Item2-Specifications-1240BH21Q0005.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 1/1Specification List

SPECIFICATION LIST

2021 PROSPECT ROOF REPLACEMENT BUILDING #2007

High Cascades Ranger District Rogue River – Siskiyou National Forest

Jackson County, Oregon

CONSTRUCTION SPECIFICATION INSTITUTE (CSI) SPECIFICATIONS

SECTION TITLE

DIVISION 01 – GENERAL REQUIREMENTS

01020 Intent of Contract 01025 Measurement and Payment 01200 Mobilization

DIVISION 06 – WOOD AND PLASTICS

06100 Plywood Sheathing

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

07311 Roof Replacement

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 01020 - 1/1 Intent of Contract

SECTION 01020

INTENT OF CONTRACT

1. PART 1 - GENERAL

1.01 SUMMARY

A. The intent of the contract is to provide for the complete construction of a fully functional project as described in the contract documents and Drawings. Unless otherwise provided, the Contractor shall furnish all labor, materials, equipment, tools, transportation, and supplies, and shall perform all work required to complete the project within reasonably close conformity to the Drawings and Specifications, and in accordance with provisions of the contract.

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

END OF SECTION

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 01025 - 1/2 Measurement and Payment

SECTION 01025

MEASUREMENT AND PAYMENT

1. PART 1 - GENERAL

1.01 SUMMARY

A. Measurement and payment for contract work will be made only for and under those pay items included in the Schedule of Items. All other work, labor, materials, equipment, and incidentals necessary to successfully complete the project will be considered as included in the payment for items shown. This section defines the method of measurements and basis of payment for work items listed in the Schedule of Items.

B. When more than one class, size, type, thickness, etc. is specified in the Schedule of Items for any pay item, suffixes will be added to the item number to differentiate between the pay items.

C. Not all units and measurement methods may be used under this Contract.

1.02 DETERMINATION OF QUANTITIES

A. The following measurements and calculations shall be used to determine contract quantities for payment.

1. For individual construction items, longitudinal and lateral measurements for area computation shall be made horizontally or corrected to horizontal measurement unless otherwise specified. Measurements for geotextiles, netting, and erosion control blankets shall be along slope lines.

2. For structures they shall be measured according to neat lines shown on the Drawings or as altered by the CO, in writing, to fit field conditions.

3. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, piping, utilities, and underdrains, measurement shall be made parallel to the base of foundation upon which the structures are placed.

4. For standard manufactured items (such as fence, wire, plates, rolled shapes, pipe conduits) identified by gauge, weight, section dimensions, and so forth, such identifications shall be considered the nominal weights or dimensions.

Unless controlled by tolerances in cited specifications, manufacturer's tolerances shall be accepted.

1.03 UNITS OF MEASUREMENT

A. Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

1. Square (SQ): 100 square feet unit, measured on the surface of roof plane.

2. Lump Sum (LS): One complete unit, not directly measured. The bid amount is complete payment for all work described in the contract and necessary to complete the work for that item.

3. Square Foot (SF): Measured on a plane parallel to the surface being measured.

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 01025 - 2/2 Measurement and Payment

1.04 METHOD OF MEASUREMENT

A. One of the following methods of measurement for determining final payment is designated on the Schedule of Items for each pay item:

1. ACTUAL QUANTITIES (AQ) - These quantities are determined from actual measurements of completed work.

2. DESIGNED QUANTITIES (DQ) - These quantities denote the final number or units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units shown in the Schedule of Items may be authorized under any of the following conditions:

a. As a result of changes in the work authorized by the CO.

b. As a result of the CO determining that errors exist in the original design that causes a pay item quantity to change by 15 percent or more.

c. As a result of the Contractor submitting to the CO a written request showing evidence of errors in the original design that cause a pay item quantity to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

3. LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 01200 - 1/1 Mobilization

SECTION 01200

MOBILIZATION

1. PART 1 - GENERAL

1.01 SUMMARY

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

2. PART 2 - PRODUCTS (NOT USED)

3. PART 3 - EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 PROGRESS PAYMENTS WILL BE MADE AS FOLLOWS:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

C. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

D. The total of all payments shall not exceed the original contract amount for this item.

4.02 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01200-1 Mobilization Lump Sum

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 06100 - 1/2 Plywood Sheathing

SECTION 06100

PLYWOOD SHEATHING

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies replacement of deteriorated plywood sheathing prior to placement of roofing materials.

1.02 RELATED SECTIONS

A. 07412 Roof Replacement

1.03 QUALITY ASSURANCE

A. Furnish materials complying with the following:

1. Plywood.

a. Graded in accordance with APA PS 1-95. Furnish panels identifiable by a grade trademark of a recognized grading association

2. All materials and construction techniques shall meet applicable local codes or the requirements herein, whichever is stricter.

2. PART 2 - PRODUCTS

2.01 MATERIALS

A. Roof Sheathing.

1. (Concealed Surfaces) CDX ext. plywood; match existing thickness.

3. PART 3 - EXECUTION

3.01 CONSTRUCTION

A. Roof Sheathing.

1. Upon removal of existing roofing materials, notify CO of any deteriorated sheathing.

2. Existing deteriorated sheathing shall be removed and replaced as directed by

CO.

3. Cut existing sheathing to provide ¾” bearing to each roof rafter. Do not penetrate top of existing rafters with saw blade.

4. Re-nail existing sheathing cut edge with 8d nails at 6 inch on center at edges.

5. Apply plywood roof sheathing with the face grain at right angles to supports.

Stagger end joints. Nail with 8d nails 6 inch on center at edges and 12 inch on center at intermediate supports.

6. Sheathing shall be installed to provide continuous span over a minimum of two spans.

Rev. Date 01/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 06100 - 2/2 Plywood Sheathing

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASURMENT:

A. Measurement will be made per square foot of sheathing removed and replaced.

4.02 BASIS OF PAYMENT

06100-1 Sheathing Replacement Square Foot

Rev. Date 02/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 07311 - 1/4 Roof- Replacement

SECTION 07311

ROOF REPLACEMENT

1. PART 1 - GENERAL

1.1 SUMMARY

A. This section specifies work related to removing and disposing of existing roofing materials and the furnishing and installing a new asphalt shingle roof complete with flashings, vents, and other related accessories.

1.2 RELATED SECTIONS

A. 06100 Plywood Sheathing

1.3 SUBMITTALS

A. Manufacturer's catalog cuts and installation recommendations.

B. Samples: Furnish sample for each of the following:

1. Shingles: Strip of color selected in each style selected.

2. Metal Flashing: Representative sample to assure color match with shingles.

3. Underlayment: Product literature to demonstrate compliance.

4. Roof Vent: Product literature to demonstrate compliance.

5. Eave & Gable Drip Edge: Sample to demonstrate size, configuration, and color.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Deliver shingles in manufacturer's original, unopened, protective packaging.

Comply with manufacturer's recommendations for protection.

1.5 WARRANTY

A. Furnish a written 30 year minimum warranty on shingles and a 5 year guarantee against a defective roofing system, including repairing to maintain a watertight condition. Before beginning work, report to CO if any specification requirements conflict with shingle manufacturer's warranty requirements.

1.6 EXISTING CONDITIONS

A. See figures as follows for perspective views of the existing roof to be replaced.

2. PART 2 - PRODUCTS

2.1 MATERIALS

A. Underlayment.

1. Synthetic, GAF Tigerpaw, or approved equal.

B. Shingles.

Rev. Date 02/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 07311 - 2/4 Roof-

1. Architectural, composition shingles, minimum weight 260 lbs/ square, minimum 30 year guarantee, class A fire rating, fiberglass reinforced, with Algae Resistance, Owens Corning Oakridge series or approved equal.

2. Color: To be determined from color samples.

C. Roof vents

1. Round or square prefabricated metal dome vents with screen. Sized to match existing vents.

2. Color: Similar to shingle color selected.

D. Ridge cap.

1. High profile to match shingles style and manufacturer.

E. Fasteners for shingles.

1. Roofing nails, hot-dipped galvanized, 11 gauge or 12 gauge, 1-1/4 inch long barbed shanks with 3/8 inch to 7/16 inch diameter heads. Staples will not be allowed. At exposed overhangs, provide nails to not penetrate underside of sheathing.

F. Gable drip edge

1. 26 gauge preformed, corrosion-resistant metal, 2” on roof and minimum 2” vertical leg with drip edge.

2. Color: Similar to shingle color selected.

G. Eave drip edge

1. 26 gauge preformed, corrosion-resistant metal, 2”x 1.5” or as required to lap over top of gutter.

2. Color: Similar to shingle color selected.

H. Metal flashing (valley flashing, step flashing, counter flashing, and other).

1. 26 gauge corrosion-resistant metal sized as needed.

2. Color: Similar to shingle color selected.

I. Pipe jacks and other roof penetrations

1. 26 gauge galvanized metal with rubber boot sized to fit pipe or conduit.

3. PART 3 – EXECUTION

3.1 DELIVERY

A. Contractor shall coordinate with shingle and underlayment supplier to deliver and place all roofing materials on the existing roof to provide for uniform distribution and avoid load concentrations. Contractor shall provide designated representative to be onsite during delivery of all materials.

3.2 CONSTRUCTION

A. Removal

1. Remove and dispose of all existing roof materials including all trim, flashing, fasteners, felt, etc. All removed roofing materials shall become the property of the contractor and shall be removed from National Forest Land.

Rev. Date 02/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 07311 - 3/4 Roof-

2. Clean existing plywood sheathing of any debris.

3. Drive flush all sheathing nails that have worked out.

4. Re-nail all sheathing that has become loose.

5. Replace any deteriorated sheathing as directed by CO (see section 06100)

B. Gable Drip Edge

1. Install at all gables using roofing nails at 12 inches on center.

C. Eave Drip Edge

1. Install at eaves using roofing nails 12 inches on center. Lap over top edge of existing gutters.

D. Underlayment.

1. Center a 36 inch width in each valley and tack in place. Then beginning at edge of roof, lay felt parallel to eaves and lap each course 2 inches over underlying course. Lap ends 4 inches and stagger end laps 6 feet minimum.

Lap felts 6 inches onto valley and lap the felt 6 inches from both sides over all hips and ridges. Where roof meets a vertical surface, carry underlayment 4 inches up the surface. Tack in place.

E. Roof Penetration Flashing.

1. Install preformed metal flashing under shingles on upslope and on top of shingles on downside. Do not try to conceal downside of flashing. Provide counter flashing as required.

F. Roof vent

1. Install at existing locations in accordance with manufacturer’s specifications.

G. Laying Shingles.

1. Snap horizontal and vertical chalk guidelines on underlayment, then lay shingles following manufacturer's instructions. Construct ridges from pre-manufactured ridge cap material.

2. During removal and placement of new roof, Contractor shall take temporary measures to assure a watertight roof during wet weather. Stage work as necessary.

H. Cleanup.

1. Remove all excess materials from National Forest Land and clean all gutters and downspouts.

3.3 INSPECTION

A. Surface to which the roofing is to be applied shall be even, smooth, sound, clean, and dry. Do not begin roofing work until surface deficiencies have been corrected and inspected.

4. PART 4 - MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASURMENT:

A. Roof Replacement

Rev. Date 02/21 2021 PROSPECT ROOF REPLACEMENT BUILDING #2007 07311 - 4/4 Roof-

1. Measurement will be made of completed roof as shown in the Drawings and Specifications.

4.2 BASIS OF PAYMENT

07311-1 Roof Replacement Square

3. LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

2. All materials and construction techniques shall meet applicable local codes or the requirements herein, whichever is stricter.