J.4.2_-_Sample_Task_Order_Design_Specifications.pdf

Haiti Health Infrastructure Program

Small Renovation Project

Technical Specifications

HHIP- Health Infrastructure Program

Small Renovation Projects

TABLE OF CONTENTS

DIVISION 01 – GENERAL CONDITIONS

011100 RENOVATION PROCEDURES

DIVISION 02 – EXISTING CONDITIONS

024119 SELECTIVE DEMOLITION

DIVISION 03 – CONCRETE

033000 CAST-IN-PLACE CONCRETE

033660 WATER-BASED REACTIVE STAINED CONCRETE FLOOR

DIVISION 04 – UNIT MASONRY

042200 CONCRETE UNIT MASONRY

DIVISION 05 – METALS

051200 STRUCTURAL STEEL FRAMING

055000 METAL FABRICATIONS

057000 DECORATIVE METAL

DIVISION 06 - WOOD, PLASTIC, AND COMPOSITES

060573 FIRE-RETARDANT TREATED WOOD

061000 ROUGH CARPENTRY

061600 SHEATHING

DIVISION 08– OPENINGS

081113 HOLLOW METAL DOORS AND FRAMES

081416 FLUSH WOOD DOORS

085113 ALUMINUM WINDOWS

087100 FINISH HARDWARE

088000 GLAZING

DIVISION 09 - FINISHES

092116 GYPSUM BOARD ASSEMBLIES

092400 CEMENT PLASTERING (STUCCO)

093000 TILING

095123 ACOUSTICAL TILE CEILINGS

096516 RESILIENT SHEET FLOORING

099113 PAINTING

DIVISION 10– SPECIALTIES

102113 PLASTIC TOILET COMPARTMENTS

102800 TOILET AND HOUSE-KEEPING ACCESSORIES

104413 FIRE PROTECTION CABINETS

104416 FIRE EXTINGUISHERS

DIVISION 15 – PLUMBING

151145 HANGERS AND SUPPORTS

152405 BASIC MATERIALS, METHODS AND REQUIREMENTS (PLUMBING)

152440 PLUMBING FIXTURES AND EQUIPMENT

152615 WATER UTILITY STORAGE TANKS

152991 TESTING OF PLUMBING SYSTEMS

DIVISION 16 – ELECTRICAL

160100 BASIC ELECTRICAL REQUIREMENTS

160500 BASIC ELECTRICAL MATERIAL AND METHODS

160600 GROUNDING AND BONDING

160750 ELECTRICAL IDENTIFICATION

161200 CONDUCTORS AND CABLES

161300 RACEWAYS AND BOXES

161400 WIRING DEVICES

161900 SUPPORTING DEVICES

164100 ENCLOSED SWITCHES AND CIRCUIT BREAKERS

164230 OVER CURRENT DEVICES

164240 FEEDERS AND BRANCH CIRCUITRY

164420 PANELBOARDS

DIVISION 23 - HVAC

230510 HVAC GENERAL REQUIREMENTS

230513 COMMON MOTOR REQUIREMENTS FOR HVAC

230550 IDENTIFICATION FOR HVAC PIPING

230800 COMMISSIONING OF HVAC

233100 HVAC DUCTS AND CASINGS

233410 CENTRIFUGAL HVAC FANS

233700 AIR OUTLETS AND INLETS

DIVISION 24 – THERMAL & MOISTURE PROTECTION

241105 BITUMINOUS DAMPPROOFING

244110 FORMED METAL ROOF PANELS AND ROOF DRAINAGE

246000 SHEET METAL WORK

249200 JOINT SEALANTS

-END TABLE OF CONTENTS-

SECTION 01353

RENOVATION PROCEDURES

PROJECT INFORMATION

A. Project Identification: SMALL RENOVATION PROJECT (SRP) IDIQ

B. Project Location: Haiti.

C. Owner: US Agency for International Development (USAID).

D. Construction Management Consultant (CMC): AECOM TECHNICAL SERVICES, INC.

PART 1 GENERAL CONDITIONS

1.1 RELATED DOCUMENTS

A. Refer to Division 01 for General Conditions impacting the procedures described herein.

B. Related sections include but are not limited to:

1. Section 02220—DEMOLITION

2. Omitted

3. All sections in DIVISION 09---FINISHES

1.2 SUMMARY

A. This Section addresses the Contractors’ obligation to remove in whole or in part, prepare for new work, and perform the new work on existing structures, appurtenances and other items.

1.3 SUBMITTALS

A. Within 14 calendar days of Notice to Proceed, the Contractor shall provide a

Staging and Phasing Plan that describes how the Work will be implemented with consideration of maintaining:

1. Access to all functioning facilities at all times;

2. Maintaining and protecting the privacy of patients and staff at all times;

3. Maintaining a safe environment by keeping construction activities separate from Health

Center operations, erecting barriers as appropriate to keep unauthorized personnel away from Construction activities, etc.

4. Barriers and active work areas may change over time in accordance with the phase of the

Work to manage access while completing all activities described herein.

5. Include specific start and stop times of day and days of week for p e r f o r m a n c e of

Work. Include annotated Site and Building Plans reflecting proposed areas of Staging and Phasing.

1.1 COORDINATION WITH OCCUPANTS

A. Health Center Occupancy: The Health Center shall continue to occupy the site and continue to function at the present capacity (24 hours per day, 7 days per week) during the entire construction period [with the exception of areas under construction]. The Contractor shall cooperate with the Health Ce n t e r management during construction operations to minimize conflicts and facilitate usage. The Contractor shall perform the Work so as not to interfere with day-to-day operations or extended-stay patients. The Contractor shall pay particular attention to protection of patient privacy and shall assure clear way finding utilizing appropriate barricades, pathways, signage, etc. The Contractor shall maintain existing exits unless otherwise indicated.

1. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from Construction Manager and approval of the Health Center head.

2. Maintain in operation all life safety provisions and devices (including, but not limited to, fire alarms, fire extinguishers, smoke detectors, heat sensors, emergency and exit lighting, defibrillators, and similar items).

3. Notify Construction Manager not less than 72 hours in advance of activities that will affect the Health Center’s operations.

1.2 WORK RESTRICTIONS

A. Work Restrictions, General: Comply with restrictions on construction operations.

1. Comply with limitations on use of public streets and with other requirements of authorities having jurisdiction.

2. On-Site Work Hours: CMC business hours are 8:00 a.m. to 5:00 p.m., Monday through Friday, unless otherwise indicated. Should the Contractor desire to change work hours or days, the Contractor shall submit a proposal to the COR and CMC justifying such change. At a minimum, justification shall contain a detailed discussion of potential impacts to the project schedule and cost. The COR and CMC will review the proposal and forward a recommendation to the CO who will make the final determination. If the change is accepted, the CO may issue a modification to the contract pending there is if there are additional costs or contract time incurred by USAID and/or the CMC (including but not limited to, supervision, security, and inspection).

3. For each hour of work above on-site work hours as describe above, USAID or the CMC, may be required to provide appropriate supervision, inspection, security, and administration staff. The Contractor shall reimburse USAID for costs incurred in direct support of such overtime. In response to the Contractor’s written request for acceptance of overtime work, the COR and/or CMC will notify the Contractor of the supervision cost. The Contractor shall accept the supervision cost, if it elects to proceed with the overtime work, provide a credit for such cost to USAID.

4. Weekend Hours: No restriction providing approval is requested and granted by the CMC with 72 hour advance notice.

5. Early Morning Hours: No restriction providing approval is requested and granted by the CMC 72 hours in advance.

6. Hours for Utility Shutdowns: 72 hour notice and approval by CMC required.

7. Local Holidays: The Contractor shall observe, validate, and plan the work around local national holidays as observed by the US Embassy located in Port-au-Prince, Haiti. Should any holiday fall on a weekend, the Contractor shall exercise due diligence to ensure local customs and appropriate compensation issues are addressed.

8. Should the Contract Documents conflict with local workweek customs, the Contractor shall bring to the attention of the COR and CMC in writing for resolution.

9. The Contractor shall validate local labor laws and customs which may restrict total allowable hours worked within a given week.

1.3 SPECIFICATION AND DRAWING CONVENTIONS

A. Specification Content: The Specifications use certain conventions for the style of language and the intended meaning of certain terms, words, and phrases when used in particular situations.

These conventions are as follows:

1. Imperative mood and streamlined language are generally used in the

Specifications. The words "shall," "shall be," or "shall comply with," depending on the context, are implied where a colon (:) is used within a sentence or phrase.

2. Specification requirements are to be performed by Contractor unless specifically stated otherwise.

B. Division 01 General Requirements: Requirements of Sections in Division 01 apply to the Work of all Sections in the Specifications.

C. Drawing Coordination: Requirements for materials and products identified on

Drawings are described in detail in the Specifications. One or more of the following are used on Drawings to identify materials and products:

1. Terminology: Materials and products are identified by the typical generic terms used in the individual Specifications Sections.

2. Abbreviations: Materials and products are identified by abbreviations scheduled on Drawings.

3. Keynoting: Materials and products are identified by reference keynotes referencing Specification Section numbers found in this Project Manual.

1.4 PRE-CONSTRUCTION REQUIREMENTS

A. Provide all site surveys, geotechnical testing, and all pre-design investigations, surveys and activities necessary or reasonably inferable to successfully complete the

Project.

B. Submit shop drawings and submittals for approval to the COR as required by the

Technical Specifications for each applicable development package.

1.5 CONSTRUCTION REQUIREMENTS

A. Provide all labor, supervision, materials, equipment, construction means and methods, coordination, logistics, testing, surveys and tools necessary or reasonably inferable to complete the Project.

B. Provide operations and maintenance for all new and temporary facilities until Final

Acceptance by USAID/Haiti.

C. Provide all temporary works, utilities and/or facilities necessary for the successful performance of this contract (e.g. water, power, sanitation, communications, etc.).

D. Be responsible for coordinating with local utility providers. The Contractor shall pay all costs incurred in connecting, converting, and transferring the utilities to the work.

The Contractor shall make connections, including providing backflow-preventing devices on connections to domestic water lines as necessary; providing meters; and providing transformers; and make disconnections.

E. Provide Quality Control to ensure that all work adheres to the applicable standards in the Specifications for all construction methods, materials, labor, equipment, and testing.

F. Cooperate and coordinate with the COR and CMC at all times.

G. Provide a three-hundred sixty five day day warranty period for all completed works, which shall commence at Final Acceptance by USAID/Haiti.

H. Be responsible for providing all life-support and security services required for its personnel deployed to project locations, unless otherwise stated herein.

1.6 SOURCE OF SUPPLY AND QUALITY OF SOURCE MATERIALS

A. The Contractor shall furnish only new materials and supplies for incorporation into the Work, except as specifically otherwise permitted in the Contract. All materials and supplies shall be stored in such a manner as to ensure the preservation of quality and fitness, and for efficient facilitation of inspection. Materials shall comply with the terms and conditions of the contract. Materials shall be subject to inspection by

USAID and/or its CMC at any time. The quality of all materials shall conform to requirements listed in the Technical Specifications.

B. Manufacturers test reports may supplement Contractor's inspections, sampling, testing, and certification provisions for new materials. Manufacturers’ warranties, guarantees, instruction sheets, parts lists, and other material that are furnished with certain articles or materials incorporated into the project shall be provided to the COR and CMC with each Application of Payment.

C. Materials to be installed and incorporated into the Work shall be stored in such a manner as to ensure the preservation of their quality and fitness for the Work, and to facilitate inspection.

1.7 KEY PERSONNEL

A. The performance of this contract requires the use of key personnel. All key personnel shall have fluent English language proficiency to effectively communicate at a level of technical competency with the COR and/or its CMC. All key personnel shall be located and present at the construction site on a full time basis throughout the construction period, unless otherwise pre-approved in writing by the COR. During the absence of any Key Personnel, the Contractor shall have an equal alternate present on site during any construction activities. All alternates shall be submitted to the COR for review and approval no later than seven (7) calendar days prior to use.

B. The Contractor shall consider all Key Personnel to be essential to the work performed and successful implementation of the contract. Replacement of key personnel cannot be made by the Contractor without the written consent of the CO. The listing of Key

Personnel may, with the consent of the CO, be amended during the course of the contract to add, change or delete personnel and positions as appropriate. Section F –

Deliverables and Performance, provides additional guidance regarding Key

Personnel.

C. The Contractor shall assign the following Key Personnel with 100% Level of Effort

(LOE) dedicated to this Contract. The Contractor may utilize a different organizational system if desired, providing the following key functions are clearly included and defined:

D. Construction Project Manager (CPM)

The CPM shall, at a minimum, have an engineering bachelor’s or other relevant technical degree in addition to ten (10) years of relevant engineering design, and construction program management experience in a similar development setting, or fifteen (15) years of commensurate relevant experience without a formal aforementioned technical degree. The CPM, shall at a minimum:

1. Have the authority and responsibility for the execution of the Project.

2. Act as agent of and be the single point of contact on behalf of the Contractor.

3. Have the authority to execute the requirements of the contract.

E. Construction Superintendent (CS)

The CS shall, at a minimum, have fifteen (15) years of relevant construction, project scheduling, material procurement, and field supervision experience, in a similar development setting. The CS shall have demonstrated experience in leadership roles, strategic planning, and budget management and oral and written communication skills, with French and Creole considered a benefit.

At a minimum, the CS shall:

1. Have the authority to coordinate all site construction activities.

2. Supervise all field personnel as required to successfully complete the project on schedule and within budget.

3. Ensure high quality of work and compliance to the Contractors Quality Control plan.

4. Supervise all trade and field personnel.

5. Be responsible for the construction safety practices with all on-site activities.

6. Maintain the job site office and construction site.

F. Construction Quality Control Manager (QC Manager

The QC Manager shall have a minimum of ten (10) years combined experience as a superintendent, inspector, QC Manager, project manager, and/or construction manager on similar size and type construction contract which includes the main trades of work that are part of this contract. The individual must be familiar with the requirements of the USACE EM 385-1-1 and have experience in the areas of hazard identification and safety compliance. The QC Manager shallhave successfully completed the USACE course “Construction Quality Management for Contractors”, or equivalent.

The QC Manager shall implement and manage the Construction Quality Control program and may perform the duties of Project Superintendent, on a limited, but as needed basis. The QC Manager is required to perform the duties required by the

Technical Specifications located in Section J of the Contract. The QC Manager shall:

1. Conduct the QC meetings on a weekly basis with the CPM, CS, and CMC.

2. Perform the three phases of control (USACE - 1: Preparatory Phase, 2: Initial

Phase and 3: Follow-up Phase for each Definable Feature of Work (DFOW).

3. Perform submittal review and approval prior to submission to USAID.

4. Ensure testing is performed in accordance to the Quality Control Plan.

The QC Manager is responsible for managing and coordinating the three phases of control and maintaining all Quality Control related documentation at the project site.

HEALTH AND SAFETY PLAN (HASP)

1.8 PROTECTION OF EXISTING BUILDINGS AND SERVICES

A. When working within an existing occupied building the following requirements apply:

1. The Contractor shall provide temporary enclosures for securing off of work and the maintenance of any services necessary to the proper and efficient operation of the Project.

2. The Contractor shall conduct construction operations with minimum interference to existing building operations, adjacent buildings, adjacent public or private roadways, parking lots, sidewalks and access facilities in general.

3. The Contractor shall provide protection against smoke propagation emanate from welding operations by use of temporary smoke barriers and/or temporary local ventilation of areas involved and shall provide a fire extinguisher at all areas where welding is being carried out.

4. Special provisions shall be made by the Contractor to protect existing building areas when exposed by removal of existing roofing and walls or other exterior surfaces. All necessary precautions and measures shall be taken by the Contractor to ensure the interior of existing building is weather tight and fully secure at all times.

5. All Work in areas to receive renovations shall be completely sealed off by the

Contractor from the remainder of the building. Temporary partitions shall b e installed, covered, insulated and sealed from construction noise and dust. All debris shall be removed daily from these areas, as well as from all areas of the site, to maintain clean, safe and efficient site conditions. Control of dust

6. +is critical. Take all necessary precautions and schedule Work to ensure adjoining occupied areas are completely dust free at all times.

7. The Contractor shall take all necessary precautions to fully protect the existing equipment and furnishings against damage from water, dust or the like, during installation of new work, including cutting of existing roof and walls. Dust screens and/or platforms shall be provided as specified above.

Cover and protect existing furnishings, equipment, etc., by means acceptable to the Owner whenever Work is to be carried on above or beside such existing items.

8. Where material or equipment is being transported within the existing build-ing on carts or pallets, such carts or pallets shall have rubber tires.

9. The Contractor shall provide temporary hoarding to maintain unobstructed access to exits and to prevent access to construction areas in accordance with all Safety Regulations and good practice.

10. The Contractor shall seal, supply and return ducts and chases or temporary filters installed to prevent migration of dust and noise through existing air systems.

11. Where work is confined inside a room, the door shall be temporarily weather stripped to prevent dust from leaving the room.

12. The Contractor shall make good, at no expense to the Owner, any damage or disruption caused to the existing building contents and to the adjoining property, utilities and services not called for as part of the Work of this contract. All repair work shall only be done after consultation with the Owner, Consultant, appropriate parties and authorities and to standards and codes or the authorities having jurisdiction.

13. Making well shall mean restoration to at least the original condition in terms of strength, safety, workmanship and appearance.

14. The Contractor shall protect existing exterior finishes, windows, doors, etc., at all times from damage from hoists, chutes, materials handling equipment, or new construction.

15. The Contractor shall obtain the Consultant’s approval prior to cutting openings through structural members.

B. When working around existing functioning buildings and/or facilities:

1. The Contractor shall take all practical means to:

a. Assure access is maintained to operational facilities at all times;

b. Assure protection of such facilities;

c. No excavation shall occur within 2 meters of an existing structure without an approved plan to assure protection of the structure, including but not limited to: shoring, backfill and compaction methods that will not disturb the existing foundation, equipment to be used in the vicinity.

d. Repair any damage to original or better condition, including underlying substrate and foundation of buildings.

e. Protect patient and staff privacy at all times;

f. Maintain a clean and safe environment.

PART 2 PRODUCTS (Not Used)

-END OF SECTION-

SECTION 024119

SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

A. Demolition and removal of selected portions of building or structure.

B. Demolition and removal of selected site elements.

C. Salvage of existing items to be reused or recycled.

B. Related Requirements:

A. Section 011000 "Summary" for restrictions on use of the premises, Owner-occupancy requirements, and phasing requirements.

B. Section 017300 "Execution" for cutting and patching procedures.

1.3 DEFINITIONS

A. Remove: Detach items from existing construction and dispose of them off-site unless indicated to be salvaged or reinstalled.

B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to Owner ready for reuse.

C. Remove and Reinstall: Detach items from existing construction, in a manner to prevent damage, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Leave existing items that are not to be removed and that are not otherwise indicated to be salvaged or reinstalled.

E. Dismantle: To remove by disassembling or detaching an item from a surface, using gentle methods and equipment to prevent damage to the item and surfaces; disposing of items unless indicated to be salvaged or reinstalled. Examples include the existing escalators.

1.4 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

1.5 PREINSTALLATION MEETINGS

A. Pre-demolition Conference: Conduct conference at Project site.

A. Inspect and discuss condition of construction to be selectively demolished.

B. Review structural load limitations of existing structure.

C. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

D. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.

E. Review areas where existing construction is to remain and requires protection.

1.6 INFORMATIONAL SUBMITTALS

A. Qualification Data: For refrigerant recovery technician.

B. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for environmental protection, for dust control and, for noise control. Indicate proposed locations and construction of barriers.

C. Schedule of Selective Demolition Activities: Indicate the following:

A. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity.

B. Interruption of utility services. Indicate how long utility services will be interrupted.

C. Coordination for shutoff, capping, and continuation of utility services.

D. Existing Conditions Survey: Using photographs or video recordings, show existing conditions of adjacent construction, including finish surfaces, that might be misconstrued as damage caused by demolition operations. Comply with Section 013233 "Photographic Documentation."

Submit before Work begins.

E. Warranties: Documentation indicating that existing warranties are still in effect after completion of selective demolition.

1.7 CLOSEOUT SUBMITTALS

A. Existing Warranty Documentation.

B. Inventory: Submit a list of items that have been removed and salvaged.

1.8 FIELD CONDITIONS

A. Conditions existing at time of inspection for bidding purpose will be maintained by

Owner as far as practical.

B. Notify Construction Manager of discrepancies between existing conditions and

Drawings before proceeding with selective demolition.

C. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

1. Hazardous materials will be removed by Owner before start of the Work.

2. If suspected hazardous materials are encountered, do not disturb; immediately notify

Construction Manager. Hazardous materials will be removed by Owner under a separate contract.

D. Storage or sale of removed items or materials on-site is not permitted.

E. Utility Service: Maintain existing utilities indicated to remain for reuse and protect them against damage during selective demolition operations.

1. Maintain fire-protection facilities in service during selective demolition operations.

1.9 COORDINATION

A. Arrange selective demolition schedule so that subcontractors are aware of the limits of their demolition and do not demolish areas, items, or systems assigned to other subcontractors.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

Standards: Comply with ASSE A10.6 and NFPA 24.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that utilities have been disconnected and capped before starting selective demolition operations.

B. Review Project Record Documents of existing construction or other existing condition and hazardous material information provided by Owner. Owner does not guarantee that existing conditions are same as those indicated in Project Record Documents.

C. Submit report of Proposed Protection Measures.

D. Submit Schedule of Selective Demolition Activities.

E. Submit Existing Conditions Survey: Record existing conditions by use of preconstruction photographs or video.

A. Comply with requirements specified in Section 013233 "Photographic Documentation."

B. Inventory and record the condition of items to be removed and salvaged. Provide photographs or video of conditions that might be misconstrued as damage caused by salvage operations.

3.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems to Remain: Maintain services/systems indicated to remain and protect them against damage.

B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off utility services and mechanical/electrical systems serving areas to be selectively demolished.

0. Arrange to shut off utilities with utility companies.

1. If services/systems are required to be removed, relocated, or abandoned, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of building.

2. Disconnect, demolish, and remove fire-suppression systems, plumbing, and

HVAC systems, equipment, and components indicated on Drawings to be removed.

. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or plug remaining piping with same or compatible piping material.

a. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or compatible piping material and leave in place.

b. Equipment to Be Removed: Disconnect and cap services and remove equipment.

c. Equipment to Be Removed and Reinstalled: Disconnect and cap services and remove, clean, and store equipment; when appropriate, reinstall, reconnect, and make equipment operational.

d. Equipment to Be Removed and Salvaged: Disconnect and cap services and remove equipment and deliver to Owner.

e. Ducts to Be Removed: Remove portion of ducts indicated to be removed and plug remaining ducts with same or compatible ductwork material.

3.3 PROTECTION

A. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

0. Provide protection to ensure safe passage of people around selective demolition area.

1. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.

2. Protect walls, ceilings, floors, and other existing finish work that are to remain or that are exposed during selective demolition operations.

B. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

0. Strengthen or add new supports when required during progress of selective demolition.

C. Remove temporary barricades and protections where hazards no longer exist.

3.4 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Proceed with selective demolition systematically, from higher to lower level. Complete selective demolition operations above each floor or tier before disturbing supporting members on the next lower level.

2. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.

Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.

3. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.

4. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

5. Maintain fire watch during and for at least eight (8) hours after flame-cutting operations.

6. Maintain adequate ventilation when using cutting torches.

7. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

8. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.

9. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

10. Dispose of demolished items and materials promptly. Comply with requirements in

Section 017419 "Construction Waste Management and Disposal."

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

C. Removed and Salvaged Items:

1. Clean salvaged items.

2. Pack or crate items after cleaning. Identify contents of containers.

3. Store items in a secure area until delivery to Owner.

4. Transport items to Owner's storage area designated by Owner.

5. Protect items from damage during transport and storage.

D. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

E. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Construction Manager, items may be removed to a suitable, protected storage location during selective demolition and cleaned and reinstalled in their original locations after selective demolition operations are complete.

3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

i. Concrete Slabs-on-Grade: Saw-cut perimeter of area to be demolished, and then break up and remove.

ii. Masonry: Demolish in small sections. Cut masonry at junctures with construction to remain, using power-driven saw, and then remove masonry between saw cuts.

iii. Resilient Floor Coverings: Remove floor coverings and adhesive according to recommendations in RFCI's "Recommended Work Practices for the Removal of

Resilient Floor Coverings." Do not use methods requiring solvent-based adhesive strippers.

iv. Roofing: Avoid roofing removal if possible. If needed, remove no more existing roofing than what can be covered in one day by new roofing and so that building interior remains watertight and weathertight. Patch and repair with same roofing type with system that is in compliance with maintaining roof warranty.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolition waste materials from Project site and recycle or dispose of them according to Section 017419 "Construction Waste Management and Disposal."

0. Do not allow demolished materials to accumulate on-site.

1. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

2. Remove debris from elevated portions of building by chute, hoist, or other device that will convey debris to grade level in a controlled descent.

3. Comply with requirements specified in Section 017419

"Construction Waste Management and Disposal."

B. Burning: Do not burn demolished materials

3.7 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION

SECTION 033000

CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and

Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes, for the following:

1. Footings.

2. Slabs-on-grade.

3. Building frame members.

4. Building walls.

5. Sidewalks

B. Related Sections:

1. Section 312300 "Excavation and Fill" for granular fill under slabs-on-grade.

1.3 DEFINITIONS

A. Cementitious Materials: Portland cement.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

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.

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

C. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement.

Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement.

D. Formwork Shop Drawings: Prepared by or under the supervision of a qualified engineer detailing fabrication, assembly, and support of formwork.

E. Construction Joint Layout: Indicate proposed construction joints required to construct the structure.

1. Location of construction joints is subject to approval of the Construction Manager.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For installer and manufacturer.

B. Material Certificates: For each of the following, signed by manufacturers:

1. Cementitious materials.

2. Admixtures.

3. Form materials and form-release agents.

4. Floor and slab treatments.

5. Bonding agents.

6. Adhesives.

7. Vapor retarders.

8. Joint-filler strips.

C. Floor surface flatness and levelness measurements indicating compliance with specified tolerances.

D. Field quality-control reports.

E. Minutes of Pre-installation Conference.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: Submit CV for lead installers and supervisor for review and approval by

Construction Manager.

B. Testing Agency Qualifications: An independent agency approved by the Construction Manager.

1. Personnel conducting field tests shall be qualified as ACI Concrete Field Testing Technician, Grade 1, according to ACI CP-1 or an equivalent certification program.

2. Personnel performing laboratory tests shall be ACI-certified Concrete Strength Testing Technician and Concrete Laboratory Testing Technician - Grade I. Testing Agency laboratory supervisor shall be an ACI-certified Concrete Laboratory Testing Technician - Grade II.

C. Source Limitations: Notify Construction Manager of source or material changes.

D. ACI Publications: Comply with the following unless modified by requirements in the Contract

Documents:

1. ACI 301, "Specifications for Structural Concrete," Sections 1 through 5.

2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

E. Concrete Testing Service: Engage a qualified independent testing agency to perform material evaluation tests and to design concrete mixtures. Testing agency to be approved by Construction Manager.

F. Pre-installation Conference: Conduct conference at Project site.

1. Before submitting design mixtures, review concrete design mixture and examine procedures for ensuring quality of concrete materials. Require representatives of each entity directly concerned with cast-in-place concrete to attend, including the following:

a. Contractor's superintendent.

b. Independent testing agency responsible for concrete design mixtures.

c. Concrete subcontractor.

2. Review testing and inspecting agency procedures for field quality control, concrete finishes and finishing, hot-weather concreting procedures, curing procedures, construction contraction and isolation joints, and joint-filler strips, forms and form removal limitations, anchor rod and anchorage device installation tolerances, steel reinforcement installation, floor and slab flatness and levelness measurement, concrete repair procedures, and concrete protection.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Steel Reinforcement: Deliver, store, and handle steel reinforcement to prevent bending and damage.

PART 2 - PRODUCTS

2.1 FORM-FACING MATERIALS

A. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material. Provide lumber dressed on at least two edges and one side for tight fit.

B. Chamfer Strips: Wood, metal, PVC, or rubber strips, 3/4 by 3/4 inch (19 by 19 mm), minimum.

C. Form-Release Agent: Commercially formulated form-release agent that will not bond with, stain, or adversely affect concrete surfaces and will not impair subsequent treatments of concrete surfaces.

1. Formulate form-release agent with rust inhibitor for steel form-facing materials.

D. Form Ties: Factory-fabricated, removable or snap-off metal or glass-fiber-reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of concrete on removal.

1. Furnish units that will leave no corrodible metal closer than 1 inch (25 mm) to the plane of exposed concrete surface.

2. Furnish ties that, when removed, will leave holes no larger than 1 inch (25 mm) in diameter in concrete surface.

2.2 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), deformed.

B. Plain-Steel Welded Wire Reinforcement: ASTM A 185/A 185M, plain, fabricated from as-drawn steel wire into flat sheets.

2.3 REINFORCEMENT ACCESSORIES

A. Joint Dowel Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), plain-steel bars, cut true to length with ends square and free of burrs.

B. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete of greater compressive strength than concrete.

2.4 CONCRETE MATERIALS

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

1. Portland Cement: ASTM C 150, Type I or Type II

B. Normal-Weight Aggregates: ASTM C 33, graded.

1. Maximum Coarse-Aggregate Size: 3/4 inch (19 mm) nominal.

2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Water: ASTM C 94/C 94M.

2.5 ADMIXTURES

Chemical Admixtures: 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 as approved by the Construction Manager. Do not use calcium chloride or admixtures containing calcium chloride.

2.6 VAPOR RETARDERS

A. Sheet Vapor Retarder: ASTM E 1745, Class B. Include manufacturer's recommended adhesive or pressure-sensitive tape.

B. Granular Fill: Clean mixture of crushed stone or crushed or uncrushed gravel; ASTM D 448, Size 57, with 100 percent passing a 1-1/2-inch (37.5-mm) sieve and 0 to 5 percent passing a No. 8 (2.36-mm) sieve.

2.7 CURING MATERIALS

A. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete.

B. Absorptive Cover: burlap cloth made from jute or kenaf.

C. Moisture-Retaining Cover: polyethylene film or white burlap-polyethylene sheet. Water: Potable.

2.8 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D 1751, asphalt-saturated cellulosic fiber.

B. Bonding Agent: ASTM C 1059/C 1059M, Type II, non-redispersible, acrylic emulsion or styrene butadiene.

2.9 CONCRETE MIXTURES, GENERAL

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.

1. Use a qualified independent testing agency for preparing and reporting proposed mixture designs based on laboratory trial mixtures.

B. Admixtures: Use admixtures according to manufacturer's written instructions as approved by

Construction Manager.

2.10 CONCRETE MIXTURES FOR BUILDING ELEMENTS

A. Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 3000 psi (20.7 MPa) at 28 days.

2. Maximum Water-Cementitious Materials Ratio: 0.50.

3. Slump Limit: 8 inches (200 mm) for concrete with verified slump of 2 to 4 inches (50 to 100 mm) before adding high-range water-reducing admixture or plasticizing admixture, plus or minus 1 inch (25 mm).

2.11 FABRICATING REINFORCEMENT

A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."

2.12 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M, and furnish batch ticket information.

1. When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 deg C), reduce mixing and delivery time to 60 minutes.

B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to

ASTM C 94/C 94M. Mix concrete materials in appropriate drum-type batch machine mixer.

1. For mixer capacity of 1 cu. yd. (0.76 cu. m) or smaller, continue mixing at least 1-1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released.

2. For mixer capacity larger than 1 cu. yd. (0.76 cu. m), increase mixing time by 15 seconds for each additional 1 cu. yd. (0.76 cu. m).

3. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water added. Record approximate location of final deposit in structure.

PART 3 - EXECUTION

3.1 FORMWORK

A. Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until structure can support such loads.

B. Construct forms tight enough to prevent loss of concrete mortar.

C. Fabricate forms for easy removal without hammering or prying against concrete surfaces.

Provide crush or wrecking plates where stripping may damage cast concrete surfaces.

Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.

1. Install keyways, reglets, recesses, and the like, for easy removal.

2. Do not use rust-stained steel form-facing material.

D. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting-type screeds.

E. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.

F. Chamfer exterior corners and edges of permanently exposed concrete.

G. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items.

H. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

I. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.

J. Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement.

3.2 EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

3.3 REMOVING AND REUSING FORMS

A. General: Formwork for sides of beams, walls, columns, and similar parts of the Work that does not support weight of concrete may be removed after cumulatively curing at not less than

50 deg F (10 deg C) for 24 hours after placing concrete. Concrete has to be hard enough to not be damaged by form-removal operations and curing and protection operations need to be maintained.

1. Leave formwork for beam soffits and other structural elements that supports weight of concrete in place until concrete has achieved its 28-day design compressive strength.

B. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces.

Apply new form-release agent.

C. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints.

Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless approved by Construction Manager.

D. Sheet Vapor Retarders: Place, protect, and repair sheet vapor retarder according to ASTM E

1643 and manufacturer's written instructions.

1. Lap joints 6 inches (150 mm) and seal with manufacturer's recommended tape.

E. Granular Course: Cover vapor retarder with granular fill, moisten, and compact with mechanical equipment to elevation tolerances of plus 0 inch (0 mm) or minus 3/4 inch (19 mm).

3.4 STEEL REINFORCEMENT

A. General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement.

1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.

B. Clean reinforcement of loose rust and mill scale, earth, and other foreign materials that would reduce bond to concrete.

C. Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover.

D. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces.

E. Install welded wire reinforcement in longest practicable lengths on bar supports spaced to minimize sagging. Lap edges and ends of adjoining sheets at least one mesh spacing. Offset laps of adjoining sheet widths to prevent continuous laps in either direction. Lace overlaps with wire.

3.5 JOINTS

A. General: Construct joints true to line with faces perpendicular to surface plane of concrete.

B. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by Architect.

1. Place joints perpendicular to main reinforcement. Continue reinforcement across construction joints unless otherwise indicated. Do not continue reinforcement through sides of strip placements of floors and slabs.

2. Form keyed joints as indicated. Embed keys at least 1-1/2 inches (38 mm) into concrete.

3. Locate joints for beams, slabs, joists, and girders in the middle third of spans. Offset joints in girders a minimum distance of twice the beam width from a beam-girder intersection.

C. Contraction Joints in Slabs-on-Grade: Form weakened-plane contraction joints, sectioning concrete into areas as indicated. Construct contraction joints as indicated.

1. Grooved Joints: Form contraction joints after initial floating by grooving and finishing each edge of joint to a radius of 1/8 inch (3.2 mm). Repeat grooving of contraction joints after applying surface finishes. Eliminate groover tool marks on concrete surfaces.

2. Sawed Joints: Form contraction joints with power saws equipped with shatterproof abrasive or diamond-rimmed blades. Cut 1/8-inch- (3.2-mm-) wide joints into concrete when cutting action will not tear, abrade, or otherwise damage surface and before concrete develops random contraction cracks.

D. Isolation Joints in Slabs-on-Grade: After removing formwork, install joint-filler strips at…