10-!-CR27014-26066270 DFCM Addendum 002.pdf

DFCM Addendum Cover Page, 2.26.2026

DFCM Addendum #002

Reference: SWTECH Kanab Shop Mechanical Upgrade DFCM Project #26066270 U3P Event #CR27014

Date: September 22, 2026

To: Prequalified Mechanical Contractors

From: The Division of Facilities Construction and Management

Note: This Addendum shall be included as part of the Contract Documents. Items in this Addendum apply to all drawings and specification sections whether referenced or not involving the portion of the work added, deleted, modified, or otherwise addressed in the Addendum. Bidders are required to acknowledge receipt of this Addendum when their bid is submitted. Failure to do so may subject the Bidder to disqualification.

Addendum Items

Solicitation Schedule Changes: There are no changes to the Solicitation Schedule in this addendum.

DFCM Addendum Items: N/A

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A/E Addendum Items: A/E Addendum # 002- Dated 09/22/2026 Click to enter text

Total Attached Pages: 4

ADDENDUM #002

Project Name: Kanab SWATC RTUs

DFCM Project #: 26066270

From: WHW Engineering LLC

733 West 9000 South Sandy, Utah 84070 Phone (801) 466-4021

To: All Bidding Contractors Addendum No: 3

Date: 09.21.26

This Addendum forms and becomes a part of the Contract Documents and modifies the original Bidding Documents dated 08/08/25 as noted below. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification.

This Addendum consists of 4 page(s) and 1 drawing(s).

I. QUESTIONS AND ANSWERS:

a. Does the facility want to keep the existing radiant heaters after they are removed?

1. No. Please remove from building.

b. Will the new RTUs need to tie into the existing fire alarm?

1. Yes, please coordinate with Mountain Alarm for tie-in.

c. What type of gas is serving the building?

1. The existing gas is propane. Please provide new propane kit to serve new air handlers.

d. If the existing wall penetrations are not used will they need to be patched?

1. Yes, plan on coordinating with facilities for their preferred way to patch aluminum siding.

e. Is the roof standing seam?

1. The existing roofing material is SL-16 over 7/16” O.S.B. over 30# felt.

f. Will the existing domestic water serving the existing evaporative coolers be removed?

1. Yes, the intent is to remove the domestic water piping back to the existing main and cap.

g. What manufacture is the FACP?

1. Mountain Alarm.

h. Is the roof under warranty? Is there a specific company we need to work with for patches?

1. The roof is not under warranty. Any roofing contractor on the state’s pre-approved roofing contractor list is acceptable.

i. Do the existing radiant heater vents need to be capped or completely removed and patched?

1. The existing vents need to be removed and the existing penetrations will need to be patched by DFCM approved roofing contractor.

j. Could the RTUs be placed on the roof rather then the ground as drawn?

1. The RTUs will need to be located on the ground.

k. Can you get us the alarm system people so we can get pricing to tie into our units

1. Mountain Alarm is the current alarm company for the facility.

l. The plan shows the duct immediately going through the wall then up inside the tool coral. Can you clarify if that's the way you want the new supply and return ran or if this is to be run on the outside of the building then penetrate the wall to where we will need to insulated the duct up 16' AFF?

1. Contractor may re-configure the orientation of the rooftop units via

RFI and approval of the engineer. This may be done without added cost or change orders to the project.

m. The existing fire alarm panel is in need of replacement. Will the contractor be responsible for replacing the panel?

1. No. SWATC will replace the panel and provide all necessary upgrades to the fire alarm system. Contractor will be required to tie mechanical equipment into new panel.

II. Changes to Drawings:

a. See attached housekeeping pad detail.

III. Changes to Specifications:

a. The existing building does not have a building management system. Please disregard spec section 230900. The new equipment will be controlled by local thermostats and sensors only.

PRIOR APPROVALS

THE FOLLOWING ITEMS, AS SUBMITTED, ARE CONSIDERED, IN GENERAL AND IN NAME ONLY, AS EQUAL TO THOSE ITEMS SPECIFIED. THIS REVIEW DOES NOT RELIEVE THE CONTRACTOR OR SUPPLIER OF THE RESPONSIBILITY OF CONFORMING TO THE DRAWINGS AND SPECIFICATIONS, NOR DOES IT RELIEVE THE CONTRACTOR OF THE REQUIREMENTS OF THE SPECIFICATIONS FOR COORDINATION WITH OTHER TRADES. ALL DIMENSIONS SHALL BE CONFIRMED AND CORRELATED AT THE JOBSITE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING EXISTING CONDITIONS AND THE SUITABILITY OF “EQUAL” PRODUCTS FOR THE SPECIFIED APPLICATION.

Description Manufacturer

Test and Balance BCS / Utah Valley T&B/ Prestige

Rooftop Unit Tempmaster by JCI

OUTDOOR EQUIPMENT PAD DETAIL

SMOKE SENSORS IN SUPPLY

AND RETURN AIR DUCTS WHERE

REQUIRED.

S

MOUNT ON LEGS

OR RAILS

MOUNT ON SPRING ISOLATORS

PROVIDE EXTERIOR 1-1/2"

INSULATION AND ALUMINUM

JACKET AT EXTERIOR

EXPOSED DUCT.

PROVIDE EXTERIOR WALL

PENETRATION. FLASH AND

SEAL WEATHER TIGHT

CONDENSATE DRAIN AND TRAP.

TYPICAL

ROOFTOP UNIT

ECONOMIZER

PROVIDE FLEXIBLE

DUCT CONNECTION.

4" CONCRETE PAD

S

TRANSITION DUCT AS NECESSARY

TO PENETRATE WALL AT CRAWL

SPACE LEVEL.

DETAIL NOTES:

PROVIDE 12" OF COMPACTED STRUCTURAL FILL MINIMUM. COMPACTED LIFTS TO AT LEAST 95% OF THE DRY DENSITY IN

ACCORDANCE WITH ASTM D-1557.

4" COMPACTED LAYER OF COMPACTED GRAVEL. GRAVEL MAY CONSIST OF TYPE I OR TYPE II AGGREGATE BASE, OR PIT RUN

GRAVEL WITH A 2- INCH MAXIMUM PARTICLE SIZE AND NO MORE THAN 12% FINES PASSING THE NO. 200 SIEVE.

4" THICK REINFORCED CONCRETE PAD.

#4 @16 BOTHWAYS

12"4"

See Plan

SCALE: NONE

4"

2 3

DRUM LOUVERS

MANUAL BALANCING

DAMPER W/ LOCKING

QUADRANT, MAY BE A

PART OF DRUM LOUVER.

SEAL DUCT

CONNECTION

MAIN AIR

ROUND DUCT

1/

2" W

ID

E

R U N N E R

F

LO

W

A

IR

SINGLE THICKNESS

TURNING VANES

LEADING AND TRAILING

EDGE TO BE PARALLEL

WITH SIDE OF DUCT.

1" LONG MINIMUM

TRAILING EDGE

COORDINATE

OPENING WITH G.C.

NEW WALL

BACKDRAFT DAMPER SET

TO OPEN FROM EXHAUST

FAN DISCHARGE PRESSURE.

ATTACH TO WALL WITH

1-1/2" SCREWS AND

INSERTS.

EXHAUST FAN

FRAME AND HOUSING.

INLET SCREEN

NEMA 4

WEATHERPROOF

HOOD

AND FRAME.

BALANCING DAMPER.

SET TO ALLOW

SCHEDULED

CFM TO BE EXHAUSTED.

BOLT FRAME OF FAN

HOUSING TO SUPPORT

FRAME WITH 1/4"Ø

BOLTS.

2"x2"x1/8" ANGLE

SUPPORT FRAME.

WELD ALL

AROUND.

ATTACH TO WALL

WITH 3/8"x2" LAG

BOLTS AND

INSERTS

WALL

UNISTRUT ANCHORED TO WALL

UNISTRUT CLAMP

GAS PIPING

SEF

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HATUFOETATS

R E

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NI

GNELANOIS

WINWARD M.

PACKER

No. 375080

Fax: (801) 538 - 3267 Phone: (801) 538 - 3018 Salt Lake City, Utah 84114 4110 State Office Building Construction & Management Division of Facilities

Department of Administrative Services

Internet: http://www.dfcm.state.ut.us

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CONSULTANTS

PROJECT NAME & ADDRESS

CODE REVIEW STAMP

SHEET NO.

PROJECT MANAGER:

DATE:

CHECKED BY:

DRAWN BY:

REVISIONDATEMARK

08/08/2025

WHW JOB NO.:

25078

A

B

C

D

2 3 4

1 2 3 4

A

B

C

D

SHEET TITLE

E E

WP

STAFF

CL

733 S Cowboy Way Kanab, UT 84741

SWATC KANAB

SHOP

MECHANICAL

UPGRADE

DFCM #26066270

08/08/25

MECHANICAL DETAILS

ME502

SCALE: NONE

1 DRUM LOUVER DETAIL

SCALE: NONE

2 TURNING VANE DETAIL

SCALE: NONE

3 WALL MOUNTED EXHAUST FAN DETAIL

1/8" = 1'-0"

GAS LINE WALL ANCHOR DETAIL

1 ADD #3 09/18/26

SCALE: NONE

5 GROUND MOUNTED RTU DETAL