SOW ZKC CTRB_Steps and Landing.pdf

SCOPE OF WORK

POWER SERVICES BUILDING (PSB)

STAIR REPLACEMENT

FEDERAL AVIATION ADMINISTRATION

ZKC AIR ROUTE TRAFFIC CONTROL

CENTER (ARTCC)

OLATHE, KANSAS

Table of Contents

FACILITY LOCATION

SCHEDULE

WORK SUMMARY

GENERAL REQUIREMENTS

SUBMITTALS

DEMOLITION

MATERIALS

CONCRETE FOUNDATIONS

HANDRAIL FABRICATION AND INSTALLATION

GROUNDING

ASPHALT PATCHING

FACILITY REFERENCE DRAWINGS

PHOTOGRAPHS

TABLE OF DRAWINGS AND PHOTOGRAPHS

CE-ZKC-6234-0-1

CE-D-6233-S03

CE-D-6233-A10

CE-D-6233-S16

CE-D-6233-E020

CE-D-6233-E022

CE-D-6244-C10

STAIRS - LOOKING EAST

STAIRS - LOOKING SOUTH

STAIRS-NORTH SIDE

STAIRS-SOUTH SIDE

RAIL GROUNDING

FACILITY LOCATION. This work will take place at the Air Route Traffic Control Center (ARTCC) at 250 Rogers Road, Olathe, Kansas 66062.

SCHEDULE. Work must be performed during a regularly scheduled 40-hour work week. The use of overtime will only be permitted when approved at least 48 hours in advance by the FAA and the FAA has resources and funding available to cover overtime work. Additional overtime will only be considered to make up lost time for weather related delays or if the Contractor falls behind schedule and it has been determined by the FAA that the Contractor has committed and continues to commit sufficient resources to make sufficient progress to get back on schedule and complete the work in a timely manner.

The Contractor must leave one 12-foot-wide minimum lane of the drive open between the buildings at all times. If this is deemed problematic by the Contractor, Contractor must discuss with the COTR alternatives that will provide FAA adequate ingress and egress to ensure proper functioning of the facility at all times.

The Contractor must schedule all work so that concrete stairs have a minimum of 7 days of cure time prior to installation of the handrail. Work on site must not begin until the Contractor has all materials required to complete the work defined in the SOW.

WORK SUMMARY

The Contractor must furnish all labor, material, equipment, tools, supplies, transportation, etc. required to complete all work defined in the Statement of Work (SOW) and as shown on the drawings. All work performed and all materials and equipment furnished or used must be in compliance with the requirements of the SOW and be approved by the Contracting Officer’s Technical Representative (COTR). This must include, but not be limited to, testing, inspection, scheduling, reporting, submittals, and installation in accordance with the manufacturer’s written instructions, installation details, and recommendations.

The work includes but is not limited to the following:

1. Demolish the existing concrete stairs and handrailing.

2. Furnish, fabricate and install hot dipped galvanized steel handrailing and all appurtenances, reinforced concrete stair, miscellaneous materials, etc. in accordance with the requirements of the SOW and reference drawings included.

3. Install concrete pavement with asphalt surfacing where existing pavement in the drive lane is removed to construct the new stairs. Replace all concrete curbs and sidewalk removed to construct new stairs.

4. Connect a new 4/0 bare copper ground conductor to the existing ground conductor and connect conductor to the new handrailing.

5. Install grounding jumpers to the new steel reinforcing bars.

6. Remove and dispose of all trash/debris resulting from this work.

GENERAL REQUIREMENTS

It is strongly recommended that the Contractor conduct a thorough and complete site visit and examination prior to bidding to verify the existing conditions, to determine the extent of work to be completed, and to determine the conditions under which the work must be done. The date and time of the site visit is included in the solicitation package furnished by the Contracting Officer.

Prior to beginning work, the Contractor must conduct a walk through and inspection of the site and facility with the COTR and note the existing conditions and any damage. The inspection must include all areas affected by the performance of work under this contract. Existing damage or defects must be noted and will be the basis for determination of damages caused by the Contractor’s operations. Failure of the Contractor to perform this inspection must indicate that all areas are free of damage and defects.

The Contractor must restore the site to a condition equal to or better than the condition that existed at the start of the contract.

Work must be performed during a scheduled work week of 40 hours. The Contractor must furnish a statement of the number of hours, days, and times to be worked per week along with the number of persons on site. Any work outside of this shift will be considered overtime work. The Contractor may work overtime per the requirements of section 1.0 provided the Contractor notifies the COTR a minimum of 48 hours in advance of any weekend, holiday, or overtime work.

The Contractor must meet with the COTR or designated point of contact on a daily basis to discuss and review the work proposed for that day and the following workday to provide specifics about work to be performed each day and week. The review must include any special procedures, constraints, impacts to the facility, or schedule requirements involved in completing the work.

The Contractor must coordinate their work and cooperate with the FAA or any other Contractor performing work on site.

The facility will remain operational throughout the performance of work required by this contract. The Contractor must plan, schedule, sequence, and execute the work in a manner that will minimize disruptions to facility operations.

FAA or other authorized maintenance personnel performing operational functions or routine or emergency maintenance activities must have access to the site. The Contractor must allow the FAA full, uninterrupted access as required without interference. FAA maintenance and emergency response activities must take precedence over the Contractor’s activities.

The Contractor must be on site to accept all deliveries. Notify the COTR 24 hours in advance of any deliveries. Deliver products in manufacturer’s original containers, dry, free of damage, and with all seals and labels legible and intact. All materials must be handled and stored in accordance with any and all recommendations and instructions of the manufacturer. The Contractor must protect all materials from damage and keep them in a like new condition.

The Contractor must protect any existing buildings, grounds, furnishings, equipment, cables, etc. from damage and must be responsible for the repair or replacement of any items damaged during the performance of work under this contract. The Contractor must restore the site to its original condition upon the completion of work. This includes repairing damage to any building, utility, lawn, pavement, sidewalk, etc. caused by the Contractor’s activities on site. Damage to operational equipment or cabling will be repaired or replaced by the FAA based on requirements to meet the FAA’s mission. The FAA may, at its option, direct the Contractor to make specific repairs or purchase specific replacement material or equipment as deemed necessary to maintain the equipment and facility in accordance with FAA orders, procedures, and directives. In any case, the Contractor must pay for the cost of repairs or replacement for any items damaged by their work under this contract.

The Contractor must limit parking, material storage, and staging areas to those locations designated by the FAA for the Contractor’s use. The Contractor must confine all activities, parking, and access to the minimum areas necessary to complete the work. Vehicle parking must be limited to those locations designated by the FAA.

The Contractor must maintain the job site in a neat and orderly condition. This includes prompt and daily removal of any rubbish, debris, tools, equipment, or materials not required for the work in progress.

All construction debris must promptly be removed from the facility and site and must be stored in covered dumpsters or trucks at all times when on site and while being removed from the site for disposal. Trash and debris resulting from the construction of this project must not be allowed to be carried by wind outside of the construction area. Loose debris resulting from this project must be continually picked up on a daily basis.

The Contractor must provide and maintain adequate temporary sanitary toilet facilities for those persons employed on the project. The accommodations must be a sanitary, chemical type, portable toilet facility that is cleaned and serviced weekly as a minimum. Toilet facilities must be maintained in a sanitary condition at all times.

The Contractor will have access to power and water from the PSB as required to complete the work identified in the SOW. Contractor must use only approved water hoses, extension cords, ground fault interrupters, other safety devices, etc. FAA will provide Contractor water and electrical connection locations. Contractor must inspect water hoses and extension cords daily to ensure safe and reliable use.

All connections and methods utilized must be approved by the COTR. When usage of FAA water and electricity is complete or when usage will be interrupted for extended periods, Contractor must disconnect water and electrical connections immediately. Contractor must notify FAA when usage is complete or when usage will resume.

The Contractor must furnish all other temporary facilities or construction aids as required to complete the work. Remove all temporary facilities upon completion of work.

The Contractor must perform the work detailed and quantified in the Statement of Work. Work must be completed in a neat and first-class workmanship manner in accordance with manufacturer’s recommendations and instructions for each item of work included in this contract and as specified.

The SOW provides the minimum requirements for materials furnished and installed under this contract.

The Contractor must furnish submittals for all materials proposed to be used under this contract as indicated below. Alternate products that are equal to or exceed those listed below may be submitted for approval by the FAA. Materials must be installed in accordance with the manufacturer’s written recommendations and instructions.

The facility is located on secured property. The site is accessible off of a public road via a secured gate.

Access to the facility will be provided by the FAA or the COTR. The FAA may at its option provide badging access to the Contractor to allow direct access to the site for work access, deliveries, etc. The Contractor must schedule all deliveries to coincide with when they will be on site performing work.

SUBMITTALS

The Contractor must furnish submittals to the FAA for all materials proposed to be used or incorporated into the work under this contract. Furnish electronic copies of submittals to the COTR. Include manufacturer’s standard product and data sheets, catalogues, performance data, installation instructions and recommendations, test data, evidence of compliance, etc. Include SDS sheets for products used under this contract or brought on site. The Contractor must maintain a complete set of SDS sheets on site throughout the performance of work under this contract. Include plans for the execution of work, methods utilized to perform work, and removal and disposal of materials. The Contractor must submit a schedule detailing the sequence in which the work will be performed and indicating the anticipated duration of activities.

All submittals must be submitted in ample time for a determination of specification and contract document compliance by the FAA before the materials, which the submittal represents, are fabricated or delivered to the site. All submittals must be approved prior to their incorporation into the work. The time necessary for FAA approval or disapproval of samples, certificates, test reports, and shop drawings will not be more than 14 calendar days after receipt of the item. All materials installed in the work must match the approved submittals. After a submission has been approved, no substitutions will be permitted without the Contractor requesting the substitution in writing and receiving written approval by the COTR. The Contractor must maintain a copy of the approved submittals on site for use by their employees to ensure compliance with contract requirements and the manufacturer’s requirements.

Submittals are required for the following items:

Concrete construction materials including cement, admixtures, aggregates, and source of mixing water.

Curing methodology to be utilized for concrete.

Steel handrailing fabrication. Include drawings detailing fabrication, assembly, and layout of materials required for the new stair system. Fabrication drawings must be stamped and approved by a licensed professional engineer prior to submission.

Miscellaneous metals including plates and threaded rods and nuts.

Chemical anchor bolts and reinforcing dowels.

Layout drawings of the new stairs and landing. Drawings are to include plans, sections, and details including thicknesses, reinforcing layout and sizes, locations of dowels into the existing foundation, placement of handrail and attaching materials.

Construction schedule.

DEMOLITION

The Contractor must carefully demolish the existing concrete stairs and appurtenances without damaging the existing Power Services building foundation and superstructure. Saw cut the existing concrete pavement with asphalt overlay and concrete pavements to the full depth only to the limits beyond the stairs necessary to demolish the existing stairs and install the new stairs. Saw cuts are to be full depth, neat, straight lines by utilizing a saw that will produce a smooth cut for the required depth.

Remove the concrete curb and sidewalk adjacent to the steps on each end of the stairs to the next joint. If saw cutting is required to remove the sidewalk portions, the cuts must be full depth so not to damage the adjacent sidewalk while removing the demolished portion. If the adjacent portion to remain is damaged during demolition, Contractor must sawcut the remaining portion in a new location.

The Contractor must install caution tape on the interior side of the doors prior to the start of demolition indicating that the exit is temporarily out of service. Coordinate with the FAA to identify alternate exit routes and ensure they are free from obstructions.

Note: Existing perimeter grounding conductors are located outside the Power Services Building as shown on reference drawing CE-D-6233-E020. Contractor is to ensure that the existing grounding conductors are not damaged in any way. If the existing grounding conductors are damaged the Contractor must immediately inform the COTR to determine what remediation measures are to be implemented before construction can continue.

Dust generated by demolition must be minimized by water spray or other methods acceptable to the COTR. All demolition debris must be removed from the immediate work area as soon as demolition progresses. Debris may not be stockpiled anywhere in the drive area between the buildings. Place debris in trucks or trailers as they are being removed. The Contractor may park the trucks or trailers at a location approved by the COTR outside of work hours until they are full and ready to be taken off site for disposal.

MATERIALS

The following sections of the SOW provide the minimum requirements for materials furnished and installed under this contract. The Contractor must furnish submittals for all materials proposed for use under this contract identified above. The Contractor may submit alternate products that meet or exceed these requirements but must clearly demonstrate that the proposed product is equal to or better than that specified. All materials must be installed in accordance with the manufacturer’s written instructions and recommendations. All materials must be delivered to the jobsite in sealed containers with all labels intact. Materials must be labeled to show the designated name, formula, specification number, lot number, color, date of manufacture, shelf life, curing time, manufacturer's directions, and name of manufacturer. Multi-component products must list mixing instructions. All materials must be stored and used in accordance with the manufacturer’s recommendations, directions, and instructions.

See below for concrete materials that must be used in the work. Other materials include:

Chemical anchors - Hilti HIT-Z 5/8-inch Anchor rods and reinforcing dowels with Hilti HIT-HY 200 V3 Anchoring system or acceptable equal.

CONCRETE FOUNDATIONS

Concrete work for the new stairs must be performed in accordance with ACI-301 Specifications for Structural Concrete, Kansas City Metro Materials Board KCMMBK4K (https://www.kcmmb.org/home-concrete), and as noted herein.

Contractor must design the new stairs and landing in accordance with reference drawings CE-D-6233- A10, detail 5, CE-D-6233-S03, and CE-D-6233-S16, section F. Contractor must communicate to the COTR any intended alterations or deviations from the reference drawings before development of layout drawings for this project. Contractor must dowel reinforcing into the existing PSB foundation wall 6 inches deep at 12 inch spacing. Dowels are to be #5 reinforcing rods set in Hilti HIT-HY 200 V3 epoxy or acceptable equal.

Reinforcing must be sized and placed as indicated on the reference drawings unless shown otherwise on the layout drawings approved by the COTR. Reinforcing steel must be ASTM A615, grade 60. Ties must be 16 gage minimum annealed black steel. Securely tie all steel and verify accuracy of placement as shown on the drawings. Reinforcing must be shop fabricated and be free of scale, rust or any coating that would reduce the bond between the concrete and reinforcing. Splices and laps must be in accordance with ACI-318. Minimum concrete coverage below grade must be 3” and minimum coverage must be 2” for above ground coverage. Anchor bolts, hex nuts, and washers must be galvanized.

Concrete for the foundations may be cast against smooth cut earth except for all exposed concrete down to 6” below grade which must be formed. Securely brace the forms so that the completed foundations are plumb and square. The exposed edges must have a ¾” chamfered edge. Repair any voids in the completed concrete. Excessive voids, honeycombing, or exposed reinforcing will be considered unacceptable work and be rejected. Provide ready mixed fiber reinforced concrete in compliance with ASTM C94. Concrete must have a minimum 28-day compressive strength of 4000 PSI. Air entrainment must be 6%. Slump = 3” to 4”. Cement must be ASTM C150, type 1 gray Portland cement. Aggregate must comply with ASTM C33: fine – natural sand and coarse – crushed quartz, ¾” maximum. The concrete mix must utilize a water-repelling or waterproofing admix or additive at the batch plant to seal the concrete and provide weather protection to all the concrete. Place in accordance with ACI 305R for hot weather concreting and ACI 306R for cold weather concreting. Concrete must be placed in such a manner that will prevent segregation of materials or displacement of reinforcing or anchor bolts. Minimize drop distance when placing concrete into forms. Thoroughly compact and consolidate concrete during and immediately after placement by means of mechanical vibrators.

Comply with ACI 309. Finish the top of the stairs and landing with a slight slope (approximately 1/8” per foot) to prevent standing water and to allow water to drain off. Provide a broom finish on the stairs and landing. Concrete held in a mixer longer than 90 minutes after the batch time must not be used.

Apply curing compound to all concrete after placement.

HANDRAIL FABRICATION AND INSTALLATION

The Contractor must fabricate and install galvanized 1-1/2 inch standard steel pipe similar to the details shown on reference drawing CE-D-6233-A10 with the exception that instead of the posts being set in pipe sleeves, the handrail must be mounted on the west side of the concrete stairs utilizing ½ inch galvanized steel plates 6 inches wide by 4 inches high welded to the handrail on both sides and connected to the concrete stairs utilizing two 5/8 inch galvanized epoxy anchors a minimum 6 inches deep.

The installation must also comply with the following requirements:

All miscellaneous steel must be fabricated from steel stock and must be hot dip or mechanically galvanized and assembled with hot dip galvanized hardware per ASTM A36, ASTM A 123, ASTM A 153. Prior to galvanizing grind smooth all welded joints and connections.

Welding must be in accordance with American Welding Society AWS D1.1, Structural welding code – steel. To the maximum extent possible, perform welding in the shop prior to galvanizing.

The handrail must be fabricated in one piece to minimize the time required on site for assembly.

Clean and treat any field welds with a zinc rich galvanizing repair compound.

The completed installation must meet or exceed the requirements of OSHA Part 1910, Subpart D, Standard 1910.24, Fixed Industrial Stairs. Riser height and tread depth must be uniform throughout the entire set of stairs.

GROUNDING

Note that existing perimeter grounding conductors are located outside the Power Services Building as shown on reference drawing CE-D-6233-E020. Contractor is to ensure that the existing grounding conductors are not damaged in any way. If the existing grounding conductors are damaged the Contractor must immediately inform the COTR to determine what remediation measures are to be implemented before construction can continue.

The existing handrail is grounded via 4/0 copper ground conductor. Cut the existing ground conductor and connect new 4/0 conductor to existing conductor with an exothermic weld, Cadweld connector SSC- 2P, or acceptable equal. Connect the conductor to the handrail via exothermic weld, with Cadweld connector VSC-2Q-V1-1/2 or acceptable equal. The handrail must be continuously grounded. Concrete reinforcing steel in the new stair must be grounded similar to that shown on Detail 10 on reference drawing CE-D-6233-E022. Exothermically weld a 4/0 bare conductor to one rebar in the landing, to one rebar in the stairs at each end, and to one vertical rebar in the exterior wall.

ASPHALT PATCHING

Asphalt patching must be in accordance with:

KANSAS DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION TO THE

STANDARD SPECIFICATIONS, EDITION OF 1990

SECTION 812

PAVEMENT PATCHING

Remove existing asphalt and concrete pavement, and aggregate substates only to the extent that will be necessary to demolish the existing stairs and construct the new stairs. Ensure that the remaining pavement is not subject to undermining of the aggregate substates. If undermining occurs, remove additional pavement until the aggregate substates are stable.

Before reinstalling asphalt install and compact aggregate substates as shown on reference drawing CE- D-6244-C10, Detail 3.

FACILITY REFERENCE DRAWINGS

The following drawings are included for reference or informational purposes to provide the Contractor with additional details and information about the site, details of the existing facility construction, and to show the locations where work is to be performed. Portions of the drawings may not have been as-built to reflect existing conditions. The Contractor must verify the accuracy of the information on these drawings pertaining to this project during the pre-bid site visit. The drawings also provide information about the site layout and conditions under which work must be performed. Drawings have been reduced and are not to scale. A list of drawings is included below and pertinent information for each drawing is annotated. The notes below provide additional information on work the Contractor is required to perform.

CE-ZKC-6234-0-1: This drawing is included to show the general plan of the Air Route Traffic Control Center. The Power Services Building is just west of Parking Lot B.

CE-D-6233-S03: This drawing is included to show the foundation plan of the Power Services Building. The exterior stair that must be replaced is shown between column rows 3’ and 5’ and just west of column row F.

CE-D-6233-A10: This drawing is included to show detail of the handrailing to be used on the new stairs. Instead of the posts being set in concrete sleeves the handrailing is to be attached according to Section 6.0.

CE-D-6233-S16: This drawing is included to show the foundation details for the new stairs and landing. If the Contractor has recommendations to improve the constructability and durability or the concrete stairs, Contractor must first contact the COTR to discuss the recommendations prior to development of new drawings.

CE-D-6233-E020: This drawing is included to show the location of the exterior grounding conductors that are in the vicinity of the new stairs. The Contactor must determine the location and depth of these conductors before starting demolition of the existing stairs. Any deviation from this drawing must be brought to the attention of the COTR so that alterations that may be required can be developed before demolition and construction begins.

CE-D-6233-E022, Detail 10: This drawing is included to show how grounding to the new reinforcing is be accomplished.

CE-D-6244-C10, Detail 3: This drawing is included to show how the removed pavement must be repaired.

CE-ZKC-6234-0-1

CE-D-6233-S03

CE-D-6233-A10

CE-D-6233-S16

CE-D-6233-E020

CE-D-6233-E022

CE-D-6244-C10

PHOTOGRAPHS

The following photographs and descriptions are included to provide additional details of the existing site conditions and to provide additional details pertaining to the work required and included in this SOW.

Stairs - Looking East

Stairs - Looking South

Stairs-North Side

Stairs-South Side

Rail Grounding