code calculations, construction drawings and elevation/section graphics…
TRANSCRIPT
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code calculations,construction drawings
and elevation/section graphics…
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RENDERED ELEVATIONS AND BUILDING SECTIONS
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CODE CALCULATIONS
cap energy usagevary by statevary by project type
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Energy Consumption
– Lighting consumes ~23% of the electricity used in all buildings
– ~20% of electricity required for air-conditioning results from heat generated by lamps
– ~ ½ electricity used in commercial buildings is for lighting systems
– ~10% of electricity consumed in residences is used for lighting
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life cycle consumption standards
• ASHRAE, LEED, etc.• Cradle to cradle, energy star, etc.• hazardous material disposal• planning: HVAC and daylighting
integration
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Light Pollution and Trespass
• Light pollution: – Excessive glow of light in night sky– excess lighting; sources aimed in inappropriate
directions– dark sky society
• Light trespass:– Glare onto an adjacent property
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THE MASSACHUSETTS ENERGY CODE
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Lighting Power Density (LPD) Maximum Power Usage
• Code specifies numeric maximum• By Occupancy type• Watts/sq. ft.• Use formula from Code• Use Room finish schedule• Add up totals from RCP, total watts per
luminaire• Adjust fixture total or lamping
appropriately if you’re over
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From CMR 780
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calculations using schedule
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CONSTRUCTION DRAWINGS
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lighting equipment schedule
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most typical fields:
• Letter• Symbol (from RCP)• Type (mounting + lamp +
distribution)• Lamp (col’s for number and wattage)• Manufacturer• Catalog number• Finish• Mounting• Notes
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DETAIL DRAWINGS
draw dimensional relationshipsdraw mounting systemnote materials (construction and finish)note lampingnote mounting
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Stretched ceiling
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Special conditions
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Special conditions
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Special conditions
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ACT meeting GWB wall
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ACT hung off structure
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DIMMING/SWITCHING PLANS
indicate location of controls and groupings of fixtures onto circuits
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Switching:Considerations
• Consider location and appearance of controls• Consider fixture grouping• Consider operation
– Switched, dimmed, remote controls, PDA controls– Pre-set scenes at control– Pre-set scenes at central dimming station, computer interface, or
telephone activation• Consider operators
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SYSTEMS COORDINATION
structural system limitationHVAC system implications
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Steel yourselves
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Concrete systems
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Most restrictive
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Heating and A/C symbols
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Air systems: how they work
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Mechanical Plans from the Engineer
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You need the duct sizing and register locations
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Diffusers
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Supply air diffusers
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Linear diffusers and return grilles
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average dimensions
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7’5’ maximum from side walls15’ OC maximum
Sprinkler spacing Rule of Thumb
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Alarms: NFPA 72 indicates where needed
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Other rules of thumb
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Wireless
• Wireless repeaters – Every 150’ within direct line of sight– 50’ through interior partitions– Not at all through masonry/exterior walls– Library stacks are worst
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A/V equipment
• TV’s, projectors, etc• Sight lines are critical (for viewer and
projector)• Speakers: – Coverage varies greatly by system– One in a room– Wall or ceiling mtd– Stereos, CD’s, etc: within the room
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Smoke and/or fire detectors
• One in every enclosed space• One every 50’• Heat and/or optical sensitivity• Hard-wired• Fire detectors required in some specific
occupancies (hazardous)
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Exit signage and lighting
• Wall or ceiling mtd; can be lit internally• At every exit door• Every 100’• Battery-powered lights• Strobe lights with audible alarms in bathrooms
and egress corridors
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Smoke detectors
• Hard wired• At least 1 in all occupied spaces• Every 30’/900sf• Inside ductwork
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Manual fire alarms
• Within 5’ of all exits• Specific height• Must not project into space more than 4”
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Visible/audible alarm signals
• Within 5’ of all exits• Along path of travel
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Fire extinguishers
• Within 30’ of cooking equipment• Buildings under construction• Open flames• Labs, computer rooms, generator
rooms
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so for this project…
• generate the schedule–manufacturer’s data for decorative only– all lighting equipment included– include exit signs (find a product)
• use schedule to calculate LPD• switching plan with Key– lighting and switches– exit signage and any other equipment– HVAC