Safety systems coordination

Building 307 safety systems — coordination model

Detection RMCNotification RMCEnclosed cable trayUndergroundLELH2O2COFlameJB / transition8-ft trapeze support

GDGas detectorFDFlame detectorYBYellow beaconRBRed beaconHSHorn / strobeJBJunction boxRMCRigid metal conduitCTEnclosed cable tray

B307B → underground detection + notification → main JBB307 perimeter RMC · 45′ eaves / 50′ ridgeEnclosed cable tray continues to fuel-yard end at +3′ · vertical RMC to devices

Site isometric · Full vertical orbit · One finger rotates · Pinch to zoom

Finished floor0′-0″Approach tray+18′-0″Fuel-yard tray+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.

Coordination & quote summary

B307B split-room layout

The building is see-through with an east–west center partition. The south half facing B307 is the control room; the north half facing away from the project is the electrical room.

Detection circuit

17 gas-detector points are shown in one continuous series path. Four flame detectors share the detection raceway system.

Notification circuit

Seven yellow beacons, seven red beacons, and two horn/strobes use a segregated 3/4-in. RMC system.

Oil-pit detector route

The detection RMC runs down the south structural column, continues toward the pit at low level, offsets to the detector, and drops to its mounting elevation.

Fuel-yard transition

The orange enclosed cable tray approaches at +18 ft, drops at the turn, and continues to the end of the fuel yard at approximately +3 ft above grade.

Fuel-yard verticals

Every fuel-yard device and junction box connects to the orange tray with a visible vertical green detection or purple notification RMC run.

Site-photo structural context

The canopy now shows cream steel I-frames, ribbed roof deck, exposed purlins, concrete pedestals, the yellow crane beam, slab joints, bollards, and the dark exterior rack visible in the field photos.

Fuel-yard end rack

FD-04, YB-07, RB-07, and HS-02 are mounted at +20 ft on the dedicated rack. GD-17 is mounted low at +1 ft 6 in above grade.

Branch supports

Horizontal branch raceways show strut and all-thread trapeze assemblies at a maximum 8-ft spacing. Vertical runs require column-mounted strut clamps.

Support hardware takeoff

The model includes 53 trapeze racks, 108 vertical strut racks, and a six-post fuel-yard device rack with its mounting hardware.

Device branch-run takeoff

37 modeled device branches total approximately 810 ft of conduit, averaging 21.9 ft per branch. Shared perimeter, feeder, and tray pathways are excluded.

17Gas points04Flame14Beacons02Horn/strobes

Conceptual coordination geometry. Final routes, supports, seals, classifications, and mounting locations require field verification.

Installation scope

Owner-furnished devices with contractor-furnished raceway, conductors, boxes, fittings, supports, and complete installation.

Gas-detector points

LEL · H2 · O2 · CO

Flame detectors

Sense-Ware UV/IR

Safety beacons

7 yellow · 7 red

Horn / strobes

White combination units

Device branch-run conduit takeoff

Approximate centerline lengths measured from the modeled branch geometry, grouped by raceway system.

SystemBranch runsModeled conduitAverage per run

Detection21512 ft24.4 ft

Notification16298 ft18.6 ft

Combined total37810 ft21.9 ft

Branch-run quantity includes 17 gas detectors, 4 flame detectors, 14 beacons, and 2 horn/strobes. Horizontal branches are supported with strut and all-thread trapezes at maximum 8-ft spacing; vertical drops use column-mounted strut clamps. The takeoff excludes shared perimeter RMC, general column drops, B307B underground feeders, exterior cable tray, fittings, field offsets, rack steel, support hardware, and material waste. Verify all lengths in the field before purchasing.

Support racks & hardware

Conceptual quantities generated from the modeled branch supports and the +20-ft fuel-yard device rack.

Assembly / hardwareQuantityBasisDrawing use

Horizontal trapeze racks538-ft max spacing53 strut crossbars

All-thread rods1062 per trapezeField-cut length

Trapeze attachment hardware106 clamps · 212 nuts · 212 washers2 support points per rackVerify structure type

Vertical strut racks1088-ft max spacing108 RMC clamps

Fuel-yard rack posts / beams6 posts · 2 beamsDevices at +20 ftStructural steel

Rack foundations6 base plates · 24 anchors4 anchors per postFinal engineering required

Rack connection hardware12 plates · 48 bolts2 plates per post4 bolts per plate

Device mounting brackets4End-rack device groupFD · YB · RB · HS

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.

Routing basis

Every device box connects to one of two segregated 3/4-in. RMC systems. The gas detectors form one continuous series circuit.

01
Detection RMC
Gas monitors and flame detectors share one 3/4-in. RMC system. All 17 gas-detector points are shown in one continuous series path, including the six-point B307B group and two east/fuel-yard LEL points.
02
B307B underground connection
B307B is shown with transparent walls and an east–west center partition: control room on the project-facing south half and electrical room on the far north half. Separate detection and notification conduits rise at the safety-system panel, run underground to the B307 main junction box, then continue to their field circuits.
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 pipe-rack pathway
The two systems transition separately at the east edge of B307 and continue in the orange enclosed cable tray. The tray drops at the 90-degree turn and continues to the end of the fuel yard at approximately +3 ft above grade. All device connections outside the tray remain in vertical RMC.

Coordination note

Conceptual model—not construction-issued BIM.

Final route lengths, equipment coordinates, tray loading, classified-area seals, and mounting details require field verification and approved construction drawings.

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