Difference between revisions of "SMT201 AY2019-20G1 EX2 Kok Jim Meng"
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All the suitable sites are digitized in that way is because we can allow accessibility comes into play and maintain the natural conservation where we can link the road network to the proposed sites and construct the quarantine centre without affecting the natural feature (i.e. park). Furthermore, these suitable sites are staying away from buildings and are laying on the mid-level lands based on the elevation as explained earlier and in the following map. | All the suitable sites are digitized in that way is because we can allow accessibility comes into play and maintain the natural conservation where we can link the road network to the proposed sites and construct the quarantine centre without affecting the natural feature (i.e. park). Furthermore, these suitable sites are staying away from buildings and are laying on the mid-level lands based on the elevation as explained earlier and in the following map. | ||
[[File:Another Jim Suitability Zones and its Sites.png|800px|center]] | [[File:Another Jim Suitability Zones and its Sites.png|800px|center]] | ||
| + | In conclusion, I feel that the highlighted site (fid 9) is the most suitable site among all the 4 sites which has fulfilled at least 10,000m<sup>2</sup> of contiguous area as shown in the figure below. This is because it stays away from buildings, the site did not touch on the park, it has road accessibility, and the elevation is mid-level. | ||
| + | [[File:Jim Best Suitable Site for Gombak.png|600px|center]] | ||
| + | <div style="text-align: center;">''Figure 11: In my opinion, fid 9 is the best suitable site to build the quarantine centre''</div> | ||
==Comments & Recommendations== | ==Comments & Recommendations== | ||
In this Take Home Exercise 2, we can see that there is a challenge to build a quarantine centre in the Gombak subzone due to the fact that there is high elevation in the subzone and there are residential houses nearby together with natural features such as parks. Furthermore, Bukit Panjang camp takes mostly of the area of the subzone. This means that when building this quarantine centre, it means that: | In this Take Home Exercise 2, we can see that there is a challenge to build a quarantine centre in the Gombak subzone due to the fact that there is high elevation in the subzone and there are residential houses nearby together with natural features such as parks. Furthermore, Bukit Panjang camp takes mostly of the area of the subzone. This means that when building this quarantine centre, it means that: | ||
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Thereafter, we compute the suitability by using the same weights given by the AHP mentioned in this Take Home Exercise which gives the following Criteria_Raster which I will reclassify them where value 3 is Not Suitable Site, 2 is Good Suitable Site, and 1 is Best Suitable Site. | Thereafter, we compute the suitability by using the same weights given by the AHP mentioned in this Take Home Exercise which gives the following Criteria_Raster which I will reclassify them where value 3 is Not Suitable Site, 2 is Good Suitable Site, and 1 is Best Suitable Site. | ||
[[File:Jim Recommended Criteria Raster.png|300px|center]] | [[File:Jim Recommended Criteria Raster.png|300px|center]] | ||
| − | <div style="text-align: center;">''Figure | + | <div style="text-align: center;">''Figure 12: The output of Criteria Raster after computing it in Raster Calculator for the suitability of Western Water Catchment subzone''</div> |
[[File:Jim Reclassify for Recommended.png|600px|center]] | [[File:Jim Reclassify for Recommended.png|600px|center]] | ||
| − | <div style="text-align: center;">''Figure | + | <div style="text-align: center;">''Figure 13: Using Reclassify Values (simple) to reclassify the values to compute the Suitability Zones in Western Water Catchment subzone''</div> |
As such, it gives the following map output where both Good Suitable Site (value 2) and Not Suitable Site (value 3) are in the study area of Western Water Catchment. | As such, it gives the following map output where both Good Suitable Site (value 2) and Not Suitable Site (value 3) are in the study area of Western Water Catchment. | ||
[[File:Jim Recommended Suitability for WWC subzone.png|800px|center]] | [[File:Jim Recommended Suitability for WWC subzone.png|800px|center]] | ||
| − | Hence, I will digitise the suitable sites at the north central region of the study area which has high accessibility. Moreover, as mentioned earlier, that area also has low health risk and its flat land with almost no natural features. The following map shows the digitized suitable sites with its areas which are at least | + | Hence, I will digitise the suitable sites at the north central region of the study area which has high accessibility. Moreover, as mentioned earlier, that area also has low health risk and its flat land with almost no natural features. The following map shows the digitized suitable sites with its areas which are at least 10,000m<sup>2</sup>. |
[[File:Jim Recommended Suitable Sites for WWC Subzone.png|800px|center]] | [[File:Jim Recommended Suitable Sites for WWC Subzone.png|800px|center]] | ||
Further view of the suitable sites in OpenStreetMap and Google Maps Satellite will be shown here. | Further view of the suitable sites in OpenStreetMap and Google Maps Satellite will be shown here. | ||
Revision as of 17:09, 10 November 2019
Contents
Part 1: Map Layouts of Extractions
Target Roads
There is a higher number of target road networks in the central and eastern part of the Gombak study area. To build the quarantine centre, it is suitable to build at these areas due to the transportation of the materials for the construction of the quarantine centre.
Buildings
By using Master Plan 2014 Land Use and OSM’s buildings layer, I intersect them and classify them according to the building types. Residential buildings are saturated in the western side and northern side of the study area. Furthermore, military buildings (i.e. Bukit Panjang Camp) are at the central of the study area. In addition, train stations are at the eastern side of the study area. Hence, it is ideal to set up the quarantine centre at the southern side of the study area to stay away from those stated buildings.
Target Natural Features
According to the three types of nature features namely forest, parks, and water, the proposed quarantine centre needs to stay away from these nature features. Hence, it is ideal to set up the quarantine centre at the southern side of the study area.
Digital Elevation
The colours of the elevation are represented where green means flat land, orange-yellow means mid-level land, and red means high-level land. To fulfill the economic factor of building at gentle slope, it is suitable to build the quarantine centre at the green areas of the slope according to the raster.
Part 2: Map Layouts of Proximity
Proximity to Target Roads
The darker the values, the more suitable for the proposed quarantine centre to be constructed. Hence, this allows the accessibility of the transportation of the materials to construct the quarantine centre. With 5 metres by 5 metres resolution, the nearest road within the study area of Gombak is 0 metres. The furthest distance from the buildings is 743.303 metres.
Proximity to Buildings
The lighter the values, the more suitable for the proposed quarantine centre to be constructed. Hence, this is to ensure the quarantine centre to be built is staying away from the buildings. With 5 metres by 5 metres resolution, the nearest road within the study area of Gombak is 0 metres. The furthest distance from the roads is 838.466 metres.
Proximity to Target Natural Features
The lighter the values, the more suitable for the proposed quarantine centre to be constructed. Hence, this is to ensure the quarantine centre to be built is staying away from the nature features. With 5 metres by 5 metres resolution, the nearest road within the study area of Gombak is 0 metres. The furthest distance from the roads is 863.669 metres.
Slope
As mentioned earlier in first part of this Take Home Exercise, slopes are based on the elevation. The darker the values, the flatter the land is. Hence, the darker values are considered suitable for the quarantine centre to be constructed. With 30 metres by 30 metres resolution, the maximum steepness is approximately 36.419 degrees. As shown in the map, most areas of the study area are flat.
