing,
and installing, and finishing the Float System as shown on the Plans.
C.The Plans depict the minimum requirements for the float dimensions, bullrails, grating, layout, furnishings, etc. Float designer shall
select a framing system, floatation arrangement, etc. that meet the requirements below and in the Drawings.
1.02 RELATED WORK SPECIFIED ELSEWHERE
A.Section 05 50 00 – Metal Fabrications
1.03 REFERENCES
A.ASTM (American Society for Testing and Materials) Specifications.
1.ASTM B209 – Standard Specifications for Aluminum and Aluminum-Alloy Sheet and Plate.
2.ASTM B210 – Standard Specifications for Aluminum and Aluminum-Alloy Drawn Seamless Tube.
3.ASTM B221 – Standard Specifications for Aluminum and Aluminum-Alloy Bar, Rod, Wire, Profiles and Tubes.
4.ASTM B241 – Standard Specifications for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Tube.
5.ASTM B308 – Standard Specifications for Aluminum and Aluminum-Alloy 6061-T6 Standard Structural Profiles.
B.The Aluminum Association (AA) – Aluminum Design Manual: Specifications and Guidelines for Aluminum Structures.
C.AWS D1.2 Structural Welding Code - Aluminum.
1.04 SUBMITTALS
A.Shop Drawings: Contractor shall submit a framing plan for review by the Engineer/Owner. The shop drawings shall include a layout
plan, profile and cross sections. The plan shall show the dimensions of the framing and member sizes; flotation material, locations,
and fastening; and deck grating, hinges, fit up and weld details and all other details required to furnish the float system as specified
and shown in the plans. Contractor shall verify existing float average freeboard prior to demolition.
B.Review and approval of submittals by the Owner shall not relieve the Contractor of full responsibility for accuracy of dimensions and
details. The Owner’s review and approval of a submittal shall not relieve the Contractor from responsibility for errors or omissions in
the submittal.
C.Float Calculations: Contractor shall submit design calculations, prepared by an engineer, substantiating that the float design meets the
following design criteria. Float calculations shall be stamped and signed by a qualified engineer per Section 1.5.
1.Freeboard Criteria: The design average freeboard under dead load only shall match existing float average freeboard within a
tolerance of plus 1” and minus ½”. The average freeboard shall be based on the freeboard at the four corner points of any float
unit. Structural frame members shall be a minimum of 4 inches above the water under dead load for the life of the float system.
When a 400-pound load is applied along the float centerline, 2 feet from the outer end, there shall be no more than 4 inches loss
of freeboard at the end of the dock.
2.List: The steady state condition of the float, without live load, shall not exceed a cross slope 1 inch in 12 feet.
3.Structural Criteria: The float system shall be designed to withstand minimum uniformly-distributed environmental and impact
loads acting on the above-water profile of the floats. The float system shall be designed for lifting and handling during
installation.
4. Loads:
a.Dead Load: The dead load shall consist of the float system frame, fascia boards, hinges, attachment hardware, gangways,
benches, tables, and all other equipment permanently attached to the float.
b.Live Load: The live load shall be a uniform 60 psf on all surfaces of the floats. Calculation of freeboard shall be permitted
to use a 25 psf live load.
c.Impact Load: The impact load shall be the equivalent of a 14-foot long small craft, weighing 1,000 lbs, approaching the
dock at a 10 degree angle at a velocity of 1 foot per second.
d.Environmental Loads: The design wind shall be 110 mph, 3-second gust, exposure category C, from any direction. The
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 05 70 00
City of Renton ALUMINUM FLOAT SYSTEM
Project No. CAG-22-014 Page 2 of 4
May 25, 2022 05 70 00 - 2
design wave height for the floats is 1.5 feet with a wave period of 2.2 seconds.
5.Load Cases:
a.Load cases shall include, but are not limited to:
i.Case 1: Dead Load + Uniform Live Load
ii.Case 2: Dead Load + Point Live Load
iii.Case 3: Dead Load + Wind Load
iv.Case 4: Dead Load + 0.75 Wind Load + Wave Load
v.Case 5: Dead Load + Impact
b.The above load cases shall be applied at a minimum, plus any others, as determined by the float design engineer of
record.
6.Grating shall cover 100% of the float surface area. Flotation devices footprint shall not exceed 50% of the total float surface
area.
D.Material submittals shall, at a minimum, include the following:
1.Aluminum materials
2.Grating and fasteners
3.Polytub floatation
4.Plastic lumber for fascia boards
E.Manufacturer’s Resume: Contractor to submit manufacturers resume stating qualifications per Section 1.05, below, and documenting
work experience.
F.Welding Procedures
G.Welder Certification: Certify welders employed in the work, verifying AWS qualification within the previous 12 months.
H.Detailed description of float handling, transport and delivery procedures.
1.05 QUALIFICATIONS
A.The float system shall be fabricated by a manufacturer that has a minimum of five consecutive years of experience in fabricating and
installing similar float systems, on bodies of water in Washington, Oregon or Idaho.
B.The engineer for the float system shall be a professional engineer registered in the State of Washington. The engineer shall have at
least ten years of work experience in the design of float structures.
C.Welders of the float system shall be certified in accordance with AWS D1.2 for aluminum welding, and current qualifications shall be
submitted for each welder.
PART 2 - PRODUCT
2.01 FRAMING
A.All structural members, including tubes, plates, angles and pipe, shall be marine grade aluminum alloy 6061-T6, per ASTM B221.
B.Aluminum pipe and round bar shall be 6063-T6.
C. Non-conductive isolators shall be used for separation of dissimilar metals.
2.02 FLOATATION TUBS
A.Flotation tubs (Polytubs) shall be Premier Materials Technology (Manufactured by ACE Roto-Mold) (800-262-2275) or Engineer-
approved equivalent.
B.Polytub encasement shall provide 100% protection to all surfaces of the flotation material and allow zero water to enter the unit and
shall be 100% virgin grade linear low density polyethylene, black in color, with a nominal wall thickness of 0.150 inches and a
minimum wall thickness of 0.125 inches. The encasement shall meet the ASTM 1998D-04 Falling Dart Test to assure the material
quality and molding process. The encasement shall have the following minimum characteristics:
1.Density per ASTM D-1505:0.937 g/cc
2.Tensile strength per ASTM D-638:2750 psi
3.Flexural modulus per ASTM D-790:109,000 psi
C.Polytub floatation material shall be 100% virgin grade polystyrene, expanded in-place inside the encasement, with a density of 0.8 to
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 05 70 00
City of Renton ALUMINUM FLOAT SYSTEM
Project No. CAG-22-014 Page 3 of 4
May 25, 2022 05 70 00 - 3
0.937 g/cc based on ASTM D-1505. Floatation material shall not sink or contaminate the water if the encasement is punctured.
Material shall meet the Seven Day Hunt Absorption Test of less than 3.0 lbs per cubic foot water absorption in seven days per the test
requirements.
D.Units shall be secured to the structural frame with minimum ¾” diameter through bolts. Each unit shall have a minimum of six molded
mounting slots with 1.50-inch thick mounting flanges.
E.The Polytub manufacturer shall furnish test results for each size furnished showing wall thickness, water absorption, falling dart test,
and certified buoyancy rating. The manufacturer shall provide a minimum of 15 year warranty with the first 10 years non-prorated.
2.03 GRATING
A.Grating used on floats shall be Fibregrate SI60 1 1/2" inch pultruded fiberglass grating, or approved equivalent, meeting the following
requirements.
1.Open area of grating shall be at least 60%. A sample shall be submitted for approval.
2.Spacing between load bars shall meet ADA guidelines and be no larger than ½ inch.
3.Grating shall have a coarse grit coating, and be gray to match existing grating at Ivar’s Deck. Surface shall not have indications
of delamination at end of warranty period. A sample shall be submitted for approval.
4.The Grating manufacturer shall provide a minimum of 15 year warranty with the first 10 years non-prorated.
2.04 HINGE CONNECTIONS
A.Hinge connections shall move freely, without binding, and shall be designed to resist all loads, including torsion and fatigue loads.
B.Any steel components shall be isolated from the aluminum frame.
2.05 PLASTIC FASCIA BOARDS
A.Fascia board edging shall be plastic lumber HDPE per section 06 60 00 of these specifications.
B.Mounting shall accommodate thermal expansion using slotted holes at each connection, recessed bolt heads, and double nuts, and
shall be sized efficiently to minimize damage from impact.
C.Fascia board shall be continuous around the float perimeter except at hinges and brace connections. Individual segments shall be no
more than 8 ft in length, and with ½” gaps between segments.
2.06 STAINLESS FASTENERS
A.Stainless steel fasteners shall be 316 stainless steel, unless otherwise noted.
B.Stainless washers shall be used under bolt head and nut and shall be 316 stainless steel
C.All nuts used on stainless steel bolts shall be Nylock nut and shall be compatible with 316 stainless steel.
PART 3 - EXECUTION
3.01 GENERAL
A.Aluminum Float System shall be shop fabricated in an approved facility that provides a controlled environment suitable for
manufacture of quality welded aluminum products. The shop shall provide adequate work space, equipment and protection from
detrimental environmental conditions.
B.Welders shall be certified in accordance with AWS D1.2 for aluminum welding, and current qualifications shall be submitted for each
welder.
C.The Contractor shall furnish the Owner/Engineer with 30 day notice of the beginning of the work at the shop so that special fabrication
inspections may be scheduled by the Owner.
3.02 FABRICATION
A.The complete aluminum float assembly shall be constructed as shown on the plans. Any materials damaged during transport and
delivery and/or during handling and fabrication operations shall be repaired or replaced by the fabricator, at the discretion of the
Engineer, and at no additional cost to the Owner.
B.Fabricate and assemble components in a shop, to greatest extent possible. Workmanship and finish shall be equal to the best industry
REVISED - ADDENDUM A
Gene Coulon Memorial Beach Park – North Water Walk Improvements 05 70 00
City of Renton ALUMINUM FLOAT SYSTEM
Project No. CAG-22-014 Page 4 of 4
May 25, 2022 05 70 00 - 4
standards and in accordance with the requirements of AWS, AISC, and The Aluminum Association, as applicable.
C.All aluminum welding shall be according to AWS D1.2, as applicable.
D.Aluminum Fabrication: Edges shall be cut true, smooth and free of burrs. Flame cutting is not permitted. Corner edges shall be ground
smooth. Holes shall be drilled or punched. Weld spatter and flash marks shall be removed and ground smooth. Mill stamps and
markings shall be removed from all exposed surfaces.
E.No drilling and tapping of bolt-up connections shall be permitted. Through bolting with sufficient hardware is acceptable.
3.03 TRANSPORT AND DELIVERY
A.The Contractor shall assume full responsibility for any damages or losses resulting from the handling or transport of the aluminum float
system during loading, shipping, transport and delivery to the project site as well as the subsequent handling required on site for
installation.
B.Damage that occurs during transport and delivery and/or during other handling operations prior to final acceptance shall be repaired or
replaced by the Contractor at the discretion of the Engineer and at no additional cost to the Owner.
3.04 FLOAT INSTALLATION COORDINATION
A.The Contractor shall coordinate the fabrication of the float system and the installation so that the float system operates as intended. In
the event the float system does not function as intended, the Contractor shall make the necessary alterations to ensure proper
function, at no additional cost to the Owner.
B.The Contractor shall take care in handling of floats to avoid damage during transport, storage, assembly, and installation. Storage of
flotation units shall be on level surfaces, and shall not be stacked. The supplier shall use the appropriate dunnage to protect the floats
while stored on site. Floats shall be protected against damage from any cause. Any damaged units shall be rejected and removed
from the site, and replaced at no additional cost.
C.Float system shall be assembled such that all float components, connections, gangways, transitions, deck surfaces, fascia boards, and
all other accoutrements necessary for a fully functioning float system as shown in the Plans and described in the technical
specifications.
END OF SECTION
REVISED - ADDENDUM A