CCD - BNSF Welding Studio - Phase II - MEP Addendum #1.pdf
PDF 365 KB Posted
- Attached to
- AHEC-17705-D - Dust Collector System - CCD
- Solicitation number
- DQ1 GMAA 2017000502 2
- Issued by
- Denver County, Denver City, Colorado
About this file
This is a Mechanical, Electrical, and Plumbing (MEP) Addendum #1 for the BNSF Welding Studio Phase II project at Community College of Denver, located at 2570 31st Street, Denver, Colorado. The addendum, dated November 7, 2016, consists of two technical drawings: a Mechanical Floor Plan (M-101) and a Level 1 Power Plan (E-101), both at a scale of 1/8" = 1'-0". The mechanical scope includes relocation and extension of an existing 8-inch duct, installation of a 7-inch round duct routed to slot hoods at a plasma cutting station and plasma table with 750 CFM exhaust capacity, installation of manual blast gates, and support framing using Unistrut mounted to the floor. The project also requires balancing of exhaust fans (EF 1-4) on the roof above, each collection point requiring 750 CFM, and balancing of make-up air units (MAU 1-2) to a maximum of 4,200 CFM. The owner will contract separately with a dust collection system vendor for spark coolers, ductwork, welding fume hoods, and blast gates. Additionally, 3/4-inch and 3/8-inch compressed air lines must be connected to serve fume extractors and self-cleaning fume extraction systems mounted on Unistrut support.
The electrical scope requires installation of a new 60-amp, 480-volt, 3-phase receptacle to serve arc welders with specific Meltic components and 6-foot SOOW cord lengths. All conduit 10 feet or less above finished floor shall be galvanized rigid conduit (GRC), while conduit 10 feet and greater shall be electrical metallic tubing (EMT), all surface-mounted to existing walls, Unistrut support, columns, and roof structure. The power plan identifies multiple existing panels (WLP1, WLP2, WHP1, WHP2, WHP3, WHP4, MLP1, MLP2, MHP1, MDP, CLP1) and transformers, with a new panel WHP4 to be installed. Specific flag notes address ceiling coordination requirements for all MEP systems prior to installation commencement, avoidance of ductwork routing over electrical rooms with proper National Electrical Code clearances, and coordination with Division 16 contractors. All new receptacles require hinged "in-use" covers, and fire alarm notification appliances must be relocated to new locations with extended fire alarm cabling.
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Text version
SCALE:
UP
UP
UP
A
BCDEFGHI
MECHANICAL FLOOR PLAN
1/8" = 1'-0"
"ø
"ø
"ø
8" ø
# FLAG NOTES:
1. CEILING COORDINATION OF ALL MEP SYSTEMS
(LIGHTING, DUCTWORK, DIFFUSERS,
ELECTRICAL, FIRE PROTECTION, ETC.) MUST
BE COMPLETED BY THE CONTRACTOR PRIOR
TO THE START OF ANY INSTALLATIONS.
2. AVOID ROUTING DUCTWORK OVER
ELECTRICAL ROOMS OR ELECTRICAL PANELS;
MAINTAIN N.E.C. CLEARANCES. COORDINATE
ROUTINGS WITH DIV. 16 CONTRACTOR.
HVAC NOTES:
17"ø
6" ø
8" ø
9" ø
"ø
"ø
"ø
19"ø 17"ø20"ø21"ø
22"ø
SPARK
COOLER
T
8"ø
T 18 " Ø
" Ø 12
"ø
"ø
"ø
T
PROJECT SCOPE
18"ø
NEW DUCTS 8" AND SMALLER
SHALL BE 22 GAUGE.
"Ø
9" Ø
8" Ø
6" Ø
"Ø
8"ø
8"ø
1. RELOCATE EXISTING 8" DUCT AND EXTEND DUCT
AS SHOWN.
2. 7"ø ROUND DUCT DOWN TO SLOT HOOD AT
PLASMA CUTTING STATION AND PLASMA TABLE.
SLOT HOOD TO EXHAUST 750 CFM. PROVIDE
MANUAL BLAST GATE. RE: DETAIL B ON SHEET
M-001. MATCH (E) PLASMA HOOD CONSTRUCTION.
SUPPORT WITH UNISTRUT FRAME MOUNTED TO
FLOOR.
3. THE OWNER WILL CONTRACT WITH A DUST
COLLECTION SYSTEM VENDOR TO PROVIDE AND
INSTALL ALL REQUIRED COMPONENTS FOR DUST
COLLECTION SYSTEM INCLUDING, BUT NOT
LIMITED TO, SPARK COOLER, DUCTWORK,
WELDING FUME HOODS, AND BLAST GATES.
4. BALANCE EF 1-4 ON ROOF ABOVE INCLUDING
EACH COLLECTION POINT, FOR NEW AIRFLOW
REQUIREMENTS. COLLECTION POINTS REQUIRE
750 CFM EA.
5. BALANCE MAU 1-2 ON ROOF ABOVE GRINDING LAB
TO UNIT MAXIMUM OF 4200 CFM. (NOT SHOWN
FOR CLARITY.)
6. OWNER WILL PROVIDE A SELF CONTAINED DUST
COLLECTION SYSTEM FOR THESE WELDING
BOOTHS. THESE WELDING BOOTHS WILL NOT BE
SERVED BY THE EXISTING DUST COLLECTION
SYSTEM.
7. CONNECT 3/4" COMPRESSED AIR LINE TO SERVE
FUME EXTRACTORS. MATCH (E) COMPRESSED AIR
PIPING CONSTRUCTION.
8. 3/8" COMPRESSED AIR DOWN TO SELF-CLEANING
FUME EXTRACTOR SUPPORT ON UNISTRUT
SUPPORT PROVIDE BY ELECTRICAL
CONTRACTOR. COORDINATE EXACT DROP
LOCATION WITH FINAL EQUIPMENT MOUNTING.
SPARK
COOLER
"Ø
CA
1/2"
11/2" CA
CA3/4"
3/ 4"
3/ 8"
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BCDEFGHI
LEVEL 1 POWER PLAN
1/8" = 1'-0"
H
1. EXISTING FIRE ALARM DEVICE TO REMAIN.
2. RECEPTACLE ON TOP OF 2" STRUCTURAL STEEL
AT TOP OF WELDING BOOTHS. REFER TO
WELDING BOOTH DIAGRAM FOR ADDITIONAL
INFORMATION AND REQUIREMENTS.
3. PROVIDE 60 AMP, 480 VOLT, 3-PHASE
RECEPTACLE TO SERVE ARC WELDER WHICH
SHALL CONSIST OF MELTIC #MB-6112 (BOX),
MELTIC #MA6 (30 DEGREE ANGLE), MELTIC
#37-64043 (RECEPTACLE). ON WELDER INSTALL
6'-0" OF 6/4 SOOW CORD AND INSTALL MELTIC
#37-68043 (PLUG) AND MELTIC #FH611 (HANDLE)
ON LOOSE END OF CORD.
4. DISCONNECT AND REMOVE FIRE ALARM
NOTIFICATION APPLIANCE. RELOCATE TO NEW
LOCATION INDICATED AND EXTEND FIRE ALARM
CABLE TO NEW LOCATION OF FIRE ALARM
NOTIFICATION APPLIANCE.
5. EXISTING EQUIPMENT TO REMAIN.
6. REFER TO NORTH WALL BRANCH CIRCUIT
SUPPORT DIAGRAM FOR ROUTING OF WELDER,
RECEPTACLE AND LIGHTING BRANCH CIRCUITS
UP TO BUILDING STRUCTURE.
7. REFER TO ISLAND POWER SUPPORT DIAGRAM
FOR SUPPORT OF RECEPTACLES, DISCONNECT
SWITCHES AND ROUTING OF BRANCH CIRCUITS
UP TO BUILDING STRUCTURE.
8. EXISTING RECEPTACLE TO REMAIN.
9. POWER TO SELF CONTAINED DUST COLLECTION
SYSTEM FOR THE NORTH WALL WELDING
BOOTHS. REFER TO NORTH WALL BRANCH
CIRCUIT SUPPORT DIAGRAM AND ELEVATION
AND NORTH WALL (SELF CONTAINED) DUST
COLLECTION SYSTEM WIRING DIAGRAM FOR
ADDITIONAL INFORMATION AND REQUIREMENTS.
FLAG NOTES:
H H
H
H
H
H
HH
H
H
ALL CONDUIT 10'-0" OR LESS ABOVE FINISHED
FLOOR SHALL BE GRC. CONDUIT 10'-0" AND
GREATER ABOVE FINISHED FLOOR SHALL BE EMT.
ALL RECEPTACLES SHALL BE PROVIDED WITH
HINGED "IN-USE" COVERS.
ALL NEW CORDS FOR WELDERS SHALL BE 10'-0" IN
LENGTH.
THE NUMBER NEXT TO ELECTRICAL DEVICES
INDICATE THE CIRCUIT POSITION THAT BRANCH
CIRCUIT SHALL OCCUPY IN PANEL "WLP2" UNLESS
NOTED OTHERWISE.
ALL CONDUIT SHALL BE SURFACE MOUNTED TO
EXISTING WALLS, UNISTRUT SUPPORT, COLUMNS
AND ROOF STRUCTURE.
GENERAL NOTES:
1.
2.
EXISTING PANEL "WLP1"
EXISTING TRANSFORMER "T-WLP1"
EXISTING PANEL "WHP2"
EXISTING PANEL "MLP2"
EXISTING PANEL "MLP1"
EXISTING TRANSFORMER "T-MLP1" AND "T-MLP2"
EXISTING PANEL "MHP1 - SECTION #2"
EXISTING "MDP"
EXISTING TRANSFORMER "T-CLP1"
WALL MOUNTED 1'-0" ABOVE
ACCESSIBLE CEILING IN OFFICE
3.
EXISTING UTILITY METER
EXISTING PANEL "MHP1 - SECTION #1"
EXISTING PANEL
"CLP1"
EXISTING PANEL "WHP1"
EXISTING GROUND BUS BAR
EXISTING PANEL
"WLP2"
EXISTING PANEL
"WHP3"
4.
PROJECT SCOPE
H
5.
E-2000M
E-2000N
E-2000O
E-2000P
E-2000Q
E-2000R
E-2000S
E-2000T
E-2000U
NEW PANEL
"WHP4"
H
E-2004C
E-2004D
E-2003D
H
R 3
EXISTING WELDING
BOOTHS TO REMAIN
(TYPICAL)
E-2000V 2
E-2000W
2 6
E-2000X
E-2006A 9
E-2006B 9
E-2006C 9
E-2006D 9
E-2006E 9
E-2006F 9
E-2003C 7
WLP1-70
+48",WP1
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| DOC |
| 946603 (003) |
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