b.Specifications_Rimrock_Trailhead_Sign.doc

USDA FOREST SERVICE

FP-14 STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS & BRIDGES ON FEDERAL HIGHWAY PROJECTS, FP-14 FS SUPPLEMENTAL SPECIFICATIONS (NATIONAL)

CSI SPECIFICATIONS

PROJECT NAME: RIMROCK TRAILHEAD INTERPRETIVE SIGNS

SPECIFICATION LIST

Last Revision Date

CSI SPECIFICATIONS

Preface

Preface_wo_02_23_2018

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

101 - Terms¸ Format¸ and Definitions

101.01_National_9_15_2016

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

101.03_National_4_7_2015

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations

AFPA — American Forest and Paper Association

FSAR — Forest Service Acquisition Regulations

MSHA — Mine Safety and Health Administration

NESC — National Electrical Safety Code

WCLIB — West Coast Lumber Inspection Bureau

(f) Miscellaneous unit abbreviations.

MP

milepost location ppm parts per million volume

STA

station location

101.04_National_10_23_2016

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation—(Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S. Department of Agriculture.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Utilization Standards — The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 - Bid¸ Award¸ and Execution of Contract

102.00_National_9_15_2016

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work

103.00_National_9_15_2016

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work

104.00_National_9_15_2016

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

104.06_National_9_16_2016

Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material

105.02_National_10_23_2016

Add the following to Subsection 105.02c:

105.02(c) Contractor-located sources.

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work shall be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area. The following applies to this contract:

A Forest Service weed specialist will inspect proposed sources to determine weed-free status. Provide the Contracting Officer written notification of proposed material sources 21 days prior to use. Written approval of the specific source will be provided to the contractor by the CO. If weed species are present in the proposed source, appropriate mitigation measures may allow conditional use of the source as required by the Contracting Officer.

106 - Acceptance of Work

106.01_National_7_18_2017

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is more strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive. The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work; providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

Sampling method;

Number of samples;

Sample transport;

Test procedures;

Testing laboratories;

Reporting;

Estimated time and costs; and

Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

106.02_National_10_23_2016

Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection.

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

107 - Legal Relations and Responsibility to the Public

107.02_National_10_23_2016

Add the following to Subsection 107.02:

107.02 Protection and Restoration of Property and Landscape.

<Include language to clarify or interpret permit or other requirements>.

· Clean all heavy equipment prior to entering National Forest System Lands to prevent the spread of weeds (USDA FS 2005, R6 Standard #2).

· Use only weed free sources of gravel, fill and rock that is judged to be weed free by the District or Forest weed specialists (USDA FS 2005, R6 Standard #7).

107.05_National_7_18_2017

Delete Subsection 107.05.

Delete Subsection 107.05.

108 - Prosecution and Progress

108.00_National_9_16_2016

Delete Section 108 in its entirety.

Delete Section 108.

109 - Measurement and Payment

109.00_National_9_16_2016

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

109.02_National_9_16_2016

Add the following sentence to Subsection 109.02(b):

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

155 - Schedules for Construction Contracts

155.00_National_9_14_2016

Delete Section 155 in its entirety.

Delete Section 155.

156 - Public Traffic

156.00_National_9_14_2016

Delete Section 156 in its entirety and replace with the following:

Section 156. – PUBLIC TRAFIC

Description

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project.

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Permanent Traffic Control

Traffic Signing and Marking Material

Concrete Barriers and Precast Guardwalls

Temporary plastic fence

710.11

Construction Requirements

156.03 General. Accommodate traffic according to MUTCD, approved traffic control plan and this section. Perform work in a manner that ensures safety and convenience of the public. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. Delays may not exceed N/A minutes at any one time followed by an open period of no less than N/A minutes. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

Submit traffic control plan at least 30 days prior to intended use. Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a traffic control plan has been approved.

Post construction signs and traffic control devices in conformance with MUTCD and Forest Service EM 7100-15. All required signs will be in place and approved prior to beginning work on project.

If the Contractor agrees in writing to allow public traffic to use a new road being constructed prior to completion, it will be considered an existing road for traffic control purposes.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install traffic control devices before the start of construction operations.

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

(c) Install only those traffic control devices needed for each stage or phase.

(d) Relocate temporary traffic control devices as necessary.

(e) Remove devices that no longer apply to the existing conditions.

(f) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(g) Keep temporary traffic control devices clean.

(h) Remove all temporary traffic control devices upon contract completion or when approved.

(i) When required, use flaggers certified by the American Traffic Safety Services Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retroreflective sheeting on flagger paddles. Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-1. The maximum consecutive days of closure shall be followed by a minimum number of consecutive days open to traffic as shown. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing roads during construction, give written notice to the Contracting Officer at least 10 days in advance.

Table 156-1

Temporary Road Closures

156.06 Acceptance. Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment

156.07 Do not measure Public Traffic for payment. Payment for contract work is provided indirectly. See Subsection 109.05.

171 - Weed and Disease Prevention

171.00_nat_us_03_30_2005

Description

171.01 This work consists of washing and treating construction equipment to remove seeds, plants, and plant fragments from the equipment before the equipment is used on National Forest System lands.

Material

171.02 Conform to the following Subsection:

Water

725.01

Construction Requirements

171.03 General . Notify the CO in writing at least 15 days before moving any construction equipment onto National Forest System lands. Construction equipment does not include cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas outside of National Forest System lands.

Perform all work at a location designated on the plans or other locations approved in writing. Provide the CO with an opportunity to monitor the washing and inspection.

171.04 Equipment. Use a high pressure washing system.

For work on National Forest System lands, use a washing system that traps all wash water and either stores it for removal from National Forest System lands or recycles the water for continued use. If the equipment recycles the water, provide adequate filters for seed removal. Dispose of the filter material and removed seeds in an approved manner. Do not mix soaps, detergents, or other chemicals with the wash water.

For work at a commercial washing facility, use an approved facility.

171.05 Washing. Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment.

171.06 Inspection. Inspect the washed construction equipment, including the undercarriage, to ensure that the washing removed the dirt, debris, and seeds from the construction equipment. Rewash the construction equipment as necessary or as directed.

171.07 Acceptance. Weed prevention will be evaluated under Subsection 106.02.

Measurement

171.08 Do not measure weed prevention for payment.

Payment

171.09 Include all costs associated with the Section 171-Weed Prevention in the unit price for Section 151-Mobilization.

209 - Structure Excavation and Backfill

209.10_National_7_17_2017

Delete Subsection 209.10 and replace with the following:

209.10 Compacting.

Compact the embankment using one of the following methods as specified.

(a) Compaction Method 1. Use AASHTO T 27 to determine the quantity of material retained on a No. 4 (4.75-millimeter) sieve. Compact as follows:

(1) More than 80 percent retained on a No. 4 (4.75-millimeter) sieve. Adjust the moisture content to a level suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Compact each layer of material full width with one of the following and until there is no visible evidence of further consolidation:

(a) Four roller passes of a vibratory roller having a minimum dynamic force of 40,000 pounds (180 kilonewtons) impact per vibration and a minimum frequency of 1000 vibrations per minute;

(b) Eight roller passes of a 20-ton (20-metric ton) compression-type roller; or

(c) Eight roller passes of a vibratory roller having a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration and a minimum frequency of 1000 vibrations per minute.

Increase the compactive effort for layers deeper than 12 inches (300 millimeters) as follows:

( For each additional 6 inches (150 millimeters) or fraction thereof, increase the number of roller passes in Subsection 209.10(a)(1)(a), by four passes; or

( For each additional 6 inches (150 millimeters) or fraction thereof, increase the number of roller passes in Subsection 209.10(a)(1)(b) and (c), by eight passes.

(2) 50 to 80 percent retained on a No. 4 (4.75-millimeter) sieve. Classify the material according to AASHTO M 145. Adjust the moisture content of material classified A-1 through A-5 to a moisture content suitable for compaction. Adjust the moisture content of material classified A-6 and A-7 to within 2 percent of the optimum moisture content. Use AASHTO T 99 to determine the optimum moisture content of the portion of the material passing a No. 4 (4.75-millimeter) sieve. Multiply this number by the percentage of material passing a No. 4 (4.75-millimeter) sieve, and add 2 percent to determine the optimum moisture content of the material.

Use nonvibratory rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet(1 meter) per second. Compact each layer of material full width according to Subsection 209.10(a)(1).

(3) Less than 50 percent retained on a No. 4 (4.75-millimeter) sieve. Classify the material according to AASHTO M 145. For material classified A-1 or A-2-4, determine the maximum density according to AASHTO T 99, Method C..

Adjust the moisture content of material classified A-1 through A-5 to a moisture content suitable for compaction. Adjust the moisture content of material classified A‑6 and A-7 to within 2 percent of the optimum moisture content.

Use compression-type or vibratory rollers. Compact each layer of material full width to at least 95 percent of the maximum density. Determine the in-place density and moisture content according to AASHTO T 310 or other approved test procedures. When required, use AASHTO T 224 to correct for coarse particles.

(b) Compaction Method 2. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate roller compaction equipment over the full width of each layer until there is no visible evidence of further consolidation or, if when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Ensure rollers meet the following requirements:

(1) Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds per inch (4.5 kilogram/millimeter) of width of the compression roll or rolls.

(2) Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration, specifically designed to compact the material on which it is used.

(3) Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 psi (550 Kilopascals).

(4) Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 pounds per inch (4.5 kilogram/millimeter) of width of roller drum.

(c) Compaction Method 3. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate hauling and spreading equipment uniformly over the full width of each layer until there is no visible evidence of further consolidation. Make at least three complete passes.

(d) Compaction Method 4. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate hauling and spreading equipment uniformly over the full width of each layer.

(e) Compaction Method 5. Adjust the moisture content of the material to a moisture content suitable for compaction. Compact the complete surface with a bucket of an excavator larger than 39,000 pounds (18 metric ton) Gross Vehicle Weight using a minimum of three blows. Overlap compaction by ½ width of bucket.

(f) Compaction Method 6. Adjust the moisture content of the material to a moisture content suitable for compaction. Compact using an approved mechanical tamper for a minimum of three complete passes.

When compacting with rollers or hauling and spreading equipment is not practical, use approved mechanical tampers for a minimum of three complete passes.

301 - Untreated Aggregate Courses

301.03_National_7_17_2017

Add the following to Subsection 301.03:

301.03 General.

Written approval of the roadbed is required before placing aggregate.

For pit run or grid-rolled material, furnish material smaller than the maximum size, no gradation will be required otherwise. After processing on the road, remove all oversize material from the road and dispose as directed by the CO.

Provide additives or binder, if required, at the proportions specified.

Develop and use Government furnished sources according to Section 105.

If the aggregate is produced and stockpiled before placement, handle and stockpile according to Section 314.

301.05_National_7_17_2017

Delete Subsection 301.05 and replace with the following:

301.05 Compacting.

Compact each layer full width. Roll from the sides to the center, parallel to the centerline of the road. Along curbs, headers, walls, and all places not accessible to the roller, compact the material with approved tampers or compactors.

Compact the aggregate using one of the following methods as specified:

(a) Compaction A. Operating spreading and hauling equipment over the full width of the travelway.

(b) Compaction B. Operate rollers and compact as specified in Subsection 204.11(a)(1).

(c) Compaction C. Moisten or dry the aggregate to a uniform moisture content between 5 and 7 percent based on total dry weight of the mixture. Operate rollers and compact as specified in Subsection 204.11(a)(1).

(d) Compaction D. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 99, method C or D.

(e) Compaction E. Compact to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 180, method C or D.

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

703 - Aggregate

703.05_National_10_6_2016

Delete Subsection 703.05(c)(3) and Replace with the following:

703.05 (c) Surface course aggregate. (3) Plastic Index

(3) Plastic Index, AASHTO T 90

If the percent passing the No. 200 sieve is less than 12%

2 to 9

If the percent passing the No. 200 sieve is greater than 12%

Less than 2 703.05_National_12_15_2016

Delete 703.05 and replace with the following:

703.05 Subbase, Base, Surface Course, and Screened Aggregate.

(a) Subbase or base aggregate. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:

(1) Gradation

Table 703-2

(2) Liquid limit, AASHTO T 89

25 max.

(3) Plastic limit, AASHTO T 90

Nonplastic

(4) Los Angeles abrasion, AASHTO T 96

40% max.

(5) Sodium sulfate soundness loss (5 cycles), 12% max.

AASHTO T 104

(6) Durability index (coarse), AASHTO T 210

35 min.

(7) Durability index (fine), AASHTO T 210

(8) Fractured faces, ASTM D 5821

50% min.

(9) Free from organic matter and lumps or balls of clay

Do not use material that breaks up when alternately frozen and thawed or wetted and dried.

Obtain the aggregate gradation by crushing, screening, and blending processes as necessary. Fine aggregate, material passing the No. 4 sieve, shall consist of natural or crushed sand and fine mineral particles.

(b) Surface course aggregate. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:

Table 703-3

(2) Liquid limit, AASHTO T 89

35 max.

(3) Plastic Index, AASHTO T 90

a) If the percent passing the No. 200 sieve is less than 12%

2 to 9

b) If the percent passing the No. 200 sieve is greater than 12% Less than 2

(4) Los Angeles abrasion, AASHTO T 96

40% max.

(5) Sodium sulfate soundness loss (5 cycles), 12% max.

AASHTO T 104

(6) Durability index (coarse), AASHTO T 210

(7) Durability index (fine), AASHTO T 210

(8) Fractured faces, ASTM D 5821

75% min.

(9) Free from organic matter and lumps or balls of clay

Do not use material that breaks up when alternately frozen and thawed or wetted and dried.

Do not furnish material that contains asbestos fibers.

Obtain the aggregate gradation by crushing, screening, and blending processes as necessary. Fine aggregate, material passing the No. 4 sieve, shall consist of natural or crushed sand and fine mineral particles.

(c) Screened aggregate – Furnish hard, durable particles or fragments of stone, slag, or gravel conforming the following:

Table 703-16

(2) Plastic Index, AASHTO T 90

Less than 9

(3) Los Angeles abrasion, AASHTO T 96

55% max.

(4) Free from organic matter and lumps or balls of clay.

Do not use material that breaks up when alternately frozen and thawed or wetted and dried.

Obtain the aggregate gradation by crushing, screening, and blending processes as necessary.

Delete Table 703-2 and replace with the following:

Table 703-2

Target Value Ranges for Subbase and Base Gradation

( ) The value in the parentheses is the allowable deviation (() from the target values..

D (Base)

C (Base)

4.0 –7.0 (3)

B (Subbase)

40 – 60 (8)

4.0 – 12.0 (4)

65 – 79 (6)

45 – 59 (7)

Delete Table 703-3 and replace with the following:

Table 703-3

Target Value Ranges for Surface Gradation

( ) The value in the parentheses is the allowable deviation (() from the target values.

If the plasticity index (PI) is greater than 0, the TV range for the No. 200 sieve size is 8-12 (4).

T

71 – 91 (6)

H

97 - 100

G

Add Table 703-13:

Table 703-16

Gradation Requirements for Screened Aggregate

Grading Designation

4 inch

3 inch

2 inch

No. 4

15-45

15-45

15-45

725 - Miscellaneous Material

725.01_Des_5_4_2006

725.01 Water.

725.01(c) Juvenile fish protection.

Add the following:

Any draft suction hose used by the Contractor to withdraw water from a live stream or pond located on National Forest land, shall utilize one of the following methods of screening on the inlet.

(a) Perforated Plate:

Screen openings shall not exceed 3/32 or 0.0938 inches.

(b) Profile Bar Screen:

The narrowest dimension in the screen openings shall not exceed 5/64 or 0.0781 inches in the narrowest direction.

(c) Woven Wire Screen:

Screen openings shall not exceed 3/32 or 0.0938 inches in the narrow direction.

All screens or plate shall be cleaned frequently with a wire brushing, flushing, or any other acceptable method approved by the CO.

DIVISION 2 – SITE WORK

Excavation and Backfill 02223

1. GENERAL

Description:

This section specifies excavation and backfill for masonry foundation, including excavation; furnishing, hauling and placing backfill material; disposal of excess or unsuitable backfill material; and finish grading.

Class of Material:

Material to be excavated for installation of masonry foundation is unclassified.

Approvals Required:

Notify Forest Service Representative before and after the excavation is completed. Do not place backfill until excavation is approved by the Forest Service Representative. Do not place backfill until the Forest Service Representative approves installation of foundation and masonry base.

Backfill Time Limit:

Backfill and restore surface materials within the clearing limits and excavation trenches within five (5) days after the approval to place backfill and surface restoration by the Forest Service Representative. Furnished backfill must be certified weed-free.

2. EXECUTION

The type of foundation that is being specified, as shown on drawings, will determine the required excavated depth.

Excavation:

Do not begin excavation until all clearing and grubbing work is completed except for the final debris disposal. Operation shall be in compliance with the requirements and restrictions of OSHA code, and Workman’s Compensation Board.

Excavate all trenches within the specified clearing limits (five-foot from centerline of masonry foundation). Any shifting or change must receive prior approval, in writing from the Forest Service.

Trim roots flush with trench wall.

Over Excavation:

Restore to grade any over excavation by backfilling with selected material.

Salvage of Topsoil:

Excavate top 4 inches of surface material and stockpile separately for use as topsoil backfilling material.

Rock Excavation and Blasting:

Blasting for excavation will NOT be permitted. Utilize a chipping hammer or “Hydro-Pik” for any areas requiring rock removal.

Excavated Material:

Pile excavated material at the side of the trench where it will give the best protection for work. Leave adequate space between the toe of the spoil pile and edge of the trench, to prevent material from falling into the trench.

Backfill:

Compact each lift with 3 tamper passes of a mechanical vibrating tamper over the entire layer. The number of tamper passes required may be reduced upon acceptance by the Forest Service Representative, if approved test method results demonstrate that the backfill compaction meets or exceeds the density of the natural ground adjacent to the trench. Any such testing shall be performed at the Contractor’s expense. Or, if it can be demonstrated that a given number of passes by foot traffic provides equal compaction, that will be accepted.

a. Surface Restoration: Restore all surfaces in kind. Place top soil in trench at 6 inches minimum lift and compact each lift with 3 passes of tamper.

b. Final Finish: After the foundation and masonry-base installation, and backfill has been completed, finish all disturbed areas. The trench area required to be mounded, to a smooth uniform grade texture, well blended to the original contours, showing minimum evidence of construction activity.

Disposal of Excess Excavation and Unsuitable Material:

All excess and unsuitable material from excavation will be placed onsite in an area designated by the Forest Service Representative on site.

3. MEASUREMENT AND PAYMENT

PAY ITEM DESCRIPTION MM PAY UNIT

02223 Excavation and Backfill C.Q. C.Y.

END OF SECTION

DIVISION 3 – CONCRETE

Normal Weight Concrete 03302

1. GENERAL

Description:

This section specifies cast-in-place concrete.

Quality Assurance:

Provide Forest Service Representative with a delivery ticket in accordance with ASTM C-94 for each load of concrete delivered.

2. PRODUCTS

Cement:

Type I or Type II Portland Cement – ASTM C-150. Use only one brand of cement for this project.

Type III Portland Cement – ASTM C-150. For use at the Contractor’s option under Proportioning Concrete for Cold Weather and Cold Weather Concreting.

Aggregate:

ASTM C-33, “Specification for Concrete Aggregate”. Size number 467.

Air-entraining admixtures – ASTM C-260.

Water:

Clean and suitable for domestic consumption.

Proportioning Concrete:

Minimum Cement Content

5.5 sacks/cubic yard

Maximum Net Water Content

6 gallons/sack

Entrained Air

6 to 8 percent Slump

1 to 5 inches Proportioning Concrete for Cold Weather:

For concrete place under Cold Weather Concreting and Curing condition, the Contractor may elect to alter the required proportions in one of the following ways:

a. Type II Cement:

Type III cement may be substituted in equal quantities for Type I or II cement in the above mix(es).

b. Additional Cement

An additional pack per cubic yard of Type I or II may be added.

Mixing:

a. Plant Batched and Transit Mixed:

Batch at a central plant and mix enrooted to the project in transit mix trucks in compliance with ASTM C-94.

Place concrete within a maximum of 1-1/2 hours after introduction of cement into the batch. In hot weather or due to other contributing factors, the Forest Service may require a time less than 1-1/2 hours.

Time interval between placements of batch not to exceed 30 minutes.

Mix Adjustment:

Water may be added once at the job site for adjusting slump, provided the specified water-cement ratio is not exceeded. Adding water beyond these conditions constitutes re-tempering, which will not be allowed. When water is added, an additional 20 revolutions at mixing speed is required.

Air-entraining admixtures will not be allowed to be added after the start of mixing to obtain minimum air content.

3. EXECUTION

Concrete Placement:

Notify Forest Service Representative a minimum of 24 hours prior to placement.

Immediately after placing, thoroughly compact concrete with mechanical vibrator. Hand tamping or “spudding” when permitted, will be approved in writing by the Forest Service Representative.

Finishing:

Immediately after placing and vibrating, strike off to crown. Hand finish to smooth, even surface with wood float, free of blemishes.

Curing:

Commence curing and protection of concrete immediately after placing. Cure Type Type I and II cement seven (7) days continuously and Type III cement three (3) days continuously by covering tightly with a plastic membrane against drying.

Cold Weather Concreting and Curing:

The Contractor shall consult with the Forest Service Representative for getting a written approval to proceed when temperature drops below 40 degrees F at the project site.

Tests:

All tests will be performed by and at the expense of the Forest Service. Provide concrete for the samples at no additional cost to the Forest Service. Samples will be selected on a random sample basis in accordance with ASTM C-172. If the measured slump or air content falls outside the specified limits, a check test shall be made immediately on another portion of the same load. In the event of a second failure, the concrete will be considered to have failed the requirements of the specification.

a. Slump:

Testing will be in accordance with ASTM C-143. If the slump is greater than the specified range, the concrete will be rejected.

b. Air Content:

Testing will be in accordance with ASTM C-231. If the air content exceeds the specified range, the concrete will be rejected.

4. MEASUREMENT AND PAYMENT

PAY ITEM DESCRIPTION MM PAY UNIT

03302 Sign Base Concrete A.Q. C.Y.

END OF SECTION

DIVISION – 3 CONCRETE

Non-shrink Grout 03601

1. GENERAL

summary:

This section specifies non-shrink grout.

Quality Assurance:

Use only pre-mixed grout supplied dry in waterproof containers.

2. PRODUCTS

Materials:

Grout.

a. Noncorrosive, nonmetallic, cement and aggregates. EMBECO, Fondag or approved equal.

Water.

a. Potable.

Finish Mortar.

a. 1 part Portland Cement; 2 parts concrete sand.

3. EXECUTION

Preparation:

a. Clean deleterious material from all surfaces and hardware.

b. Dampen surfaces before placing grout. Saturate equipment base foundations continuously with water 6 hours prior to grouting.

c. Dampen surfaces before placing grout.

Mixing grout:

a. Mix according to manufacturer's directions.

b. Mix entire contents of container using a paddle-type mortar mixer or hand mix in mortar box.

c. Mix grout near location of placement. Add water slowly, while mixing, to acquire proper workability and consistency.

d. Mix grout 3 to 5 minutes after adding water, and place immediately.

e. Retempering or adding Portland Cement will not be allowed.

Placing grout:

a. Do not vibrate grout. Isolate vibrations from nearby equipment or shut down until grout takes initial set.

b. Place grout rapidly and continuously.

c. Place grout from 1 side only, if expelling entrapped air.

d. Rod grout to facilitate flow.

e. Pressure grouting will be permitted.

f. Place grout within 15 minutes after mixing.

g. Do not place grout on concrete which has cured less than 7 days.

Finishing grout:

a. Cut back grout shoulders, edges, or surfaces as recommended by the manufacturer or as detailed. Finish grout with stiff finish mortar.

b. Remove forms from grouted surfaces as soon as a nonsag set or hardening has occurred.

Curing grout:

a. Cure grout promptly after placing. Provide continuous water contact for 48 hours.

4. MEASUREMENT AND PAYMENT

Payment is incidental to pay item 03302 Sign Base Concrete.

END OF SECTION

DIVISION 4 – MASONRY

Masonry Sign Base 04445

1. MASONRY BASES

GENERAL

a. This section specifies the construction of stone masonry bases. Refer to attached drawings.

b. The masonry bases must be constructed so that they substantially resist any efforts of visitors to move or tilt them.

c. Some of the masonry bases will be constructed on a slightly variable ground.

Surface of each masonry base will be flushed with the finished grade and properly meet with the concrete foundation, as shown on drawings.

ANCHORING TO FOUNDATION

a. Each masonry base will be anchored to the concrete foundation by #4 cross rebar as shown on drawings.

2. INTERPRETIVE SIGN BOARDS ATTACHMENT

GENERAL

a. This section specifies the method of placing and attaching the interpretive sign boards onto the masonry bases. Refer to the attached drawings.

b. A total of two (2) interpretive sign boards shall be installed onto each concrete base by the Contractor, as shown on drawings.

c. Approximate size, shape and location of these sign boards and shields is clearly shown in the attached drawings (please refer to drawings).

Marine Plywood sign boards shall mount flat and snug fit on masonry base (refer to attach drawings).

Clean all exposed masonry and Marine Plywood sign boards following completion of installation process. Avoid damage to the sign boards.

3. GUARANTEE

All work under this Contract shall be in accord with these specifications and is guaranteed for the period of one year from date of acceptance against failure caused by defective workmanship and/or materials.

END OF SECTION

DIVISION 4 – MASONRY

Mortar 04100

1. GENERAL

1.1

SUMMARY:

A. This section specifies mortar required for masonry work and grouting work.

1.2 PRODUCT DELIVERY AND HANDLING

A. Deliver packaged mortar materials in unopened containers bearing the manufacturer’s identification of contents. Store materials in a dry location.

B. When the descending air temperature at the sign location falls below 40 degrees F the mortaring operations must cease. Normal mortaring operations may resume when the ascending temperature exceeds 40 degrees.

C. Protect mortar work during periods of precipitation with adequate waterproof covering. Support covering so that finishing may be performed and initial set obtained without damage.

2. PRODUCTS

Cement

Masonry Cement- ASTM C-91.

Portland Cement- ASTM C-150, Type I.

Lime

Hydrated lime- ASTM C-207.

Quick lime- ASTM C-5.

Sand

ASTM C-144

Water

Clean and suitable for domestic consumption.

3. EXECUTION

Mixing

Mix in the proportions of 1 part masonry cement, ½ part hydrated lime, and 3 parts well graded masonry sand mixed thoroughly.

Mix in color additive (so that mortar is darker than facing stones) Use color additive intended for use with mortar. Final color and additive to be approved by the COR.

Mix with a mechanical mixer capable of mixing thoroughly and consistently, not less than 5 minutes.

No mortar shall be used after it has been mixed longer than two hours.

4. MEASUREMENT AND PAYMENT

Payment is incidental to pay item 097500 Stone.

END OF SECTION

DIVISION 5 – METALS

Metal Fabrications 05500

1. GENERAL

Descriptions:

This section specifies miscellaneous metal items, including materials, fabrication, and painting.

Quality Assurance:

Welding shall conform to AWS requirements.

2. PRODUCT

Metal:

Hot-dipped galvanized all metal members for this project, except the reinforcing steel. Touch up all exposed ends, cuts, and scratches area, such as welding area with specified material.

Fasteners:

Hot-dipped Galvanized or Cadium-plated.

Reinforcing Steel:

No. 3 & 4 rebar, Grade 420 [60], AASHTO M 31 or AASHTO M 322 deformed steel bar.

HSS 10.75 X 0.250, Sleeves:

42 ksi Steel Typ., ASTM A53, Type F, standard weight class, and plain ends for the designation specified in the drawings.

Aluminum Flashing:

1-inch width, Aluminum Drip Edge Flashing, Brown color, to be placed along the top of the sign boards to provide weather protection.

3. EXECUTION

Fabrication:

Sizes and locations of materials are shown on the drawings.

4. MEASUREMENT AND PAYMENT

Payment is incidental to pay items where metal materials are listed in the Estimate of Quantities remark sections in the drawings.

END OF SECTION

DIVISION 9 – FINISHES

Stone Facing 09750

1. GENERAL

1.1

SUMMARY:

Section Includes: This section specifies stone masonry to be used as fascia rock in construction of masonry walls.

1.2

RELATED SECTIONS:

04100 - Mortar 1.3

QUALITY ASSURANCE

A. Masonry work shall be performed by a licensed stone mason. Contractor shall provide listing and associated references for three projects completed by mason.

B. Product Delivery, Storage and Handling Store stone off ground to prevent contamination by mud, dust, or materials likely to cause staining or other defects. Cover materials as necessary to protect from elements. Protect anchors, ties from the elements.

C. Cold Weather Conditions: Do not place stone masonry when air temperature is below 40 degrees F. (4 degrees C). When overnight temperatures are expected to be below 32 degrees F. The work shall be covered with visqueen and standard insulation blankets.

D. Hot Weather Conditions: Protect masonry construction from direct exposure to wind and sun when erected in an ambient air temperature above 99 degrees F (37 degrees C) in the shade with relative humidity less than 50%.

2. PRODUCTS

2.1 STONE MATERIAL:

A. Stone: Veneer stone shall be similar to the appearance of the Government furnished Oregon Moss Fascia Stone.

1. Contractor shall provide a representative sample for approval prior to construction. Stone shall be provided on pallets delivered to the site. Contractor will be required to sort through the supplied pallets to pick stone with a nominal thickness of 3 inches to 5 inches. Stone will be of varying length and height.

3. EXECUTION

3.1 STONE WORK:

A. General: Do not extend vertical or horizontal lines beyond 3 stones. Place stones in its intended position without outside mechanical supports other than the backing wall. Make corners and reveals plumb and true. Always lay long regular stone horizontal never vertical. Do not use wet stones. Lay large stones in bottom courses. Fill all voids with mortar, or stone.

B. Arrange stone compactly and in such manner as to key firmly. Set top course at uniform elevation.