Page 32 - GRIHA Manual Volume V - Introduction to National Rating System
P. 32
Evaluation procedure 25
# demarcate areas that have vegetated roof. Provide details of vegetated roof.
# in case high reflectance surface is provided, submit details of reflectance of surface
finish.
# demarcate areas having previous paving.
5.2.3 Certificate by architect to certify that total surface parking not to exceed as permitted by
local bye-law.
5.3 Appraisal (maximum point 2)
5.3.1 net paved area of site under parking, roads, paths, or any other use not to exceed 25% of
site area or net imperviousness of site should not exceed the imperviousness factor as
prescribed by national building Code 2005, Part 9 (plumbing services) section 5.5.11.2.1,
whichever is more stringent. as per clause equation 1 and equation 3 (reference
documents: 5.2.1. and 5.2.2.) (1 point)
5.3.2 total surface parking not to exceed as permitted by local bye-laws (mandatory-if
applicable) and
# more than 50% of the total paved area to have pervious paving/open grid pavement/
grass pavers (equation 4), or
# minimum 50% of the total paved area (including parking) to have shading by
vegetated roof/pergola with planters (equation 4), or
# minimum 50% of the total paved area (including parking) to be topped with finish
with solar reflectance of 0.5 or higher (equation 4) (reference documents: 5.2.1. and
5.2.2.)
# a minimum 50% of the total paved area (including parking) to have any combination
of the above mentioned strategies, where common area having two or more strategies
shall be calculated only once. (equation 4) (1 point).
Evaluation procedure
Appraisal 5.3.1
net paved area of site under parking, roads, paths, or any other use not to exceed 25% of site
area or net imperviousness of site should not exceed the imperviousness factor as prescribed by
the national building Code 2005, Part 9 (Plumbing services) section 5.5.11.2.1, whichever is more
stringent. as per clause equation 1 and equation 3 (reference documents: 5.2.1. and 5.2.2.) (1 point)
Required documentation
1. Calculations demonstrating that the net paved area of the project is less than 25% of the total
site area minus the building footprint and calculations mentioning the net imperviousness
factor of the project.
2. Soft copies of the drawings with the various paved areas and other roof and building areas
clearly demarcated along with the necessary area break-ups.
Review checklist
1. Check the various calculations of pervious and impervious paved area for accuracy.
# demarcate areas that have vegetated roof. Provide details of vegetated roof.
# in case high reflectance surface is provided, submit details of reflectance of surface
finish.
# demarcate areas having previous paving.
5.2.3 Certificate by architect to certify that total surface parking not to exceed as permitted by
local bye-law.
5.3 Appraisal (maximum point 2)
5.3.1 net paved area of site under parking, roads, paths, or any other use not to exceed 25% of
site area or net imperviousness of site should not exceed the imperviousness factor as
prescribed by national building Code 2005, Part 9 (plumbing services) section 5.5.11.2.1,
whichever is more stringent. as per clause equation 1 and equation 3 (reference
documents: 5.2.1. and 5.2.2.) (1 point)
5.3.2 total surface parking not to exceed as permitted by local bye-laws (mandatory-if
applicable) and
# more than 50% of the total paved area to have pervious paving/open grid pavement/
grass pavers (equation 4), or
# minimum 50% of the total paved area (including parking) to have shading by
vegetated roof/pergola with planters (equation 4), or
# minimum 50% of the total paved area (including parking) to be topped with finish
with solar reflectance of 0.5 or higher (equation 4) (reference documents: 5.2.1. and
5.2.2.)
# a minimum 50% of the total paved area (including parking) to have any combination
of the above mentioned strategies, where common area having two or more strategies
shall be calculated only once. (equation 4) (1 point).
Evaluation procedure
Appraisal 5.3.1
net paved area of site under parking, roads, paths, or any other use not to exceed 25% of site
area or net imperviousness of site should not exceed the imperviousness factor as prescribed by
the national building Code 2005, Part 9 (Plumbing services) section 5.5.11.2.1, whichever is more
stringent. as per clause equation 1 and equation 3 (reference documents: 5.2.1. and 5.2.2.) (1 point)
Required documentation
1. Calculations demonstrating that the net paved area of the project is less than 25% of the total
site area minus the building footprint and calculations mentioning the net imperviousness
factor of the project.
2. Soft copies of the drawings with the various paved areas and other roof and building areas
clearly demarcated along with the necessary area break-ups.
Review checklist
1. Check the various calculations of pervious and impervious paved area for accuracy.
