SOW.pdf

SCOPE OF WORK

REPLACE DAMAGED CONCRETE

VISITOR CENTER SHELTER FACADE

FLIGHT 93 NATIONAL MEMORIAL

I. BACKGROUND AND PURPOSE

Flight 93 National Memorial (FLNI) is a national memorial located in rural Pennsylvania commemorating the heroic actions of the forty passengers and crew members aboard United Airlines Flight 93 on September 11, 2001.

The purpose of this contract is to provide for the removal of the existing aluminum gutter system and metal fascia on the Memorial Plaza Arrival Court Visitor Shelter at the memorial near Stoystown, Pennsylvania, and the installation of new metal drip edge flashing, as well as repairs to existing concrete fascia.

The original roof system consisted of a concrete deck with tapered insulation and a PVC membrane roof sloping to an external PVC-coated metal flashing terminated in a reglet with sealant. The original detailing and implementation of the roof edge construction was inadequate for this region with a significant number of freeze/thaw cycles. As a result, the roof edge failed and allowed water intrusion into the concrete fascia causing freeze/thaw cycles to crack the concrete fashion in areas. As a result of this failure, an attempt was made a year or two after the initial construction to address this problem by incorporating a gutter system around the entire perimeter with two scupper drains located at each end of the shelter.

All of this contract work should be completed by a contractor certified in the specified Sika roofing system or equal, and certification in Jahn repair products or equal.

II. SCOPE AND OBJECTIVES

The project shall remedy damage to the existing concrete fascia of the Visitor Shelter at the Memorial Plaza. The project includes coordination with park staff.

The contractor shall provide all services including labor, materials, facilities, and travel necessary to detail, order, fabricate, transport to the site, and execute all elements in accordance with the specifications as detailed in this contract and its attachments.

The contractor shall prepare the existing site as described in the provided technical report and install remedies as described in the same report. Preparation of the site shall be done in accordance with local laws, policies, building codes, and National Park Service policies.

. General Requirements

1. Project Management

The contractor’s project manager shall schedule, coordinate, oversee, and manage work produced and installed under this contract.

The contractor’s project manager shall be the single point of contact between the contractor and the National Park Service (NPS) Contracting Officer's Representative (COR). The contractor's project manager shall be in contact with the COR on no less than a weekly basis.

In addition, the contractor’s project manager shall perform the following work:

a. Quality Control:

Provide quality control to ensure that all elements of project work meet the requirements of the contract specifications and that all modifications are implemented.

b. Schedule:

The contractor shall prepare an overall project schedule including milestone dates for all submittals, fabrication in either Microsoft Project, Microsoft Word or Microsoft Excel, and submit to the NPS COR for approval. The contractor shall track all work progress to ensure that the project is completed according to the schedule.

The contractor’s project manager shall be present at all project meetings.

The contractor shall coordinate with the COR and park staff to schedule the following meetings:

1 – Post Award Teleconference:

The contractor’s project manager and COR shall attend the post award teleconference. The minimum agenda for this meeting includes the following:

a – General project review b – Review of government-furnished material to the contractor, including but not limited to drawings, plan documents, reference and source material c – Review of plan, structure, and design d – Review the project schedule

2 – Certifications

The contractor must provide the COR with proof of certification in Sika roofing systems or equal, and Jahn repair products or equal, prior to construction commencement.

3 – Pre-Construction Meeting

Prior to construction, the contractor’s project manager and park staff shall meet at the Park.

4 – On-Site Final Walk Through

The contractor’s project manager and park staff shall meet at the park upon completion of construction activities for the final walk through.

c. Travel

The contractor shall be responsible for all travel necessary in the performance of this contract.

d. Government-Furnished Drawings

The contractor’s project manager shall receive all government-furnished drawings and inspect the drawings to ensure that the quality is suitable.

e. Submittals

Coordinate all contractor and subcontractor submittals and review them for legibility, accuracy, completeness, and compliance with contract requirements prior to submitting to the COR for distribution.

Forward all submittals to the COR for distribution, review and approval.

Receive all reviewed submittals and take appropriate action according to the approval or rejection by the COR.

f. Project Closeout

Prepare, and forward to the COR, a closeout package which consists of all government-furnished references and graphic sources, along with all materials generated during the construction process including shop drawings, digital files, production art, and samples. These files shall be printed and organized in a three-ring project binder or organized and provided to the COR digitally or on an appropriate data storage device such as a USB thumb drive. The contractor shall submit two binders to the

COR.

g. Schedule

All work shall be completed no later than November 30, 2021. Please note however that no construction activity or site work of any type is permitted to take place between the dates of September 7, 2021 and September 13, 2021 due to the 20th Anniversary of September 11th Observance Events. During this period the site will be required to be clean, presentable and safe with no equipment or materials left on-site.

2. The contractor shall meet all Sika or equal, and Jahn or equal requirements. All materials shall be new and of first quality. Materials shall meet or exceed the standards and specifications herein or by reference. Factory seconds shall not be accepted. All materials shall comply with this specification or approved equal.

Fit and finish of all materials shall meet or exceed industry standards for architectural grade.

The contractor shall complete removal and make repairs according to the provided government report with specifications.

3. Setup and Construction

The contractor shall provide setup of all materials and equipment so that they do not impede NPS staff, volunteer or visitor movement or pose a safety risk. The NPS will provide a staging area that is appropriate to contractor submittal of detailed requirements. Staging/storage may not be permitted at immediate worksite but may be near in proximity. Requests for equipment and/or materials to be left overnight will be decided on a case-by-case basis depending upon submittal and time allowed for decision-making process.

The contractor shall provide all installation tools, materials, hardware, and personal protective equipment (PPE) to construction personnel in sufficient numbers to accomplish the job. The use of equipment belonging to the government is not acceptable.

Work covered under this contract shall include the following:

a. Permits The contractor shall secure any and all required permits prior to beginning construction.

b. Equipment The contractor shall provide all equipment to complete the work. The contractor shall ensure that all personnel using this equipment are trained.

The contractor shall not use government-furnished equipment or tools for installation.

c. Installation Team

The contractor shall provide adequate personnel, equipment, tools, PPE, and materials to complete removal and repair construction activities as specified in the provided government report.

Installation crews shall be required to wear PPE while on site performing construction work or within the worksite. PPE includes gloves, ear plugs, goggles, and hard hats as required for using tools or operating machines used during construction.

d. Site Installation Condition and Cleanup

During the installation, the contractor shall maintain all areas in a clean condition on a daily basis and provide means of preventing dirt or waste material from being tracked into adjacent areas of the site. All trash, demolished structure and components, and waste shall be removed from the site and disposed of properly on a daily basis. Dirt, concrete slag, or other waste materials shall not be dumped within the site.

The contractor shall provide bags and containers for storage of trash. The contractor shall be responsible for removing waste materials generated during installation from the park on a daily basis. The contractor shall not dispose of their waste within the park, on park grounds, in dumpsters, or containers that belong to the government or to other contractor’s working on-site.

The contractor shall refill all holes and repair all surfaces disturbed during construction with identical materials. Ground surfaces will be cleaned up, repaired, and re-sod with matching grass if needed.

e. Existing Work

The contractor shall request authorization from the park staff prior to cutting, drilling, altering, or removing material within the site that is not part of the scope as detailed in the provided government report. Work that is replaced shall match existing work. Anything damaged or defaced due to the contractor's error during installation shall be restored to the original condition by the contractor. Restoration work shall be coordinated with the park staff contact prior to start of work.

The contractor will coordinate with park staff to coordinate on needs to barricade work areas, relocate barricaded areas, close trail or passageways.

f. Site Protection

The contractor will coordinate with park staff on need for overnight placement or storage of equipment or materials, to include vehicles and/or trailers.

The contractor shall also ensure that equipment, materials or other components are not left unattended and that they are stored in a secure location when the work site is unattended.

The contractor shall be responsible for the security of all equipment, material and components.

III. REVIEW AND APPROVAL

The COR shall notify the contractor, in writing, of approval or rejection of the work within 15 days. Any additions or corrections shall be completed within 21 calendar days. In the event the government delays comments beyond the period specified, the contractor shall be entitled to a day-to-day extension in the completion date.

IV. DELIVERABLES AND DESTINATION POINT

All deliverables shall be shipped, with all shipping and transportation costs prepaid. Deliverables shall be shipped by either registered or certified mail to ensure that shipments can be traced, if lost.

A. Deliverables Shall Include the Following:

1. Project Plan / Schedule

2. Pre-construction samples of materials for approval

3. Meeting minutes from each project meeting or conference call

4. Removal of existing material and replacement with new according to government-provided report with specification recommendations

5. Installation punch list

6. Closeout package

B. Deliverables Shall Be Sent to The Following:

1. COR Deliverables/Exhibit Delivery and Installation:

National Park Service Joshua Manley 1 Washington Parkway Farmington, Pennsylvania 15437

V. LOSS OR DAMAGE

The contractor shall be liable for any loss or damage to any government property caused by negligence, theft, or willful misconduct of the contractor, his agents, servants, and employees, and shall indemnify and save the government harmless against all actions, proceedings, claims, demands, costs, damages, and expenses, including attorney’s fees, by reason of any suit or action brought for any actual or alleged injury to or resulting from the performance of this contract. The contractor shall submit a full written report to the Contracting Officer within 24 hours following the occurrence of such damage, loss, or injury.

If due to fault, neglect, dishonesty of the contractor, his agency or employees, loss or damage to government property is incurred during the performance of this contract, the contractor shall be responsible for same. The government, at its option, may in lieu of repayment, require the contractor to replace at his own expense, all such property as directed by the Contracting Officer. Until the equipment is repaired or replaced, the contractor shall furnish similar, adequate replacement property and/or equipment at no charge to the government, within two working days of the date the equipment has been lost, stolen, or damaged.

VI. FACILITY SECURITY POLICY

Contractors attending meetings or accomplishing work within the buildings or real property of the National Park Service shall adhere to the security policy of each office. It shall be the responsibility of the contractor to contact the office before work begins for a briefing on security policies.

VII. WARRANTY

The contractor shall guarantee the workmanship against defects in work and material that might appear under extremely high visitor use and variable weather and climate conditions for a minimum of one year. The warranty period shall commence with final acceptance of work. This shall include all labor and parts at no additional cost to the government.

If during this warranty period, defective workmanship, materials, or equipment are identified by the government, the contractor will be notified, in writing, as to liability and responsibility for corrective action at no cost to the government.

Action may include but is not limited to:

A. Placing all work into satisfactory condition;

B. Making good all damages to equipment, the site, the building, or contents thereof, that have resulted from such unsatisfactory work; and

C. Making good any work, materials, or equipment that are disturbed in fulfilling the guarantee including any work, materials, or equipment that may have been guaranteed under another contract.Should the contractor fail to proceed with work in accordance with the guarantee within seven calendar days from the notice of corrective action(s), the government will have such work performed at the expense of the contractor.

In no event will the government be responsible for any extension or delays in the scheduled deliverables or periods of performance under this contract as a result of the contractor’s obligations to correct defects, nor shall there be any adjustment of the delivery schedule or period of performance as a result of the correction of defects unless provided by a supplemental agreement with adequate consideration.

The contractor shall be liable for the reasonable costs, including travel of personnel, and disassembly and reassembly of larger items when it is necessary to remove the work to be inspected and returned for correction or replacement.

Construction Site Visit – a site visit is scheduled for Wednesday July 21, 2021 at 12:00 Noon Eastern Daylight Time. Attendees will meet the NPS COR, Joshua Manley, at the Arrival Court of the Flight 93 Visitor Shelter, 892 Skyline Drive, Stoystown, PA 15563.

While attendance is not mandatory it is however strongly advised that prospective offerors attend this meeting in order to to familiarize themselves with the site.

FLIGHT 93 NATIONAL MEMORIAT

SOMERSET COUNTY, PA

VISITORS SHELTER FACADE REPAIRS

FLNI

PROJECT REPORT

NATIONAL PARK SERVICE

March 30,2O2L

NATIONAL

PARK

SERVICE

TABLE OF CONTENTS

1. Report t4

2. AppendixA: Construction Details

a. Figure 1: Original Roof Edge C,onstruction Detail ..5

b. Figure 2: Original Roof Plan

c. Figure 3: lnitial Roof Edge Repair Construction Detail 7

d. Figure 4: Roof Plan Fascia Repair Areas

e. Figure 5: Proposed Roof Edge Detail

f. Figure 5: Proposed C.oncrete Fascia Repair System ................ 10-11

3. Appendix B: Photographs

a. Photo(s) 1-8: Existing Fascia Conditions.. .............12-15

b. Photo(sl 9-10: Existing Roof and Gufter Conditions

4. Appendix C: Class B Cost Estimate.... .............17-21

Flight 93 National Memorial Visitors Shelter Fagade Repairs

March 30,Z:OZL lntroduction

The purpose of this report is to provide direction to the National Park Service (NPS) regarding damage to the existing concrete fascia at the Visitors Shelter at the Flight 93 National Memorial. This report will provide a description of the previous and existing conditions at this location and will provide recommendations for repairs to remediate the existing cond'rtions.

This reprt is based on:

1. Site visits to visually review existing conditions on September23,2020 and January 22,2021

2. The following documents were provided for review by the NPS: Construction Documents Dated 3/'19/13

3. Meeting with NPS and/or JGWA to determine repair intentions on September 15,2020, Septem ber 2 3, 202, January 22, 2021 and February 2, 2021 .

Orisinal Construction

The original roof system consisted of a concrete deck with tapered insulation and a pvc membnane roof sloping to an extemal pvc coated metal flashing terminated in a reglet with sealant (See Figure 1).

Construction Repairs

The original detailing and implementation of the roof edge construction (see Figure 1) at the Visitons Shelter was inadequate for this region with a significant number of freeze/thaw cycles. As a result, the roof edge failed and allowed water intrusion into the concrete fascia causing freeze/thaw cycles to cnack the concrete fascia in areas

As a result of this failure, an attempt was made a year or two after the initial construction to address this problem by incorporating a gutter system around the entire perimeter with two scupper dnains located at each end of the

Visitors Shelter (See Figure 2).

Existinq Conditions and Cause of Deterioration

Cunently there is a gutter system around the perimeter of the Visitor Shelter. This system did not work properly due to the gutter being installed flat and the sealant at the gutter joints and caulking at the base of the flashing separating

Flight 93 National Memorial Page 2 of 2L

Visitors Shelter Fagade Repairs March 3O,2O2I and pulling away from the gutterilints and flashing. lt should be noted that the detail specified a continuous gutter liner which was not installed. Otl^er deviations were also noted such as the membrane covering strip, reglet and nailer were not installed per the construction detail..

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Flight 93 National Memorial Visitors Shelter Fagade Repairs

March 30,202L t

Recommendations

Due to the failure of the gutter system also allowing the water to intrude into the concrete fascia, it is recommended that the gutter and flashing system be removed, repair the broken concrete fascia to match existing (approximately 13 SF) using Jahn M90 concrete repair system (Refer to Appendix A) and install new pressure treated wood blocking, new metal flashing/drip edge and splicing new membrane roofing to the existing roof edge per Sika Samafil "Samaclad" metal edge system (Refer to roof edge detail, Figure 5 in Appendix A).

Flight 93 National Memorial

Visitors Shelter Fa�ade Repairs

March 30, 2021

Appendix A- Construction Details

Flight 93 National Memorial Visitors Shelter Fagade Repairs

Appendices

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March 30,2O2L

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Flight 93 National Memorial Visitors Shelter Fagade Repairs

Figure 6

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Flight 93 National Memorial Visitors Shelter Fagade Repairs

March 30,2O2I

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Tt€ ned dep cf he apFeddt iswfEa CSP h6leflned he ?eanlB.d coet The Jdn nDrlar*Eld te rixodwhurderto fe <onilerryof ner glry ApptytteTlea.d &te/ codb the ddering ild s.Odde ryoxhddy 1€ irdl tick hForlatt-b afi€fle proFr bqlq fte'Feant hner' s!8r Brsr nof dyqlt trirbapdifin)nouafnMqbrF:l) Il6d when repairing lBrizmbl surtaces usirE Fmo Smootll tlc, eply material flush h tlB surface and lnish to a light steel tro{,el€d linish, noat or foom t0 acii€ve a texlured ef€d. Wh€n repairing verti€al surtaces using ffi90 Smooth VG, UiH up material beyond the surface of tt€ substrat€. TtB $Etirg perod befoe fnblirg uril vay. dep€nding LFon wnd, t€rnperatrq ard hmidy Aner actievirE irtials€|. scrape a lay eJicess morb urtl the €fed trdde b r€actl€d

Mn Snsth rEy be Fced h deep eccdins GiE $iccessie fts f a (efl€rl skh fiflns b€tileefi ef$cdins (the sirface ud @ear gbsy), soee ailay enolgh d ttp s{dace lo prno,e the d& (Ebqn tn6'd rder'd). Ttisd open fp pores b€fae er dfiirEl hler d rdedd b apded The sface stnid b rrxtderFd Aah bdcle cortirilhq the amrc€iin.

d*ing P€ricdicary misl M!tr!Smodh reFis usrg d€anrat€r fis d le6l a 72-hcu perird Ttle timhg fg ilitbl misling uril,rdy wih anbient omdusa. l-ld, {ry osr(ffidrs mry r€qJi€ mbw h 30 t0 O0 mhdes. C@ler. danp condlirE may reqdre \rydling s€r/€rd trcurs bef,te b€gfnirg the cltirg proc€ss. lfist s€verd tln€s a @. Shqld a€ess tc the r€pd3 be inpcalHe or€r a p€ritd ca tine. pbslic mqy be L6€d tc @r€r th€rn t€mptraty. Ttle Odi)dim d phstic, tffJe\rer, €h€s rrt rernore the rped tcr normd oriE technques.

Clan Up R€move unanred morbr from the perimeter of the repeir behre it dri€s usirg dean v€br and e nober sponge.

Re@t s€aeral lirp.s ulh clean r6ler to geverf a hab eltect (ddnirg of adiacent masonry). Clred mortar fiBy onv b€ r€moyed clEmically or rne€hanically.

Safe$ Requirernents ll is recommended tlEt safety $$les. gh\€s. ad a drst mask equbped \4ith P-2 filters (or €qui\,alent) be wcm for prol€c1hn while mixirE

Limilations . Do nol apply Jahn Motlarto a frozen or et€e€dngly hct subslrate. The applied rnorhr mud b€ ptoteded from €drem€ heal, fr€ezirg o(cessi\re witd, dir€ci sinhht, and rain. Ambi€ntlemperature rame $pdd b€ 40e Ftc gtr Fwiih lovrto a,rerage tumidity.

. Do notadd bording agentstc Jahn Aioriaror use them as surfac€ preprathn materials.

. Mrdmum tf&krcss of mortar sgdcdbn b 1U

Packaging and Coverage A 5{dHl d6tic pal cmtdrB approc 44 b d materEl.

Thb wil mver 0.5 crr t. (12 sq. ft. d 1/Z t]rickrcss].

Slorage And Shelf Life Sore materid in a dry ar€a auay from dred sur{ight Ambienl stcrag€ @ndlions slpuld be h the rangp of 4tr F tc gtr F r{th lofl to av€rage fumidity. A\terag€ shef lfe is six months h ori(:iEl, umperpd paclgrng.

Technical Data vulcf aNfoi9n I Y6l

Gcn ffiGlvl"tl ifr.ltrlrF ot clrstaiv Flrlrrilf..YFlli+fit.t[ erEGi$tl

Lipar caetficbnl ol thermal cr@alt*J.r

T€Gibsreftnil tsG ocndno sl'cnon. on Tste bendiF stemth- *t &nrcEsilemn dru Qnssa€slEmlfi Kl

TARI,€IIEDPHAS€

\&brne mb€d rrolEr M70 in hdrsf3sb Ofdruffit*bl

Fbt6 wilefidru mlefEl ulo,)t f,llsTEPHllSE lo ItDDfox-l 3Za io 37.6 1r3)b 145() ks {}()76 t6 O oaq

5.6E-06106.3846 h iElHof

1.15 !O i,!X) Br

IU() IC} IZQ FI

SO to 73O 6i 290oto 34OO Gi zlo{t !o 3600 Gt

12.O tl. oz,lb. lapD'rox)

.23 to 3_o fl_ oz /D-

Yllaming |,bl hr intemal consumptbn. Ke€p out of reaci of dldr€n ard arimals. CorEull Mat€tial SaEty Data Sheet (MSDSI br specific hformation.

llothe: The hfomafm onbrpd hereh is baged qr our o.m r€s€arch ard th€ resear€fi of dhers, srd it is pro/ited rddy as a servhe ?c t€b users. lt is betelred to b€ aurde to tlp best of ou knowHge. l-hursret, no gutrantee of ls accurey car be rBd€. ad il is not ht€rded tc lpwe as the b6is br determhirE this trodrcfs sdbbi[ty h afiy parlic'uhr $iluakrn. Fs lhis rcason, pwctra€rsae resporEiu€ tc md(e th€jroxln t€sts ald assume al risks associat€d uith using tls produd

0712015

G&rdret Stcee ko&ctr, hc. ?266 Park Circle Drive, Harnver Marlfand 21 076 (800)684-ts01 FA,\: (41 0) 782-9155 WEBSITE: uilrs,.cathedralsbne.@m

Flight 93 National Memorial Visitors Shelter Fagade Repairs

Appendix B - Photographs of Current Conditions

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Photo 1 - Typical fascia deterioration, approximate length of breakage 46"

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Photo 2 - Typical fascia deterioration, approximate length of breakage 42"

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Page 12 of 2l March 30,2OZl

Flight 93 National Memorial Visitors Shelter Fagade Repairs

Photo 3 - Typical fascia deterioration, approximate length of breakage 50"

Photo 4 - Typical fascia deterioration, approximate length of breakage 64"

Flight 93 National Memorial Visitors Shelter Fagade Repairs

March 30,202L

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Photo 5 - Typical fascia deterioration, approximate length of breakage 31"

Photo 6 - Typical fascia deterioration, approximate length of breakage 64"

Flight 93 National Memorial Visitors Shelter Fagade Repairs

Page 14 of 2I March 30,2027

7 4,{

Photo 7 -Typical fascia deterioration, approximate length of breakage BB"

Photo 8 - Typical fascia deterioration, approximate length of breakage 124"

Flight 93 National Memorial Visitors Shelter Fagade Repairs

March 30,2021

,,y' i,,i j' ' 4:

I

Flight 93 National Memorial Visitors Shelter Fagade Repairs

Photo 9 - Typical gutter at scupper drain

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Page 16 of 21, March 30,2O2I

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Photo 10 - Typical gutter at seam