MN
Tree Constraints Plan
(Existing Layout)
RPA of T1 calculated according to RPA radius = 12 x stem diameter
Few roots will proliferate in this hatched area
due to the inhospitable rooting environment
beneath the road. The local authority tree
officer would ordinarily wish to see the RPA
increased in size in all other directions. We
can counter this by arguing that T1 has
previously had its canopy reduced and will
therefore require less of a root system.
T1
Heavily trimmed, ivy covered.
Four apple 'lollipops'
Ht : 2m
Dia : 5cm
5
1
4
2
Drawing No:
Title:
Tree Retention Categories
/ TCP Rev: 1
CCL 09233
Tree Constraints Plan
Stems & canopies shown
Category A tree
(Existing Layout)
Category B tree
27 Thurloe Square
SW7 2SD
Site:
5m
0
Scale: 1:100
Paper Size:
A2
Trees of high quality with an estimated life expectancy of 40+ years.
Usually large trees with significant presence or smaller trees with
excellent form. Retention of these trees is highly desirable.
Trees of moderate quality with a life expectancy of 20+ years.
Usually maturing trees, or younger trees with good form. Retention
of these trees is desirable though less than Category A trees
CROWN
Category C tree
Unremarkable trees of low quality and merit. Individual specimens
are not considered to be a material planning consideration.
Arboricultural Consultants
01422 316660
Category U tree
Trees unsuitable for retention due to their very poor condition.
T2
3
MN = Measured North:
BS 5837 Root Protection Area (radius = 12xstem diameter)
Tree Constraints Plan
Root Protection Area needing amendment due to site
conditions, e.g. presence of exising road or building.
Root Protection Area having been amended to account
for for site conditions
T1 = Tree No 1
G2
= Group No 2
H3
= Hedge No 3
1
Photo 1
Canopy spreads are sometimes
measured to an approximate N
defined by site features.
Often more accurate, especially
where rows of trees are not
aligned N‐S or E‐W.