OTO-House-Roof Supplemental Specifications.pdf

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:

1.2 Units: Progress payments will be made as follows:

1.3 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

1.4 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:

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

1.6 Cubic Yard – A measurement computed by one of the following methods:

1.7 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.

1.8 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:

1.9 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.

1.10 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:

1.11 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:

1.12 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.

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

1.14 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

1.15 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 07000

BUILDING MAINTENANCE

1.16 Scope of Contract.

Contractor is responsible for transportation, tools, labor, equipment, personal protective equipment, and material disposal necessary to complete the work. All materials generated from the project are to be removed from the site and disposed of in a legal manner off National Forest System lands. Disposal shall comply with all local, state, and federal regulations.

The Contractor will provide all materials, equipment, and labor to remove and reshingle the OTO House at the Gardiner Ranger District OTO Compound which is located near Gardiner, MT.

1.2 Section Requirements

A. Remove existing asphalt roofing system down to existing wood sheathing. Furnish and install new composition shingle roofing system, including; drip edge, Ice and Water Shield (or equivalent 100 mil) underlayment, snow and ice shield, roofing nails, flashing and asphalt shingles.

PART II - PRODUCTS

2.1 Materials

A. Shingles – Shingle shall be Malarky Legacy XL Scotchguard Architectural Shingle, Natural Wood color, or CO approved equal. The composite shingle shall meet UL 2218, shall be class 4 impact resistant, and 110 mph wind rating. The shingle shall have a 50 year limited warranty. Starter course and ridge cap shingles to match.

B. Underlayment, valley and eave flashing, rake edges and chimmey and vent – underlayment shall be Jiffy Seal Ice and Water Guard, or Grace Ice and Water Shield, 100 mils thickness, or equal. Install per manufacturer’s specifications.

i. Install double layer over lower porch roof and 4’ up main roof.

C. Flashing - 24 gauge step and counter flashing for chimney and vent pipe extrusions and valleys.

D. Nails - Hot dipped galvanized roofing or electro-galvanized roofing nailer nails. Staples are not acceptable and will be rejected.

E. Drip edge - Aluminum, 24 guage, D-style, color to match trim.

2.2 Submittals

A. Contractor shall submit to COR:

a. Shingle style and color choices

b. Flashing and trim color choices

c. Installation Guides for all approved product

d. Roofing Sealants and Nails

e. Ice & Water Shield

f. Spec sheets for all products to be used

g. All submittals must be approved by CO prior to purchase of material.

PART III - EXECUTION

3.1 Execution of the Work

A. Contractor will remove sections of existing roof material down to existing wood and cover to protect from weather each working day.

a. Protection from elements, tear off only what can be weather proofed in one day or tarp roof.

B. Shrubbery and inprovements adjacent to the building shall be protected during the contractors operations. Any damage to the building or grounds will be repaired by the contractor at the contractors expense.

C. Material removed from the roof shall be legally disposed of by the contractor. At the completion of work the contractor will perform a final site cleanup. Contractor shall use a magnet around entire work site to ensure all nails are removed from around building area.

D. Contractor shall inform the COR of any sheathing areas needing repair as they are uncovered as well as any vent covers that may need to be replaced/repaired.

E. Ice and water shield will be laid directly on the sheathing and over top of metal drip edge along entire length of eave.

a. Apply over entire roof, with double layer over lower porch roof extending 4’ up the main house roof above porch.

b. 62” wide in valley over top of metal flashing with 12” overlap of ice guard in valley.

F. Chimneys, vents, and protrusions shall be flashed with new flashings.

E. Shingles will be attached to flashings with plastic cement.

G. Shingles shall be installed in accordance with the manufacturers specifications.

H. Shingle courses shall be laid straight and checked with string lines during installation.

Use recommended number of fasteners per shingle and place fasteners according to the shingle manufacturers specifications. Apply the shingles across and diagonally up the roof.

I. Metal valley flashing shall be installed in one continuous piece per valley and shall be secured without puncturing by placing roofing nails every 12” along both edges such that the nail shanks are immediately adjacent to the metal edge and the nail head holds the flashing.

J. Follow manufacture’s recommendation for valleys to be constructed. No fastener should be within 6” of the valley centerline, the first course will extend at least 12” onto adjoining roof, and each cut shingle will be embedded in a 3” strip of plastic cement.

K. The underlayment shall be laid out horizontally (parellel) to the eave with the appropriate side up, and with the 4” horizontal laps and 6” vertical laps or per manufacturer’s instructions.

L. Each shingle shall be securely nailed with minimum six (6) roofing rails or as recommended by the manufacturer for maximum wind rating.

M. The shingles shall be laid out with the ends barely touching each other and a snapped chalk line to ensure shingles are laid out in a parellel fashion or as recommended by the manufacturer.

N. All shingles shall be laid out with a 5 5/8” exposure unless otherwise recommended by the manufacturer.

3.2 Payment

A. Payment shall be as shown on the schedule of items.