Additional Tunnel Heating-M-1.pdf
PDF 292 KB Posted
- Attached to
- Steam Tunnel Ventilation Replacement Federal contract opportunity
- Solicitation number
- NB196000-26-00830
About this file
This is a mechanical design and demolition plan document for Building 42 Tunnel Ventilation at the National Institute of Standards and Technology (NIST) facility located at 325 Broadway, Boulder, Colorado. The project involves the complete removal and replacement of existing ventilation and steam heating systems with new mechanical equipment.
Demolition work includes removal of two supply fans with power and controls, two steam heating coils with piping and controls, one steam condensate pump with piping and controls, and all associated HPS (High Pressure Steam) and CPD (Condensate) piping, insulation, and hangers. Field-verified capping of 2-inch HPS and 2-inch CPD pipes is required, along with temporary capping of curb openings. The new system installation requires a THYBAR prefab standard 14-inch tall insulated curb to support a Mark MAU-1 indoor mechanical unit (Model DGX-P124-H32-MF). Additional work includes removal and patching of spalled concrete at horizontal and vertical surfaces, application of SIKA-THOROSEAL-581 weather-resistant barrier coating, and installation of SIKA-FLEX-NP100 sealant beads. The tunnel stair enclosure plan specifies removal of three louver blank-offs, installation of insulated sheet metal plenum columns, and two automatic air dampers per enclosure balanced for 2,000 CFM of relief each. The design was prepared by NIST's Boulder Design and Construction Division with an approval date of March 10, 2026.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Specifications.zip | ZIP file | |
| Additional Tunnel Heating-M-4.pdf | ||
| DRAFT SOW - Steam Tunnel Ventilation.docx | DOCX document | |
| 001000 General Contractor Requirements and Site Standards.zip | ZIP file | |
| Additional Tunnel Heating-M-2.pdf | ||
| 01A NIST Boulder General Contractor Requirements.pdf | ||
| Additional Tunnel Heating-M-0.pdf | ||
| Additional Tunnel Heating-M-3.pdf |
On GovTribe
Work with this file on GovTribe
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
HPS
1 REMOVE SUPPLY FAN COMPLETELY INCLUDING POWER AND CONTROLS
TYPICAL OF 2 FANS. TEMPORARILY CAP CURB OPENINGS.
2 REMOVE STEAM HEATING COIL , PIPING AND CONTROLS, TYPICAL OF 2 COILS.
3 CUT AND WELD CAP TO 2" HPS, FIELD VERIFY SIZE AND LOCATION.
CP-001
2 HC-001
1 SF-001 SF-002
HC-002
VENTILATION AND STEAM SYSTEM DEMOLITION
14" H
PS
8" C
PD
4 CUT AND WELD CAP TO 2" CPD, FIELD VERIFY SIZE AND LOCATION.
5 REMOVE STEAM COND. PUMP INCLUDING PIPING, POWER AND CONTROLS.
6 CONCRETE CURB TO REMAIN, TEMPORARILY CAP & SECURE CURB OPENINGS.
7 REMOVE ALL HPS AND CPD PIPING, PIPE INSULATION AND PIPE HANGERS COMPLETELY.
DEMOLITION PLAN
4'-111 4"
MECHANICAL EQUIP. ON CONCRETE STRUCTURE
8' -3
3 4"
4'-83 4" 2'-91
2" 4'-83 4" 2'-4"
16'-91 2"
4' -8
3 4" 1'
-9 1 2"
2'-21 2"
1' -9
1 2"
REMOVE/DEMOLISH
EXISTING MECHANICAL
EQUIPMENT AT BOTH
CONCRETE OPENINGS
NEW MECANICAL UNIT
ON NEW INSULATED CURB.
CURB:
MAKE:THYBAR PREFAB
STANDARD 14-INCH TALL
INSULATED CURB
MECHANICAL UNIT:
MARK: MAU-1 indoor
MODEL: DGX-P124-H32-MF
REMOVE SPALLED CONCRETE
AT HORIZONTAL/ VERTICAL
SURFACES AND PATCH
SPALLED AREAS. INSTALL
SIKA-THOROSEAL-581 ON
HORIZONTAL AND VERTICAL
SURFACES, FROM EDGE OF
HORIZONTAL ROUGH OPENING
TO EXISTING TERMINATION
BAR ON VERTICAL FACE. (ALL
EXPOSED EXTERIOR
CONCRETE SURFACES).
ACCESS SIDE CONTROL CENTER
ACCESS SIDE BURNER
ACCESS SIDEACCESS SIDE
INTAKE V-BANK
FILTER
DIRECT GAS MIXEDFLOW BLOWER
2'-4"4'-83 4"2'-91
2"4'-83 4"2'-21
2"
12'-9" 2'-2"1'-101 2"
12'-9"1'-101 2"
1' -5
1 2" 5'
-4 3 4"
1' -5
1 2"
2'-2"
42-MAU-001-ELEVATION VIEW
42-MAU-001-PLAN VIEW
EQUIPMENT -DEMOLITION
SCALE: NOT TO SCALE
NEW MECANICAL UNIT CURB (THYBAR
PREFAB STANDARD 14-INCH TALL
INSULATED CURB).
TWO 1/4-INCH MIN. SEALANT BEADS
(SIKA-FLEX-NP100), SPACED 1-INCH MIN.
APART. SEALANT MUST BE 1-PART
DIRECTLY FROM SIKA; NO 2-PART
SEALANT PRODUCTS.
APPLY SIKA-THOROSEAL-581 PER
MANUFACTURER. REQUIREMENTS,
CONTINUOUS FROM EXISTING ROUGH
OPENINGS DOWN VERTICAL FACE OF
ONCRETE TO TERMINATION BARS.
REMOVE AND PATCH SPALLING CONC
-RETE PRIOR TO INSTALLING SIKA
-THOROSEAL-581.
NEW SIKA-FLEX
-NP100 SEALANT
FILLET BEAD AT
TOP OF TRIM BAR
OVER TOP OF
SIKA-THOROSEAL
-581 (CONTINUOUS).
EXISTING
TERMINATION
BAR AND
MEMBRANE.
EXISTING ROUGH OPENINGS.
WEATHER RESISTANT BARRIER COATING DETAIL
TUNNEL STAIR ENCLOSURE PLAN (TYP. OF 3 ENCLOSURES)
SCALE: NOT TO SCALE
37"X24" EXIST.
LOUVER, TYP. OF 3.
NOTES:
1. FIELD VERIFY ALL DIMENSIONS
INTERIOR COLUMN.
2. REMOVE LOUVER BLANK OFFS
INTERIOR COLUMN.
INSULATED SHEET METAL
PLENUM COLUMN TO
COLUMN, AT INTERIOR
LOUVER.
REMOVE LOUVERS BLANK OFFS
VERIFY LOCATIONS AND
QUANTITIES.
INTERIOR COLUMN.
AUTOMATIC AIR
DAMPER, REFER
TO SCHEDULE AND
CONTROL
SEQUENCE
3. BALANCE EACH AUTOMATIC DAMPER MAX OPEN POSITION FOR 2,000 CFM OF RELIEF EACH.
4. PROVIDE (2) AUTOMATIC DAMPERS PER ENCLOSURE.
SHEET NUMBER
PROJECT NAME of
325 BROADWAY BOULDER, COLORADO 80305-3328
NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
DATEDESIGN APPROVAL
BOULDER DESIGN AND CONSTRUCTION DIVISION
DATESUPV.BYDESCRIPTIONREVISION
3 DRAFTING
ADDITIONAL TUNNEL HEAT
COOK
BUILDING 42 TUNNEL VENTILATION
3/10/2026
M-1COOK
| Sheets and Views |
| M-1 |
File details come from the government source that posted it. Updated .