Attach3.1240LU26Q0034PhotosMapsSpecifications.pdf

United States Department of Agriculture Forest Service-Region One

Custer Gallatin National Forest Yellowstone and Bozeman Ranger Districts

GAOA Battle Ridge Cabin and Ibex Cabin Roof Replacement 1BF

Approved by: Forest Engineer Date

Recommended by: Bozeman District Ranger Date

Recommended by: Yellowstone District Ranger Date

Approved by: Forest Supervisor Date

PROJECT LOCATION

Ibex Cabin

PROJECT LOCATION

Battle Ridge Cabin

FIGURE 1 VICINITY MAP

Battle Ridge and Ibex Cabins from Bozeman, MT

BATTLE RIDGE

CABIN IBEX CABIN

BOZEMAN,

MT

FIGURE 2 BATTLE RIDGE CABIN AERIAL IMAGE

CABIN

FIGURE 3 VICINITY MAP

Battle Ridge Cabin from Bozeman

FIGURE 4 BATTLE RIDGE CABIN SOUTH EAST VIEW

BOZEMAN

CABIN

FIGURE 5 BATTLE RIDGE CABIN NORTH VIEW

FIGURE 6 BATTLE RIDGE CABIN WEST VIEW

FIGURE 7 IBEX CABIN SOUTH WEST VIEW

FIGURE 8 IBEX CABIN WEST VIEW

FIGURE 9: VICINITY MAP: IBEX CABIN FROM CLYDE PARK, MT

IBEX CABIN

CLYDE PARK,

MT

SECTION 01000

MOBILIZATION

PART I: GENERAL

1.1 SUMMARY

A. Section Includes: Preparatory work and operations, including those necessary to the movement of personnel, equipment, supplies and incidentals to the project site; and for other work and operations which must be performed, or costs incurred prior to beginning work on the various items on the project site. This specification does not include moves between project sites.

PART II: PRODUCTS

(There are no applicable requirements.)

PART III: EXECUTION

(There are no applicable requirements.)

PART IV: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: Progress payments will be made as follows:

1. When 5% of the original Contract amount is earned from other bid items, 50% of the amount bid for mobilization or 5% of the original Contract amount, whichever is lesser, will be paid.

2. When 10% of the original Contract amount is earned from other bid items, 100% of the amount bid for mobilization or 10% of the original Contract amount, whichever is lesser, will be paid.

3. Upon completion of work for the project, payment of the amount bid for mobilization in excess of 10% of the original Contract amount will be paid.

4. The total sum of all payments shall not exceed the original Contract amount bid for mobilization, regardless of the fact that the Contractor may have shut down the work on the project or moved equipment away from the project and then back again.

4.2 BASIS OF PAYMENT:

Payment: No direct payment for moves between project sites will be made. The Contractor shall include consideration for moves between project sites in the bid price for other items of the Contract. Prices and payment will be full compensation for the work described in this section. Payment will be made under:

Pay Item Pay Unit

(01000) Mobilization. . . . . . . . . . . . . . . . . Lump Sum

END OF SECTION

SECTION 01025

MEASUREMENT AND PAYMENT

PART I - GENERAL

1.1 Measurement and Payment - 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 and materials will be considered as included in the payment for items shown.

When more than one class, size, or thickness is specified in the SCHEDULE OF ITEMS for any pay item, suffixes will be added to the item number to differentiate between items to be bid.

1.2 Determination of Quantities - The following methods of measurement are used to determine contract quantities for payment.

For individual construction items, longitudinal and lateral measurements for area computations will be made horizontally or corrected to horizontal measurement unless otherwise specified.

Measurements for seeding, mulching, geotextiles, netting, erosion control blankets, and sodding will be along slope lines.

Structures will be measured according to neat lines SHOWN ON THE DRAWINGS or as altered by the COR in writing to fit field conditions.

For standard manufactured items, such as fence, wire, plates, rolled shapes, pipe conduits, etc., identified by gauge, weight, section dimensions, etc., such identification shall be considered the nominal weights or dimensions. Unless controlled by tolerances in cited specifications, manufacturer's tolerances will be accepted.

1.3 Units of Measurement - Payment will be by units defined and determined according to U.S.

Standard measure as follows:

A. Acre – Make longitudinal and transverse measurements for area computations horizontally.

B. Cubic Yard - A measurement computed by one of the following methods:

1. Excavation, Embankment, or Borrow - The measurement computed by the average end area method from measurements made longitudinally along a centerline or reference line.

2. Material in Place or Stockpile - The measurement computed with dimensions of the in-place material.

3. Material in the Delivery Vehicle - The measurement computed using measurements of material in the hauling vehicles at the point of delivery.

Vehicles shall be loaded to at least their water level capacity. Leveling of the loads may be required when vehicles arrive at the delivery point.

C. Cubic Yard Mile - A combination of linear and volumetric measurement meaning the movement of a cubic yard of material 1 mile.

D. Each - One complete unit, which may consist of one or more parts.

E. Gallon – The quantity may be measured by any of the following methods:

1. Measured volume container.

2. Metered volume. Use an approved metering system

3. Commercially packaged volumes.

F. Hour – Measurement will be for the actual number of hours ordered and performed by the Contractor.

G. Linear Foot – Measure from end to end, parallel to the base or foundation being measured, or horizontal.

H. MFBM - One thousand board feet measure based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job.

I. Mile – Measure horizontal along the centerline of each roadway, approach road, or ramp.

J. Pound – If sacked or packaged material is furnished, the net weight as packed by the manufacturer may be used.

K. Square Foot - Measure on a plane parallel to the surface being measured or horizontal.

L. Square Yard – Measure on a plane parallel to the surface being measured or horizontal.

M. Station - One hundred linear feet measured horizontally.

N. Station Yard - A combination of linear and volumetric measurement meaning the movement of a cubic yard of material one station.

O. Thousand Gallons Mile - A combination of linear and volumetric measurement meaning the movement of 1,000 gallons of material 1 mile.

P. Ton - Short ton consisting of 2,000 pounds.

Q. Ton Mile - A combination of linear and weight measurement meaning the movement of

1 ton of material 1 mile.

1.4 Methods of Measurement - One of the following methods of measurement for determining final payment is DESIGNATED on the SCHEDULE OF ITEMS for each pay item:

A. Contract Quantities (CQ) AND Design Quantities (DQ) - These quantities denote the final number of 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:

1. As a result of changes in the work authorized by the Contracting Officer.

2. As a result of the Contracting Officer determining that errors exist in the original design data used to determine designed quantities that cause a pay item to change by more than 15 percent.

3. As a result of the Contractor submitting to the Contracting Officer a written request showing evidence of errors in the original design data used to determine design quantities that cause a pay item total to change by more than 15%. 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.

B. Staked Quantities (SQ) - These quantities are determined from staked measurements prior to construction.

C. Actual Quantities (AQ) - These quantities are determined from measurements of completed work.

D. Vehicle Quantities (VQ) - These quantities are measured or weighed in hauling vehicles.

E. 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 will not be measured.

PART II - PRODUCTS (Not Applicable)

PART III - EXECUTION (Not Applicable)

SECTION 01400

QUALITY CONTROL AND QUANTITY MEASUREMENT

PART I - GENERAL

1.1 Scope - This work shall consist of providing quality control in conformance with the Inspection of Construction provisions of this contract to ensure compliance with the drawings, specifications, and provisions of the contract, and measuring the quantities of completed work in conformance with the provisions of the applicable specifications. The Contractor shall provide all personnel, equipment, tests, and reports necessary to meet the requirements of this specification.

1.2 Measurement and Payment - No separate payment will be made for the work included under this section. Payment for this work is considered incidental to other items of work.

PART II - PRODUCTS (Not Applicable)

PART III – EXECUTION (Not Applicable)

SECTION 073129

WOOD SHINGLES

PART 1 – GENERAL

1.1 DESCRIPTION OF WORK

A. Provide labor, equipment, and materials to reroof Battle Ridge Cabin and Ibex Cabin.

Work shall consist of stripping off the old shingles and underlayment (if existing) and disposing of the material in an approved dump site, repairing or replacing sheathing if needed, installing new cedar shingles with underlayment, installing roof anchors, and all other necessary work to deliver a complete, sound, professional, weathertight roofing system.

B. Buildings are Forest Service owned and are listed on or considered eligible for listing on the National Register of Historic Places. Therefore, all work shall adhere to guidance from the Secretary of Interior’s Standards for Rehabilitation of Historic Buildings.

1.2 SUBMITTALS

A. Submit technical product data, installation instructions, and recommendations from shingle manufacturer, the Cedar Shake and Shingle Bureau, and any other relevant installation information, including data that materials comply with requirements.

1.3 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials in manufacturer’s unopened bundles, rolls, or containers with labels intact. All materials must be new, unexpired, and in good condition.

B. Store materials to avoid water damage and store rolled goods on end. Comply with manufacturer’s recommendations for job-site storage and protection.

1.4 UNKNOWN FINDS

A. As with all historic buildings, some construction elements, conditions, material types, artifacts, and archaeological materials, features, and/or artifacts may be hidden upon initial inspection. If previously hidden elements, conditions, material types, artifacts, and/or archaeological materials, features, and/or artifacts are revealed, cease work in the immediate and/or affected area(s) and contact the Forest Service COR and/or Inspector immediately. No work is to be performed outside the scope of this contract.

1.5 JOB CONDITIONS

A. All other areas of the structure, vegetation, and grounds are to be fully protected from the impacts of this work. Do not damage surrounding building fabric, elements, or structure in any way. Do not attach, nail, or staple any item(s) to the structure unless it is directly related to the roof work and approved by the COR.

B. If vegetation or trees are in the way of scaffolding, ladders, and/or equipment, consult with the COR regarding the vegetation or trees before cutting and pruning.

C. Be aware of constantly changing weather conditions and the potential impact to the structure and ongoing work. If work should be rescheduled or redirected due to weather conditions, consult with the COR. Keep all work areas dry and free of construction debris and snow, ice, and water. Protect all work and all areas of the structure from the effects of precipitation and weather. The contractor is responsible for any and all damage that may occur due to their negligence or failure to protect the structure. If removing structural elements of the facility (e.g. sheathing), consider the effects of worker loading, wind loading, etc. and sequence work appropriately.

D. Complete daily cleanup of the job site. Where demolition work creates debris, including in the interior of the building, clean this debris up promptly. Where the opening of previously closed spaces uncovers objectionable material, provide cleanup of up to 1 five gallon bucket per square of roofing. Follow all related CDC and OSHA guidelines.

E. Proceed with installation work only after substrate construction and penetrating work have been completed.

F. Proceed with installation work only when weather conditions are in compliance with manufacturer’s recommendations and when substrate is completely dry.

G. Provide temporary barriers to keep the public at a safe distance away from the project.

PART 2 – PRODUCTS

2.1 WOOD SHINGLES

A. Shingles must be Western Red Cedar, Number One Grade, edge grain, heartwood, and certified by the Cedar Shake and Shingle Bureau. Shingles shall conform with CSSB-97. The Bureau’s website can be found at: http://www.cedarbureau.org/.

B. Upon delivery, shingles will be inspected for the CSSB label.

a. Blue Label American Certified shingles are not acceptable

C. Shingle type

a. 16 inch

D. Shingle weather exposure: Use the existing exposure found on the historic building.

Shingle exposure is usually 5-5.25 inches for 16 inch shingles

2.2 NAILS

http://www.cedarbureau.org/

A. For roof: hot-dipped zinc-coated box nails which shall be long enough to penetrate into sheathing half to three-quarters of the way. Do not fully penetrate the sheathing.

Nails for 24 inch shingles may range from 3d to 8d, depending on the size and thickness of the shingles. Follow shingle manufacturers guidelines when selecting nail weight.

B. For hips and ridges: hot-dipped zinc-coated box nails which shall be long enough to penetrate into sheathing half to three-quarters of the way. Do not penetrate the sheathing. Nails may range from 4d to 8d.

2.3 ICE BARRIER

A. Self-adhering rubberized roofing membrane, Grace Ice and Water Shield for non-metal roofs, or equal.

2.4 SHEATHING

A. Match existing – use one of the following

a. ¾ inch rough sawn or dimensional lumber. Use select grade kiln-dried fir or larch lumber.

b. 1 x 6 shiplap lumber. Use select grade kiln-dried fir or larch lumber.

c. 1 x 8 shiplap lumber. Use select grade kiln-dried fir or larch lumber.

2.5 FLASHING

A. Galvanized steel flashing

a. 30 gauge for sheet or rolled flashing used as step, apron, cap, and counterflashing.

b. 26, 28, or 30 gauge valley flashing, either V or W shaped to match existing.

B. Rubber boot flashing

a. Only to be used on vent pipes. May be supplemented with galvanized steel flashing.

C. Lead flashing

a. If lead flashing is found, consult with the COR regarding its reuse.

i. If the flashing is in good condition, reuse if practicable in place of galvanized or rubber boot flashing.

ii. Follow all appropriate OSHA and CDC guidelines when working with lead.

2.6 RIDGECAP

A. The ridge cap shall match existing.

B. Ridge cap

a. Metal – The intent of this Contract is to Reuse the existing ridge cap. If replacement is necessary, notify the CO. If replacing, match the new ridge cap to the existing with 24 or 26 gauge galvanized steel.

i. Metal ridge caps may or may not have end caps. If the existing ridge cap has end caps or the historic photos show end caps, replace in kind.

If the existing end caps are in good condition, reuse the existing.

Otherwise, match the new end caps to the existing with 26 gauge galvanized steel.

2.7 ROOF ANCHORS

A. Permanent fall protection roof anchors, stainless steel or powder-coated steel.

a. Must meet OSHA and ANSI Z359.1-07 requirements.

b. Acceptable Manufacturers

i. Superior Anchor Safety (SAS) D-Minus D-Label 1.2 Part No. 1075

ii. Or approved equal

c. May be used by roof installer as part of a Fall Protection Plan

2.8 DRIP EDGE

A. No metal or other drip edge is to be installed.

2.9 GUTTERS

A. If gutters and/or downspouts are existing on the building, remove, inspect, and replace as needed. Use only galvanized half round gutter and matching downspouts, 24 or 26 gauge in 5 or 6 diameter or match existing diameter. Install according to manufacturer’s direction.

B. Do not install modern or “K” gutters.

3.0 DECORATIVE ELEMENTS

A. If decorative elements occur, replace in-kind. Decorative elements can include:

a. Double coursing. If this is present, it is usually a double course of shingles every fourth course. Replace in-kind to match the original.

i. *no cabin on this project* uses Double Coursing every 5th row.

PART 3 – EXECUTION

3.1 GENERAL

A. Clean substrate of any projections and substances detrimental to roofing work.

B. Remove all nails, screws, staples, etc. Do not pound nails, staples, etc. into the sheathing or pound flat. All nails, screws, staples, etc., must be removed. Use a magnet to pick up all nails, screws, staples, flashing, etc. from the ground.

C. Coordinate installation of shingles with flashing and other adjoining work to ensure proper sequencing.

D. Do not install shingle roofing until all vent stacks and other penetrations through roofing have been installed and are securely fastened against movement.

E. Hand-nailing the shingles is required. Nails must not be left proud, nor must they be driven below the surface of the shingle.

F. Personnel working on the roof are not allowed to wear spiked or cleated shoes in order to prevent damage to the shingles. Soft-soled shoes only.

G. If the contractor uses a harness and/or safety rigging to conduct roof work, the contractor must supply a Fall Protection Plan that complies with applicable OSHA standards. The Forest Service COR and/or the Inspector may provide their own harness and/or safety rigging that also complies to these standards.

H. Adjust exposure if necessary when about midway between eave and ridge so that coursing will appear uniform. Ensure that the coursing is even within the last 3 courses of the ridge cap.

I. Do not use broken shingles. Do not use shingles less than 4 inches in width. Do not use shingles over 10 inches in width. Shingles over 10 inches may be cut or cleanly split down to the appropriate width.

J. Install flashing around projections through roof as required to make a watertight structure.

3.2 ROOF APPLICATION

A. Replace sheathing that has experienced excessive rot/decay. Any sheathing boards that have rot pockets that penetrate through the board, are more than 3 inches in size, or affect more than 25 percent of the board must be replaced in kind. Boards may be fully replaced, replaced between joists, or several roof joists depending on the severity of rot.

1. Mark sheathing to be replaced with a grease pencil, chalk, or other non-permanent method.

2. Allow COR to observe sheathing marked for replacement prior to any removal

3. Boards marked for removal can be plunge cut and/or removed by pulling the nails. Do not damage adjacent boards.

4. The maximum amount of sheathing to be removed at a time is limited to 25% of the roof deck or as specified by the COR.

B. In addition to details indicated, comply with installation details and recommendations of the Reroofing with Wood Shakes and Reroofing with Wood Shingles sections from “Dovetails and Broadaxes: Hands-on Log Cabin Preservation, found at http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-196.pdf

196.pdf. Shake information starts on page 187, shingle information starts on page 181.

1. Install ice and water shield over the entire roof in lieu of felt underlayment.

Install according to manufacturer’s recommendations. If installing on a warm or hot day, ensure that the underlayment is not damaged by workers during the install.

2. Use hot-dipped zinc-coated box nails which shall be long enough to penetrate into sheathing half to three-quarters of the way. Do not fully penetrate the sheathing. Nails may range from 3d to 8d. Note that nail penetration only acceptable on the starter courses, other sheathing nail penetration is not acceptable.

3. Use triple coverage roof construction, with a triple starter course. Please see the Reroofing with Wood Shakes and Reroofing with Wood Shingles sections from “Dovetails and Broadaxes: Hands-on Log Cabin Preservation, found at http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165- 196.pdf. Shingle information starts on page 181.

4. Install roof with 1 inch overhang on rake edge and 1 ½ inches on eave edge unless specified otherwise.

5. Install shingles, beginning at lower end with a triple layer starter course, projecting shingles 1 ½ inches beyond sheathing. Space adjoining shingles ¼ inch to 3/8 inch apart, nailing each shingle with two nails spaced ¾ to 1 inch from edge of shingle and 1 ¼ to 2 inches above exposure line of subsequent courses. Stagger edge joints a minimum of 1 ½ inches in succeeding courses.

Do not stack joints. Ensure no stacked joints in the course being laid and the two courses below (triple coverage roof). Install shingles to provide weather exposure as indicated. Cut and fit shingles at ridges and edges to provide maximum weather protection.

6. Lay with butts as straight as practicable considering the texture of the shingles.

7. Use two nails per shingle at least 1 inch from edge and about 1 inch or 2 inches above the butt line of the following course. Ensure that the heads of each nail remain on the surface of the shingle - do not pound the nail head into the shingle. Do not use waffle-head hammers, only smooth head hammers.

8. Do not use broken shingles. Do not use shingles less than 4 inches in width.

Do not use shingles over 10 inches in width. Shingles over 10 inches may be cut or cleanly split down to the appropriate width.

9. Ensure that nails are set flush with the surface of the shingle. Do not over or under drive nails.

a. Hand-nailing the shingles is preferred; however, pneumatic and/or battery tools are acceptable provided the air pressure and/or tool pressure is checked hourly to ensure the nails are driven flush with the surface of the shingles. Nails must not be left proud, nor must they be driven below the surface of the shingle.

b. Nails must penetrate at least halfway through the thickness of the sheathing but must not penetrate completely through the sheathing except for the starter courses.

c. Ensure that nail heads are not exposed (no “shiners” are allowed).

d. Use only smooth-faced hammers.

C. Flashing

1. If applicable, remove and re-install the existing metal ridge or hip caps.

Metal hip caps damaged from removal shall be replaced at contractor’s expense.

2. Install metal flashing and vent flashing as needed and in accordance with details and recommendations of the Reroofing with Wood Shingles section from “Dovetails and Broadaxes: Hands-on Log Cabin Preservation, found at http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165- 196.pdf, starting on page 169.

3. Install step flashing as needed along dormers, chimneys, etc. as needed and in accordance with details and recommendations of the Reroofing with Wood Shingles section from “Dovetails and Broadaxes: Hands-on Log Cabin Preservation, found at http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165- 196.pdf, starting on page 169.

4. Replace valley flashing in accordance with details and recommendations of the Reroofing with Wood Shingles section from “Dovetails and Broadaxes:

Hands-on Log Cabin Preservation, found at http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165- 196.pdf, starting on page 175. Valleys should have 4 to 8 inches of exposed metal in the middle and extend 8 to 12 inches beyond the centerline of the valley.

D. Roof Anchors

1. Permanent roof anchors are to be installed in several locations in the roof face. The contractor is to create a permanent roof anchorage plan prior to commencing roof work and coordinate the plan with the COR.

2. Use Superior Anchor Safety (SAS) D-Minus D-Label 1.2 Part No. 1075 anchors or approved equal.

a. Roof anchors are to be set into a joist or purlin according to the manufacturer’s directions, using appropriate fasteners.

b. For a gable roof, set anchors so that a person can climb to the peak of the roof, move along the peak, and reach all eaves. For example, anchors may be set in a line up the roof face and along the peak: Set http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-196.pdf http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-196.pdf http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-196.pdf http://fsweb.mtdc.wo.fs.fed.us/pubs/pdfpubs/pdf15232802/Part08-Pages-165-196.pdf the first anchor 2 feet from the eave edge and continue up the roof face with anchors set 3-4 feet apart until reaching the peak; then set anchors 6 to 8 feet apart 6 to 12 inches below the ridge cap for the length of the ridge cap. If the roof face is large enough, repeat the roof face anchor line in two or three places.

E. Ridge caps

1. Metal ridge caps may be reused if they are in good condition. If the ridge caps must be replaced, replace in kind. If end caps are or were present, re-install to match original.

F. Extra Stock

1. Provide one unopened clearly labeled bundle of shingles (per structure) for future maintenance use by the Government.

a. Total of TWO unopened, labeled bundles of shingles.

Figure 10: Superior Anchor Safety D-Minus D-Label 1.2 Part No. 1075 Example

FIGURE 11: SHINGLE LABEL EXAMPLE