Project Planning & Design (PPD) Flashcards
What contour types point uphill?
Swales
Which building orientation is best for passive solar design in temperate climates?
Slightly east of south
Automobile ramp slope
10% preferred, 15% max
What is the slope of a ramp transition?
1/2 of the slope of the main ramp
When is a handrail required at a ramp?
Vertical rise is over 6”
Slope in parking lots
Typically 2-3%. 1.5% min and 5% max
East rotation from south per climate region
Cool: 12°
Temperate: 17.5°
Hot arid: 25°
Hot humid: 5°
External Load Dominated Building
A building with low occupancy that will experience the bulk of energy loss/gain through the skin of the building (homes)
Internal Load Dominated Building
Building whose energy loss/gain is most realized by activity within the building - occupants, lighting, machinery, etc (office buildings)
What type of insulation should not be used due to its ozone depleting properties?
Hydrochlorofluorocarbons (HCFCs)
Superinsulation
Tightly sealing all cracks and joints after applying insulation
Stack effect
Differences in air temperature at top and bottoms of the building causing infiltration and exfiltration
What is a perm?
One grain of moisture per hour per sf per inch of mercury difference in vapor pressure:
1 perm = 1g / hr-sqft-inch Hg
What is the minimum perm for an air barrier to be considered to be vapor permeable?
5 perms
Typical soil depth of an extensive green roof
6 inches
Typical soil depth of an extensive green roof
12 inch minimum
What is Low-E glass?
Low emissivity glass that contains a film in the double glazed cavity
