LARE 2 Flashcards
floor area ratio (FAR)
total building area / parcel area; area of all floors of a building compared to total site area
promontory
point of high land that juts out into a large body of water
hydrosphere
combined mass of water on, under, or above Earth’s surface
fen
peat-forming, groundwater-fed wetland; less acidic than bogs, higher nutrient levels; not forested
set-aside
type of public-project contracting process or requirement for small or disadvantaged businesses (not real estate)
variance
used to formally acknowledge and address lot size or shape variation in relation to other, similarly-designed lots; modification or waiving of provisions of code as applied to a specific property
hydric soil
highly saturated soil where little to no usable oxygen is present (anaerobic)
traversing
survey technique that describes area of land by means of a series of connected lines; may be open or closed (e.g. roads = open, property bounds = closed)
stadia measurements
way of determining distance based on height observation of a 6ft object; technique of distance measurement where the observer reads the intercept subtended on a graduated rod between two marks on the reticle of the telescope, based on the height observation of a 6’ object
leveling
surveying process of determining the difference in elevation between two or more points by measuring the vertical distance between two points; typically used to determine the topography of a site
chaining
process for taking vertical measurements; typically done on extremely hilly sites; one Gunter’s chain (surveying tape) = 66’ long; convenient in cadastral surveys bc 10 sq chains = 1 ac
fasciation
plant growth disorder causing single stem to appear as if it were several stems fused together; caused by frost, insect, or physical damage to a stem early in development
plasticity (soil)
ability of a soil to become deformed without breaking apart
elasticity (soil)
ability of a soil to return to original shape after being subjected to a load condition
liquid limit (soil)
minimum moisture content at which soil will flow under its own weight
USGS quadrangle map
shows structures, topo, water, roadways; township, range, and section information; new construction since last printing generally shown in purple; 1 degree of latitude and 1 degree-30min to 1 degree-35min longitude
assessor’s map
used to locate buildings and land in order to establish or determine their worth
ADA walkway slopes (no handrails)
cross slope < 2%; overall slope < 5%
geodetic survey
when surveys are of such a wide extent that curvature of the earth is important; makes use of a coordinate system to locate points on earth
metes and bounds
legal description of a parcel; starts from point of beginning then traces outline of the property’s boundary lines until there is closure in the legal description. Natural and artificial monuments can both be used as metes and bounds (e.g. rivers, roads, trees, etc.)
cadastral survey
made to resurvey or retrace the boundaries of municipalities and of state, federal jurisdictions and other public lands within the Public Land Survey Systems of the US
boundary survey
made by traversing; process of locating property lines by establishing property corners of a parcel for building permit purposes, locating easement lines, or resolving property disputes
abatement
removal or elimination of a problem, usually significant to public health and safety
arterial (street type)
generally have 2 or more moving lanes, traffic signals, may be truck or bus routes; intended to move traffic through an area; major has network for inter- and intra-city traffic, minor is secondary and moves traffic intra-city
collector (street type)
connect residential and local streets and neighborhoods to each other, bringing traffic out of neighborhoods and onto arterial streets
building intensity standards
consider bulk and concentration of physical development uses permitted in a district. e.g. lot coverage (LC), floor area ratio (FAR), open space ratio (OSR), height landscape volume ratio (LVR), building volume ratio (BVR)
chicanes
midblock curb extensions on alternating sides of the street to create s-curves and calm traffic
boulevard
street lined with trees or constructed with a landscaped middle
cluster development
pattern of development in which industrial/commercial facilities and homes are grouped on parcels to leave other parts of land undeveloped. ZOs often allow smaller lot sizes if structures are part of cluster development where some land is left as open space
covenant
written agreement between two or more parties in which a party or parties pledge to perform or not perform specified acts on a property, usually found in real estate documents
restrictive covenant
agreement included in a deed that restricts/limits a property buyer’s future use of that property
conveyance
written instrument used to transfer or convey title of a property i.e. a deed
deed
document that transfers ownership of real estate, containing names of old and new owners, a legal description of the property, and signed by the seller
deed of trust
legal document that conveys title to a real property to a 3rd party, who holds the title until the owner has paid the debt in full (i.e. mortgage)
quit claim deed
Used for transfers between family members, gifts, to eliminate clouds on a title, or other unusual circumstances
open space ratio (OSR)
proportion of the site required to remain as open space used for rec, ag, or resource protection
ordinance
formal legislative enactment by a governing body; can’t be in conflict with any higher form of law
planned unit development (PUD)
project or subdivision that consists of common property and improvements that are maintained by an owner’s association for the benefit and use of individual units within
sight-line triangle
a setback at a street-driveway intersection that restricts anyone from placing view obstructions at the height of the driver’s line of sight, at a specified horizontal distance related to street design speed
specific area plan (SAP)
legal tool for detailed design/implementation of a defined portion of an area in a master plan; may include all detailed regulations, conditions, programs, and/or proposed legislation that may be necessary or convenient for the systematic implementation of any masterplan element(s)
work plan
defines work to be completed; includes deadlines, cost per task, parties responsible for work
thematic map
single attribute is mapped in ranges usually graphically represented in colors (e.g. plant hardiness zones)
chloropleth map
illustrates elevation changes by creating a few elevation changes, usually represented by color; or, type of statistical thematic map that uses pseudocolor, i.e., color corresponding with an aggregate summary of a geographic characteristic within spatial enumeration units, such as population density or per-capita income
true north
directional line between any position on earth to the True North Pole; longitude/meridian lines are all True North
magnetic north
direction to the Magnetic North Pole (southern pole of earth’s central magnet); shown by a needle on a compass
grid north
established by vertical grid lines during map making; symbolized with GN or Y
hard corner
center of a 15-minute map of an area; corner where both lat and long end in 30-degree seconds; only one hard corner per 7.5-minute map
declination chart
shown at the bottom of a topo map to show differences between true, magnetic, and grid North
base plan
plan done first to move forward with grading, utilities, site analysis; includes topo, property lines, building locations
function diagram
e.g. program or bubble diagram; comes before a site plan, considers connections and program relationships but not scale or location
Phase 1 Environmental Site Assessment (ESA)
applies to superfund sites with hazardous materials. Per ASTM: it requires a more thorough review of records, a site visit, an interview with owner/operator of property, and report documentation
soil inventory
includes pH, permeability, erosion potential, depth to bedrock, depth to seasonal high water table
angle of repose
Max angle of a stable slope for a given soil, determined by friction, cohesion, and shapes of particles
bearing capacity (soil)
measure of a soil to decrease in volume under the pressure of a given weight (use for sizing footings)
compressive strength
Max load a material can sustain before crushing or buckling
liquefaction (soil)
when soil begins to act like liquid (earthquakes)
loam
mix of 2 or more soil ingredients; loam soils typically have good balance between sand and silt, little clay; 40% sand, 40% silt, 20% clay
mineral soil
properties determined mostly by mineral matter; usually <20% organic matter
shear strength
Soil’s resistance to the pressure of a downhill force
unified soil classification system (USCS)
most widely used; classifies soil according to properties that affect use as construction material; grain size distribution, plasticity index, liquid limit, organic matter content…low liquid limit > high, narrow range between plastic to liquid better
AASHTO classification system
soil classification system of the American Association of State Highway Officials; defines soil by suitability for highway sub-grade use; groups A-D: A = sand/gravel, high infiltration rate > D = slow infiltration, clays
friable
soil that is easily broken into smaller pieces with little effort
common plant pH range preference
5.5-7
soil type erodability
silt > clay > loam > sand
igneous rock
formed from solidification of molten rock material; e.g. granite, basalt, pumice
sedimentary rock
formed when sediments are deposited by wind, water, gravity, etc. and pressure forces them together into rock layers; e.g. limestone, sandstone, shale, most common rocks
shrinkage limit
water content expressed as a percent of weight of oven dried soil - can’t get any drier
Atterberg limits
soil changes from solid -> semi-solid -> plastic -> liquid as water is added to dry soil
proctor test
used to determine max density of soil needed for project; tests effects of moisture on density; expressed as % of density
modified proctor method (soil testing)
uses equivalent energy or comparative effort; requires 4.5x more effort than standard proctor method; used where foundations will go and where no settlement can be tolerated