1 -Building of a new safewalkway for schoolchildren.The choice between alternative walkways depends on how muchground has to be acquired fromprivate properties and costs.Which properties are affected?Which solution will cause the cheapest land acquisition and why?2- Detail planning for Hotel parking according to standard specifications rules.
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Gianni Gorgoglione Physical Planning GIS Detail planning 1 Detailed planning - Case 1 – new walkway Methodology 1) Creation of Geodatabase projected with Swedish coordinate reference system RT90 2) Created feature from PP_DetailedPlanning_Lines according to the code chapter 7 of instructions. 3) Created a DEM from contours shape file. 4) Georeferenced the city map with the current data. 5) Digitized features that represent A1 and A2 walkways and the school and new houses. To create the path for A2 was avoid to pass through a building in parcel 260. Segments across crossing were not avoid since there are properties type assigned to the road. Created a buffer of 250 cm from the center of the line in A1 and A2 to produce the polygon representing the walkway path. Segments before the parcels from the houses was omitted since it is possible to assume that both the paths have same costs in this area. 6) Intersection of data between buffered roads (A1 and A2) with the parcels containing the property types. 7) Select all the parcels intersecting the path A1: SELECT * FROM “parcels” WHERE “region” IN ( 32, 71, 81, 96, 141, 159, 187, 211, 226, 271, 273, 3, 36, 361, 263, 266, 161, 187, 218, 268,187,187, 81, 271, 161, 161, 161, 268,218, 268) Select all the parcels intersecting the path A2: SELECT * FROM “parcels” WHERE “region” IN ( 3,14,21,36,141,226,232,236,256,260,261,263,266,268,269,270,273,141,270,236,268,236,270 ,260,261) 8) Created A1 and A2 affected area 9) Created tables for affected area with a histogram showing the percent of lost area for every parcel within the walkways. 10) Cost analysis a) identified similar costs for both the walkways. b) Assigned costs to parcels according the property type: Table 1 Unit costs for parcels type PROPTYPE Explanation Costs for modification parcel area 1 Parcels for living houses 1000 kr/m 2 2 Parcels for recreation / public use 2000 kr/m 2 3 Road parcels 10000 kr/m 2 4 Other 500 kr/m 2 N.B. Costs are only example and they do not follow any standard cost in reality. They are only indicative for the analysis purpose.
1) Digitizing the hotel according to the sketch figure 2 and figure 3 2) Estimation single parking zone 200/3=67 parking 3) Calculating area for car parking 4) Calculating area for bus parking 5) Calculating area for walkway for handicapped 6) Calculating area for hotel services 7) Digitizing 67 car parking. In this step it was necessary to find the best way to compromise
comfort, discretion and accessibility for a wheelchair moving from the car´s parking to the back entrance of the hotel. The shortest way could have been the one closest to the main entrance but it was on the way of the hotel services area for goods delivery for example.
8) Unfortunately, the facility way resulted to be a bit long but better according to the above mentioned reasons. One ramp is necessary to pass from 366 m to 367 m levels (Point A, figure 1). The ramp gradient will be 1:20 since the length of the segment is circa 20 meters. Then, at the point B of figure 1, it is necessary a filling work to make flat the ground.
9) Digitizing the buses parking. The location of this parking was difficult due to the change in slope of the earth surrounding the building. Besides it was necessary an estimation of the ramp for the wheelchair that go to the bus parking. Thus, the chosen location for the ramp was optimal for the wheelchair passage without slope variation and close to the main entrance of the hotel.
10) Adjustment of the roads and area in front of the main entrance. This was made to facilitate the passage to the Service area and to give some extra parking for temporary use.
Figure 1 Detail of the solution for Wheelchair facility from Car parking
