High Performance Building Systems
A barrier wall can store an amount of water to deal with it over a period of time.
True
It is best practice to create a continuous thermal layer of insulation as well as a continuous air and moisture barrier around the entire envelope of the building to ensure energy efficiency and durability.
True
Until recently, buildings built in the past 30-50 years in developed countries such as the United States are less durable and will need replacing.
True
Which of these typically causes the most damage in a building?
Water
Is there a problem with this strategy for the HVAC?
Yes, you receive about a 10% energy penalty.
Drawing #1 is a better way to create a joint to prevent capillary action.
You want the sealant closest to the inside of the building to get out of the sun.
Building consumes approximately ________ of the total energy used and ________ of all the electricity consumed?
1) 40% 2) 2/3
What is the definition of High Performance Construction?
1) A building that integrates and optimizes all major high-performance building attributes, including energy efficiency, durability, life-cycle performance, and occupant productivity. 2) A building or process that creates a sustainable environment capable of supporting ongoing life. 3) A set of requirements for less-intensive more energy efficient buildings to reduce energy consumption and provide durable buildings.
Layers of the Envelope: (From outside to inside)
1) Exterior cladding/Roofing Membrane 2) Furring strips of fastening system 3) Air space/drainage area 4) Insulation 5) Sheathing 7) Structure/ backup wall 8) Insulation in wall/roof cavity 9) Interior furring 10) Interior sheathing/finish wall 11) Trim details
Which one of these is not a sustainable practice?
1) Hauling waist to a landfill 2) Trading in a car every 2 years 3) Leaving the lights on 4) Eating three large meals a day ALL OF THE ABOVE
What are some key sustainability issues?
1) Population growth. 2) Standards of living increases so does resource consumption. 3) Urban growth is accelerating (60% of world pop. estimated to live in urban areas in 2030).
Sources of water
1) Rain 2) Surface Water 3) Groundwater 4) Occupants and occupant activities 5) Atmosphere 6) Services (Plumbing) 7) Building Materials 8) Snow and melt water (Ice damming)
Basic functions of the enclosure.
1) Support - Resist and transfer physical forces from inside and out 2) Control -Control mass and energy flows 3) Finish - Interior and exterior surfaces for people
What are some factors of a failing building ?
1) Water 2) Heat 3) Ultraviolet Light 4) Insects Water issues dominate by a wide margin!
What percentage of all energy is consumed by buildings?
40%
Buildings consume..
40% of all energy and 67% of all electricity.
What is the yearly average rainfall in Mississippi?
50-60 Inches
What percentage of the population is estimated to live in urban areas in 2030?
60%
What is sustainable building?
A sustainable building si one that can be produced and continue to be operated over the long term without adversely affecting the natural environment necessary to support human activities in the future.
The ripple effect
Consumption increases with an increase in "progress". Developing countries are following our path in consumption.
What are the major causes in air leakage in a building?
Cracks/gaps in materials, openings in the envelope and pressure differences between inside and outside.
Which equation accurately describes an environmental impact?
Environmental impact = population x consumption/person x damage rate/unit of consumption. Increase population + increasing consumption per capita - increasing damage per action - environmental impact.
Cohesive bond is stronger than adhesive bond.
False
Our standard of living has increased and our consumption of resources is reduced.
False
Drawing #2 is a better detail (The weather stripping was on the outside of the window.)
False (The correct way to have weather stipping is to have it on the inside of the window)
What is high performance construction?
High performance is a set of requirements for less resource-intensive, more energy-efficient, buildings to reduce ongoing building-related energy consumption, provide durable and value based buildings.
Cold Air
Higher pressure
Warm Air
Lower pressure
Best drip edge
Made of metal, has sharp turns and causes problems for capillary action.
What climate zone are we in?
Mixed Humid
How would increasing the energy efficiency of a building compromise its durability ?
Moisture can be trapped in the building envelope and Insect infestations may be increased.
Which one of these would not aid in sustainability?
Population Growth
Control the elements
Rain, Air/vapor, Heat
The best way to achieve durability of a system is to?
Research and understand past failures,Test it, make modifications.
