Notice to Respondents: Request for Proposal WCSD-25-045 Building Envelope Commissioning (BECx) Services
| Location: | Iowa |
|---|---|
| Posted: | Mar 24, 2026 |
| Due: | Apr 8, 2026 |
| Agency: | Waukee Community School District |
| Type of Government: | State & Local |
| Category: |
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| Publication URL: | To access bid details, please log in. |
Notice to Respondents: Request for Proposal WCSD-25-045 Building Envelope Commissioning (BECx) Services
More Details
Bid Deadline:
April 8 2026 at 2:00 PM CST
April 8 2026 at 2:00 PM CST
More Details
Request for Proposal
This Request for Proposal (RFP) is being issued to solicit proposals from qualified, independent commissioning firms to provide professional commissioning services for Building Envelope Commissioning Services for the Waukee Community School District (Waukee CSD).
Request for Proposal Schedule
| Request for Proposal Schedule | |
| Event Open | 03/24/2026 10:00 AM |
| Question Submission Date | 03/31/2026 2:00 PM |
| Event Close | 04/08/2026 2:00 PM |
| Notice of Intent to Award issued | 04/9/26/2026 |
| Board Notification and Approval | 04/13/2026 6:00 PM |
| Review of 75% Design Documents | April 14, 2026-May 8, 2026 |
| Construction- Phase 1 | June 2026-October 2027 |
| Construction- Phase 2 | Feb 2028-December 2028 |
| 10 Month Review- Phase 1 | August 2028 |
| 10 Month Review- Phase 2 | October 2029 |
Questions and Answers
All questions regarding this solicitation shall be received via email to jjanssen@waukeeschools.org . The Waukee CSD will provide responses to those questions deemed appropriate at https://www.waukeeschools.org/Waukee Community School District/departments/business-services/notice-to-Respondents-rfp-rfq. Answers will not be provided on an individual basis.
Communication
Until a notice of intent is awarded, the sole point of contact for this proposal opportunity will be the Issuing Officer from the date of issuance until intent to award is issued to the successful Respondent.
Issuing Officer:
Julie Janssen, Purchasing Agent
Waukee Community School District
District Administration Office
560 SE University Ave., Waukee, IA 50263
jjanssen@waukeeschools.org
NOTE: Large files delivered via email may be spammed. Please confirm receipt of any digital files.
Proposal Submission:
Proposals are due April 08, 2026 at 2:00 PM CST . Proposals shall be submitted electronically via email to jjanssen@waukeeschools.org as outlined below, prior to the proposal deadline.
Attachment Preview
WAUKEE COMMUNITY SCHOOL DISTRICT
DISTRICT OFFICE RENOVATION AND ADDITIONS
MEPT DESIGN DEVELOPMENT NARRATIVE
February 26, 2026
Division 21 Fire Suppression
Proposed System(s):
The building has an existing 6” fire service water entrance, downsized to a 4” fire service after entering the building, at the West
mechanical closet. All underground and all associated fire suppression piping and fire hose cabinets shall be demolished. The 4”
fire service shall be demolished within the West mechanical closet, back to the 6” fire service entrance. The 6” fire entrance
located at the West mechanical closet shall remain and additional zones shall be added to cover areas of new work and renovation
where fire sprinkler system does not currently exist. Existing sprinkler coverage of the existing building shall remain, and sprinkler
heads and branch piping shall be relocated as required to conform to new floor plans. The overall sprinkler system will consist of
the following components:
1. Existing exterior post indicator valve.
2. New double check detector assembly (DCDA) with flow switches and tamper/supervisory valves.
3. Existing exterior Siamese fire department connection (FDC).
4. New exterior alarm device in the event a flow switch is activated.
5. New individual zone valves with supervisory switches and drain valves.
The sprinkler main will be sized for light hazard occupancy. The maximum coverage area for any single sprinkler zone is 52,000
square feet. Due to the overall size of the building, the wet sprinkler system will be divided into three (3) wet sprinkler zones for
interior spaces. There are no dry sprinkler zones anticipated for this project.
A single-interlock preaction fire sprinkler system shall be provided to protect the SCC room. The preaction system shall be
supervised and arranged so that water is not introduced into the piping until both detection system activation and sprinkler head
operation occur in accordance with NFPA 13 and NFPA 72 requirements. Detection devices within the room shall initiate the
opening of the preaction valve upon confirmed fire conditions.
The sprinklers in the spaces with acoustical ceiling tile will be concealed type sprinkler heads, with ordinary temperature sprinkler
heads. All sprinkler heads in exposed areas will be upright type. Sprinklers shall be coordinated with architect based on ceiling type
and owner preference.
Wet sprinkler piping (2”and smaller) shall be Schedule 40 black steel with threaded fittings. Wet sprinkler piping (2-1/2” and
larger) shall be Schedule 10 black steel with flanged or grooved fittings.
WWW.MODUS-ENG.COM
WATERLOO
214 East 4th St.
Waterloo, IA 50703
TEL 319.235.0650
DES MOINES
130 East 3rd St. Ste. 300
Des Moines, IA 50309
TEL 515.251.7280
Page 1 of 16
IOWA CITY
118 East College St. Ste. 200
Iowa City, IA 52240
TEL 319.248.4600
Division 22 Plumbing
Proposed System(s):
Domestic Water
The building has one existing water service entrance, a 2” domestic entrance at the West mechanical room. The existing 2” water
service entrance shall be demolished and replaced with a 3” domestic water service entrance. Existing 2” water main, 2” double
gate, and double check assembly shall be demolished and new 3” main, valves, water meter, and flood protection valve, and 3”
Reduced Pressure Zone (RPZ) type backflow preventer shall be provided.
A water softener will be provided within a storage room near the water entry closet, Mech C103. Building piping shall be labeled
as hot water (HW), cold water (CW), soft cold water (SCW), and hot water recirculation (HWC). It is understood that all hot
water shall be soft and any new cold water piping will be soft within the existing and addition portions of the project.
The existing building has two standalone domestic hot water systems. One hot water system is provided at the West end of the
existing building, and another domestic hot water system is provided at the East custodial room of the existing building. The
domestic hot water heaters, circulation pumps, and associated accessories at the West and East ends of the existing building will be
demolished. A new water heater and its associated circulation pump sand accessories will be provided for each system, serving new
fixtures. Additionally, a single new water heater shall be provided to serve the new building addition. New recirculation pumps,
hot water piping and hot water recirculation piping will need to be provided with the new water heaters. Each public restroom
lavatory will be provided with an ASSE 1070 thermostatic mixing valves to reduce the temperature to 105F at the outlet.
It is assumed that all existing plumbing fixtures will be replaced with new fixtures. Plumbing fixtures will be coordinated with the
Owner’s Facility team with a goal of cohesiveness throughout the building.
Basis of Design Plumbing Fixtures:
Water Closets – American Standard
Water Closet Flush Valves – Automatic battery type, Sloan
Urinals – American Standard
Urinal Flush Valves – Automatic battery type, Sloan
Wash Fountains – Bradley Verge
Wall Mounted Lavatories – Kohler Kingston
Electric Water Coolers – Elkay Bi-Level with electric bottle fill station
Janitorial Sink – Fiat molded stone
Emergency Shower/Eye Wash – Haws
Exterior frost proof hose-bibbs in lockable enclosures shall be provided at 50-100 feet intervals on all new exterior walls.
The domestic water piping material shall be Type L hard copper tubing or 304 stainless steel for the mains and inside the water
service entrance room. Underground water shall be Type K copper. Drops to individual plumbing fixtures shall be Type L tubing.
Sanitary
Sanitary drainage for all addition shall be gravity drained and drained to the sanitary sewer on site. All locations will be
coordinated with the civil engineer. At this time, it is assumed that the existing sanitary services and below grade sanitary piping in
renovation areas are in usable condition. Modus recommends that the owner has the existing sanitary piping scoped during
Design Development to verify condition of below grade piping.
A single new 4” sanitary drainage connection to the site shall be provided for the new building addition. All fixtures located within
the new building addition that do not require routing to the grease interceptor shall route to the new 4” sanitary drainage
connection. The 4” sanitary drainage connection shall be coordinated with the civil engineer for invert elevation and location at a
point of five feet beyond the building exterior.
WWW.MODUS-ENG.COM
WATERLOO
214 East 4th St.
Waterloo, IA 50703
TEL 319.235.0650
DES MOINES
130 East 3rd St. Ste. 300
Des Moines, IA 50309
TEL 515.251.7280
Page 2 of 16
IOWA CITY
118 East College St. Ste. 200
Iowa City, IA 52240
TEL 319.248.4600
A new grease interceptor shall be provided and located within the new parking lot, East of the building addition. The interceptor
shall be accessible through traffic rated man holes at grade. Fixtures provided at kitchens and kitchenettes throughout the building
addition shall route sanitary drainage through the new grease interceptor. Location of the grease interceptor shall be coordinated
with the civil engineer for location within the new parking lot.
All water closets in public restrooms or single occupant restrooms shall be wall mounted water closets with flush valves. All urinals
shall be wall mounted low flow washout type with flush valves. Each restroom shall be provided with at least one floor drain for
spill protection and mop cleaning. All new floor drains will be provided with trap primers to meet the requirements of the 2021
Uniform Plumbing Code. Lavatories shall be wall-mounted with floor mounted carriers, with larger restrooms using wash
fountains as shown on floor plans.
An elevator sump pump is required and shall be provided for the new elevator located within the building addition. Pumped
discharge from the elevator sump pump shall daylight at the building exterior with a gooseneck down.
All sanitary drain piping below grade shall be Schedule 40 PVC or cast iron. All above grade sanitary and vent piping shall be cast
iron. All grease sanitary for the kitchen shall be epoxy coated cast iron. Where sanitary drain piping and vent piping are expected
to be routed in a return air plenum, the sanitary lines shall be fully insulated cast iron.
Storm
The building will be drained via internal roof drains. All storm drain piping and storm overflow shall be cast iron, and gravity
drained. Storm drain piping in a return air plenum will be cast iron. All horizontal storm drain piping, and piping with 10 feet of
the exterior shall be insulated to prevent sweating.
At this time, it is assumed that the existing storm services and below grade storm piping in renovation areas are in usable
condition. Various locations of storm piping will require rerouting within the renovation areas to match the latest floor plans.
Modus recommends that the owner has the existing storm piping scoped during Design Development to verify condition of
below grade piping.
Natural Gas
The existing natural gas meter and piping on the east façade will be demolished. All existing natural gas piping will be removed. A
2 PSI natural gas service will be provided at the North side of the building addition. The 2 PSI natural gas line will be provided
with a PRV set to 14 in w.c. immediately following the building gas meter. The gas line will be routed above ceiling in the
corridors, or on the roof, and shall serve the water heaters and boilers. The 14 in w.c. natural gas line shall be regulated down to 8-
10 in w.c. at each of the appliances with a vented regulator per code.
An emergency gas solenoid valve with manual isolation and bypass shall be installed for the water heater and boiler rooms. The gas
solenoid shutoff valve shall close upon activation from an emergency stop push button.
Natural gas piping shall be schedule 40 black iron pipe with welded fittings for gas pressures above 1 psi. Threaded is allowed for
pressures below 1 psi. All exterior natural gas piping shall be painted with 2 coats of rust-resistant paint.
Insulation
Plumbing piping will be insulated as follows:
- Cold Water: 1” fiberglass
- Hot Water and Recirculation (Less than 1-½"): 1” fiberglass
- Hot Water and Recirculation (1-½" and over): 1-½" fiberglass
- Vent within 10’ of Exterior: 1” fiberglass
- Storm within 10’ of Exterior: 1” fiberglass
WWW.MODUS-ENG.COM
WATERLOO
214 East 4th St.
Waterloo, IA 50703
TEL 319.235.0650
DES MOINES
130 East 3rd St. Ste. 300
Des Moines, IA 50309
TEL 515.251.7280
Page 3 of 16
IOWA CITY
118 East College St. Ste. 200
Iowa City, IA 52240
TEL 319.248.4600
Division 23 Mechanical
Proposed System(s):
Air Side Systems
Existing RTU-1
• The existing building is served by an existing Daikin multi-zone VAV rooftop unit (MZVAV RTU)
with direct expansion (DX) cooling and indirect gas-fired heating. This unit will remain in place. The
unit was installed in 2018 and is less than halfway through its expected life.
• All existing variable air volume (VAV) terminal units will be removed and replaced with new units to
accommodate the new building programming. The existing boiler plant equipment and heating water
piping will be removed. The new VAVs will be served by the new boiler plant located in the new
addition, and new heating water piping will be provided. The existing ductwork may be reused where
practical.
RTU-2
• A small new gas/DX MZVAV RTU will be provided to serve the workstations and offices in the
southeast corner of the existing building (existing board room location). Serving this area from a
dedicated unit will allow the existing unit to accommodate the increased occupant load of the new
building programming. The basis of design is a Daikin Rebel, which has double wall cabinet
construction.
AHU-1
• The seminar room at the northwest corner of the addition will be served by a dedicated single-zone
VAV air handling unit (SZVAV AHU). The AHU will be located in the mechanical mezzanine. The
AHU will have double wall cabinet construction, variable speed supply fan(s), variable speed exhaust
fan(s), economizer, hydronic cooling coils, and a hydronic heating coil. The basis of design is Daikin.
AHU-2
• The portion of the new addition west of the welcome center (except for the seminar room) will be
served by a MZVAV AHU. The AHU will be located in the mechanical mezzanine. The AHU will
have double wall cabinet construction, variable speed supply fan(s), variable speed return fan(s),
economizer, hydronic cooling coils, and a hydronic heating coil. The basis of design is Daikin.
AHU-3
• The portion of the new addition east of the welcome center will be served by a MZVAV AHU similar
to AHU-2. The AHU will be located in the mechanical room on the upper level.
Areas served by multi-zone units (RTU-2, AHU-2 and AHU-3) will be zoned to provide independent
temperature control for different spaces. Each zone will be served by a VAV terminal unit with a hydronic
reheat coil and a dedicated thermostat. The basis of design is Titus. Zoning and thermostat locations will follow
the diagram previously reviewed and approved by the district.
Rooftop exhaust fans will serve restrooms and kitchen areas. The basis of design is Greenheck.
Ductless split cooling/heating systems will serve electrical, data, and A/V rooms. Air-cooled condensing units
will be located on the roof. The basis of design is Daikin.
A ductless split cooling/heating system will provide backup conditioning for the Security Control Center in the
event of a power outage. The air-cooled condensing unit will be located on the roof. The basis of design is
Daikin. The system will be backed up by the generator and enabled/disabled by a wall switch.
WWW.MODUS-ENG.COM
WATERLOO
214 East 4th St.
Waterloo, IA 50703
TEL 319.235.0650
DES MOINES
130 East 3rd St. Ste. 300
Des Moines, IA 50309
TEL 515.251.7280
Page 4 of 16
IOWA CITY
118 East College St. Ste. 200
Iowa City, IA 52240
TEL 319.248.4600
Grilles and diffusers are planned as follows, with Titus as basis of design:
- Ceiling supply – Square plaque or linear slots
- Ceiling return/exhaust – perforated
- Sidewall supply or return – single blade
- Areas with exposed spiral ductwork – saddle taps with damper and bladed grille
Electric cabinet unit heaters shall provide supplemental heating in vestibules. The basis of design is Indeeco WAI.
Ductwork shall be insulated as follows:
- Supply: 1-½" fiberglass wrap, or 2” rigid fiberglass in mechanical rooms
- Return: uninsulated
- Outside Air: 2" rigid fiberglass
- Exhaust Air within 10’ of Exterior: 1-½" fiberglass wrap, or 2” rigid fiberglass in mechanical rooms
- Boiler and Water Heater Flue and Intake: 2” fiberglass
Hydronic Systems
Chilled water plant
• A chilled water plant will serve AHU-1, AHU-2, and AHU-3 cooling coils.
• There will be a single chiller located on the roof east of the mechanical mezzanine. A redundant chiller
is not planned. The chiller will be a packaged air-cooled scroll unit. The basis of design is Daikin.
• The system fluid will be 35% propylene glycol to provide burst protection for the outdoor piping
without the need for winterization. The chiller will not be required to run in the winter as all AHUs
will be capable of cooling with economizer at temperatures below 55 F.
• Distribution pumps will be variable speed. The basis of design is Grundfos.
Heating water plant
• A heating water plant will serve AHU-1, AHU-2, and AHU-3 heating coils, VAV reheat coils, and
miscellaneous terminal heating equipment.
• There will be (2) gas-fired boilers located in the mechanical mezzanine. Each boiler will be sized for
the full connected load to provide N+1 heating system redundancy. The boilers will be condensing
firetube units. The basis of design is Fulton.
• The system fluid will be 100% water.
• Distribution pumps will be variable speed. The basis of design is Grundfos.
Mechanical piping shall be insulated as follows:
- Heating Water (Less than 1-½"): 1-½” fiberglass
- Heating Water (1-½" and over): 2" fiberglass
- Chilled Water (Less than 6”): 1-½” fiberglass
- Chilled Water (6” and over): 1-½" Elastomeric
- Refrigerant piping: Pre-insulated linesets
Building Automation Systems
The existing building has a Metasys building automation controls system by Johnson Controls Inc. New HVAC equipment will
be added to the District wide Metasys BAS.
WWW.MODUS-ENG.COM
WATERLOO
214 East 4th St.
Waterloo, IA 50703
TEL 319.235.0650
DES MOINES
130 East 3rd St. Ste. 300
Des Moines, IA 50309
TEL 515.251.7280
Page 5 of 16
IOWA CITY
118 East College St. Ste. 200
Iowa City, IA 52240
TEL 319.248.4600
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See also
...or impairments 3.4.1.1 Provide startup, commissioning, re-commissioning, permit coordination, inspection...
State Government of Iowa
Bid Due: 6/19/2026
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