Current Planning Flashcards
Scales
a small-scale map displays a large land area with very little detail. A large-scale map shows a limited land aera in great detail. There are a number of common scales. The US Geological Survey uses the 1:24,000 scale
- 1:24000 means that 1 inch represents 2,000 linear feet
1:62,500 means that 1 inch represents 0.98 miles
1:500,000 means that 1 inch equals 7.89 miles
1:2,000,000 means that 1 inch equals 31.57 miles
General Slope Guidelines for Urban Development
0-0.5% = no drainage, not suited for development
0.5-1% = no problems, ideal for all types of development
1-3% = slight problems for large commercial areas; acceptable for residential
3-5% = major problems for commercial/industrial/large scale residential
5-10% = suitable only for specially designed development
Contour Lines
Are the lines of equal elevation. A contour interval is the distance between contour lines. The closer together the contour lines are, the steeper the terrain. Slope is calculated by the change in elevation divided by the horizontal distance.
Slope
To calculate the slope, two points are identified. The slope is the change in the y-coordinate divided by the change in the x-coordinate. For example, if we have a height of 1 foot at point A and a height of 2 feet at point B, then the difference is 1 foot (also known as the rise). For the distance, point A is 2 feet away from point B (Also known as the run). By dividing 1 by 2, we get an answer of 0.5. Multiply this number 100 to get the percent slope. In this example. a slop of 50% indicates that the site is not ideal for development.
Floor Area Ratio
Floor area ratio (FAR) is the ratio of the gross floor area of a building to its ground area. It is used primarily to determine building density on a site, i.e. the size of a building in relation to the size of the lot where it sits. The floor area of the building is measured to the middle of the outside walls and includes the inside walls as part of the calculation. Depending on the locality, floor area sometimes excludes unfinished basements, carports, structure parking, mechanical rooms and other non-habitable spaces.
For instance, if a 20,000 sf parcel has a FAR limit of 0.5, then the floor area of the building or house on the site may not exceed 10,000 sf. This FAR could be achieved with either a single-story, 10,000 sf strucutre or a 2 story structure with 5,000 sf per floor.
Site Planning
Site planning includes a range of factors including site selection, transportation, earthwork and utilities, and design of the site. Individual land uses have different site planning criteria. For example, a shopping center location would depend on the market, accessibility, distribution of the population, buying power, the location of competing shopping centers, access to the site, and time to the site. A major shopping center is typiocally on major roadways. Shopping centers serve different size populations. For example, a neighborhood center would provide access to a grocery store. Where a community center may have department stores, while a regional center would have multiple major department stores.
Subdivision
a subdivision is the division of land into two or more parcels, sites or lots, for the purpose of transfer of ownership, development, or other forms of valuable interest. This definition varies from state to state and may include minimum acreage requirements.
Plat
A plat is a map of a tract or parcel of land
Replat
a replat allows for lots to be subdivided further or added back together
Amending Plat
An amending plat corrects errors or adds additional information to a plat
Vacating Plat
allows for a plat to be terminated prior to the selling of any lots
Preliminary Plat
a preliminary plat is a to-scale mechanical drawing with precise topography and prescribed intervals showing the calculated location of all lots, streets, drainage patters, facilities, and proposed dedications.
Final Plat
a final plat is the approved preliminary plat with all bearing, monuments, curves and notations together with all dedications, easements, and approvals.
Purpose Behind Subdivision Regulations:
- To regulate subdivision development and implement planning policies
- to implement plans for orderly growth and development within the city’s boundaries and extraterritorial jurisdiction (ETJ)
- To ensure adequate provision for streets, alleyus, parks, and other facilities indispensable to the community;
- to protect future purchasers from inadequate police and fire protection
- to ensure sanitary conditions and other governmental services
- To require compliance with certain standards
- To officially register land.
Plat Process
- The applicant submits a preliminary plat
- a preliminary plat is reviewed by staff for compliance with the subdivision regulations
- Plat is then reviewed by the planning commission
- once the preliminary plat is approved by the planning commission, the property owners prepares the final plat
- final plat then repeats the process above until it is approved by the planning commission.
Extraterritorial Jurisdiction (ETJ)
The ETJ is a distance outside of the city limits where the subdivision regulations apply. the distance is specified under state law and usually increases with population size.
Performance Bonds
Many communities require property owners to post performance bonds. A performance bond is an agreement between the property owner and the community to ensure that the final plat is built as shown on the drawings within a certain time period. If the developer fails to meet the requirements, the government may use the bond to cover the cost of constructing the improvements. The bond is released once the improvements are in place and have been inspected by the local government.
Dedications
Gifts of land for public purposes, such as roads, parks and utilities.
Impact Fees
typically charged for off-site infrastructure needed to provide service to a development, such as a water or sewer main.
Development Agreement
a voluntary contract between a local jurisdiction and a property owner detailing the obligations of both parties and specifying the standards and conditions that will govern development of the property. Although the agreements are voluntary, once made they are binding on the parties and their successors.
A development agreement provides assurances to the developer that the development regulations that apply to the project will not change during the term of the agreement. The city or county may require conditions to mitigate project impacts, as well as clarification about project phasing and timing of public improvements.