The development of reliable spill containment berms relies heavily on the proficiency of the landscape architect. In zones where petroleum exists one must beware of any busts that may cause public catastrophes. Land can be used to create this safety measure to contain the damage.
Ground surfaces greater than 5 percent are perceived as being more sloped and become increasingly difficult to work with as their degree of incline increases. The eye is invited to move along a sloped plane rather than resting as it is able to do in a level surface. This can be exciting in some cases, but disconcerting in others.
Both objects and views have a tendency to move downhill. In addition, the visual orientation for people on a tilt is also toward the lower hill. People readily see objects or areas of the landscape located at the bottom very much like they do in an outdoor terrace. The orientation is very likely to be away from the site toward some distant area of the landscape.
The likelihood of erosion increases as well on steeper land because exposed soil is easily washed downhill by a greater volume of surface water draining at a faster velocity. The design of undulating zones should be undertaken with care and understanding for the unique conditions that exist. The design guidelines that follow will help to accomplish this objective.
Then, the designer should attempt to match the proposed uses to slant conditions where they will fit with minimal grading. Above 25 per cent, it is too steep to safely mow. An outdoor entertaining space, on the other hand, could be placed at an angle that is between 5 and 15 percent by terracing it on different levels. Planted hills that do not exceed a 50 percent grade can serve as a transition between the elevations of the individual spaces.
On steeper site areas, outdoor uses may need to be molded by creating terraces that are cut at different elevations. This creates a series of large steps on which outdoor uses are placed. Retaining walls give them a more architectural appearance and allow spaces to be placed closer together. For example, a recreational lawn area should ideally be placed in a location that tilts between two and four percent.
They likewise can be designed as visual extensions by extending materials and edges into the adjacent landscape. Decks work well for spaces of limited size such as outdoor sitting, entertaining, and eating and many times can serve as architectural extensions of the house. The one disadvantage of steps is that they form barriers to universal accessibility. Everything possible should be done to take advantage of the inherent views, assuming they are worth capturing.
To maintain this standard, walks may need to take a more indirect route between two points. Where possible, extreme elevation differences between adjoining spaces should be avoided to minimize the number of steps that are required. Steps between adjoining spaces might also be wider than necessary so that the spaces feel more connected. Do not provide access to dangerous spots in spill containment berms.
Ground surfaces greater than 5 percent are perceived as being more sloped and become increasingly difficult to work with as their degree of incline increases. The eye is invited to move along a sloped plane rather than resting as it is able to do in a level surface. This can be exciting in some cases, but disconcerting in others.
Both objects and views have a tendency to move downhill. In addition, the visual orientation for people on a tilt is also toward the lower hill. People readily see objects or areas of the landscape located at the bottom very much like they do in an outdoor terrace. The orientation is very likely to be away from the site toward some distant area of the landscape.
The likelihood of erosion increases as well on steeper land because exposed soil is easily washed downhill by a greater volume of surface water draining at a faster velocity. The design of undulating zones should be undertaken with care and understanding for the unique conditions that exist. The design guidelines that follow will help to accomplish this objective.
Then, the designer should attempt to match the proposed uses to slant conditions where they will fit with minimal grading. Above 25 per cent, it is too steep to safely mow. An outdoor entertaining space, on the other hand, could be placed at an angle that is between 5 and 15 percent by terracing it on different levels. Planted hills that do not exceed a 50 percent grade can serve as a transition between the elevations of the individual spaces.
On steeper site areas, outdoor uses may need to be molded by creating terraces that are cut at different elevations. This creates a series of large steps on which outdoor uses are placed. Retaining walls give them a more architectural appearance and allow spaces to be placed closer together. For example, a recreational lawn area should ideally be placed in a location that tilts between two and four percent.
They likewise can be designed as visual extensions by extending materials and edges into the adjacent landscape. Decks work well for spaces of limited size such as outdoor sitting, entertaining, and eating and many times can serve as architectural extensions of the house. The one disadvantage of steps is that they form barriers to universal accessibility. Everything possible should be done to take advantage of the inherent views, assuming they are worth capturing.
To maintain this standard, walks may need to take a more indirect route between two points. Where possible, extreme elevation differences between adjoining spaces should be avoided to minimize the number of steps that are required. Steps between adjoining spaces might also be wider than necessary so that the spaces feel more connected. Do not provide access to dangerous spots in spill containment berms.
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