Howlett Snow Melt System.pdf
PDF 2 MB Posted
- Attached to
- HOWLETT ADA RAMP REPAIR
- Solicitation number
- 26-350SOS-PHYSE-B-51672
- Issued by
- Sangamon County, Illinois
About this file
This file contains architectural and engineering drawings for the Howlett ADA Ramp Repair project undertaken by the Illinois Secretary of State at the Howlett Building located at 501 S. 2nd Street, Springfield, Illinois 62756. The project scope includes replacing an existing electric snow melt system on an exterior ramp with a new Delta-Therm snow melt system, installing new lighting fixtures, and performing associated concrete and structural work. Key work elements include removing the existing cable snow system and concrete walk with heating cables and steel decking, installing new galvanized steel decking with reinforced concrete, installing new snow melt cables in seven designated zones (A through G) positioned two inches below the surface, replacing control and contactor panels in the basement electrical shop, installing a new moisture sensor and air sensor, and replacing six existing ramp lighting fixtures with new incandescent lamp holders and LED lamps. The project also involves reinstalling existing handrails, guardrails, and posts while preserving existing limestone walls and granite flooring. The contract is effective from December 30, 2025 through November 30, 2026.
The drawings specify detailed technical requirements for the snow melt cable installation, electrical connections, sensor placement, and concrete specifications, including new 6x6-W4.0xW4.0 welded wire fabric and #4 rebar at 12-inch spacing in both directions. All work must comply with National Electrical Code standards, and the project requires coordination between electrical and structural components. The documents indicate that existing infrastructure including junction boxes, zone wiring, and lighting housings will be retained where possible, with new components connected to these existing systems to minimize disruption and costs.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Howlett ADA Ramp Repairs IFB 26PS729023~1.pdf | ||
| Vendor Disclosure v 24.1 Formerly Forms A~15.docx | DOCX document | |
| IPG Active Registered Vendor Disclosure formerly Forms B v.23.1~38.docx | DOCX document |
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Text version
5'-6"± 20'-1"± 4'-3"±
22'-1"±5'-10"±
11'-3"± 16'-1012"± 5'- 01 2"
4' -10
4' -4
SCALE: N.T.S.
KEY PLAN
NORTH A-1
BAB
© Evan Lloyd Associates, Inc.
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001-017445
Date:
Drawn By:
Revised:
Revised:
Project No.
SHEET
OF SHEETS
Date Signed:
Expiration Date:
S ou th Si xth S tre et
Sp rin gfi eld
, Il lin ois
Ph on e
7.7
.70
RE
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NO
W M
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1 S . 2
ND
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D, IL
DEC. 30, 2025
25062
NOV. 30, 2026
INSTALL SALVAGED HANDRAIL SYSTEM
EXISTING LIMESTONE
WALL TO REMAIN.
LIMESTONE WALL TO REMAIN
GRANITE FLOORING
TO REMAIN
CONC. STRUCTURE
TO REMAIN
112" GALV. STEEL
DECK (TYP.)
8" REINF. CONC.
DECK w/ #4
REBAR @ 12"
O.C. BOTH
DIRECTIONS
(TYP)
2" RIGID
INSUL. (TYP)
A-1
REMOVE AND SALVAGE HANDRAIL
REMOVE CONCRETE WALK, ELECTRIC HEATING
CABLES, STEEL DECKING, AND INSULATION
LIMESTONE WALL TO REMAIN
LIMESTONE WALL TO REMAIN
LIMESTONE WALL TO REMAINGRANITE FLOORING
TO REMAIN
HOWLETT BUILDING
EXTERIOR RAMP
PROJECT SITE.
EXISTING LIMESTONE
WALL TO REMAIN.
SCALE: 38" = 1'-0"
NEW RAMP SECTION
SCALE: 14" = 1'-0"
RAMP DEMOLITION PLAN
NORTH
SCALE: 14" = 1'-0"
NEW RAMP PLAN
NORTH
NEW 6X6-
W4.0xW4.0 W.W.F.
SCALE: N.T.S.
KEY PLAN
NORTH
E-1
BRH
© Evan Lloyd Associates, Inc.
TC
S
E
CRADE
IO
N
AT
TIMOTHY
B. SMITH
L
SN
E
IC
S
TIH
F
TE
O ILIL
001-017445
Date:
Drawn By:
Revised:
Revised:
Project No.
SHEET
OF SHEETS
Date Signed:
Expiration Date:
S ou th Si xth S tre et
Sp rin gfi eld
, Il lin ois
Ph on e
7.7
.70
RE
PL
AC
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NO
W M
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IN
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1 S . 2
ND
S
TR
NG
FI
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D, IL
DEC. 30, 2025
25062
NOV. 30, 2026
SCALE: 14" = 1'-0"
NEW RAMP SNOW MELT PLAN
NORTH
NORTH
EXISTING RAMP LIGHTING HOUSING TO
REMAIN (TYPICAL OF 6), SEE
DETAIL 1/E-1 THIS SHEET FOR
LAMP REPLACEMENT.
SCALE: 14" = 1'-0"
EXISTING BASEMENT FLOOR PLAN
NORTH
REMOVE THE EXISTING CONTACTOR PANEL AND REPLACE
NEW CONTACTOR PANEL (DT16P40A). RECONNECT
TO THE EXISTING ZONE WIRING.
REMOVE THE EXISTING CONTROL PANEL AND REPLACE
WITH A NEW CONTROL PANEL (DTC-120S), RECONNECT TO
THE EXISTING WIRING.
EXISTING JUNCTION BOXES FOR SNOW MELT
SYSTEM. CONNECT THE NEW SNOW MELT
CABLES TO THE EXISTING ZONE
CONDUTORS.
EXTERIOR RAMP
PROJECT SITE.
ELECTRIC SHOP
(BASEMENT).
HOWLETT BUILDING
ELECTRICAL SHOP
NEW SENSOR
SCALE: N.T.S.
NEW RAMP LIGHTING DETAIL1
EXISTING RAMP LIGHT
HOUSING TO REMAIN.
PROVIDE AN INCANDESCENT
LAMP HOLDER (P & S MODEL NO. 3352F)
OR PRE-APPROVED EQUAL. PROVIDE A NEW LAMP
(DLC MODEL NO. LED-8086)
OR PRE-APPROVED EQUAL.
FASTEN LAMP HOLDER
TO THE BACK OF THE HOUSING
EXTEND AND CONNECT TO
THE EXISTING WIRING.
EXISTING LIGHT LOUVER LENS SHALL BE
REUSED. REPLACE THE EXISTING SCREWS
WITH NEW (TYPICAL OF 6 LOCATIONS.)
GENERAL NOTES:
REMOVE THE ENTIRE EXISTING CABLE
SNOW SYSTEM AS INDICATED.
PROVIDE A NEW DELTA-THERM SNOW MELT SYSTEM
EXISTING JUNCTION BOX FOR SNOW
MELT SYSTEM TYPICAL OF 2
SCALE: 14" = 1'-0"
NEW RAMP LIGHTING PLAN
GRANITE FLOORING
TO REMAIN
ZONE "F" ZONE "E"ZONE "G"
ZONE "D"
ZONE "A"ZONE "B"ZONE "C"
E-2
BRH
NEW AIR
SENSOR
© Evan Lloyd Associates, Inc.
TC
S
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CRADE
IO
N
AT
TIMOTHY
B. SMITH
L
SN
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IC
S
TIH
F
TE
O ILIL
001-017445
Date:
Drawn By:
Revised:
Revised:
Project No.
SHEET
OF SHEETS
Date Signed:
Expiration Date:
S ou th Si xth S tre et
Sp rin gfi eld
, Il lin ois
Ph on e
7.7
.70
RE
PL
AC
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EL
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D, IL
DEC. 30, 2025
25062
NOV. 30, 2026
RI
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NEW 120V
MOISTURE
SENSOR
NEW
DTC-120S
C C C C
30 20 30 3020 20 20
EXISTING
ZONE "A"
EXISTING CIRCUIT
BREAKERS TYPICAL.
NEW CONTACTOR PANEL
DT-16P40A
N C
B A
/2
V
AC
EPOXY BODY
4 CONDUCTOR,
RED OVERJACKET
GREEN
BLACK
WHITE
RED
ALUMINUM ALLOY
RETAINER
THERMODISC 2 CONDUCTOR,
RED OVERJACKET
(RED & BLACK
CONDUCTORS)
PLAN VIEW
NEW SENSOR PROBE EXISTING 3/4" CONDUIT
IF POSSIBLE,
LOCATE DOWNHILL
RETAINER
THERMODISC
EXISTING 3/4" CONDUIT
SEAL CONDUIT ENTRY TO PREVENT
MOISTURE IF NECESSARY
INSERT THERODISC IN NIPPLE TO END.
TUCK END OF RETAINER IN BOTTOM OF
SENSOR HOUSING. RETAINER HOLDS
THERODISC AGAINST NIPPLE END CAP.
TOP OF SENSOR
END CAP
3/4" CONDUIT NIPPLE
SIDE ELEVATION
CONNECT TO DTC.
& MATCH COLORS
SCALE: N.T.S.
NEW SLAB SENSOR DETAIL1 SCALE: N.T.S.
ONE LINE DIAGRAM FOR DTC1-20S & DT-16P40A3
REPLACE ESCUTCHEONS @ ALL POSTS
(FINISH TO MATCH EXISTING RAILING)
EXISTING CONCRETE WALL
(DO NOT DISTURB)
NEW 112" GALV. STEEL DECK
1/2" PREMOLDED JOINT FILLER
W/ CONTINUOUS SEALANT
REINSTALL EXISTING HANDRAILS,
GUARDRAILS, POSTS & PICKETS
REMOVE 8" OF CONCRETE & SNOW MELT HEATING CABLES. INSTALL
NEW CABLES 2" BELOW SURFACE & RECONNECT TO THE EXISTING
POWER FEEDS. POUR 8" OF NEW CONCRETE OVER NEW STEEL DECK
1" CHAMFER (TYP.)
PROVIDE 2" SQUARE HOLES OVER
EXISTING HOLE LOCATIONS. GROUT
AROUND POST, HOLD DOWN 1/4" & FILL
RECESS W/ SELF-LEVELING SEALANT
SCALE: N.T.S.
NEW SLAB SNOW MELT CABLE DETAIL2
EXISTING
ZONE "B"
EXISTING
ZONE "C"
EXISTING
ZONE "D"
EXISTING
ZONE "E"
EXISTING
ZONE "F"
EXISTING
ZONE "G"
THWN STRANDED PIGTAILS
3/4" RIDGID METAL
CONDUIT BY OTHERS
INSERT DUCT
SEAL IN HERE
1/2" BRASS
COMPRESSION FITTING
THERMAL GRADIENT SECTION
HOT/COLD SPLICE
M.I. HEATING
SECTION
INSERT DELTA-DRY
POWDER IN HERE
T - UNILET
5.2
CONDUIT CONNECTION TO T - TYPE UNILET TO M.I. CABLE
- FOR SINGLE CONDUCTOR MI CABLES WITH #12 OR #10 AWG (ORANGE) PIGTAILS.
- THE UNILET IS NOT BE CONFUSED WITH A JUNCTION BOX, IT IS PART OF THE MI
CABLE ASSEMBLY. THE UNILET IS PASS THROUGH COMPONENT ONLY!
- INSTALLING RIGID METAL CONDUIT FROM THE UNILET TO THE BUILDING
GROUND SYSTEM WILL GROUND THE M.I. CABLE SYSTEM PER THE NEC.
- IF PVC CONDUIT IS USED, (NOT RECOMMENDED) THE ELECTRICIAN MUST GROUND
THE UNILET BY INSTALLING A GROUND LUG INSIDE THE UNILET BODY AND INSTALL
A GROUND WIRE FROM THE UNILET BACK THE BUILDING GROUND SYSTEM.
2" RIGID INSULATION
NEW 6X6-W4.0xW4.0 W.W.F.
#4 REBAR @ 12" O.C. BOTH DIRECTIONS
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