| Emergency Lighting - System Design |
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The marking of the specified building features in escape routes has been modelled on the design criteria of the International Building Code (6) Building features in an escape route shall have photoluminescent markings as follows: |
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1. Steps in Aisles & Stairways The horizontal leading edge of all steps should be marked including the landing step at the top of any flight of steps. (Fig 2.5) 2. Handrails The top surface of all handrails is marked with a strip. The strip extends along the entire length of the handrail to within 100mm of the ends. Where a handrail bends or turns corners there is a gap of no more than 100mm (Fig 2.5) |
Fig 2.5 Step and handrail markings
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3. Stairway Landings The perimeters are marked either on the floor within 100mm of the wall or on the wall within 100mm of the floor (Fig 2.6) |
Fig 2.6 Both steps and landings must be marked |
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4. Corridors The perimeters are marked either on the floor within 100mm of the perimeter or on the wall within 100mm of the floor. Markings continue across the floor of all doors that do not form part of the escape route. If the perimeter markings are on the wall they continue across the surface of any door that does not form part of the escape route. (Fig 2.7) |
Fig 2.7 Markings continue across non-escape doors
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5. Ramps Ramps of less than 3 metres wide are marked on the perimeters only. If a ramp is between 3 metres and 6 metres in width, the centre of the ramp should also be marked with on 68mm diameter disk every 3 metres along the ramp. If a ramp is wider than 6 metres, create evenly spaced lines of photoluminescent discs with a maximum space between each line of 3 metres. (Fig 2.8) |
Fig 2.8 Ramp with photoluminescent discs, handrails & floor markings. |
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6. Open Spaces Where there is an obstacle free path through an open space, the perimeter of the path is marked. Concourses generally have multiple paths from vomitories intersecting therefore a clear path may not exist and other emergency lighting must be used in areas such as this. 7. Obstacles Obstacles at or below 2 metres in height and projecting more than 100mm into an escape route are identified with hazard markings (Fig 2.9) |
Fig 2.9 Obstacles at or below 2 metres are marked with a photoluminescent hazard marker |
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8. Escape Doors and Entries to a Safe Place Door frames have a solid continuous stripe. Door handles and panic bars have markings installed behind, immediately adjacent to, or on the hardware (Fig 2.10) |
Fig 2.10 Door showing photoluminescent marking around the frame
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9. Signage Directional signage at least 100mm x 100mm is installed not more than 500mm above the finished floor to clearly indicate direction changes (Fig 2.11). Emergency Exit signage is designed to meet the requirements of the particular jurisdiction. |
Fig 2.11 Ramp showing photoluminescent marking and directional signage
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(6) International Building Code Section 1024, Exit Path Markings
