87716 Nangarhar Project Construction Best Practices Presentation
#1
Site grading is the process of adjusting the slope and elevation
of the soil around buildings or civil structures. Prior to
construction or renovation, site grading may be performed to even
out the surface and provide a solid foundation, and at other times,
grading may be required to improve drainage and create the desired
appearance for landscaping features.
Clearing vegetative cover and then grading a site are arguably
the most destructive stages in the development process and can
dramatically impact pre-existing hydrology. Soils are exposed to
erosion, the site is compacted by heavy equipment, and the natural
terrain and drainage are completely altered. Civil Works
Contractors should maintain as much natural vegetation as possible
and limit clearing, grading, and land disturbance activities to the
minimum needed for construction, maintenance, and emergency
services.
UNOPS has a social and professional responsibility to manage all
construction works that involve the grading of an area where the
slope of the area is to be excavated or filled; the excavation,
fill, or rearrangement of earth material on any site; all grading
or clearing operations; the excavation or fill of any portion of a
site that increases or decreases its elevation following the
completion of grading at any point; the diversion of rainwater
runoff from an area that is greater than the impervious area
threshold for new development; the blockage or alteration of a
waterway or drainage way; or the excavation for the installation,
removal, or repair of any underground structure.
UNOPS JICA IV Project is undertaking building construction works
for school and clinic facilities, and the works involve site
grading. The project engineering team has to evaluate contractors
grading plan, including contours and grade elevations for existing
and proposed ground surface elevations at each given site.
This is a UNOPS JICA IV PowerPoint presentation explaining of
the following:
Site Grading Definition, Methods and Challenges and
Recommendation for Best Practices
Presentation topics:
1) Key Words used in the presentation
2) Key terminology or definition to understand the
presentation
3) Site Grading definition, purpose and process or
techniques
4) Requirement information before site grading design
5) Requirement information after site grading construction
works
6) Equipment used in site grading
7) Site grading techniques or methods used in JICA IV works
8) Implementing site grading works in JICA IV process and
roles/responsibilities
9) Challenges applying site grading techniques in JICA IV
subproject sites
10) Recommendations for best practices in site grading for
building construction works
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