Page 35 - GRIHA Manual Volume II - Introduction to National Rating System
P. 35
Sustainable site planning 27
at a minimum. Vegetation cleared should be monitored and documented in terms of area, species,
densities/numbers of trees, and so on. Compensatory forestation should be practised wherever
vegetation removal has been done. Mark existing vegetation on site in surveys and follow detailed
guidelines of tree preservation as per National Building Code – Part 10: Landscaping, signs, and
outdoor display structures.
During construction, protection of existing vegetation (including trees, shrubs, grasses and other
plants) where possible, by preventing disturbance or damage to specified areas is recommended.
This practice minimizes the amount of bare soil exposed to erosive forces. All existing vegetation
shall be marked on a site survey plan. A tree survey in prescribed format shall be carried out as
indicated in the table below. The landscape plan should indicate trees, which have been preserved,
and also those, which had to be transplanted or removed clearly differentiating between these
three categories.
Table 1 Tree survey format
Serial
identiiable Botanical Common Protected /preserved /
2
1
survey plan No. in name name Girth Height Spread Condition transplanted / removed 4
3
Trees retained on the project site shall be protected during the construction period by the
following measures.
# Damage to roots shall be prevented during trenching, placing backfill, driving or parking heavy
equipment, dumping of trash, oil, paint, and other materials detrimental to plant health by
restricting these activities to outside the area of the canopy of the tree.
# Avoid cut and fill in the root zones, through delineating and fencing the drip line (the spread
limit of a canopy projected on the ground) of all the trees or group of trees. Separate the zones
of movement of heavy equipment, parking, or excessive foot traffic from the fenced plant
protection zones.
# Trees will not be used for support; their trunks shall not be damaged by cutting and carving or by
nailing posters, advertisements or other material.
# Lighting of fires or carrying out heat or gas emitting construction activity within the ground,
covered by canopy of the tree is not to be permitted.
# Young trees or saplings identified for preservation (height less than 2.00 m, 0.10 m trunk girth at
1.00 m height from finish ground, 2.00 m crown diameter) within the construction site have to be
protected using tree guards of approved specification.
# Existing drainage patterns through or into any preservation area shall not be modified unless
specifically directed by the landscape architect/architect/ engineer-in-charge.
# Existing grades shall be maintained around existing vegetation, and lowering or raising the levels
around the vegetation is not allowed unless specifically directed by the landscape architect/
architect/engineer-in-charge.
# Maintenance activities shall be performed as needed to ensure that the vegetation remains
healthy.
# The preserved vegetated area shall be inspected by the landscape architect/architect/engineer-
1 Protected trees are trees that are undisturbed during construction.
2 Preserved trees are the ones that are uprooted and preserved for replantation at original location after the construction activity is
completed.
3 Transplanted trees are the trees that are uprooted and replanted at different locations.
4 Removed trees are the ones that are uprooted for construction.
at a minimum. Vegetation cleared should be monitored and documented in terms of area, species,
densities/numbers of trees, and so on. Compensatory forestation should be practised wherever
vegetation removal has been done. Mark existing vegetation on site in surveys and follow detailed
guidelines of tree preservation as per National Building Code – Part 10: Landscaping, signs, and
outdoor display structures.
During construction, protection of existing vegetation (including trees, shrubs, grasses and other
plants) where possible, by preventing disturbance or damage to specified areas is recommended.
This practice minimizes the amount of bare soil exposed to erosive forces. All existing vegetation
shall be marked on a site survey plan. A tree survey in prescribed format shall be carried out as
indicated in the table below. The landscape plan should indicate trees, which have been preserved,
and also those, which had to be transplanted or removed clearly differentiating between these
three categories.
Table 1 Tree survey format
Serial
identiiable Botanical Common Protected /preserved /
2
1
survey plan No. in name name Girth Height Spread Condition transplanted / removed 4
3
Trees retained on the project site shall be protected during the construction period by the
following measures.
# Damage to roots shall be prevented during trenching, placing backfill, driving or parking heavy
equipment, dumping of trash, oil, paint, and other materials detrimental to plant health by
restricting these activities to outside the area of the canopy of the tree.
# Avoid cut and fill in the root zones, through delineating and fencing the drip line (the spread
limit of a canopy projected on the ground) of all the trees or group of trees. Separate the zones
of movement of heavy equipment, parking, or excessive foot traffic from the fenced plant
protection zones.
# Trees will not be used for support; their trunks shall not be damaged by cutting and carving or by
nailing posters, advertisements or other material.
# Lighting of fires or carrying out heat or gas emitting construction activity within the ground,
covered by canopy of the tree is not to be permitted.
# Young trees or saplings identified for preservation (height less than 2.00 m, 0.10 m trunk girth at
1.00 m height from finish ground, 2.00 m crown diameter) within the construction site have to be
protected using tree guards of approved specification.
# Existing drainage patterns through or into any preservation area shall not be modified unless
specifically directed by the landscape architect/architect/ engineer-in-charge.
# Existing grades shall be maintained around existing vegetation, and lowering or raising the levels
around the vegetation is not allowed unless specifically directed by the landscape architect/
architect/engineer-in-charge.
# Maintenance activities shall be performed as needed to ensure that the vegetation remains
healthy.
# The preserved vegetated area shall be inspected by the landscape architect/architect/engineer-
1 Protected trees are trees that are undisturbed during construction.
2 Preserved trees are the ones that are uprooted and preserved for replantation at original location after the construction activity is
completed.
3 Transplanted trees are the trees that are uprooted and replanted at different locations.
4 Removed trees are the ones that are uprooted for construction.
