Attachment 4 - Specifications Star Meadow Barn.pdf

GAOA Star Meadow Barn Foundation Flathead National Forest

1240LU26Q0021

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

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 measured 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)

END OF SECTION 01025

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)

END OF SECTION 01400

SECTION 013300

SUBMITTAL PROCEDURES

PART 1 – GENERAL

1.01 PROCEDURES FOR SUBMITTALS

A. Reviewing, Certifying, Approving Authority: Contractor shall be responsible for reviewing and certifying that submittals are in compliance with contract requirements.

B. Scheduling: Allow review period, beginning with receipt by approving authority that includes at least 10 working days for submittals for contracting officer approval. Period of review for submittals with contracting officer approval begins when Government receives submittal from contractor. Period of review for each resubmittal is the same as for initial submittal.

C. Variations: Variations from contract requirements require Government approval pursuant to contract

Clause entitled “FAR 52.236-21, Specifications and Drawings for Construction” and will be considered where advantages to government.

D. Submittal Schedule:

SECTION DESCRIPTION SUBMITTED APPROVED

Section C Safety Plan

Excavation Plan

Foundation Installation Plan

Concrete Mix Design

Work Schedule

END OF SECTION 013300

SECTION 02111

SELECTIVE DEMOLITION

REMOVAL OF STRUCTURES AND OBSTRUCTIONS

PART 1 – GENERAL

4.1 SUMMARY

This Section includes demolition, removal, and disposal, and of existing concrete foundation and septic field tiles to the extent shown on the drawings.

PART 2 – PRODUCTS

NOT APPLICABLE

PART 3 – EXECUTION

3.1 SELECTIVE DEMOLITION

A. The Contractor shall submit a schedule of selective demolition plans. The plan shall indicate detailed sequence of selective demolition and removal work, with starting and ending dates for each activity, and interruptions of access or services.

B. Topsoil striping and storage shall comply with the drawings and specifications.

C. When needed the septic tank shall be pumped prior to removal of any portion of the septic system. Pumped liquid waste or parts of the septic system shall be disposed of the same day as pumped or removed in accordance with location health requirements.

D. Backfill for removed items shall be excess material from other excavation or borrow from an approved source.

1. Backfill shall be brought up in 8-inch compacted layers.

2. Compaction shall be by mechanical tempers or steel drum roller with at least three passes over the entire surface.

3. The maximum size of rock in backfill shall be 3 inches.

4. Backfill shall be compacted and mounded 18-inches above the natural ground.

E. The backfill shall be graded to blend with the natural ground and each layer compacted to 95 percent of the optimum dry density determined by AASHTO T-99, Method C.

F. Where topsoil replacement is required, backfill and compaction shall comply with 02220, or other applicable specification. After backfill work is completed establish turf by placing & grading 4-inches of conserved topsoil, grass seed, and straw mulch to cover 100% the area of all drain field chambers. Final grading of the topsoil material is required to provide a smooth transition with adjacent natural undisturbed grade.

3.2 DISPOSAL OF DEMOLISHED MATERIALS

A. All materials not designated as salvage and required to be removed under this contract shall become the property of the Contractor. The Contractor shall remove and dispose of such items from the work site in a legal manner.

PART 4 - MEASUREMENT AND PAYMENT

4.1 MEASUREMENT AND PAYMENT

Payment will be one Lump Sum for all items demolished and disposed. Payment will include the excavation, removal and disposal of the item and backfilling of the hole.

The accepted quantities will be paid for at the contract unit price for Item shown below and in the Schedule of Items.

4.2 Payment will be made under:

Pay Item Description Pay Unit

02111 Selective Demolition Barn Foundation & Septic Tiles Lump Sum

END OF SECTION 02111

DIVISION 2 - SITE WORK

SECTION 02220

EXCAVATION AND BACKFILL FOR BUILDINGS

PART 1 - GENERAL

1.1 – Summary

Work includes the excavation, backfill, and site work required for foundation installation.

This section covers excavation for buildings and gravel-less drain field tiles. Work includes furnishing, hauling, and placing government supplied crushed aggregate, performing backfill operations, and utilization and/or disposal of earthen material, other work is site-grading, turf building, and landscaping.

1.2 - Related Sections

03304 – Cast In Place Concrete

04902 – Barn Foundation Replacement

1.3 - Material Classification

Material to be excavated is unclassified.

PART 2 - PRODUCTS

2.1 - Backfill Materials

Backfill materials shall contain no frozen or organic material.

Backfill materials shall consist of material excavated in and around the barns foundation work site. The materials shall contain no rock larger than 3 inches. Excavation work includes loading, hauling, and placing government supplied crushed aggregates from Star-Logan Quarry (NENW Section 3, T 30N, R 24W, MT PM)

2.2 - EQUIPMENT

The contractor shall supply equipment required to excavate material under the cabin necessary for removal of old foundation and installation of new foundation

PART 3 - EXECUTION

3.1 - Excavation

INFILTRATION CHAMBER REPAIR & REPLACEMENT

Excavate each drain tile with care to protect existing infrastructure of PVC pipes and infiltration zones. Trenches shall not exceed 3-foot wide in area during removal and replacement of damaged tiles.

The Contractor shall hand dig and rake the sides and bottom when excavation is within 6-inches of existing pipes, cleanouts, and other system equipment. Remove all large stones and other debris before installing replacement chambers.

The Contractor shall install replacement infiltration chambers and any additionally damaged items in strict accordance with the manufacturer’s recommended installation instructions. The sidewall areas of exposed tiles shall be backfilled with select native material free of rocks and debris over one-inch in maximum dimension and compacted to a depth of 14-inches as recommended by manufacturer.

Finish covering material shall be mounded several inches during backfill and landscaped to allow for settlement.

Backfill material shall be pushed over the infiltrating units without driving over the system until the system has a minimum of 14 inches of compacted cover or as otherwise recommended by the manufacturer.

After backfill work is completed establish turf by placing & grading 4-inches of conserved topsoil, grass seed, and straw mulch to cover 100% the area of all drain field chambers. Final grading of the topsoil material is required to provide a smooth transition with adjacent natural undisturbed grade.

EXCAVATION FOR THE BARN FOUNDATION

Excavate sub-soil for the barn in accordance with lines and levels required for construction of the work. During excavation, topsoil shall be segregated and piled separately from underlying material. All piles of excavated material shall be orderly and placed a sufficient distance from the banks of the excavation to avoid overloading, prevent slides. Any excavated materials not required or found to be unsuitable for backfill shall be utilized by leveling the site terrain near the barn. Whenever depth of excavation exceeds 5 feet the surface shall be sloped at

1.5V to 1H or the excavation shall be shored.

Work shall conform to the dimensions and elevations indicated on the drawings.

The Contractor is required to provide a written excavation plan the prevents surface water from entering the excavation and is responsible for conducting a utility locate prior to excavation.

3.2 - Backfilling for Buildings

Prior to backfilling clean trash and debris from excavation. Prepare material by adjusting the water content to permit proper compaction by either aerating the material if it is too wet, or spraying the material with water if it is too dry. Thoroughly mix each lift before compaction to assure uniform distribution of water content. Place backfill in lifts of 8 inches or less and compact with mechanical tamper. Compact each layer to within 98% of the maximum dry density of the soil. Backfill material to 6” below top of foundation and slope away from the foundation at 5% for 20’.

3.3 - Excess Material

Excess excavation of material is required to generate sufficient backfill to be used when backfilling sewer drain field area.

PART 4 - MEASUREMENT AND PAYMENT

4.1 Measurement

A. The work specified herein will be measured for payment as an item of Lump Sum assembly.

4.2 Payment

A. Payment for work of this item will be for accepted quantity at the contract unit price for the pay item designated in the SCHEDULE OF ITEMS.

Pay Item Item Description Pay Unit

02220

Excavation, Backfill, & Sewer Drain Field Tiles ................... Lump Sum

END OF SECTION 02220

SECTION 02232

AGGREGATE BASE COURSE

1.1 SUMMARY

A. The work of this section consists of furnishing and placing aggregate, and filler if required, on a prepared subgrade.

1.2 SUBMITTALS

A. If substitute materials are obtained from a commercial source, submit certification from the supplier that aggregate base course meets the requirements of this section.

1. Follow as specified in Division 2 Section “Submittals”.

2. Copies of certified weight tickets for each load of aggregate delivered to project site.

3. Submit all Material and Compaction Test results directly to Contracting Officer (CO) from testing services, with copy to Contractor.

1.3 QUALITY ASSURANCE

A. The crushed aggregate material available at the Star Logan Quarry is pre-approved for this project. Material Test and Compaction Test for substituted materials shall be the responsibility of the Contractor.

PART 2 - PRODUCTS

2.1 AGGREGATE

A. Provide clean, hard, durable fragments or particles of crushed stone, crushed slag, or crushed or natural gravel. Materials that break up due to freeze-thaw or wet-dry cycling shall not be used.

B. Coarse Aggregate: AASHTO T96-77, percentage of wear of not more than 50.

C. Fraction passing No. 40 sieve shall have a liquid limit not to exceed 25 and a plasticity index of not more than six, as determined by AASHTO T89-81 and 0-81, respectively.

D. Material, inclusive of filler, shall meet the following screen analysis requirements by weight:

SIEVE DESIGNATION

PERCENT PASSING

1-1/2 inch

1 inch 80 - 100

No. 4 35 - 75

No. 40 10 - 30

No. 200 0 - 10

PART 3 – EXECUTION

3.1 PLACING

A. If the required compacted depth of the aggregate base exceeds six inches, place course in two or more layers of approximately equal thickness. The maximum compacted thickness of any one layer will not exceed six inches.

3.2 COMPACTION

A. Compact each layer to a density of not less than 98 percent of the maximum density, as determined by

AASHTO T180-74, Method D. Test density in-place, in accordance with AASHTO T191-61, T205-

64, or other recognized method. Density tests to be performed at the rate of one test at center of the footer for each foundation wall.

3.3 SURFACE FINISHING

A. Use a smooth steel wheel roller for the final rolling of top surface base course. Water surface and evenly spread loose stones before rolling. Make minimum of three complete passes over area.

Correct soft spots developed during rolling.

B. Compacted base course surface shall be smooth and free from waves and other irregularities.

Unsatisfactory portions of base course shall be torn up, reworked, relaid, and rerolled, at no additional expense to the Government.

3.4 TOLERANCES

A. Surface: Contractor will test finished surface of the base course with a 10-foot straightedge or other device. The variation between any two contacts with the surface shall not exceed one-half inch. Any areas not complying with these tolerances shall be reworked to obtain conformity.

B. Width: Plan dimension, plus or minus 1/2-inch.

C. Thickness: Plan dimension, plus or minus one-half inch.

3.5 MAINTENANCE

A. Maintain base course in satisfactory condition until surfaced or until final acceptance.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

The work specified herein will not be measured for payment.

4.2 - Payment

This work is incidental to other items in this contract and direct separate item payment will not be made.

END OF SECTION 02232

SECTION 02826

SPLIT RAIL WOODEN FENCE

PART 1 - GENERAL

1.1 SUMMARY

A. The Section includes removal and reinstallation construction of a split rail in accordance with these specifications at the location as shown on the drawings.

1.2 MEASUREMENT AND PAYMENT

A. The work specified herein will not be measured for payment.

B. This work is incidental to other items in this contract and direct separate item payment will not be made.

PART 2 - PRODUCTS

2.1 POST AND SPLIT RAIL FENCE

A. Posts: Replace all posts which are damaged or found to be unusable with sound, peeled, treated, Lodgepole Pine, free from rot, disease, or insects. Posts shall have a 6-inch minimum diameter. Set in the ground, with at least 3 feet of the post treated with a wood preservative to protect it from insects & decay.

B. Poles: Replace all rails section damaged or found to be unsuitable for reuse. Split rails shall be sound

Lodgepole Pine, Dougles Fir, or Larch free from rot, disease, or insects. Rails shall have a 3 inch end and be of length to span posts.

2.2 WOOD PRESERVATIVE TREATMENT

A. Acceptable Method of Treatment Are:

1. Pressure treating in accordance with the American Wood Preservers Association (AWPA) standards utilizing either copper napthenate or pentachlorophenol in petroleum oil, conforming to

AWPA P8 and C1 for oil-borne preservatives.

2. Pressure treating with chromated copper arsenate (CCA) in accordance with AWPA P5. Retention shall be at least 0.40 pounds per cubic foot.

PART 3 - EXECUTION

3.1 REMOVAL AND REPLACEMENT

A. Remove and replace only those section required to perform the excavation and backfill shown.

3.2 POST SETTING

A. Post holes shall be not larger than 18-inch diameter and not less than 36 inches deep. Posts shall be mechanically driven or backfilled and hand tamped around the posts so as to make the post solid and plumb.

3.3 CLEAN-UP

A. When the fence has been installed, the general area shall be cleaned up to present a finished appearance.

All debris and material not utilized shall be removed.

END OF SECTION 02710

SECTION 32 3000 - CONCRETE

CAST-IN-PLACE CONCRETE (SITE) - 03304

1.1 SUMMARY

A. This Section specifies cast-in place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes.

B. Drawings and general provisions of the Contract, including General and Forest Service Supplementary

Specifications (FSSS), apply to this Section.

C. Foundations are shallow spread and strip footings as shown on the Drawings.

D. Reinforce concrete as shown and in accordance with ACI 301, SPECIFICATION FOR STRUCTURAL CONCRETE, and ACI 117, SPECIFICATION FOR TOLERANCES FOR CONCRETE

CONSTRUCTION AND MATERIALS, unless noted otherwise.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Cement Material: Use the following cementitious materials, of the same type, brand, and source, throughout project:

1. Portland Cement: Type I or II portland cement - ASTM C-150.

2. Average concrete strength determined by job cast lab cured cylinder to be as indicated below plus increase depending on the plant’s standard deviation as specified in ACI 318. Minimum concrete properties shall be as follows:

Function 28 Day Strength

Air/ Slump

Content

Water to

Cement Ratio

Max Aggregate

Size

Footing & Foundation

Walls

4,500 PSI 5% / 4”

+/- 1.5%

0.45 1”

B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, project conditions, weather, test results, or other circumstances warrant adjustments. Water to cement ratio not to exceed 0.45 total.

1. Indicate amounts of mixing water to be withheld for later addition at project site.

2. Slabs shall be 1.5# FIBERMESH 300-e3 reinforced concrete finished monolithic. After troweling, exterior slabs shall receive a broom finish and be scored with lines, as shown on

Drawings

3. Include substantiating test data showing compliance with ACI 318 Chapter 5.

4. Ready-Mix concrete materials shall be mixed with a minimum amount of water to produce a concrete of such consistency as will allow it to flow sluggishly into forms, around reinforcing steel and completely fill forms with the aid of thorough vibrating and tamping. The water/cement ratio shall not exceed 0.45.

C. Aggregate

1. ASTM C-33, "Specifications for Concrete Aggregate", Size Number 67, 1” max.

D. Gravel Base Material

1. Haul and place government furnished crushed base material meeting applicable requirements of

Section 02220; EXCAVATION AND BACKFILL FOR BUILDINGS, available for contractor’s loading, hauling, and use from the Star Logan Quarry shown on the Drawings (Sheet 1 Map).

2. Contractor may substitute a commercial source material equivalent to the 3/4” minus crushed gravel base.

E. Admixtures for Concretes

1. Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete.

Do not use calcium chloride or admixtures containing calcium chloride.

2. Air-Entraining Admixtures - ASTM C-260, "Specifications for Air-Entrained Admixtures for

Concrete."

3. Water-Reducing and Retarding, admixtures - ASTM C 494M requirements for classification as

Type B, Retarding, and Type D, MasterSet DELVO or MasterSet DELVO ESC admixtures (or

Equivalent).

4. Polycarboxylate Ether (PCE) Admixtures: A superplasticizer that enhances flow and reduces water requirements.

F. Water

1. Suitable for domestic consumption.

G. Reinforcing Steel

1. Steel Bar reinforcement - ASTM A615 Grade 60 shall conform to the following properties:

a. Fabricate and install reinforcing steel according to the manual of standard practice for detailing reinforced concrete structures - ACI STANDARD 315.

b. Contact lap all reinforcing bars per the typical lap splice length schedule, except as noted on the DRAWINGS.

GRADE 60 REINFORCING STEEL LAP SPLICE & DEVELOPMENT LENGTH

f’c= 4,000 PSI

BAR SIZE MISC BARS TOP BARS (Note iii) HOOK BARS

Ld LAP Ld LAP Ldh

#3 15 19 29 25 8

#4 19 25 25 33 10

#5 24 31 31 41 12 f’c= 5,000 PSI

Ld LAP Ld LAP Ldh

#3 13 17 17 22 7

#4 17 23 23 29 9

#5 22 28 28 36 11 ALL TABULATED VALUES ARE IN INCHES, FOR GRADE 60, UNCOATED REINFORCING, NORMAL WEIGHT

CONCRETE WITH CLEAR SPACING AND CLEAR COVER GREATER THAN THE BAR DIAMETER.

IT IS PERMISSIBLE TO INTERPOLATE BETWEEN CONCRETE STRENGTHS OR USE THE NEXT LOWER CONCRETE

STRENGTH.

TOP BARS ARE ANY HORIZ BAR PLACED SUCH THAT MORE THAN 12" OF FRESH CONCRETE IS CAST IN THE

MEMBER BELOW THE BAR IN ANY SINGLE POUR. HORIZ WALL BARS ARE CONSIDERED TOP BARS

LAP SPLICES ARE FOR NON-LATERAL LOAD RESISTING ELEMENTS. FOR REBAR LAPS SPLICES AT LATERAL LOAD

RESISTING ELEMENTS, REFERENCE PLANS AND ELEVATIONS.

Ld = DEVELOPMENT LENGTH IN TENSION OF DEFORMED BAR Ldh = DEVELOPMENT LENGTH IN TENSION OF DEFORMED BAR OR WIRE WITH A STANDARD.

LAP = LAP SPLICE LENGTH OF DEFORMED BAR OR DEFORMED WIRE.

c. All anchor bolts, hold downs and other required accessories shall be secured in place prior to inspection and concrete placement. Do not stab the listed items into fresh concrete after placement. Properly vibrate around install items to ensure proper consolidation of concrete.

2.2 MIXING

A. Limits on concrete proportions and mixing:

1. Minimum cement content 5.5 sacks/cubic yard

2. Maximum net water content 6 gallons/sack

3. Entrained air 3 to 6 percent

4. Slump 1 to 4.5 inches

5. Minimum mixing time 1-1/2 minutes

6. Maximum time in mixer 1-1/2 hours

a. Plant Batch at a central plant and mix enroute to the project in transit mix trucks in compliance with ASTM C-94. (ASTM C-94 Sections 3 and 17 shall not apply).

b. When a commercial supplier is used, provide the Contracting Officer with a certificate of quality of the concrete produced for each batch placed at the job site.

c. Project Batching and mixing at the project site may be allowed upon written approval of the Contracting Officer.

B. The Contractor shall submit concrete mix designs along with test data a minimum of two weeks prior to placing concrete.

C. Concrete curing shall comply with ACI 308, unless noted otherwise.

PART 3 - EXECUTION

3.1 GENERAL

A. Construct concrete footers, stem walls, columns, and all other new concrete construction at the locations shown on the plans and where directed by the Contracting Officer, meeting these specifications.

3.2 FOUNDATION PREPARATION

A. Excavate to the specified depth. Assure the concrete’s subgrade is firm and has an even compacted surface as specified. Place and compact gravel base material to a firm, even surface to the thicknesses of

6” or as shown on the drawings.

B. Field verification: confirm prior to form or concrete placement the footer location layout matches the location shown on the drawings.

3.3 FORMS

A. Furnish forms to produce the shape, lines, and dimensions shown on the plans and/or drawings and made of plywood, metal, or other approved panel materials.

B. Assure forms prevent leakage of mortar and are maintained in proper position and accurate alignment.

Thoroughly clean and oil forms with an approved form oil before placing concrete and remove forms only after the concrete has hardened sufficiently to support all loads.

3.4 REINFORCEMENT PLACEMENT

A. Accurately position, support, and secure reinforcement bars against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Support reinforcement on chairs, runners, bolsters or spacers as approved by the Contracting Officer.

B. Keep reinforcement free of dirt, oil, paint, grease, mill scale, and loose or thick rust.

3.5 CONCRETE PLACEMENT

A. Assure the subgrade is compacted and brought to specified grade before placing concrete. Dampen the subgrade immediately before placing the concrete.

B. Assure the rate of concrete placement does not exceed the rate at which placing and finishing operations can be performed in accordance with these specifications.

C. Place concrete within 1-1/2 hours after the introduction of cement to the aggregate. Retempering concrete is not permitted. Concrete shall not be mixed or placed when the daily minimum temperature is, or is expected to be less than 40 degrees F.

D. Concrete shall be vibrated to remove voids. Provide 3/4" chamfers on all exposed concrete corners. Do not drop concrete freely more than 4 feet.

E. Remove forms when the concrete is sufficiently set to prevent chipping or spalling. When forms are removed before the curing period has expired, protect the concrete edges with moist earth or spray with curing compound. Clean, oil and examine all forms for defects before using them again.

3.6 CURING CONCRETE

A. All concrete will be cured a minimum of 7 days. Curing materials shall meet the following requirements:

1. Burlap cloth made from jute or kenaf. . . . . . . . . . . . . . AASHTO M 182

2. Sheet materials for curing concrete . . . . . . . . . . . . . . . . . . . ASTM C 171

3. Membrane-forming curing compounds . . . . . . . ASTM C-309, Type 1 or 1-D

3.7 FINISHING CONCRETE

A. Apply a surface finish to all concrete slabs. Strike off the surface finish of the concrete to the proper grade for elevation and drainage, as shown on the drawings. Float the surface to bring a smooth blanket of mortar paste to the surface and cover all the coarse aggregate. Remove fins and irregularities caused by form joints.

PART 4 - MEASUREMENT & PAYMENT

MEASUREMENT

The work specified herein will be measured for payment as an item of Lump Sum assembly.

PAYMENT

Payment for work of this item will be for accepted quantity at the contract unit price for the pay item designated in the SCHEDULE OF ITEMS.

Pay Item

Item Description

Pay Unit

03304 .............................. Barn Foundation .................................................... Lump Sum

END OF SECTION 32 03304

SECTION 04902

BARN FOUNDATION REPLACEMENT

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes planning, execution, and requirement for lifting and safely supporting a historic barn structure while foundation is replaced. The work includes but is not limited to site preparation, inspection, bracing & shoring, structural support and lifting, surveillance, and maintenance of the barn building’s interim foundation.

1. Temporary foundation.

2. Removal and reconstruction of a concrete foundation.

1.2 SUBMITTALS

A. The Contractor shall provide a written plan for safely lifting and temporarily moving and supporting the barn. The submittal shall specifically outline tasks and a plan of operations which address:

1. Site preparations

2. Observations and inspections of the structure

3. Removal and replacement of the concrete foundation

4. Planned method of lifting and/or moving the structure

5. Additional transitory supports and modifications to the structure

6. Safety measures and standards to be observed and followed

7. Project schedule start and end dates, and identifying critical milestones.

B. Contractor’s plan shall explain the expected state of the building and surrounding site during interim storage and the final conditional state after attachment to the new foundation..

C. The Contractor shall provide qualification information for personnel needed and any specialized equipment or tools.

1.3 QUALITY ASSURANCE

A. Mover Qualifications.

1. The building mover shall have minimum 5 years’ experience of evaluating, moving, re-installing, and repositioning houses or building. Experience and knowledge gained of remodeling or working on historic structures is preferred. The contractor will also be required to demonstrate knowledge of techniques, and methodology required to construct building foundations.

2. The Contractor shall work with a degree of precision and attention to maintain the historic buildings structural integrity.

1.4 MEASUREMENT AND PAYMENT

A. There will be no separate measurement or payment for work in this section. Payment will be included at the unit prices of other contract items shown on the Schedule of Items for this project.

PART 2 - EXECUTION

2.1 PROTECTION

A. Protect persons, motor vehicles, and the surrounding area of the building being restored, from harm resulting from lifting, moving, and temporarily storing the building.

2.2 FOUNDATION REMOVAL AND REPLACEMENT

A. Removal: Demolish & remove the deteriorated old concrete foundation.

B. Support and protect remaining items to be salvaged such as the chimney and barn building shell. Maintain the metal roofing, flashing, reinforcement, lintels, and adjoining barn building construction in an undamaged condition.

C. Replace and removed and damage wooden elements with elements of a similar size and length

END OF SECTION 049020

SECTION 6 WOOD

CARPENTRY- 06100

PART 1 - GENERAL

1.1 - Scope

Perform all work necessary and required for the construction of the project. Such work includes, but is not necessarily limited to, the furnishing and installing of all carpentry work needed to brace, lift, support, move and temporarily store the Star Meadows Barn building.

1.2 - Related Work Specified Elsewhere

04902 - Barn Foundation Replacement

02220 – Excavation and Backfill for Buildings

03304 - Cast-In-Place Concrete

1.3 - Code and Standards

The "International Building Code", 2024 Edition, is hereby made a direct part of this specification, and all carpentry work included in this contract shall conform with the applicable requirements therein except as modified herein.

1.4 - Miscellaneous Items

Carpentry work and miscellaneous items and their related components which are to be furnished and/or installed under this Section are not necessarily individually described. Rough carpentry work and miscellaneous items not mentioned or described shall be furnished and/or installed in accordance with the intent of the project statement of work, drawings, and specifications and as required to complete the work.

PART 2 - PRODUCTS

2.1 - Materials

Lumber: Grading of lumber shall comply with the "Standard Grading and Dressing Rules" No.

15 of the West Coast Lumber Inspection Bureau. Grade shall be stamped on lumber at the mill.

(a) Posts, beams, rafters, joists, structural cribbing, and braces shall be Grade 1 & BTR D.F

(b) Plates in contact with concrete and masonry walls shall be redwood or shall be pressure treated Grade 2 & BTR D.F.

(c) All trim shall be rough-cut BTR D.F.

(d) Plywood shall be graded in accordance with Product Standard PS-1. Furnish sheets identifiable by a grade mark of a recognized grading association.

(e) The foundation shall utilize a 3 ½ x 7 ½ Glue Laminated Beams (GLB) fasten to columns with Simpson CCQ46 column caps or a suitable equal product. Glued-Laminated Beams

And Columns Shall Conform To The American Institute Of Timber Construction (AITC)

117-2020, For Visually Graded Western Species. Members Shall Be Manufactured For Wet

Condition Use And Framing Appearance. COMBINATION SYMBOL - 24F-V4 DF

Hardware: Furnish all items of hardware, required to complete the work. Bolts, nuts, and washers shall be hot-dipped galvanized, conforming to ASTM-A153.

(a) Nails: Common wire. Use galvanized nails for all exposed framing.

(b) Bolts: Standard mild steel, square or hexagonal head machine bolts with matching nuts and cut washers as indicated.

GAOA Star Meadow Barn Foundation Replacement

Specifications

(c) Screws: Standard #10-16x1" Phillips drive wafer head screws.

2.2 - Treated Timber Beams

Treated timber beams, sized as SHOWN ON THE DRAWINGS, shall be Douglas Fir treated with CCA (Cromated Copper Arsenate). The treatment shall be per AWPA Spec C15 with 0.40 lbs. per cubic foot retention. Members shall be field dried for a minimum of 15 days after treatment before assembly. Field cuts shall be treated per AWPA Spec. M4.

PART 3 - EXECUTION

3.1 - Installation

Installation of carpentry and millwork shall conform to the applicable requirements of the A.W.I.

"Architectural Woodwork Institute".

Use only hot-dipped galvanized. For securing all exterior members, face nail with common or box nails, driven flush. Where other anchorage details are shown, use appropriate hardware.

Secure all trim with finishing nails, hot-dip galvanized or aluminum. Do not penetrate bottom of plywood in exposed areas.

No members shall be spliced unless approved by CO.

All work shall be installed as shown or to the submitted plans, plumb, level, true to line, and securely anchored. Nails shall be neatly set and all wood raised in the driving of nails removed.

Exterior corner joints shall be mitered.

Prepare all woodwork installed hereunder by cleaning and sanding as required to receive finishes.

Hammer or toolmarks or marred surfaces and edges will not be acceptable on exposed finished surfaces, and shall be the basis for rejection of such work.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

The work specified herein will not be measured for payment.

4.2 - Payment

This wood carpentry work is incidental to other items in this contract and direct separate item payment will not be made.

END OF SECTION 06100