002-StatementofWork.pdf

USDA FOREST SERVICE PROJECT STATEMENT OF WORK

Revised 01/2010 Umpqua Beach Picnic Shelter Renovation, 2010 Page 1 of 10

Umpqua Beach Picnic Shelter Renovation Statement of Work

Umpqua Beach Picnic Shelter

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Siuslaw National Forest Umpqua Beach Picnic Shelters

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1. PART 1 - GENERAL

1.01 SUMMARY

A. This Statement of Work specifies the proposed upgrades to the Umpqua Beach Picnic Shelter.

B. The Contractor shall be responsible for furnishing all labor, equipment, materials, and incidentals needed to perform the work according to this Statement of Work.

C. All construction activities shall be done in compliance with Oregon Occupational Safety and Health Administration (OSHA) guidelines.

D. The Contractor shall be responsible for protecting all existing site improvements. In the event of damage caused by the Contractor to improvements not designated for demolition, the Contractor shall stop all work associated with the damage, notify the Contracting Officer, and repair the damage at the Contractor’s expense.

E. The Contract will involve both Base and Optional work. The Contractor shall bid on both Base and Optional bid items. The Contract will be awarded for the Base bid items at a minimum. Optional bid items will be awarded based on funding available.

F. The finished project shall yield an installation that is safe, secure, durable, functional, and aesthetically pleasing.

1.02 EXISTING CONDITIONS

A. A site visit is encouraged prior to bidding to become more familiar with the structure and the specific connections to be replaced.

B. Refer to the first page of this Statement of Work for a general photo of the existing structure.

C. The facility has been closed to the public since October of 2007 due to concerns about its structural integrity.

D. There is electricity available in the picnic shelter that is available for reasonable use to the Contractor.

E. All steel connections such as column caps, angles, and gusset plates are visibly corroded. In some cases, bolt assemblies are completely rusted through, which allows some components to detach from the timbers:

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F. The top of some of the columns show cracking. presumably caused by the corroding column caps:

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G. The wooden structure of the roof is composed of 4X8 beams and 2X6 decking:

The 4X8 beams are spaced 4 feet on center. Although many of the timber members are discolored in the location of the connections, they appear to be sound and without decay.

H. The vertical supports for the structure are composed of concrete columns as shown in the photos.

1.03 SUBMITTALS

A. Submittals shall clearly identify the product/material that is proposed for use, and shall include sufficient information to demonstrate full compliance with this Statement of Work for the product/material proposed.

B. Submit to the Contracting Officer a detailed demolition/construction plan.

The Contractor shall allow enough time for review and approval at least 14 days in advance of schedule dates (unless otherwise stated) to give Forest Service staff time to prepare for partial closures and other disruptions.

2. PART 2 – PRODUCTS

2.01 GENERAL

A. The Contractor shall ensure that all materials are transported and stored properly according to the manufacturer’s recommendations, and that the materials are in good condition when installed. All materials shall be

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2.02 FASTENERS (BASE ITEM)

A. Due to the close proximity of these buildings to the ocean, Grade 316 stainless steel fasteners shall be used for all new connecting hardware, such as bolts, washers, brackets, gusset plates, and column caps.

B. Column caps shall be fabricated with ¼”-thick Grade 316 stainless steel.

All other connections shall be fabricated with 1/8”-thick Grade 316 stainless steel.

C. See the Project Drawings for additional details on the fasteners.

2.03 CONCRETE SEALER (BASE ITEM)

A. Use Lone Star Epoxies “Super Seal” Penetrating Concrete Sealer, or approved equivalent product.

B. Shall prevent freeze/thaw damage, improve the overall strength of the structure, and protect the encapsulated steel from further corrosion.

2.04 CONCRETE PATCH (BASE ITEM)

A. Use Lone Star Epoxies LSE 7000 Rapid Cure Concrete Patch, or approved equivalent product.

B. Shall be a low-shrink, fast setting, fiber reinforced, resin modified heavy duty concrete repair mortar.

C. Formulated to meet the ASTM C 928 requirements for Packaged, Dry, Very

Rapid Hardening Cementitious Materials for Concrete Repair.

2.05 SINGLE MEMBRANE ROOFING SYSTEM MATERIALS (OPTIONAL

ITEM)

A. Supply Thermoplastic Duro-Last® Roofing System, or approved equivalent product.

B. Roof decking shall be 2X6 tongue-and-groove decking; Commercial Dex.;

DF; S-dry.

C. Performance Requirements

1. Fire Class

a. The entire roofing system shall have a minimum Underwriter's

Laboratory (UL) Class B fire rating. Provide certification from manufacturer of compliance.

2. Wind Uplift

a. The entire roofing system shall be rated to withstand wind uplift for a wind velocity of up to 110 miles per hour or be rated for the Factory Mutual 52 and UL 580 wind uplift class. Provide written certification from manufacturer of compliance.

D. Submittals

1. Submit sufficient descriptive literature to ensure product compliance with the specifications. They may be in the form of manufacturer's

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a. Single Membrane Roofing System

b. Maintenance instructions

c. Complete warranty information.

d. Contractor's certification and past project list

E. Quality Assurance

1. The Contractor shall be approved or certified by the manufacturer of the roofing system for proper application of this type roofing system.

2. Product physical certifications:

a. Approved by Factory Mutual as a 1-60, 1-90, 1-105, 1-150, and 1- 210 roofing system.

b. Listed as a Underwriter’s Laboratory Class A material.

c. International Building Code approved.

3. The Contractor shall have a minimum of 2 years experience in applying the type of single membrane roofing system they will be installing on this project.

4. Provide list of projects completed using the product furnished.

F. Delivery, Storage, and Handling

1. Deliver materials in unbroken packages and store off of the ground protected from the weather as recommended by the manufacturer.

The Government will not be able to provide inside lockable storage at the project site for the Contractor.

G. Project Conditions

1. Do not apply any roofing during rainy, damp, or freezing weather, or when the air temperature is below 40 degrees F. If manufacturer's recommendations are stricter, they shall govern. Protect roof after the existing roofing is removed. The Contractor shall be responsible for any damage to the existing buildings and their contents from weather.

H. Warranty

1. Provide manufacturer’s warranty to provide 10 year warranty period on repair and replacement for the following items:

a. Any failure of any part of the roofing system that allows water to penetrate beneath the roofing membrane.

b. Deterioration of roofing membrane or base flashing from ordinary wear and tear by the elements, including damage from ice, snow, and ponding water.

c. Errors or mistakes in workmanship by the manufacturer approved Contractor in installing the roofing membrane or base flashing.

d. Blisters, fish mouths, wrinkles or ridges in the roofing membrane caused by failure of the bond between the roofing membrane and the roof surface or moisture.

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e. Splits in the roofing membrane.

f. Slippage of the roofing membrane or base flashing.

2. The warranty shall be renewable at the end of 10 years. If the company distributing the single membrane roofing material has not been engaged in the building materials business a minimum of 15 years, provide proof of an insurance policy that would ensure the Government that the warranty would be honored through the warranty period in the event of bankruptcy or merger of the installer, supplier, and/or distributor of the product.

I. Incidentals

1. Supply all appurtenances related to the roofing system provided, as recommended by the manufacturer. This includes fasteners, corner pieces, parapets, stacks, curb flashings, vents, trim, etc.

J. Attachment System

1. Torch-bonded, adhesive bonded (self or applied later), or a combination of mechanical and adhesive bonding, are acceptable methods of attachment. Irrespective of type of attachment system, the roofing membrane shall be adhered over 100 percent of the surface area.

Ballast-type anchoring, mechanical attachment, or just edge bonding will not be allowed. The type of single membrane system shall have manufacturer's approval for application over decks that can be nailed and/or roofing insulation.

K. Connecting Hardware

1. All metal hardware and fasteners used for the roofing system shall be stainless steel.

L. Flashing

1. All metal flashing used for the roofing system shall be stainless steel.

3. PART 3 - EXECUTION

3.01 SAFETY

A. The Contractor shall ensure that all demolition, disposal, and construction operations are done safely, and in such a manner as to minimize disruption to the public and Forest Service personnel.

B. Provide, erect, and maintain orange safety fencing and other security measures as necessary around the work site during all potential safety hazards created by construction activities.

C. Fencing shall be secured to steel posts spaced no more than 10 feet apart.

D. The bottom of the fence shall follow the contour of the ground.

E. The minimum height of the fence shall be 36 inches.

F. The Contractor shall be responsible for maintaining safety measures at all times during the Contract.

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3.02 PROTECTION OF EXISTING IMPROVEMENTS

A. The work of this Contract includes preserving site improvements that are to remain. In the event of damage to existing facilities or utilities, stop all work associated with the damage and notify the Contracting Officer (CO).

Repair damaged property as directed by the CO at the Contractor’s expense.

3.03 REPLACING FASTENERS (BASE ITEM)

A. Install all materials per the manufacturer’s recommendations, International and Local Building Codes, industry standards, the Project Drawings, and this Statement of Work. Where discrepencies exist between these requirements, immediately notify the Contracting Officer. The CO will have the final decision on which requirements shall apply.

B. Replace all connecting hardware, including bolts, washers, brackets, gusset plates, and column caps. Remove existing hardware carefully to prevent further damage to structural members.

C. Once the existing column caps have been removed, the Contractor shall grind the top of the columns down to a smooth, level surface and then apply the penetrating concrete sealer to prevent further corrosion of the encapsulated steel.

D. Contractor shall note that not all fasteners are to be replaced in-kind. An example is the new column caps that will straddle the columns to minimize the damage caused by the old corroding column caps. Grind the sides of the columns to yield a flush surface for attachment of the new column caps.

E. Repair the concrete columns where chipped, cracked, or otherwise damaged using the concrete sealer or the concrete patch as recommended by the manufacturer.

F. See the Project Drawings for additional details on the fasteners.

3.04 REPLACING ROTTEN MEMBERS (BASE ITEM)

A. If rotten or otherwise defective material is discovered, the Contractor shall immediately notify the CO.

B. Work with the CO to resolve any problems with the existing materials. The

Contractor shall afford the Forest Service the opportunity to inspect the defective materials prior to replacing them.

C. The Contractor shall provide an hourly cost for replacing rotten material in-kind under pay item SOW-B2.

D. The new wooden members shall match the existing wooden members in material and installation.

3.05 ROOFING INSTALLATION (OPTIONAL ITEM)

A. Roof Insulation.

1. Install new roof insulation where appropriate. Taper insulation between areas with and without roof insulation so there is a smooth transition between sections. Mechanically fasten roof insulation to the roof deck and provide wood insulation stops as recommended by the manufacturer of the roofing membrane with fasteners approved by the

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B. Single Membrane Roofing System.

1. Install 2X6 roof decking and membrane roofing on the area of the picnic shelter that does not currently have a roof. This area is approximately 37 feet long by 14 feet wide.

2. Apply fiber or gypsum board over roof insulation areas and nailable deck areas. If torch bonding is used, apply base felt instead of fiber or gypsum board over roof insulation or nailable deck. Attach fiber or gypsum board or base felt with mechanical fasteners approved by the roofing membrane manufacturer. Make sure space fasteners are at a minimum of 1 fastener for every 2 square feet. If the spacing recommended by the manufacturer is stricter for wind uplift rating, comply with the stricter requirement. At the Contractor’s option, the roof insulation and fiber or gypsum board or base felt may be attached with the same fasteners.

3. Apply roofing membrane directly over base felt or fiber or gypsum board by the attachment system recommended by the manufacturer.

Application of membrane including side and edge lap distances shall be in accordance with the roofing membrane manufacturer's recommendations. The roofing membrane shall be adhered over 100 percent of the surface area.

4. Flash all roof projections and roof edges as recommended by the roofing membrane manufacturer. Replace all roof drains and screens.

Clean out all roof drains. Use of roofing membrane as flashing, if recommended by the manufacturer, is acceptable. Extend or replace where required, vents or other roof projections where new insulation is installed.

5. Apply 2 layers of the reflective coat as recommended by the manufacturer, if the reflective coat is applied after the roofing membrane is installed. Allow roofing member to cure prior to application of reflective coat. Allow curing time period recommended by the manufacturer of the roofing membrane.

3.06 CLEANUP

A. Dispose of all construction debris legally off Government land.

B. Leave site in a safe, clean condition at the end of each work day.

4. PART 4 – MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT

A. The method of measurement shall be by the Lump Sum method for replacing corroded fasteners as specified in this Statement of Work.

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B. The method of measurement shall be by Actual Quantity for the number of hours spent to replace materials damaged by dry rot, if needed. Material costs for replacing defective members shall be included in this hourly rate.

C. The method of measurement shall be by the Lump Sum method for supplying and installing new membrane roofing materials as specified in this Statement of Work.

4.02 BASIS OF PAYMENT

A. Payment will be for the completed and accepted pay items as follows:

PAY ITEM DESCRIPTION PAY UNIT

SOW-B1 Picnic Shelter Renovation (Base) Lump Sum SOW-B2 Replacing DefectiveMaterial (Base) Hour SOW-O1 Picnic Shelter Roofing (Optional) Lump Sum

END OF SECTION

2. The warranty shall be renewable at the end of 10 years. If the company distributing the single membrane roofing material has not been engaged in the building materials business a minimum of 15 years, provide proof of an insurance policy that would ensure the Government that the warranty would be honored through the warranty period in the event of bankruptcy or merger of the installer, supplier, and/or distributor of the product.