Gas-detector points
LEL · H2 · O2 · CO
Building 307 · Coordination model
Safety systems coordination
Building 307 safety systems — coordination model
Detection RMCNotification RMCExterior wiring gutterUnderground · completedLELH2O2COFlameJB / transition4-ft-wide trapeze · 8-ft spacing
GDGas detectorFDFlame detectorYBYellow beaconRBRed beaconHSHorn / strobeJBJunction boxRMCRigid metal conduitWGExterior wiring gutter
All labeled ¾-in. home-run RMC stays inside B307Existing underground raceways → B307B electrical roomFuel-yard wiring travels in the gutter · short RMC stubs connect devices
Site isometric · Full vertical orbit · One finger rotates · Pinch to zoom
Finished floor0′-0″Approach gutter+18′-0″Fuel-yard gutter+3′-0″Side eaves+45′-0″Center ridge+50′-0″
Point inspector
Hover over an item or tap it to see Elevation and Conduit distance.
02
Installation scope
Owner-furnished devices with contractor-furnished raceway, conductors, boxes, fittings, supports, and complete installation.
Flame detectors
Sense-Ware UV/IR
Safety beacons
7 yellow · 7 red
Horn / strobes
White combination units
03
Device branch-run conduit takeoff
Approximate centerline lengths measured from the modeled branch geometry, grouped by raceway system.
SystemBranch runsModeled conduitAverage per run
Detection21544 ft25.9 ft
Notification16318 ft19.9 ft
Combined total37862 ft23.3 ft
Branch-run quantity includes 17 gas detectors, 4 flame detectors, 14 beacons, and 2 horn/strobes. GD-14 and GD-15 route to the B307B electrical room, then use the completed underground raceway to reach the blue cabinet inside B307. All Building 307 home-run conduits stop at the blue cabinet or east gutter transition; fuel-yard wiring continues inside the gutter with short RMC device stubs. Parallel horizontal raceways share one 4-ft-wide strut and all-thread trapeze at each support station, at maximum 8-ft spacing; vertical drops use individual column-mounted strut clamps. Existing underground raceway, exterior wiring gutter, fittings, field offsets, rack steel, support hardware, and material waste are excluded.
03A
Conduit fill & raceway bank
Provisional ¾-in. RMC allocation using actual cable area, with every home-run pipe labeled by the monitor or notification circuit it serves.
RacewayAssigned useCable countCalculated fill
RMC-D01GD-01 · GD-02228.3%
RMC-D02GD-03 · GD-04228.3%
RMC-D03GD-05 · GD-06228.3%
RMC-D04GD-07 · GD-08228.3%
RMC-D05GD-09 · GD-10228.3%
RMC-D06GD-11 · GD-12228.3%
RMC-D07GD-13 · GD-14228.3%
RMC-D08GD-15 · GD-16228.3%
RMC-D09GD-17 · FD-01228.3%
RMC-D10FD-02 · FD-03228.3%
RMC-D11FD-04 · spare capacity114.2%
RMC-N01YB/RB-01–07 · HS-01/02223.4%
Fill basis: ¾-in. RMC internal area 0.533 in²; two-cable limit 31% = 0.165 in². The estimate assumes 4/C shielded cable outside diameter no greater than 0.31 in. and 2/C cable outside diameter no greater than 0.25 in. Two 4/C cables occupy approximately 0.151 in² (28.3%); the 4/C plus 2/C notification pair occupies approximately 0.125 in² (23.4%). Confirm actual manufacturer cable diameters, equipment grounding/bonding conductors, derating, pulling tension, and hazardous-location requirements before release.
MaterialQuantityBasisNotes
Assigned high-level ¾-in. RMC routes1,533 ftEach raceway ends at its assigned pair / transitionNo full-perimeter duplication
B307 cabinet terminations408 ft12 labeled 34-ft rack-to-cabinet routesBuilding home-run RMC only
Modeled new RMC including device stubs2,803 ft1,533 ft assigned routes + 408 ft terminations + 862 ft branches/stubsFuel-yard gutter and completed underground raceway excluded
Planning allowance3,100 ftApproximately 10% routing allowanceFinal takeoff after cable selection
03B
Complete panel-to-device runs
One-way conceptual wiring distance from the B307 blue cabinet in bay 2–3 to every device. B307B device wiring includes the completed underground raceway into the electrical room.
Gas monitors
Provisional estimate: 17 separate 4/C shielded home runs; owner I/O confirmation required
DeviceComplete estimated run
GD-01158 ft
GD-0298 ft
GD-03256 ft
GD-04370 ft
GD-0564 ft
GD-0668 ft
GD-07124 ft
GD-08130 ft
GD-09181 ft
GD-1097 ft
GD-11106 ft
GD-1297 ft
GD-13106 ft
GD-14115 ft
GD-15106 ft
GD-16395 ft
GD-17447 ft
Flame sensors
Dedicated 4/C shielded home runs
DeviceComplete estimated run
FD-01213 ft
FD-02234 ft
FD-03355 ft
FD-04437 ft
Yellow beacons
Pair 2 within shared 4/C beacon cable
DeviceComplete estimated run
YB-0150 ft
YB-02107 ft
YB-03135 ft
YB-04441 ft
YB-05416 ft
YB-06575 ft
YB-07656 ft
Red beacons
Pair 1 within shared 4/C beacon cable
DeviceComplete estimated run
RB-0153 ft
RB-02111 ft
RB-03138 ft
RB-04438 ft
RB-05420 ft
RB-06575 ft
RB-07656 ft
Horn / strobes
Dedicated 2/C circuit with factory links retained
DeviceComplete estimated run
HS-01219 ft
HS-02607 ft
Each value is presented as one complete estimating length from the panel to the listed device. Both junction boxes are pull points only, with no splices assumed. Gas totals use the provisional 17-home-run estimating basis; final X5000 sensor pairing and I/O may reduce that quantity. Flame totals are additive dedicated runs. Beacon and horn/strobe rows above are individual panel-to-device paths; their complete loop cable quantities are calculated separately below.
03C
Wire material order summary
Complete estimating quantities for ordering, with all routing and material adjustments already included in each run.
Cable / useRunsAverage complete runEstimated wire
4/C shielded · gas monitors17 provisional home runs171.6 ft/run2,918 ft
4/C shielded · flame sensors4 home runs309.8 ft/run1,239 ft
4/C control · red/yellow beacons1 loop · 14 boxes722.0 ft/loop722 ft
2/C control · horn/strobes1 loop · 2 boxes612.0 ft/loop612 ft
All control cable23 prepared pulls238.7 ft/pull5,491 ft
Purchasing allowance rounded by cable type: 3,000 ft gas-monitor 4/C shielded, 1,300 ft flame-sensor 4/C shielded, 800 ft beacon 4/C control, and 700 ft horn/strobe 2/C control—for 5,800 ft ordered across four cable types. Detector runs now use the assigned terminating raceway routes rather than twelve complete perimeter loops. Confirm conductor size, voltage drop, shielding, insulation/listing, and approved controls wiring before purchase.
04
Support racks & hardware
Conceptual quantities generated from shared 4-ft-wide trapezes, plus the 30-ft-wide, two-leg fuel-yard device rack with a +25-ft top elevation.
Assembly / hardwareQuantityBasisDrawing use
4-ft shared horizontal trapeze racks11358 perimeter · 55 branch/cabinet452 LF crossbar strut
High-level RMC carried per shared rack1211 detection · 1 notificationApproximately 3.6-in. modeled centers
All-thread rods2262 per shared trapezeField-cut length
Trapeze attachment hardware226 clamps · 452 nuts · 452 washers2 support points per rackVerify structure type
Vertical strut racks1408-ft max spacing140 RMC clamps
Fuel-yard rack legs / beams2 legs · 2 beams30 ft wide · +25 ft topStructural steel
Rack foundations2 base plates · 8 anchors4 anchors per legFinal engineering required
Rack connection hardware4 plates · 16 bolts2 plates per leg4 bolts per plate
Adjustable device rails / brackets4 rails · 4 bracketsNominal +20 ft · ±5 ft adjustmentFD · YB · RB · HS
Device-entry adapter material742 per modeled device boxOne entering · one leaving; pull-point junction-box entries excluded
The adapter quantity covers the 37 modeled device boxes only. Confirm the actual entry thread size and hazardous-location listing before purchase; main and fuel-yard pull-point junction-box adapters are excluded until the final port count is confirmed. All quantities are a conceptual coordination allowance, not a sealed structural design. Confirm rack member sizes, wind loading, foundations, anchor embedment, corrosion protection, structural attachment types, rod lengths, seismic requirements, and manufacturer-specific device brackets before fabrication or purchase.
05
System one-line references
Conceptual conductor functions for estimating and coordination. Final panel type, input/output assignments, supervision method, resistor values, and approved shop drawings govern installation.
05A
Gas-monitor one-line
Each modeled MSA Ultima X5000 receives a dedicated shielded 4-conductor home run to its own analog input channel.
Safety PLC17 AIDedicated inputs
AI-01GD-01
AI-02GD-02
AI-03GD-03
AI-04GD-04
AI-05GD-05
AI-06GD-06
AI-07GD-07
AI-08GD-08
AI-09GD-09
AI-10GD-10
AI-11GD-11
AI-12GD-12
AI-13GD-13
AI-14GD-14
AI-15GD-15
AI-16GD-16
AI-17GD-17
Typical 4/C shielded home run:+24 VDC0 VDCmA1 analog signalSpare / mA2 if approvedShield per manufacturer grounding detail
The X5000 analog output is a 4–20 mA sourcing signal. The current material estimate conservatively treats all 17 modeled sensing points as separate home runs, but the RFQ lists 9 X5000 transmitters and the final sensor pairing, communication method, and I/O schedule are not provided. The longest modeled gas-monitor path is GD-17 at approximately 529 ft. Obtain owner confirmation before releasing gas-monitor cable.
05B
Flame-sensor one-line
Four dedicated shielded home runs—one Sense-Ware UV/IR-210/1 per fire-panel zone or PLC input.
Fire panel / PLC4 inputsOne device each
ZONE / AI-01FD-01
ZONE / AI-02FD-02
ZONE / AI-03FD-03
ZONE / AI-04FD-04
Typical 4/C shielded home run:+24 VDC0 VDCZone / 0–20 mA signalSignal returnAlarm and EOL resistors per selected panel interface
Sense-Ware requires at least 3- or 4-wire shielded cabling depending on the interface and instructs that no more than one flame detector be connected per zone. The longest modeled flame-sensor home run is FD-04 at approximately 554 ft. Final wiring must select either the fire-panel resistor method or the PLC 0–20 mA method; do not combine the two details.
05C
Beacon one-line
Four-conductor control cable routed as two isolated 24 VDC pairs. Each color circuit loops through seven separate beacon housings connected electrically in parallel.
Control panel24 VDCTwo outputs
Red outputPair 1 · R+ / R−
RB-01RB-02RB-03RB-04RB-05RB-06RB-07EOLif supervised
Yellow outputPair 2 · Y+ / Y−
YB-01YB-02YB-03YB-04YB-05YB-06YB-07EOLif supervised
4/C cable:Pair 1 = red positive / negativePair 2 = yellow positive / negativeLoop-in / loop-out · loads in parallel
Reference basis only. The corrected route places YB/RB-01 and YB/RB-02 on the B307B exterior, keeps YB/RB-03 at the northwest B307 corner, and produces an approximately 722-ft complete beacon loop. Do not connect the beacons electrically in series or share a negative between color circuits unless the approved control-panel design specifically requires it. Confirm output supervision, EOL resistor values, conductor size, voltage drop, and final operating sequence before installation.
05D
Horn/strobe one-line
Two E2S D2xC2X10 combination units on a supervised 24 VDC notification circuit, with each housing’s factory horn-to-strobe links retained.
Notification output24 VDCSupervised pair
Horn + strobePair · N+ / N−
HS-01factory linkedHS-02factory linkedEOLif supervised
Typical 2/C notification pair:Switched +24 VDC0 VDC returnLoop-in / loop-outHorn and strobe operate together
The E2S combination unit is factory wired so the horn and strobe operate together. HS-02 has an approximately 536-ft modeled panel-to-device run and requires a final voltage-drop check at the control panel’s minimum output voltage. If the owner requires independent horn and strobe operation, remove only the manufacturer-designated factory links and provide separate control pairs—typically 4/C—after the control sequence is approved.
06
Routing basis
Every device box connects to one of two segregated 3/4-in. RMC systems. Shared raceway routing does not mean the field devices are electrically connected in series.
- 01
Detection RMC
Gas monitors and flame detectors share the modeled 3/4-in. RMC pathway. The cable order summary conservatively carries a dedicated conductor set for each of the 17 modeled gas-sensing points until the owner confirms how the 9 RFQ-listed X5000 transmitters pair sensors and land at the control system. Each flame detector uses its own zone or PLC input.
- 02
B307 blue-cabinet terminations
The blue cabinet is inside B307 between column lines 2 and 3. All twelve labeled ¾-in. new-work conduits drop from the shared north rack and stop at this cabinet. Existing detection and notification conduits continue underground from the cabinet to the B307B electrical room; they are shown for continuity but excluded from new-work quantities.
- 03
Notification RMC
Beacons, strobes, and horns use a separate 3/4-in. RMC system with parallel column drops and individual box connections.
- 04
Exterior gutter pathway
The Building 307 home-run RMC systems stop at separate transitions on the east edge. The wiring then continues in the orange exterior gutter, which drops at the 90-degree turn and runs to the end of the fuel yard at approximately +3 ft above grade. The fuel-yard junction box remains a pull point with no assumed splices. Only the short gutter-to-device connections are RMC.
Coordination note
Conceptual model—not construction-issued BIM.
Final route lengths, equipment coordinates, gutter loading, classified-area seals, and mounting details require field verification and approved construction drawings.
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