A.07.24_SF30-Amend_0009.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is to:

1.) Updated Attachment A1- Project Description. See Sec 2. CONSTRAINTS AND OBJECTIVES; D.Infrastructure & Engineering Systems; b) Building Automation System (BAS); para Project objectives / Design expectations 1. Updated A1 attached herein.

P.O.C.. Alicia Moore 501-340-1262; alicia.m.moore@usace.army.mil

1. CONTRACT ID CODE PAGE OF PAGES

J 1 35

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 06-Nov-2015

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W9127S-15-R-6007

X 9B. DATED (SEE ITEM 11)

26-Jun-2015

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

06-Nov-2015

CODE

CONTRACTING DIVISION

USACE, LITTLE ROCK (W9127S)

700 W. CAPITOL AVE, RM 7315

LITTLE ROCK AR 72201-3225

W9127S 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9127S-15-R-6007

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF30 - CONTINUATION PAGE

The following have been added by full text:

UPDATED ATTACH A1-AMEND 09

BACKGROUND **Amend 0009**

Building 58 at Fort McNair, JBM‐HH, Washington DC was constructed in 1884 and is a contributing member of the eligible Fort McNair Historic District. It is individually eligible for the National Register of Historic Places (NRHP) Historical structure. The historical structure has approximately 7,814 square feet on three levels and a basement and currently serves as the Health Clinic for Fort McNair.

Building 58’s infrastructure is beyond its serviceable life. The facility does not meet current building / life safety codes and standards of delivering world class medical services. Efficient operation is hindered by the antiquated systems and lack of an elevator and ADA compliant facilities. Building 58’s failing infrastructure will continue to impact the health of the patients, staff, and visitors if not renovated. Building 58’s infrastructure and finishes must be replaced in order for the facility to continue its mission of a Health Clinic. Accreditation by the Joint Commission could be jeopardized for failing to meet environment of care standards if not renovated.

1. PROBLEM STATEMENT

MEDCOM requires services of a Design‐Build (DB) contractor for design and renovation of historical building 58 to include all labor, materials, and equipment necessary to repair the failing infrastructure that support the Health Clinic and meet current codes. Scope of work will include, architectural, mechanical, electrical, plumbing and life safety systems to such a condition that it may be effectively used for its designated functional purpose. Design will include planning and placement of all furniture and medical equipment and utility outlets. A separate Initial outfitting contract for building 58 will be awarded at a later date for procurement and installation of all LogCAT C items, Power, furniture and equipment (Refer Attachment D5 for details).

JBM‐HH is situated within the National Capital Region and is a Federal Military Installation (Refer Attachment F7 Bldg. 58 Historic Structure Report for details). As a consequence Building 58 renovation will be subject to NHPA Section 106 compliance to be conducted with the DC SHPO. Design‐Build designer of record will be required to provide documents and material support to meet submission requirements of these agencies. DB team’s Historic Preservation

Architect must have experience with secretary of interiors and 5 years’ experience in District of Columbia. The project schedule should incorporate time for obtaining approvals from federal and state agencies

Clinical operations in Building 58 must be maintained during the project. The Contractor will provide a Temporary Phasing Facility (TPF) for this purpose.

A turn‐key temporary phasing facility (TPF) will be provided by the Contractor during the renovation. The DB Contractor will be responsible for design, construction, setup, utility connections and removal of the TPF after medical clinic phasing and transition. Refer Attachment B – Drawings, for the site available for the TPF. The DB Contractor will move the existing furniture and medical equipment from Bldg. 58 to the TPF and storage. See Attachment D3 for detailed transition requirements. Final transition at the end of renovations will be by others. The TPF shall comply with UFC 1‐201‐01 “Non‐permanent DOD facilities. A PRCR and PFD for a TPF defining minimum requirements are provided. Refer to Attachment A3 Section 3.F. Temporary Phasing Facility for site, utility and building requirements pertinent to a TPF for transition.

2. CONSTRAINTS AND OBJECTIVES

The following outlines known conditions and constraints as well as design expectations and objectives specific to this project:

A. Site

a) Parking – Parking is located North and West of Building 58 and serves several buildings.

Bldg. 58 has a parking lot approximately 20 feet from the north façade. The basement walls are constructed with unreinforced masonry and extend a few feet above grade therefore 80’ stand off distance is required. Parking shortage at Fort McNair is acute, therefore loss of parking spaces to meet the required stand off distance is not possible. No parking is to be provided within the minimum stand off distance of 13 feet. A waiver is being pursued to allow retractable bollards that will come into place during high alert situations to limit parking within 80’ of the building instead of permanent 80’ stand off distance. The parking area shall be in compliance with the base design manual, ATFP and ABA

b) Provide compliant stairs into the building. A ramp is located at the rear entrance to the building. Contractor shall make any modifications necessary to provide an ABA compliant pathway from the accessible parking into the building.

c) Circulation ‐ Circulation will be restricted to the north and west of building 58. Most likely removable bollards will restrict all access other than fire access to the drive on the west side of building 58

d) Emergency Vehicle Access – Emergency Vehicle Access will be maintained from the north and south of the building. Fire access will be allowed within the drive lane to the west of the building

e) Logistics/Loading – There is currently a loading area with a drive that approaches building 58 from the southeast. This drive will need to be shortened or restricted as the end of the drive is within the 80’ standoff distance.

f) Site Utilities / metering – relocated building services as necessary to comply with building improvements on the north side of the site o Water 1.5” service located on the north side of the building 2” domestic service located on the west side of the building o Sewer 6” service on the north side of the building o Storm Roof drains will be reconnected as necessary o Gas Washington Gas to construct all improvements & coordinate with DPW

g) Storm Water Management – The Stormwater Management Plan will need to be executed within the provisions of the National Pollutant Discharge Elimination System (NPDES) enforced by the District Department of Environment and any applicable base design manual codes. Stormwater discharges from construction must be minimized by using erosion and sediment controls and protective barriers around disturbed land and stockpiles. All projects are subject to DDOE's soil erosion and sediment control regulations, except projects that disturb less than fifty (50) square feet. DDOE must review and approve soil erosion and sediment control plans before land disturbing activities take place. In addition to a soil erosion and sediment control plan, projects disturbing greater than 5,000 square feet of land must develop a stormwater pollution prevention plan (SWPPP), which must also be submitted to DDOE for review and approval before land disturbing activities take place. The JBM‐HH Environmental Management Division is responsible for making sure stormwater discharges from construction sites are minimized and/or as clean as possible. Any plans and/or permits must be submitted to EMD for review at least 30 days prior to submission to DDOE.

h) Landscaping – Landscaping will have to accommodate ATFP and the base design manual

i) Enclosures – Existing MEP Equipment and Trash Containers within the unobstructed space will be required to be provided with enclosures in accordance with UFC 4‐010‐01 section B‐1.2.3.

j) Environmental – NPDES guidelines will be followed

Site / Civil investigations required:

In order to properly determine the existing site conditions and the underlying issues that may be present, the contract shall perform a complete site topography and utilities survey.

Existing information regarding site topography and utilities provided in Attachment E is for information only.

B. Architectural

Architectural systems existing conditions

a) Building 58 Health Clinic is located in the historical district at Fort McNair. The building was constructed in 1884, with numerous interior renovations and one exterior addition.

Drawings of the original building are unavailable. Limited As‐Built drawings are available for window replacements and repairs to roof and building exterior and interior. The building is classified as existing business occupancy under life safety code NFPA 101 and is deficient in meeting exiting requirements. The building has three levels and a basement. The building has no elevator and does not meet ABA requirements for accessibility. Patient care spaces are limited to first floor only.

b) Building Exterior: Brick exterior has stains and some mortar joints have deteriorated.

Overall the brick exterior is in good condition. Stone Base is in good condition with some mortar missing in joints. There is an exterior steel fire ladder on front elevation. The stair is rusted and is recommended to be removed in the Historical report. Front entry porch column showed areas of rot and moisture damage. Lexan was added between columns and on side to provide protection from rain and snow. Lexan is scratched but does not draw attention from a distance.

c) Windows: Existing double hung wood clad windows with insulated glass were installed in 1983. Windows do not meet ATFP blast resistant criteria.

d) Building Interior: Lobby area has a mantle at the fire place. The fire place has been abandoned. Interior open stair in the middle of the building has wood construction. The railing does not meet current codes. Risers exceed 7” but are allowed for existing stairs per NFPA 101. The stair exceeds maximum allowable run of 12 feet between landings.

e) Roof: Upon a visual inspection of the exterior, the mansard slate roof appears to be in fair condition, but there is deteriorated wood in the roof framing, indicating leaks in the metal roof.

f) Basement: Mechanical room is not large enough for a new air handling unit to serve the building due to a brick column in the middle. Basement has a direct exit to the exterior.

Architectural investigations required:

DB contract shall perform an investigation of building exterior, interior partitions, mansard and metal roof to properly determine the existing conditions and the underlying issues that may be present prior to beginning design. All information provided in Attachment E is for information only.

Architectural Constraints Modification of the existing building exterior, windows and interior stair for the historical building 58 will require DC SHPO review and approval in coordination with JBM‐HH since it could result in an adverse effect determination.

Architectural objectives / Design expectations

a) Conceptual plans to meet the medical mission and Program for Design are included in

Attachment B. DB contractor is to provide a design solution that meets user needs, DC SHPO approval, high performance building criteria and energy performance of the building envelope.

b) Demolition of existing interior partitions and construction of new partitions shall be carefully coordinated to maintain structural integrity of the building.

c) Interior wood stair and wood flooring is considered a historic feature and is to be preserved. Stair railing does not seem to be original and does not meet code. Replace stair railing and balusters with new balusters to match original balusters on third floor.

Preserve wood mantle at fire place in the lobby. Maintain high ceilings as much as possible. Two arches on first floor at cased openings; one at the lobby, second at the rear entrance vestibule should be preserved. Provide new ceilings as needed to conceal ducts and pipes.

d) Building renovation will be designed and constructed to meet ABA requirements. If ABA required clearances around historic elements i.e. interior stairs cannot be achieved, a waiver for those requirements will be obtained from AHJ. Modification of existing interior stair could create an adverse effect determination.

e) Building Exterior: Addition of an elevator and a stair is proposed to be constructed on North side of building to meet ABA accessibility code and NFPA 101 life safety code. The elevator will be used for service, patients and staff. Exterior design of the addition must be reviewed and approved by NCPC and CFA. The review process is to be coordinated through

JBM‐HH Master Planning. Attachment B illustrates a concept design of the addition that has not been reviewed. Design‐Builder’s historic architect is responsible for proposing the design and materials for the stair / elevator addition that are compatible with existing historic building, preparing necessary documents for Section 106 process review and obtaining formal approval of exterior design. Scope of work for building exterior also includes repair of any failing or deteriorated conditions on the existing building exterior following the Secretary of the Interior’s Standards for the treatment of historic properties and appropriate National Park Service Preservation Briefs. Exterior repair includes cleaning exterior brick, repair of brick joints, Removal of exterior steel fire ladder on the front elevation, repair and seal anchor holes to match brick color.

Replacement of existing lexan sheet between columns at front porch with tempered glass in new framing or provide another solution for protection from rain and snow at the front entrance door. All exterior wood trims are to be cleaned and repainted.

f) DB Contractor is to propose Life safety upgrades and compliance to NFPA 101. The interior stair can be enclosed by rated construction to qualify as second exit. Waivers on some requirements for existing stairs to meet life safety code may be needed from AHJ and will be the responsibility of DOR.

g) Roof: Evaluate the condition of Mansard slate roof and repair as needed. Demolish metal roof and substrate down to roof framing. Demolish Lath and plaster ceiling located above the lay‐in grid ceiling attached to the roof framing. Inspect roof framing for deterioration and replace/repair as needed. Replace substrate and metal roof.

h) Interior finishes should follow UFC 4‐510‐01 and MEDCOM Interior Design standards document for quality.

i) Sustainability ‐ This project is required to meet UFC 1‐200‐02 High Performance and Sustainable Building Requirements. For certification requirements follow UFC 4‐510‐01 and current DOD sustainable Design and Development policy.

j) Logistics – The proposed elevator addition as part of the design solution is intended to provide logistics support to clinical areas on all floors. The elevator should be sized accordingly.

k) Historic Preservation – Building 58 is located in the historical district at Fort McNair.

Building renovation should follow Secretary of the Interior’s Standards for the treatment of historic properties and will be subject to NHPA Section 106 compliance to be conducted with the DC SHPO. JBM‐HH Environmental Management will conduct Section 106 consultation with the DC State Historic Preservation Office. The DC SHPO has purview over the interior and exterior of the building, any adverse effects determinations as a result of the project scope will be determined by the DC SHPO in coordination with JBM‐HH. DC SHPO is the coordinating agency for compliance with the National Historic Preservation Act (NHPA) Approval process of “no adverse effect” will require approx. one month. Approval process of “adverse effect” can take one year.

Design‐Build designer of record will be required to provide documents and material support to meet submission requirements of these agencies. The project schedule should incorporate time for compliance with federal and state agencies

l) Environmental / Hazardous Materials – Limited information is available regarding hazardous materials in Bldg. 58 and included in Attachment E6. Considering building’s age, the contractor should expect to encounter hazardous materials during demolition.

DB contractor shall provide hazardous materials survey, testing and abatement per EPA requirements in coordination with JBM‐HH Environmental Management department.

JBM‐HH contact for Lead and Asbestos abatement is Mark Luckers (703) 696 2012.

m) ATFP – Existing windows in Historic Building 58 are wood framed. Window replacement with laminated glass in steel or aluminum framing is not feasible on the interior of wood framed structure. Changes to exterior of the building will be an adverse effect under Section 106 historical structure review process. A waiver is being pursued from UFC 4‐010‐01 Standard 10.

Existing windows replacement is not required, however Anti‐fragmentation films are be provided at all existing window for protection from flying debris from windows. New stair/elevator addition is to be designed to comply with all ATFP requirements and Standard 10.

n) Communication/Electrical/Mechanical Rooms – The contractor shall place these rooms in areas that do not impede patient care or staff efficiencies. Test Fit plans show the location of these rooms in the basement. (Note: these rooms are NOT necessarily documented on the PFD. The proposed floor plan and technical solution drives their placement, configuration and outfitting).

C. Power, Furnishings, Equipment & Low Voltage Systems (PFE‐LVS)

a) Artwork – Artwork is not included in the scope of this contract and will be installed under IO&T contract.

b) Power/furnishings – Design‐Builder is responsible for planning the location of all furniture furnishings and equipment (FFE) and coordinating the location of all utility connections. Procurement and final placement of FFE will be done under a separate contract.

c) Casework/goods – See Attach D‐PFE‐LVS for types of casework/goods on this project.

d) Plants – MDG policy does not allow the use of live plants in the facility.

e) Medical Equipment – This MDG has specific standards for select medical equipment.

See Attach E, Apdx B – MDG Equipment.

f) Low Voltage Systems – Attach D‐PFE‐LVS has been edited to reflect the LVS applicable to this project.,

g) Public Relations ‐ The Contractor shall ensure all stakeholders found in Attachment I

PDT Distro Tab are represented during key public relations events to include Ground Breaking and Ribbon Cutting. This MTF (Medical Treatment Facility) has heavy representation by its Congressional District; therefore, high profile dignitaries may be included in all ground breaking and ribbon cutting events.

a) Logistics (transition/moves, procurement, delivery, installation, acceptance/ certification) ‐Attachment B‐Drawings illustrates the staging area available to the Contractor and outlines all parking, pedestrian, circulation, access and logistical considerations the Contractor shall take into account in the development of his price and solutions. These documents shall be used to plan transition/moves, procurement, delivery, installation, and acceptance/ certification. Existing parking facilities except those immediately on the west of Bldg. 58 within the project limits, shall not be utilized by construction personnel for parking or for other project purposes. Due to limited space and existing parking, the Contractor should expect to have to transport workers to and from the project to remote or off‐site parking facilities.

b) Low Voltage Systems – Attach D‐PFE‐LVS has been edited to reflect the LVS applicable to this project. The base standard for Electronic Security Systems (ESS), which includes Intrusion Detection & Duress systems in Medical Logistics, Mental Health and Pharmacy, is LENEL ES system (magnetic locks, etc.)/serviced/maintained by Intelligent Access Systems. The IDS/duress systems are serviced by ADT.

D. Infrastructure & Engineering Systems

a) Structural Systems Structural System existing conditions

1. Structural Framing: No structural drawings are available for Bldg. 58. As a result of limited access to inspect the structural elements on the elevated levels, a complete structural inspection was not possible.

2. Basement Framing: the basement ceiling is exposed. There are 2x10 floor joists at 12 inches on center with wood bridging as bracing. The basement framing appears is to be fair condition, considering the age of the building. There is minimum piping and conduit going through the floor joists.

3. Walls, Second and Third Floor Framing: A hard ceiling is attached to the underside of the floor framing, making it very difficult to inspect any of the framing on the 2nd and 3rd floors. The 2nd floor has lay in ceiling under the hard ceiling so not possible to observe if floor was sagging. Based on the existing floor and limited site inspection, the framing appears to span between exterior and interior load bearing walls. The interior load bearing walls are running east to west and make up the stair corridor. The interior load bearing walls appear to be constructed of wood studs.

The exterior walls are load bearing around the entire perimeter and consisted of stone and brick construction or brick with wood wall studs. It was not possible to determine the construction of the exterior walls.

4. Roof Framing: Limited access was obtained in certain areas where an opening in the hard ceiling was cut. Both locations have a double 2X6 wood sill member that has deteriorated at the windows in mansard roof on the east side of the building. It does not appear to be a loading bearing member because no other distress was found along that area.

5. Front entry porch column showed rotted areas with moisture damage.

6. Foundation: The stone walls around perimeter of basement are +/‐ 19” thick. The basement’s interior walls consist of brick construction. It was not possible to determine foundation type.

Structural investigations required

1. In order to properly determine the existing conditions of the building, and the underlying issues that may be present, a period of destructive investigation must be performed. A full investigation of the existing structural framing, floor framing and roof framing shall be performed prior to commencement of design.

2. In order to determine existing foundation conditions and foundations for new stairs/elevator, a geotechnical and foundation investigation (including test pits) shall be performed prior to design.

3. Any deteriorating wood that has been determined have structural integrity concerns shall be replaced.

Structural objectives / Design expectations

1. The intent of this project is to preserve the existing structure to the fullest extent possible while providing the necessary upgrades to ensure the structural integrity of the building.

2. Seismic Parameters: Risk/Occupancy Category II, Site Class D (Assumed no soils information provided), Seismic Spectral Response Coefficients SDS = 0.126, SD1 = 0.081, Seismic Design Category is B based off UFC 3‐310‐04 (ASCE 7‐10).

3. Construction of a new elevator and stair is proposed to be constructed on north side of the building. The new stair construction should be coordinated with the geotechnical investigation and final report. New stairs should be metal pan stairs.

Two steel columns will be required for framing purposes at the south end. The new elevator pit needs to be located to minimize the effect on the existing foundations at basement. Underpinning may be required so that the existing foundation will remain undisturbed.

4. The new addition will be structurally independent and will not be attached to the existing building. A building expansion joint will be required to separate the two buildings.

5. The existing interior stair is considered historically significant and therefore should remain. The stairs are to be enclosed as required by Life Safety code. Structural modification, if found necessary per investigation, need to be part of DC SHPO review.

6. Per the building code, any alteration that increase the seismic force in any existing structural element by more than 10% or decrease the strength of any existing structural element to resist seismic forces by more than 10% shall not be permitted unless the entire seismic force‐resisting system is determined to comply with the standard for a new structure.

7. Building 58 was not designed to resist any lateral forces. Therefore it is imperative that absolute minimal modifications are made to the exterior walls. It is assumed that the lateral stiffness of the building is achieved by the load bearing unreinforced masonry perimeter walls. Partial demolition of the roof ceiling will be required in order to determine the extent of the deteriorating wood members.

8. Progressive Collapse: UFC 4‐023‐03 requires that for major renovations, any portion that is three stories or more shall be designed to resist progressive collapse. Floors below grade will be considered a story if there is any space that is designed for human occupancy and that is equipped with means of egress as well as light and ventilation facilities that meet the local building code requirements. Historic Bldg. 58 is three stories with a basement. No information is available regarding the foundation system and basement walls are constructed with unreinforced masonry.

Three stories above basement are possibly wood framed structure with masonry veneer. Hardening or changing of structural system for this building is likely to be considered as adverse effect on historic elements of this building. Basement of this building will be used for storage and MEP systems with human occupancy only when these areas are accessed. User is pursuing a waiver from UFC 4‐023‐03 requirements for progressive collapse or due to the historic nature and limited human occupancy in the basement.

9. Hardening of Exterior: Bldg. 58 has a parking lot approximately 20 feet from the north façade. Loss of parking spaces to meet the required stand off distance is not possible. The basement wall constructed with unreinforced masonry is not completely underground and extends a few feet above grade therefore 80’ stand off distance is required. User is pursuing a waiver to hardening of exterior to meet ATFP requirements contractor is to provide retractable bollards that will come into place during high alert situations to limit parking within 80’ of the building instead of permanent bollards. New addition must be designed and constructed to meet all progressive collapse and ATFP requirements.

b) Building Automation System (BAS) Existing BAS condition Fort McNair does not have a base wide BAS system. Existing controls are electronic and do not provide adequate temperature control.

Project objectives / Design expectations

1. The BAS shall be a standalone Lonworks BACnet **Amend 09** based system that provides remote supervisory monitoring and control of the Direct Digital Control (DDC) system.

2. THE BAS consists of a high‐speed, peer‐to‐peer network of Building Controller(s) (BC), DDC controller(s), Web server(s), IP and an Operator Workstation laptop to comprise a complete Energy Monitoring and Control System (EMCS) for the facility.

3. Electronic controls will be utilized at all mechanical and plumbing equipment.

Examples are control dampers, control valves, and variable frequency drives.

4. The control system shall be web‐based and be provided with network card (IP) for status and monitoring. Controls features and monitoring points displayed locally at the equipment control panel shall be available through the BAS for monitoring, alarm, and reporting capabilities.

5. Individual room temperature controls shall be provided for all critical care area and sensitive equipment spaces.

6. Only rooms with similar load profiles and exposures may be served by a single zone with a maximum of 4 spaces per zone. All conference rooms and other rooms with unique load profiles shall be served as a single zone.

7. Temperature controllers shall maintain space temperature within plus or minus two degrees Fahrenheit of design set‐point.

8. The controls system shall be separate from the fire alarm system but provide monitoring of fire dampers and smoke dampers.

9. A point schedule drawing showing all DDC hardware is to be provided with schedules identifying minimum points to be monitored with range and input/output.

10. Provide electrically operated control valves, automatic dampers, airflow measuring devices, a static pressure sensor, chilled water flow meters, temperature, and pressure sensors as required to address sequences of operations.

11. Monitoring of electrical metering shall be integrated into the BAS system.

c) Mechanical Systems

Mechanical System existing conditions

1. The existing system provides heating and air conditioning to the building by a two pipe change over fan coil unit system. The basement has horizontal fan coil units with no connection to outside air. The upper three floors are conditioned by vertical fan coil units with outside air louvers. Outside air louvers only provide outside air to the first, second, and third floor. A district heating water and district chilled water system is routed to the building. A single circulating pump located in the basement of Building 58 provides heating water to cooling water with manual change over valves. The fan coil units have exterior louvers to provide outside air to the building.

Many of the louvers are blanked off. The building is exhaust by three exhaust fans located on the exterior of the building.

2. Chilled Water System: The chilled water plant is located in building 34 and is operated by PEPCO. The system contains a Trane Chiller paired with a BAC cooling tower. A pair of Paco base mounted end suction pumps for the condenser water and a pair of Paco base mounted end suction pumps for the chilled water system. A plate and frame heat exchanger provides “free cooling.”

3. Heating Water System: The heating water plant is located in the basement of Building #50 and is comprised of two (2) Lochinvar condensing boilers. The heating water is routed underground to building #54 and then through the tunnel to building #58.

4. Abandoned Equipment: A heat exchanger with piping serving the exchanger and routed to serve building #56 has been abandoned in place.

Mechanical capacity and investigations required

1. The existing capacity of the chilled water and heating water systems should be determined such that the load from the addition of building 58 does not overload the existing systems.

2. Heating and Cooling Capacities: Using the latest editions of the ASHRAE Handbook of Fundamentals, the Designer of Record (DOR) shall provide computerized calculations showing computation of the cooling and heating capacities of each space. The DOR shall coordinate with project specifics to obtain equipment load, exhaust air volume, pressurization requirements to establish the cooling and heating capacities.

3. Calculation Details: Show the following calculations print outs, Room‐By‐Room Peak Cooling and Heating Loads, Room‐By‐Room Air Balance sheets, showing supply, return, exhaust, and return values, Zone cooling and heating loads, Psychometric Analysis

Mechanical system design expectations

1. The intent of the mechanical systems scope of work for this project is to provide new energy efficient mechanical systems for the building 58. The existing building mechanical systems have exceeded their life expectancy and shall be completely removed.

2. The existing fan coil units shall be demolished along with all piping and accessories.

The exterior louvers shall be blanked off with insulated metal panels on the interior and abandoned in place.

3. The two pipe change over system including pump, piping thorough out building, and accessories shall be demolished completely.

4. The three exterior exhaust fans shall be demolished from the building. All ducts, grilles, and accessories for the exhaust system shall be removed completely.

5. The abandoned heat exchanger, piping for the heat exchanger, and piping serving building #56 shall be demolished in its entirety. Building #56 has a standalone system and no longer needs connection to the mechanical system in building #58.

6. The chilled water and heater water from the central plants shall be demolished as necessary for connection to serve the new systems.

7. General HVAC Design ‐ The primary consideration of the HVAC design is to provide the environmental conditions required to meet the functional requirements. Provide a complete Indoor Air Quality (IAQ) analysis per UFC 3‐410‐01FA. The narrative shall summarize how the decisions of design affect individual rooms by including a room‐ by‐room breakdown of number of occupants, ventilation (CFM) requirements, and other IAQ items. Where ventilation rates are significantly higher than required, review design alternates to reduce life cycle cost. Outside air will be introduced into the building to meet all requirements for AT/FP and applicable outside air flow rate requirements. The new mechanical systems, and their air intakes, should be designed such they are not encumbered by the existing DVP owned optional standby generator nearby the building. An engineering analysis should be performed to ensure no issues will be present. Computational fluid dynamics or a wind tunnel test may not be the most effective means for execution, but it remains with the design‐ build contractor for proper system design. The bottom of outside air intake shall be as high as practical, but not less than the distance above ground level required by UFC 4‐01‐001, or if installed above the roof, at least 3 feet above roof level. The outside air intake shall be at a minimum 30’ from all exhaust outlets, generator exhaust, and plumbing vents. The DOR shall consider wind direction and velocity, building geometry, other building proximity, and characteristics of the contaminant stream to avoid contamination of the outdoor air serving the building. Appropriate considerations shall be provided to prevailing wind direction and the season;

however the DOR should not rely on prevailing wind direction as a primary factor in avoidance of intake contamination. When appropriate, DOR shall consider all factors to determine the correct location of outside air intakes per UFC 4‐510‐01.

8. Contractor is to provide an energy efficient mechanical system to meet LEED Silver that connects to the existing chilled and heating water system. Consider the following options for the HVAC system and propose a system based on Life cycle cost analysis:

i. All‐Air Systems with a central air handling unit to meet clinical requirements and energy efficiency requirements while not interrupting the historical features of the building. Energy recovery shall be installed as justified by the LCCA. Spaces with similar load profile may be grouped into a maximum of 4 spaces per zone.

Perimeter spaces with similar load profile and exposure may be grouped into a maximum of 3 spaces per zone. Individual room control is required for to following rooms; Conference Room, Entrance Lobby and Data Room

ii. Variable Air Volume (VAV) with terminal re‐heat. An air handling unit with cooling and heating coil shall provide conditioned air to terminal boxes. The air handling unit shall be custom build up to be installed in the building around existing structure. The spaces shall be zoned to provide conditioned air to spaces with similar load profiles. The terminal boxes shall be pressure independent and provide reheat with hydronic coils. A single terminal box shall not exceed 1,500

CFM.

iii. Chilled Beam with a dedicated outdoor air unit. The dedicated outdoor air unit shall use plant chilled water and plant heating water to provide medium pressure air to the chilled beams. The air handling unit shall be custom build up to be installed in the building around existing structure. A two pipe chilled beam system with heating water duct coils shall provide individual space control. The duct coils shall be zoned to provide additional heating to perimeter spaces with similar load profiles.

9. Air distribution systems shall be installed for ease of balancing the system. Exhaust for restrooms and other auxiliary requirements shall be provide by a fan interior to the building with a louver to exhaust to the exterior space. An isolation room with an attached restroom facility will be designed for negative pressure per the UFC with the ability to turn off the air pressure monitor. When the air pressure monitor is off, the door may be left open to the corridor without creating alarms.

10. Duct Material ‐ Ductwork, casings, and accessories (i.e. volume dampers, turning vanes, elbows) shall be fabricated from galvanized sheet steel, ASTM A527, coating G90. As on optional material aluminum sheet complying with ASTM B209, allow 1100, 3003, or 5052 can be used. For special exhaust systems serving fume hoods and biological safety cabinets, use welded stainless steel (ASTM A167, Class 302 or 304). Use of fiberglass ducts, concrete ducts, and underground ducts is not permitted.

11. Exhaust/Relief ‐ Exhaust fans shall serve, janitor closets, soiled Utility, break rooms, toilet exhaust and other specific exhaust applications through the building. An exhaust fan shall be located exterior of the building but not visible near the west façade to exhaust the Isolation room and associated restroom. The exhaust fan shall run continuously to maintain negative pressurization in relationship to the adjacent room.

12. Refrigerant Systems ‐ Provide ARI certified, air‐cooled refrigeration units. Use EPA approved refrigerants (HFC‐134a, HFC‐410a, or HCFC‐123). Use of HCFC‐22 is not permitted.

13. Chilled Water System ‐ Provide a fully functional cooling system complete with circulating pump and insulated piping connected to chilled water supply and return serving multiple buildings. The cooling water system, from the existing chillers, shall be connected to in the basement and distributed throughout the building by the means of a variable primary distribution system with a new pump dedicated to serve Building 58. Provide 2‐way modulating control valves to vary flow at part‐load conditions. Provide variable speed drives for cooling water circulating pumps sized larger than 5.0 hp Chilled water supply (CWS) temperature supply is 42⁰F and chilled water return (CWR) is between 52⁰F and 54⁰F. Connect CWS and CWR with isolation valves where the 4” CWS and CWR enter the building from the tunnel. Chilled water coils shall have a maximum velocity of 500 feet per minute. All coils in excess of 6 rows shall be horizontal split to facilitate cooling. Drain pains under chilled water coils shall be double sloped and stainless steel.

14. Heating Water System ‐ Provide a fully functional heating system complete with circulating pump and insulated piping connected to heating water supply and return serving multiple buildings. The heating water system, from the existing condensing boilers, shall be connected to in the basement and distributed throughout the building by the means of a variable primary distribution system with a new pump dedicated to serve building #58. Provide 2‐way modulating control valves to very flow at part‐load conditions. Provide variable speed drives for heating water circulating pumps sized larger than 5.0 hp. Heating water supply (HWS) is provided at 180 ⁰F and heating water return (HWR) is 160 ⁰F.

15. Piping Systems ‐ Piping systems shall be installed for ease of balancing the system.

Pipe Sizing: Select pipe sizes based on the ASHRAE recommendations and the need to provide an energy‐efficient design. The use of PEX, PVC, or CPVC is prohibited on this project.

16. Piping Connections

i. Shutoff‐Duty Valves

1. Provide shutoff‐duty valves to isolate each piece of equipment for isolation, service, and/or replacement.

2. Provide shutoff‐duty valves at each branch connection to supply mains.

3. Provide shutoff‐duty valves on each side of control valves.

4. Provide drain lines at low points and air vents at high points.

ii. Strainers ‐ Provide in‐line strainers to protect equipment, such as cooling and heating coils, Provide in‐line strainers to protect control valves. Provide in‐line strainers to protect pumps.

iii. Check Valves ‐ Provide non slamming check valves on the pump discharge.

iv. Flexible Connectors‐ Provide flexible connections at the pump inlet and outlet connections.

v. Instruments‐ Provide pressure gauges and thermometer at the pumps, coils, and equipment requiring measurements of the pressures and temperatures.

17. Heating and Air Conditioning Systems – Miscellaneous Areas. Provide dedicated and thermostatically‐controlled air‐conditioning systems for the critical space identified below

i. Elevator Machine Room: The inside design temperature and range shall be based on the manufacturer’s recommendations.

ii. Data Room: The design conditions shall be 64 ⁰F to 75 ⁰F dry bulb temperature and 30 to 55% relative humidity.

iii. Mechanical rooms with major equipment shall be designed to maintain temperatures within 9.9⁰F of summer ambient design temperature. However if the equipment room has temperature‐sensitive electronic components, such as microprocessor based controls and electronic circuit breakers, the DOR shall design the space to maintain the temperatures recommended by the manufacturer.

iv. Provide thermostatically controlled terminal heating devices for vestibule, Exterior Stairs, Exit doors to the outside, and Toilets.

18. All modification to the exterior of the building shall maintain the historical integrity of the building.

d) Plumbing Systems Plumbing system existing condition

1. Domestic Cold Water: A 1‐1/2” domestic water pipe enters the building on the service located on west side of the building and is routed through a reduced pressure zone back flow preventer with a relief pipe routed to the sump pump. The existing domestic water is not metered at the building.

2. Domestic Hot Water: A 2” domestic water enters the building from the west side of the building through a reduced pressure zone back flow preventer with a relief pipe routed to sanitary. After the back flow preventer, the 2” water serves the water heater and is then routed through the building to the fixtures. A water softener conditions the water before it enters the domestic water heater.

3. Fixtures: The plumbing fixtures are not low flow and do not meet ADA requirements.

The water closets are tank type.

4. Gas System Low pressure ¾” gas steel pipe enters the building on the north side and provides gas for the domestic water heater. The gas is metered at the chilled water plant.

5. Sanitary: The existing sanitary in the building is cast iron hub and spigot. An existing 6” cast iron hub and spigot sanitary drain is routed near the exterior west wall and just north of the exterior doorway under the basement on the east side of the building routed to the north. A sump pump is located in the east side of the building to collect the relief from the backflow preventer, relief from the domestic hot water tank, and condensate of portable dehumidifiers. There are no floor drains located in the basement. The sanitary is then pumped overhead to the existing sanitary line existing the building under the basement on the west side of the building.

Plumbing capacity investigations required

1. Prior to design, a fire hydrant flow test shall be performed.

2. A pressure test of the natural gas to building 58 shall be performed prior to design.

3. Medical Gas is not required or requested.

4. A water hardness test shall be conducted to size the water softener.

Plumbing systems / Design expectations

1. The intent of the plumbing systems scope is to provide a new energy efficient plumbing system for building 58:

2. The existing domestic cold water system shall be removed. The piping, valves, backflow preventers, pipe hangers and all accessories shall be removed in their entirety to prepare for the new domestic cold water system.

3. The existing domestic hot water system shall be removed back to the 2” back flow preventer. All piping, valves, pipe hangars, water heater, softener, and all accessories shall be removed in their entirety to prepare for the new domestic hot water system.

4. The existing plumbing fixtures within the building shall be demolished completely.

5. The wall hydrants shall be removed with the openings enlarged for wall hydrant boxes.

6. The low pressure gas system shall be removed to outside of the building to provide access for the new building addition.

7. Remove the sump pump completely. The pit shall remain for a new sump pump.

8. The owner has first right of refusal for the water softener and domestic water heater.

9. Water Distribution System ‐ Provide a system with valves to allow maintenance and replacement of water heater, water softener, and fixtures. Size the piping for the hot and cold water systems per criteria in the IPC including backflow preventers, water hammer arrestors, and trap primers. Minimum domestic hot and cold water shall be ¾”.

10. Piping Accessories

i. Shutoff‐Duty Valves

1. Provide shutoff‐duty valves to isolate each piece of equipment for isolation, service, and/or replacement.

2. Provide shutoff‐duty valves at each branch connection to supply mains.

3. Provide shutoff‐duty valves at each plumbing fixture.

ii. Strainers

1. Provide in‐line strainers to protect equipment, such as cooling and heating coils.

2. Provide in‐line strainers to protect control valves.

iii. Check Valves ‐ Provide non slamming check valves on the pump discharge.

iv. Flexible Connectors Provide flexible connections at the pump inlet and outlet connections.

v. Hot‐Water Circulating Balancing Valve Provide a balancing hot water valve to modulate at the end of any hot water pipe to maintain hot water to every fixture with‐in 10 seconds.

vi. Instruments ‐ Provide pressure gauges and thermometer at the pump and equipment requiring measurements of the pressures and temperatures.

vii. The use of PEX, PVC, or CPVC is prohibited on this project

11. A new domestic cold waters system shall be installed within the building sized per

IPC to accommodate all plumbing fixtures. A new backflow preventer shall be installed from the west side of the building. The new domestic cold water system shall be sized for all water flow connections.

12. Refer to Attachment E9 for Hydrant Flow Test performed on 5/11/2014 to calculate pipe size to provide manufacturer’s recommend pressure. If the water pressure is to low based on the designer of record calculations, a water pressure booster pump system may be necessary to meet the pressure requirements of the low‐flow plumbing fixtures.

13. Domestic Hot Water System ‐ A new domestic hot water shall be installed with…