SPECS.doc

Mogollon Baldy Lookout Repair

Solicitation No. 12837120R0010

SECTION 01010

SUMMARY OF WORK AND SPECIAL CONDITIONS

PART 1

GENERAL

1.01 SUMMARY

A. Description of Work: Work for the Mogollon Baldy Lookout Repair shall include all work necessary to pack in materials and tools for remodeling of the existing lookout tower as well as backhaul of all disposed materials and proper disposal thereof. This project will be unique due to its Wilderness location which requires an approximate pack in distance of 12 miles from Sandy Point which is the best known location to drive to and begin pack. Also, due to the Wilderness location, all work within Wilderness shall be performed with tools which are non-motorized nor electric. All work within the Wilderness will be done with primitive hand tools. Contractor shall consult COR when in doubt of which tools may or may not be used.

General scope of work for lookout tower shall include demolition, disposal and re-construction of existing walls, interior and exterior siding, painting, sealing and roof of lookout cabin as well as design and construction of a new 6’ x 6’ metal building on concrete slab. The approximate lookout cabin dimensions are 14’-4” x 14’-4”. All existing windows and doors shall be reused. Walls for demolition are below lookout windows as well as framing around windows and may require jacking of roof to keep in place during construction. Contractor should expect to bring additional materials in the event that unexpected wood or structure rot is found beyond the scope of this work. Due to the remote location, it is preferred to do additional work as it is found to be needed. However, additional work will require COR approval prior to commencement of work.

Contractor is highly encouraged to understand and inspect the true remoteness and challenges of this project due to Wilderness requirements prior to bidding. This project will pose logistical challenges as well as construction challenges due to the unique location. Due to need to not interfere with lookout duties, this project will be required to be done in a September / October timeframe as lookouts leave, but before it’s too cold. Limited cistern water is available at site for use of livestock and construction. However, tank is only about 500 gallons and not typically full. Contractor should expect to provide supplemental water as needed.

1. MOBILIZATION / DEMOBILIZATION: Contractor shall expect to procure and deliver all tools and materials to site for complete reconstruction of lookout cabin as described. Included in mobilization and demobilization will be not only delivery of all tools and materials to trail but also for packing of materials to the lookout. This also includes all food and provisions as needed for several days at site. Contractor shall expect to camp out at lookout site for several days as the trip would be too long to be done up and back in one day.

2. DEMOLITION: All four existing walls as well as the metal tin roof shall be demolished, hauled out from the Wilderness site and properly disposed of. Care shall be taken on demolition to preserve all windows, doors and other elements not intended for reconstruction. Any damage to these items shall be replaced by the contractor at contractor’s expense. It is intended that all four walls below the windows and framing around windows as well as their siding be removed and replaced with new lumber and siding. In addition, roof shall be removed and replaced. If contractor finds that other elements need to be replaced upon demolition, contractor shall notify COR as soon as possible and a change order may be issued to replace said damaged work as well. Contractor shall consult with COR and district on materials for backhaul. Some materials may be left at site for future use if requested by forest. However, all materials not to be used or requested to stay shall be hauled out and disposed of by contractor.

3. WALL RECONSTRUCTION: All interior structure of the walls is comprised of 2” x 4” lumber and some 1” x 8” . Contractor shall expose and replace all of the interior lumber under the existing windows as well as between. Any additional lumber which needs replaced beyond this shall be considered a change order. The southern and western walls have the most rot, but contractor shall replace all four walls. The above existing windows and roof may need to be jacked up in place to secure during construction. Contractor shall ensure that windows, doors and all other elements not planned for replacement shall be protected for continued use. Drawings are included with general dimensions but are bot exact. Contractor shall perform all exact measurements in the field. Drawings are intended to give a general idea of scale for the purposes of procurement. It is estimated that contractor shall procure and deliver to site the following lumber for construction:

16 – 2” x 4” x 14’-6” (for across floor and below window)

56 – 2” x 4” x 8’ (to be cut for bracing in walls as well as between windows)

12 – 1” x 8” x 8’ (window sills)

30- 1” x 1” x 8’ (to hold windows)

Contractor shall also bring all tools and fasteners for complete construction of walls.

These are rough estimates for lumber needed. Contractor shall confirm these quantities and possibly bring extra to ensure enough lumber to complete total rebuild of walls. Extra may be needed if additional work is found as well.

Upon completion, contractor shall perform all calking and sealing to ensure a weather proof tight product. Contractor shall also insulate walls with a minimum R rating of R-19.

4. EXTERIOR SIDING: Once interior framing is complete, contractor shall replace exterior siding for entire structure below windows. Siding shall be a minimum ¾” marine grade siding which is resistant to weathering and can withstand extreme winds and severe weather. Each wall has approximate dimensions of 14’-3” x 2’-9” All four walls shall have new siding placed and securely fastened. All seams shall be caulked and sealed to prevent and moisture penetration.

5. INTERIOR SIDING: Upon completion of exterior siding, framing and insulation, interior siding shall be replaced for entire interior lower half of wall. Siding shall be tongue and groove type siding, Douglas fir with a smooth medium dark walnut type finish (to be approved by COR prior to procurement). Tilton Cofferd Ceilings may be used as an example, but a COR approved equal may be approved. Completed siding shall be aesthetically complete and professionally installed per manufacturer’s recommendation.

6. ROOFING: Contractor shall replace existing metal roofing with a new metal roof. Contractor shall demolish existing tin roof and properly dispose of. Upon demolition, contractor shall inspect decking for any damage. If any damage is discovered, COR shall be notified and negotiated for repair. Once decking is inspected and sound, contractor shall replace roof with new metal roofing. Roofing shall be 26 gauge metal roof, brown in color. Completed roof shall be professionally installed and prevent all weather penetrations and withstand extreme wind.

7. PAINTING: Upon completion of all installation and sealing, all unfinished and exterior lumber and siding shall be painted. Paint shall include all primers as needed and be sky blue (to be COR approved prior to procurement) in color. Painting shall be complete, smooth and consistent in appearance and include all exterior surfaces for a uniform color. Care shall be taken to not allow paint on any surfaces not intended to be painted. In the event of paint incidentally being applied or spilled to said surfaces, complete cleaning of surface shall be performed.

8. NEW TOILET BUILDING: A new metal building shall be designed, procured and constructed onsite near the previous bathroom location near the Mogollon Baldy Lookout Tower. The building shall be constructed on a rebar meal reinforced concrete slab adequately reinforced and sized to handle wind loads, freezing and all other aspects to maintain a continuous safe structure. The shell of the building itself along with the roof shall all be metal, brown in color. Contractor shall submit design and materials for intended restroom with the bid. Bidders shall keep in mind that this location is over 10,500 feet above sea level and experiences extreme high winds and several feet of snow annually. All construction shall be done to withstand such exposures.

B. Location: This project will take place at the Mogollon Baldy Lookout site in the heart of Gila National Forest Wilderness. The nearest dirt road for access is at the location known as “Sandy Point” located approximately 21 miles east of the town of Glenwood, New Mexico. Access is about 5 miles north on state highway 180 from Glenwood then about 17.3 miles east on state road 159 to Sandy Point. From Sandy point access is via a trail which is approximately 12 miles to the lookout. Winter access is restricted due to extreme winter weather. The trail to the lookout is seasonally maintained, but commonly has obstacles such as fallen trees which must be mitigated by traveler.

1.02 REFERENCES

A. Referenced Specifications/Standards with Abbreviations and/or Acronyms: Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor from the following:

B. Construction which is not governed by a local building code or the Contract Specifications will be governed by the more stringent provisions of the latest published edition, or Statute adopted edition, of the following applicable codes:

AIT

American Institute of Timber Construction

333 W. Hampden Avenue

Englewood, CO 80110

ANSI

American National Standards Institute

1430 Broadway

New York, NY 10018

APA

American Plywood Association

P. O. Box 11700

Tacoma, WA 98411

ASHC

American Society of Hardware Consultants

7711 Old Springhouse Rd.

McLean, VA 22102-3474

ASTM

American Society of Testing and Materials

1916 Race Street

Philadelphia, PA 19103

AWI

Architectural Woodwork Institute

2310 S. Water Reed Dr.

Arlington, VA 22206

AWPA

American Wood Preservers’ Association

P. O. Box 849

Stevensville, MO 21666

CPSC

Consumer Products Safety Commission

Superintendent of Documents

Owner Printing Office

Washington, DC 20402

FGHA

Flat Glass Marketing Association

White Lakes Professional Building

3310 Harrison Street

Topeka, KS 66611

FM

Factory Mutual System

Factory Mutual Engineering and Research Corporation

P. O. Box 888

Norwood, MA 02062

FS

Federal Specifications/Standards

NBS

National Bureau of Standards

Gaithersburg, MD 20899

NFPA

National Fire Protection Association

Batterymarch Park

Quincy, MA 02269

NPCA

National Paint and Coatings Association

1500 Rhode Island Avenue, N.W.

Washington, DC 20005

NWMA

National Woodwork Manufacturing Association, Inc.

205 W. Touhy Ave.

Park Ridge, IL 60068

OSHA

Occupational Safety and Health Administrations’ Standards

U. S. Department of Labor

Denver Area Office

333 West Colfax Ave.

Denver, CO 80204

PS

Product Standard (U.S. Department of Commerce)

SDI

Steel Deck Institute

P. O. Box 3812

St. Louis, MO 63122

SIGMA

Sealed Insulating Glass Manufacturers’ Association

111 E. Wacker Dr.

Chicago, IL 60601

WCLIB

West Coast Lumber Inspection Bureau

P. O. Box 23145

Portland, OR 97225

WWPA

Western Wood Products Association

1500 Yeon Building

Portland, OR 97204

1. NOTE: Federal specifications and catalogues may be obtained at Business Service Centers of Regional Offices of the General Services Administration, Washington, DC; Boston, MA; New York, NY; Philadelphia, PA; Atlanta, GA; Chicago, IL: Kansas City, MO; Ft. Worth, TX; Denver, CO; San Francisco, CA; and Auburn, WA.

C. Referenced Codes with Abbreviations and/or Acronyms: Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced codes referred to herein may be procured by the Contractor from the following:

NFPA

Life Safety Code

National Fire Protection Association

Batterymarch Park

Quincy, MA 02269

UBC

Uniform Building Code

International Conference of Building Officials

5360 S. Workman Mill Rd.

Whittier, CA 90601

UL

Underwriters’ Laboratories, Inc.

333 Pfingston Rd.

Northbrook, IL 60062

1.03 QUALITY ASSURANCE

A. Code and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as if they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

C. Measurements: Where approved manufacturers’ diagrams and shop drawings give specific measurements or rough-in dimensions for equipment, these dimensions shall take precedence over dimensions indicated on the drawings.

1.04 DELIVERY, STORAGE, AND HANDLING

A. Delivery: The Contractor shall protect products, incorporated into the work, from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturers’ name and brand designation and contents legibly indicated. Contractor shall be responsible for all delivery including the packing in of all tools and materials via livestock from access road to tower by forest trail.

B. Storage: The Contractor shall provide temporary storage facilities for products complying with manufacturers’ recommendations that will protect them from damage until installation of the project and final acceptance. The storage area shall permit access for inspection and handling. Mogollon Baldy is subject to extreme winds and harsh weather due to it’s high location. Contractor shall take all measures to protect materials.

C. Handling: The Contractor shall load and unload products in such manner that protects them from damage until installation on the project.

1.05 PROJECT/SITE CONDITIONS

A. Access to the Work: Contractor shall coordinate with Forest and professional packer for all access to the site.

1.06 SEQUENCING AND SCHEDULING

A. Requirements: The Contractor shall be responsible for operations necessary to complete the work, including coordination with other crafts relative to the contractor’s requirements. Work shall be scheduled in such a manner as to avoid delays in overall construction and permit proper installation of work.

1.07 MISCELLANEOUS REQUIREMENTS

A. The organization of these specifications into Divisions, Sections and Articles, and the arrangement of the drawings, shall not control the Contractor in dividing the work among subcontractors or in establishing the extent of work to be performed by any trade.

B. Do not scale any drawings. Rely on printed dimensions. Drawings are approximate for bidding purposes. Contractor shall measure for exact construction dimensions.

C. Field verification of scale dimensions is required since actual locations, distances, and levels will be governed by actual field conditions.

1.08 UTILITY CONNECTIONS

A. Electrical Service: No electrical nor mechanical devices shall be used at the site for this project due to it’s sensitive Wilderness location. Any work done prior to packing in of materials shall be done at contractors expense.

B. Water Service: Water will need to be packed in for the project. There is no water source accessible at this site.

1.09 CONSTRUCTION SCHEDULE:

A. At initial pre-work meeting, contractor shall provide to COR a general schedule of expected major milestones such as procurement dates, mobilization to site, begin of construction, project completion and other major events. As the Work progresses, the Contractor shall update COR on progress and notify COR of any changes to schedule.

B. If, in the opinion of the COR, the work accomplished falls behind that schedule, the Contractor shall take such action as necessary to improve his progress. In addition, the COR may require the Contractor to submit a revised schedule demonstrating his program and proposed plan to make up lag in scheduled progress and to insure completion of work within the contract time. If the COR finds the proposed plan not acceptable, he may require the Contractor to submit a new plan. If a satisfactory plan is not agreed upon, the COR may require the Contractor to increase the work force, the construction plan and equipment, or the number of work shifts, without additional cost to the Forest.

C. Failure of the Contractor to comply with these requirements shall be considered grounds for determination by the COR that the Contractor is failing to prosecute the work with such diligence as will insure its completion within the time specified.

1.010 SITE INFORMATION

A. Bidders should acquaint themselves with all existing conditions. Prior to bidding, bidders may make their own investigations to satisfy themselves as to site location and existing conditions and logistical challenges, but all such investigations shall be performed only under time schedules and arrangements approved in advance by the COR.

B. Adjust all work performance that does not meet technical or design requirements, but make no deviations from Contract Documents without specific and written approval of the COR.

1.011 TESTS

A. No specific testing is required for this contract, but contractor shall apply all products to manufacturer’s recommendations or to a professional quality installation.

1.012 CUTTING AND PATCHING: In addition to the requirements of the General Conditions, Contractor shall perform all cutting and patching required to remove and replace work not conforming to the requirements of the Contract Documents, to uncover ill-timed work for inspection, to replace defective work, to make parts fit properly, etc., and shall:

A. Perform all cutting and patching in strict accordance with pertinent requirements of these Specifications and, in the event no such requirements are determined, in conformance with the COR’s direction.

B. Prior to cutting which affects structural safety, submit written request to the COR for permission to proceed with cutting.

C. Prior to cutting and patching performed pursuant to the COR’s instructions, submit cost estimate to the COR. Secure the CO’s approval of cost estimates and type of cost reimbursement before proceeding with cutting and patching.

D. Submit written notice to the COR designating time the work will be uncovered, to provide for the COR’s observation.

E. Perform all other cutting and patching needed to comply with the Contract Documents at no additional cost to the Forest. (The Forest will reimburse the contractor for cutting and patching performed pursuant to the COR’s written request after claim for such reimbursement is submitted by the Contractor.)

1.013 RECORD DRAWINGS: In accordance with the requirements of the General Conditions, the COR will provide the contractor with a set of reproducible drawings to the original bidding documents, as required and at contractor’s expense, as follows:

A. If the Contractor elects to vary from the Contract Documents, and secures prior approval of the COR, for any phase of the work other than those listed below, he shall record in a neat readable manner all such variances on the reproducible drawings furnished.

B. The following requirements apply to all Record Drawings.

1. They shall be maintained at the Contractor’s expense.

2. All such drawings shall be done carefully and neatly by a competent draftsman and inform approved by the COR.

3. Additional drawings shall be provided as necessary for clarification.

4. They shall be kept up-to-date during the entire course of the work and shall be available on request for examination by the COR and, when necessary, to establish clearances for other parts of the work.

5. The Record Drawings shall be returned to the COR on completion of the work and are subject to the approval of the COR.

1.14 WARRENTIES: All warranties for products used on job shall be transferred to COR upon completion of project.

1.015 TEMPORARY CONSTRUCTION AND SERVICES: The Contractor shall provide the following specific items of temporary construction and services:

A. Temporary Water:

1. Water required in the performance of the Contract shall be packed in and provided by the contractor. No water is available at site.

B. Electric / Mechanical Service:

1. Due to Wilderness restrictions, no electric or mechanical serviced will be provided nor shall they be used to maintain compliance with Wilderness standards unless work is done outside Wilderness boundary. All work onsite shall be done with primitive type hand tools.

C. No toilet facilities are provided and contractor shall plan to use Wilderness type tactics for restroom needs.

D. Temporary Closures: Contractor shall erect temporary closures over openings when weather conditions render such action necessary for proper installation of any portion of the work.

E. Protection of Work in Place: Work in place that is subject to injury because of operations carried on adjacent thereto shall be covered, boarded up or substantially enclosed with adequate protection. Permanent openings used as thoroughfares for the introduction of work and materials to the structure shall have heads, jambs and sills well blocked and boarded. All forms of protection shall be constructed in such manner that on completion the entire work will be delivered to Forest in unblemished condition.

F. Temporary Fire Protection: Contractor shall provide and maintain fire extinguishers, fire hoses and other equipment necessary for fire protection during construction. Such equipment shall be used for fire protection only.

G. Signs: No signs will be permitted on the Project except the project sign, identifying captions over offices, certain directional and warning signs required for safety and protection. Contractor shall take all necessary steps to prevent installation of any unauthorized signs, and, should any appear, cause them to be removed immediately, and repair and repaint any damage caused thereby without additional cost to the Forest.

H. Scaffolds and Runways: Contractor shall furnish, erect and maintain for duration of the Work as required, all scaffolds, runways, guard rails, platforms and similar temporary construction as may be necessary for performance of the Contract. Such facilities shall be of type and arrangement as required for their specific use; shall be substantially constructed throughout, strongly supported, well secured, and shall comply with all applicable rules and regulations of applicable State and local codes.

I. Temporary Buildings: All temporary buildings shall be maintained in a neat orderly appearance for the duration of the Work.

J. Removal of Temporary Construction: Temporary office facilities, toilets, storage sheds, and other construction of a temporary nature shall be removed from the site as soon as the progress of the Work will permit; and the portions of the site occupied by the same shall be properly restored.

1.016 CLEANING UP: In addition to other provisions of the Specifications, the following shall be required:

A. Besides the “removal of waste materials,” the following special cleaning shall be required just prior to acceptance.

1. Remove stains, wash and polish glass inside and outside. This work shall be done by persons skilled and equipped for such work.

2. Remove foreign matter, marks, stains, foreign paint, fingerprints, soil and dirt from (and have in a polished condition where applicable) the following:

a. Painted, decorated and stained Work.

b. All hardware, fixtures and incorporated equipment.

c. All finished surfaces and metal surfaces, whether interior or exterior.

d. All doors and windows.

3. Use only the cleaning materials and equipment, which are compatible with the surface being cleaned, as recommended by the manufacturer of the material or as approved by the COR.

1.017 EXAMINATION OF SITE

A. Bidders may visit the site, compare the drawings and specifications with any work in place, and inform themselves of all conditions, including other work, if any, being performed. Due to remote nature of project, contractors are encouraged to ask questions and research to familiarize themselves with the requirements of this project.

B. Information respecting the site of the work given in drawings or specification is believed to be reasonably correct, but the Forest does not warrant either the completeness of accuracy of such information, and it is the responsibility of the contractor to verify all such information independently and to make such other examination of the conditions to be encountered during construction.

C. The Contractor acknowledges that he has investigated and satisfied himself as to the conditions affecting the work, including, but not restricted to, those bearing upon transportation, disposal, handling and storage of materials, availability of labor, water, electric power, roads and uncertainties and conditions of the ground, the character of equipment and facilities needed preliminary to and during prosecution of the work. The Contractor further acknowledges that he has satisfied himself to the character, quality, and quantity of surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the sites. Any failure by the Contractor to acquaint himself with the available information will not relieve him from responsibility for estimating properly the difficulty or cost of successfully performing the work. The Forest assumes no responsibility for any conclusions or interpretations made by the Contractor on the basis of the information made available by the COR.

PART 2

PRODUCTS

2.01 GENERAL

A. (See specific section for applicable requirements).

PART 3

EXECUTION

3.01 PREPARATION

A. Any existing structures or items outside of scope of work disturbed or removed during construction shall be reset by the Contractor at the Contractor’s expense.

3.02 PROTECTION

A. Damage: Repair of damage to new construction and equipment or existing utilities resulting from construction procedures, shall not be initiated prior to notification of the COR.

B. Right-of-Way: Existing utility lines shall have the right-of-way over all other lines, and all lines encountered by the Contractor shall be carefully maintained in proper alignment. Should the Contractor find that the grades of new utility lines intersect existing utility lines, he shall stop the laying of the new lines until new grades are established.

C. Repairs: The Contractor shall repair damages to any new or existing active utility above or below ground, whether indicated on the drawings or not, and immediately report such damage to the COR. All costs of repair for damages due to the Contractor’s negligence will be paid by the Contractor.

END OF SECTION

SECTION 02040

DEMOLITION

PART 1

GENERAL

1.01

DESCRIPTION

A. Remove existing work, materials and items as indicated on the drawings, as required by job site conditions, as scheduled, and as specified herein, to accomplish new work and alteration in the existing buildings. Cut pockets, openings, chases, depressions, etc, to install or allow for installation of materials or equipment.

B. All four existing walls as well as the metal tin roof shall be demolished, hauled out from the Wilderness site and properly disposed of. Care shall be taken on demolition to preserve all windows, doors and other elements not intended for reconstruction. Any damage to these items shall be replaced by the contractor at contractor’s expense. It is intended that all four walls below the windows and framing around windows as well as their siding be removed and replaced with new lumber and siding. In addition, roof shall be removed and replaced. If contractor finds that other elements need to be replaced upon demolition, contractor shall notify COR as soon as possible and a change order may be issued to replace said damaged work as well. Contractor shall consult with COR and district on materials for backhaul. Some materials may be left at site for future use if requested by forest. However, all materials not to be used or requested to stay shall be hauled out and disposed of by contractor.

C. Patch all existing surfaces that are disturbed, damaged or otherwise made defective in appearance or function by the execution of required work under this contract. Repair and resurface all disturbed areas using compatible materials to match adjacent surfaces in hardness and texture.

1.02

QUALITY ASSURANCE

A. Contractor shall coordinate construction procedures and schedule with COR, and shall comply with all applicable requirements found in the Construction Documents.

PART 2

PRODUCTS

2.01

DISPOSITION OF MATERIALS

A. Remove all materials or debris resulting from demolition operation from the site promptly. No accumulation of debris will be permitted.

B. Do not burn wood and inflammable debris resulting from demolition operations on the site.

C. Some materials may be requested to be left at site, contractor shall be carefully removed and place these as directed onsite without damage in Forest’s storage facility.

PART 3

EXECUTION

3.01

PREPARATION

A. Plan all work in advance, informing COR of procedure and schedule.

3.02

INSTALLATION

A. Protect existing buildings and adjacent surfaces, features, and property. Restore to original condition all work damaged or otherwise made defective in appearance or function by the execution of required work under this contract. Interference with Forest’s use of existing buildings and facilities shall be kept to a minimum and all work resulting in such interference shall be performed at a time approved beforehand by the COR.

B. Remove all work carefully and only to the extent required for the final work. Remove all loose or damaged materials, caused by demolition, noted or specified to be removed.

C. Where openings are to be cut in existing structures; cut such openings with care. Where materials, equipment, frames, etc., are to be removed, remove such items with care to minimize damage to adjacent materials. Structural shoring and/or bracing may be necessary for safety reasons and to prevent structural collapse.

D. After the demolition work in any area is completed, clean the area before any new construction is started.

E. Walls and structural elements to be removed may consist of concrete masonry units, plaster, concrete, metal, wood, or other materials. All repairs shall be made with materials to match adjacent.

F. Drawings are schematic only, Field-verify for estimating and construction purposes.

3.03

PROTECTION

A. Take reasonable and adequate precautions to protect the Forest’s property from damage during demolition work, moving of debris, and damage by the elements. Restore any damage to Forest property due to the aforesaid work or replace in a manner satisfactory to the COR.

B. Provide and maintain suitable barricades, shelters, lights, and danger signals during the progress of the work, especially if worksite must be left at some intermediate point of construction. They shall meet the requirements of the applicable building codes, safety codes & regulations. Assume the responsibility of barriers to completion of contract and remove same.

END OF SECTION

SECTION 02515

SITEWORK CONCRETE

PART 1

GENERAL

1.01

SUMMARY

A. Work under this Section includes furnishing, placing, and finishing cast-in-place concrete and accessories for sitework concrete as required for a 6’ by 6’ slab to be poured for a base to the new metal toilet building.

B. Related Sections:

1. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions and Supplementary Conditions.

1.02

REFERENCES

A. Follow specifications of the American Concrete Institute (ACI)

1. ACI 304 “Recommended Practice for Measuring, Mixing and placing Concrete”

2. ACI 306 “Recommended Practice for Cold Weather Concreting”

3. ACI 301 “Specifications for Structural Concrete for Buildings”

1.03

SUBMITTALS

A. None required.

1.04

PROJECT/SITE CONDITIONS

A. Check grades and compaction before starting work. Correct discrepancies or deficiencies in structural fill prior to placement of forms. Ensure a good base and grade prior to pour concrete.

PART 2

PRODUCTS

2.01

MATERIALS

A. Cast-in-place concrete in accordance with provisions of Section 03300 of these Specifications. Concrete 28-day strength to be a minimum of 3000 psi.

B. Reinforcement in accordance with Section 03200 of these Specifications.

C. Air entrainment, ASTM C 260.

PART 3

EXECUTION

3.01

INSTALLATION

A. Forms clean, straight and true, braced to prevent deformation.

B. Ready mix bags of high strength concrete shall be used.

C. Do not remove forms by prying on green concrete.

3.02

ADMIXTURES

A. Admixtures used only on written approval of COR.

B. Admixtures used in strict accordance with manufacturer’s written instruction.

C. No surface retarders to be used.

D. Air entrainment admixture to produce consistent mixes and a max. of 4 per cent air content.

3.03

FIELD QUALITY CONTROL

A. No testing required unless there are discrepancies between COR and contractor in which testing may be required for proof of adequacy.

3.04

FINISHING

A. General

1. Work includes slabs, curbs, and sidewalks as required by drawings.

2. Finish to true, even lines and leave surfaces free from defects.

3. Compact slab material with floats or tampers to settle large aggregate.

a. Finish with steel trowel.

b. Broom lightly with a soft bristled broom to achieve a rough finish.

4. Metal frames. Finish concrete flush.

5. Joints, edges. Finish with jointing and edging tools to true lines.

B. Screed Finish

1. Screed and consolidate slab with a straight board or other hand screeded tool which is straight.

2. Remove screeds and fill voids with concrete.

C. Float Finish

1. Screed Finish, then:

2. Commence floating when concrete is still green, but sufficiently hardened to bear finisher’s weight without deep imprint.

3. Wood float to true even textured surface applying sufficient pressure to cover all coarse aggregate and bring moisture to the surface.

4. A magnesium trowel may also be used.

D. Single Trowel Finish:

1. Float Finish, then:

2. After surface moisture has disappeared, steel trowel to smooth, even, impervious finish, free from trowel marks.

E. Broomed Finish:

1. Float finish.

2. After surface moisture has disappeared, steel trowel to smooth, even, impervious finish, free from trowel marks.

3. Broom with stiff bristle broom across direction of principal traffic.

4. Provide broomed finish for all exterior concrete work unless noted otherwise on the drawings.

3.05

CURING

A. General

1. Protect all concrete from loss of moisture, temperature changes, mechanical injury, or injury from rain or flowing water for 7 days following placing (3 days for Type III cement).

2. Maintain moist condition throughout curing period.

3. Commence curing as soon as finishing is complete and moisture has disappeared from surface.

4. No traffic on finished slabs for 48-hours after pouring. Use planks or runways for hauling over slabs during curing period.

B. Curing. Unless specific methods are specified otherwise, any of the following curing methods may be used:

1. Curing Compound. Apply per manufacturers’ written instructions.

2. Impervious Sheet Curing. Thoroughly wet surfaces with a fine water spray. Completely cover surfaces with waterproof plastic. Lap all edges 4-inches or more and seal with adhesive or tape. Weight to prevent displacement. Repair or replace when damaged.

3.06

FIELD QUALITY CONTROL

A. Inspection

1. Defaced and/or cracked concrete will be rejected.

3.07

CLEANING

A. Remove spilled concrete prior to its final set from all surfaces including reinforcing steel to be embedded in a future pour.

B. Remove all forms and materials and leave project site clear of all debris.

END OF SECTION

SECTION 03100

CONCRETE FORMWORK

PART 1

GENERAL

1.01

SUMMARY

A. Work includes: Provide formwork in accordance with the provisions of this Section for all cast-in-place concrete as required to pour the 6’ x 6’ slab for the new metal building toilet.

B. Related Sections:

1. Section 03200 - Concrete Reinforcement

2. Section 03300 - Cast-In-Place Concrete

C. Verify locations and sizes of inserts, penetrations, sleeves and other items required to be built into concrete.

1.02

REFERENCES

A. “Recommended Practices for Concrete Formwork.” ACI 347: American Concrete Institute, (ACI).

1.03

QUALITY ASSURANCE

A. Plywood grades shall conform to APA standards.

B. Design of formwork is the Contractor’s responsibility.

PART 2

PRODUCTS

2.01

MATERIALS

A. Form surfaces may be of any material providing required structural strength and surface properties to produce specified finish unless otherwise specified below or indicated on the plans.

B. Forms may be new or reconditioned with true shapes, sizes and flat plane surfaces, capable of being held rigidly in line, by the ties or hardware.

2.02

TIES

A. Concealed locations: Where concrete is to be concealed with subsequent work: Snap ties with ½-inch minimum breakback.

B. Exposed locations: Where concrete is to remain exposed on exterior or interior spaces: Cone type snap ties with cone about 1-inch diameter and 1 to 1-1/2 inches deep.

C. Areas to receive Waterproofing or Dampproofing: Cone type snap ties as above.

2.03

MISCELLANEOUS

A. Form Release Agent: Chemical agent guaranteed by manufacturer to be non-staining and not to impair bond of paint or other finish to be applied to exposed concrete surfaces.

B. Chamfer Strip:

1. Wood: Clear with planed 45-degree bevel, no defects on bevel surface.

2. Plastic or rubber: Manufacturer’s standard.

3. Wood chamfer strips may be used not more than 2 times.

PART 3

EXECUTION

3.01

DESIGN AND CONSTRUCTION

A. The sole responsibility for form design and fabrication is the responsibility of the Contractor. Any structural damage due to form failure is the responsibility of the Contractor.

B. Design forms and false-work to include appropriate values of live load, dead load, weight of moving equipment operated on formwork, concrete mix, height of concrete drop, vibratory forces, ambient temperature changes, foundation pressures, stresses, lateral stability, and other factors pertinent to safety of the structure and formwork during construction.

C. Form Ties: Locate in level and plumb rows, uniformly spaced, in symmetrical arrangement with openings and joints.

D. Chamfers: Where concrete surface will be exposed to view after completion of the project formwork shall incorporate chamfers for piers and columns. All exposed corners shall have an approximate ¾ inch chamfer.

E. Form Release Agent: Apply before placing reinforcement. Insure that form release agent is not applied to reinforcement. If form release agent is applied to reinforcement remove reinforcement and replace with new reinforcement. No exceptions.

F. Anchors and Inserts: Install anchors, inserts and sleeves required to be built into concrete accurately in location and rigidly secure before placing concrete. Do not apply form release agent to anchors, inserts, or other items to remain permanently in the concrete.

G. Forms must have well matched joints and leakproof. Tape joints when required. Wood studs used in formwork design and construction shall not be placed further than 12-inches apart for exposed concrete surfaces nor 16 inches apart for non-exposed surfaces.

3.02

CLEANUP

A. Remove concrete and nails from form material to be reused. Stack forms neatly with nails removed or bent over to prevent injury. Remove all forms and form liners from concrete before backfilling.

END OF SECTION

SECTION 03200

CONCRETE REINFORCEMENT

PART 1

GENERAL

1.01

SUMMARY

A. This Section of the specifications covers the requirements for furnishing and installing reinforcing steel bars and mesh for cast-in-place concrete for the footer and slab for the 6’ x 6’ toilet building. Reinforcement shall be used to allow for load, cracking etc. Fiber reinforcement may be used as well.

B. Related Sections:

1. Section 03100 - Concrete Formwork

2. Section 03300 - Cast-In-Place Concrete

1.02

REFERENCES

A. The following publications listed below, but referred to thereafter by basic designation only, form a part of this specification to the extent indicated in the references.

1. American Concrete Institute (ACI):

a. ACI 301, Chapter 5

b. ACI 315, Details and Detailing of Concrete Reinforcement.

2. Concrete Reinforcing Steel Institute (CRSI):

a. Manual of Standard Practice (latest edition)

b. Recommended Practices for Placing Reinforcing Bars

c. Recommended Practices for Reinforcing Bar Detailing

1.03

SUBMITTALS

A.

Within 30 days after Notice to Proceed, Contractor shall submit a plan for reinforcement and concrete plan. May be in plan set and / or documented in report form.

1.04

DELIVERY, STORAGE, AND HANDLING

A. Storage: Store reinforcement off the ground at the job site in a manner to prevent damage and accumulation of dirt and rust.

PART 2

PRODUCTS

2.01

MATERIALS

A. Reinforcing bars to be ASTM A615, Grade 60, unless specified otherwise.

B. Pier ties to be ASTM A615, Grade 60.

C. Reinforcing bars detailed to be welded shall be ASTM A706.

D. Welded Wire Fabric (W.W.F.) to meet requirements of ASTM Designation A185. Provide all welded wire fabric in flat mats or fiber reinforcement.

E. Heavy wire structural mat reinforcement to meet the requirements of ASTM A82, smooth wire, designated as “W” or ASTM A-496, deformed wire, designated as “D”. The wire shall be resistance welded into mats conforming to: ASTM A-185, or A-497.

F. Tie Wire: Steel, black concealed, 16-gauge minimum.

G. Reinforcing bar supports.

1. Per CRSI Manual of Standard Practice, Chapter 3, Class 3 - no protection, with earth-bearing bases for reinforcing or W.W.F. in slabs on grade.

H. Rocks or concrete block fragments shall not be used for reinforcing chairs. No exceptions. Slabs on grade shall have reinforcement supported by earth-bearing bases as required above.

I. Dowels to be reinforcing bars, ASTM A615, Grade 60.

J. Dowels for expansion joints for walls and/or slabs on grade to be ASTM A615, Grade 60. The dowels shall have all deformations and manufacturers deformation shall be greased and wrapped to prevent bond to the concrete to the dowel. Unless noted on the plans space dowels at 12” o.c. maximum.

2.02

FABRICATION

A. Fabricate steel as shown or indicated by drawings and as required to carry out the intent of the drawings meeting standard detailing practices.

PART 3

EXECUTION

3.01

INSTALLATION

A. Follow ACI Code 301, Chapter 5; ACI 315, “Manual of Standard Practice for Detailing Reinforced Concrete Structures”; Uniform Building Code, “Recommended Practices for Placing Reinforcing Bars” and “Reinforcing Bar Detailing” by CRSI.

B. Add corner bars, tie and lap details, and similar standard features as required by codes and pamphlets listed under REFERENCES.

C. Anchor reinforcement and dowels to prevent displacement during concrete placing operations.

D. Steel reinforcing bars shall not be spliced at points of maximum stress.

E. Minimum lap splices shall be Class A splices with no more than one half of the required horizontal bars lap spliced within the required lap length, unless indicated otherwise on the plans.

F. Tie reinforcing securely at all intersections. Point wire tie ends away from forms. No exceptions.

G. Concrete coverage over steel to be as shown on plans or as required by UBC.

H. Bending of steel shall not be permitted once it has been partially embedded in concrete except in accordance with ACI. Heating shall be performed using proper heating and cooling techniques as required by ACI. Temperature indicating crayons shall be used to control temperatures.

I. Steel shall be thoroughly cleaned of rust, mill scale, or coating that will reduce or destroy bond.

J. Welding shall not be permitted on any reinforcing bar unless the mill certificate states that it is a weldable grade of steel, and the steel manufacturer’s welding procedures are followed. Welding shall be sufficient to develop 125% of the yield strength of the reinforcing bar. Welding procedure shall be as prescribed by AWS D1.4-79 or latest edition.

K. Splices of reinforcement shall be made only as required or permitted in specifications, or as authorized by the COR. Splices shall be designed in accordance with the Uniform Building Code or as indicated on the plans. The splice shall be capable of developing 125% of the tensile capacity of the bar in tension.

L. Welded wire fabric to be located at centerline of 4” and 6” slabs on grade. Provide adequate supports for mesh. Maximum spacing of each bearing base shall not exceed 2’-0” o.c. No exceptions.

M. Lap welded wire mesh minimum one grid spacing plus two inches (2”) (8” splice for 6 x 6 mesh) to insure overlap of minimum 2 sets of parallel wires.

N. Do not bend bars in a manner injurious to the material. Bend bars cold. Do not use bars with kinks or bends not shown on the drawings.

O. Provide 2 - #5 reinforcing bars with 4’-0” long ends in floor slabs each way and diagonally at each corner of any opening with a dimension larger than 2’-0”, and at all inside corners where slabs are not square or rectangular; unless otherwise shown on the drawings.

P. Remove and replace with new reinforcement any reinforcement to which form release agent has been applied. See Section 03100.

END OF SECTION

SECTION 03300

CAST-IN-PLACE CONCRETE

PART 1

GENERAL

1.01

SUMMARY

A. Work covered in this Section includes, but is not limited to:

1. All cast-in-place concrete.

B. Related Sections:

1. Section 03100 - Concrete Formwork

2. Section 03200 - Concrete Reinforcement

1.02

REFERENCES

A. American Concrete Institute (ACI) Specifications, latest edition. Concrete work shall conform to all requirements of ACI 301 Specifications for Structural Concrete for Buildings, except as modified by the following Supplemental Requirements.

B. American Society for Testing Materials Standards and Specifications as noted in ACI 301.

1. ASTM Specifications as referenced in Paragraph 2.01 MATERIALS.

C. Concrete Reinforcing Steel Institute

1. CRSI Manual of Standard Practice. “Monolithic Reinforced Concrete.”

1.03

SUBMITTALS

A. Contractor shall submit in plans and / or narrative to explain concrete approach to COR. Design shall meet all typical building standards for high winds and extreme temperatures as required for the new toilet building.

B. Placement Notification: Notify COR 24 hours in advance of each intended concrete placement.

C. All concrete shall be ready mix type bag mixed by hand onsite.

1.04

PRODUCT HANDLING

A. Storage of Materials: ACI 304

1.05

ENVIRONMENTAL CONDITIONS

A. Cold weather: ACI 306R-78. Cold weather is defined as a period when for more than 3 consecutive days the mean daily temperatures drop below 40 degrees F (5 degrees C). When temperatures above 50 degrees F (10 degrees C.) occur during more than half of any 24 hour period, the concrete should no longer be regarded as winter concrete. Heating of concrete should not exceed 90 degrees F.

B. Inclement weather: Protect freshly placed concrete against damage by infiltration of any adverse weather.

C. Sprayed-on Protective Coatings: Apply in accordance with manufacturers written installation instructions. Do not apply when rain is forecast within 24 hours.

D. Hot Weather: ACI 305R. Work Plans shall include preparation to limit the temperature affects on concrete. As the selected limiting temperatures, usually but not always between 75 degrees F to 100 degrees F (24 degrees C) to (38 degrees C) is approached and exceeded, it is likely that the unfavorable effects of high temperature will occur. Contractor shall comply with the requirements of ACI 305R to limit the effects of temperature on the concrete.

PART 2

PRODUCTS

2.01

MATERIALS

A. Concrete, general

1. Portland Cement:

ASTM C 150

2. Aggregates

ASTM C 33

3. Water:

Potable

B. Admixtures: Admixtures shall meet or exceed the requirements indicated below. Install and use admixture products in accordance with the requirements the admixture manufacturer. Contractor shall provide certification from the admixture manufacturer that their product is compatible with other required admixtures incorporated into the mix design. Contractor shall get COR approval on all admixtures.

C. Air Entrainment: Air entrainment shall be certified by manufacturer to be compatible with other required admixtures. Admixture shall be manufactured in accordance with ASTM C 260.

D. Pozzolanic Admixtures: Pozzolanic admixtures shall be certified by manufacturer to be compatible with other required admixtures. Admixture shall be manufactured in accordance with ASTM C 494.

E. High-Range Water-Reducing Admixture (HRWR) (Superplasticizers): HRWR admixtures shall be manufactured in accordance with ASTM C 494.

F. Air Admixture: Admixture for entraining air in concrete shall be manufactured in accordance and meet the requirements of ASTM C-260.

A. Curing Materials:

1. Polyethylene Sheeting: ASTM C 171, Eight (8) mil minimum thickness. Exterior: black. Interior: white or clear.

2. Water resistant barrier paper consisting of heavy Kraft papers laminated together with glass fiber reinforcement and overcoated with black polyethylene coating on each side.

3. Liquid membrane-forming curing compound: Liquid type membrane-forming curing compound complying with ASTM C 309, Type 1, clear without dyes. Moisture loss not more than 0.055 gr./sq. cm. when applied at 200 sq. ft./gal. Do not use membrane-forming curing compound that is not compatible with adhesives or liquid or dust-on floor hardeners to be used on this project. Submit written statements from the floor hardener supplier, the adhesive supplier and the curing compound supplier that their products are compatible.

2.02

MIXES

A. Concrete Mix:

1. Strength: Strength of concrete shall be 3000-psi concrete.

2. Proportions: ASTM C33, Table 2

3. Cement: 6 sacks per c.y. minimum. Ready mix recommended due to site restrictions.

4. Maximum aggregate size to be ¾” minus for finished slabs, foundation walls, and all architectural concrete. Maximum aggregate size for footings to be 1 ½”.

2.03

ADMIXTURES

A. General

1. Admixtures may be used only on acceptance of…