Essay 1-2 pages Cost & estimating
Ssult89
Lecture15-MEP.pdf
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MEP
Lecture 15
HVAC (Mechanical System)
Usually subcontracted out
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Includes
Heating equipment
Cooling equipment
Thermostats
Ductwork
Diffusers
Registers
Humidifiers
Dehumidifiers
Fans
Insulation
Return air
Fresh air
Louvers
Associated piping
Associated wiring
Coordination Requirements
Underground utilities
Location, size, excavation by whom, from where?
Equipment
Method of support, location, by whom, anchors, access for receiving and installing, size limitations, flues, roof curbs.
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Coordination Requirements
Piping
Wall sleeves, size limitations, chases, in walls, under floors, floor sleeves, expansion compensators, access doors.
Ductwork
Sizes, support, access doors, drops, outlet sizes, chases, outside air louvers, roof curbs, lintels.
Coordination Requirements
Mechanical-electrical responsibility
Who is doing what?
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Coordination Requirements
Finishes
Field or factory?
Scheduling
Work to be done? When required? Job to be completed on time-who, why, when?
Assembly
Components grouped into assemblies
May be used in
Residential
Light commercial
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Detailed Estimate
Account for all the parts and pieces
May use allowances for some small items
Electrical
Often governed by the National Electrical Code
Usually subcontracted out
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Includes
Wiring
Conduit
Transformers
Switches
Panel boards
Breakers
Outlets
Control panels
Temporary wiring
Etc.
Coordination Requirements
Underground utilities
Location, size, excavation by whom, from where?
Equipment
Recessed depth, size of access openings, method of feed, supports, by whom, size limitations.
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Coordination Requirements
Distribution
Outlet locations, materials, method of feed, chases, in walls, under floor, overhead, special considerations.
Terminal fixtures and devices
Location, method of support, finish, color, and material.
Coordination Requirements
Scheduling
Work to be done? When required? Job to be completed on time-who, why, when?
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Assembly
Components grouped into assemblies
May be used in
Residential
Light commercial
Single-pole switch assembly
Single-gang box
Single-pole switch
Cover plate
Detailed Estimate
Account for all the parts and pieces
May use allowances for some small items such as wire nuts
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Conduit and Wiring
All three dimensions
Two from plans
Must include up and down
Location must align with openings in the structural member
Parallel to the buildings walls?
Additional wiring is also needed at each end to connect the wiring to equipment
Panels
Conduit
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Plumbing
Often governed by the International Plumbing Code
Usually subcontracted out
Includes
Lavatories
Water closets (toilets)
Showers
Bathtubs
Sinks
Water heaters
Dishwashers
Garbage disposals
Water coolers
Piping
Water
Gas
Drain-waste-vent
Grease traps
Trenching
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Coordination Requirements
Underground utilities
Location, size, excavation by whom, from where?
Mechanical room equipment
Supports required, location, anchors, by whom?
Distribution
Wall system, hangers, chases, in wall, roof, vents, access doors.
Coordination Requirements Fixtures
Method of support, feed, outlets, built-in, floor drains, vents.
Finishes
Factory or field.
Specialty equipment
Field provisions, storage.
Scheduling
Work to be done? When required? Job to be completed on time-who, why, when?
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Assembly
Components grouped into assemblies
May be used in
Residential
Light commercial
Assembly
Toilet assembly
30 feet of 1/2-inch supply pipe with fittings
1/2-inch by 3/8-inch shutoff valve
3/8-inch by 12-inch braided supply line
Toilet seat
Wax gasket
30 feet of 3-inch waste line with fittings
$150 fixture allowance
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Detailed Estimate
Account for all the parts and pieces
May use allowances for some small items such as small fittings
Piping
All three dimensions
Two from plans
Must include up and down
Location must align with openings in the structural member
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Fire Sprinklers
Bid same as plumbing
