module 12 - improvement exercise
TRANSCRIPT
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Module 12.1
Improvement exercise
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Learning Outcomes
On successful completion of this modulelearners will be able to
- Demonstrate an application of the combined
knowledge gained in previous modules.
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Introduction.
A friend has approached you for advice. They show you a set of plans for a single storey
two bedroom dwelling.
The dwelling was originally built more than 10
years ago.
The specifications for the construction details,insulation, ventilation, space heating and water
heating, etc are not up to date. You are asked to write new specifications.
Sorry do not build this style of house is notan acceptable reply.
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Plan view
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Front elevation - north
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Rear elevation - south
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End view east.
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End view - west
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Sectional elevation.
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Existing specifications.
Floor insulation.Concrete floor slab with 50mm insulation.
U-value 0.33 W / m2 K.
Wall insulation.Cavity block work wall.
100mm cavity and 50mm partial fill insulation.
U-value 0.40 W / m2 K.
Roof insulation.
150mm mineral wool insulation between ceilingjoists. Ventilated roof space.
U-value 0.27 W / m2 K.
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Existing specifications - continued.
Ventilation.Natural ventilation.
Windows + glass doors.
Aluminium frame without thermal break.
Double glazing with 16mm air filled gap.
Overall window U-value 3.0 W / m2 K.
Lighting.
100% incandescent bulbs.
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Existing specifications - continued.
Water heating.Primary water heating.
Electric water heating inside a 100 litre cylinder.
Secondary water heating.
From a back boiler at the open fireplace in theliving room. (winter period only).
Fireplace using a mix of coal and wood fuels.
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Existing specifications - continued.
Space heating.Primary space heating.
Electric storage heaters in all rooms.
Secondary space heating.
From a back boiler at the open fireplace in theliving room. (winter period only).
Fireplace using a mix of coal and wood fuels.
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Improvement floor insulation.
Original U-value 0.33 W/m2
K.
Current local building regulations?
Passive house specification?
Recommended construction detail?Consider also thermal bridging and air tightness.
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Improvement wall insulation.
Original U-value 0.40 W/m2
K.
Current local building regulations?
Passive house specification?
Recommended construction detail?Consider also thermal bridging and air tightness.
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Improvement roof insulation.
Original U-value 0.27 W/m2
K.
Current local building regulations?
Passive house specification?
Recommended construction detail?Consider also thermal bridging and air tightness.
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Improvement ventilation.
Original ventilation method NaturalOriginally building pressure test. No test.
Current local building regulations?
Passive house specification?Recommended ventilation detail? Pressure test?
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Improvement windows.
Original windows - aluminium 3.0 W/m2
K.
Current local building regulations?
Passive house specification?
Recommended window detail?Consider also thermal bridging and air tightness.
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Improvement Lighting.
Original lighting. Incandescent.Current local building regulations?
Passive house specification?
Recommended lighting detail?
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Improvement primary water heating.
Original primary water heating ElectricCurrent local building regulations?
Passive house specification?
Recommended primary water heating detail?Consider renewable energy and controls.
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Improvement secondary water heating.
Original secondary water heating Fire placeCurrent local building regulations?
Passive house specification?
Recommended secondary water heating detail?Consider renewable energy and controls.
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Improvement primary space heating.
Original primary space heating ElectricCurrent local building regulations?
Passive house specification?
Recommended primary space heating detail?Consider renewable energy and controls.
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Improvement secondary space heating.
Original secondary space heating Fire placeCurrent local building regulations?
Passive house specification?
Recommended secondary space heating detail?Consider renewable energy and controls.
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Improvement others.
OriginalCurrent local building regulations?
Passive house specification?
Recommended detail?
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Improvement others.
OriginalCurrent local building regulations?
Passive house specification?
Recommended detail?
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Improvement others.
OriginalCurrent local building regulations?
Passive house specification?
Recommended detail?
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Module summary
None.
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References.
None.