Milford chronicle., 1910-03-25

minimize the danger and 70 carry the
surface water 10 its nearest and best
exit point Il is not enough 10 get the
water od and out from the road. but it
must be got away from the road.
When we have done this we can com
meuce 10 properly construct the sub
grade, and not before
As q general proposition. in accom-
pliShns we'll built sub-grade it is al
ways well TO remove an loan. roots
and vegetable matter from the pro
posed travel part Of the road; also
everything Of springy nature or any
thing found in excavating for said
roadway that viii be liable TO heave or
settle and I'm all such places with
clean sand OF gravel.
Where il is necessary to Oh to bring
the sub-erade up 10 the height required
have found in my practice where the
filing exceeds one foot in depth that
the filling should be deposited in
courses not 10 exceed twelve inches in
depth. loose measurement. and require
that each course shall be extended
across the entire I'LL and completed be-
fore commencing another course. no
matter II the ill be two or twenty
feet And this method should be fol
lowed with each succeeding course un-
I'll the esta biished grade is reached.
The constant travelling over each OF
the courses by the teams employed in
handling the material will remove the
possibility OF ever having a cracked
fill or one that will slide after the road
has been constructed. This is a very
important matter. find. and 1 have
used it in my work in my own state.
! also find that in the cuts it is well
not 10 plow down below that point
that is to be the finished grade Of the
sub-grade. but 10 keep it a sufficient
height above that SO that when the
roller is placed on the work il vii.
make a good solid foundation and YOU .
will not have to resort TO filing in the
,ut 10 bring the sub-grade up 20 the
grade desired. These two principles
" cut and ill viii De found TO work
10 great advantage in the proper con
struction Of a road.
The shape, or contour. Of the sub
yrade has been somewhat a matter of
some engineers holding To
he level line foundation and putting
N an extra depth Of stone or material
n the center to make the contour or
he'd from the ccuter line Of the road
o the bermS. or shoulders while other
engineers have given the sub-grade or
oundation upon which the wearing
is to be placed the same con
our as the finished road have used
his latter method in my own work in
nv state by reason OF the fact / be
ieve Il makes a better foundation and
hat the uniform depth Of stone at the
houlders will assist in holding the -.
rown OF the road in shape and fur
ish sustainment al the shoulder
ne better than to have a less depth
I stone at the shoulders and a greater
epth at the center OF the road II
lso assists in case Of a breaking up Of
be road or fracture or other devel-
pments in draining to the side, or
boulder. OF the road.
The forming Of the shoulders is a
cry important matter. They are real c
the support OF the road. II has al :,
avs been my practice when making a
boulder in the fills 10 lay out my road
I'd put the newly added material ten
: twelve inches into the new travel
lth. tamping it down firmly and then
ltting back 10 the line thereby max b
2 a good. firm shoulder 10 work to In
I'd 10 hold in place the stone or grav-
in the travel path Of the road d
II is a difficult matter TO treat this
lestion as intelligently through the
edium OF the written word as il
oud be with charts. bur if these D.
inciples are followed in building the
b-grade a good foundation upon r.
hich 10 put the wearing surface will
sult-James H. Macdonald. State
ighwav Commissioner Of Connect.
c. in Good Roads Magazine. New
,rk D