Evening journal., 1916-06-06

or wilmington OF by the +. G. dupont
Road Testing Laboratory in accord
ance with the method prescribed by
the specifications.
Comment BY Commission of
Engineers.
THE depth of loose broken stone
for the first and second courses Of
waterbcund macadam road are COW
cred by Sections Is and 10. These
sections should be revised to require
a depth after rolling Furthermore
both of these sections should be re-
vised with reference to the amount OF
rolling required and should include
the provision i'm each section that the
course I'm question shall be rolled un-
til firm, compact and even and until
there is no movement under the ac-
ton Of the roller
Comment BY Highway Commissioner.
The specifications for waterbound
! macadam roads should not he revised
to require a depth after rolling. The
| highway commissioner is able to cal
culate the depth of loose stones OF the
various kinds necessary 10 produce
the required depth after rolling. The
/ supervisor and engineer. If any there
] be. can ascertain from the road stakes
I the depth OF the loose stone as il is
applied. After the road is rolled the
! thickness can only he arrived at by
estimating the thickness produced by
] the rolling of the loose stone, OF by
/ digging holes i'm the road.
4 Neither should the section be re-
! vised in the manner suggested by the
/ Commission Of Engineers in respect to
the rolling. The road should be roll
ed until thorough settled into place
TO the satisfaction of the highway
/ commissioner. He is the official who
finally passes upon the completed
| road If the specifications provided
that Il should be rolled until firm.
compact and even. and until there is
no movement under the action OF the
roller. it might lead to a dispute be-
tween the contractor and the highway
commissioner as to whether there
was or was not movement under the
action Of the roller
Statement Commission of Engineers.
Sections 90 2l and % provide that
"a inch stone and screenings shall
be spread upon the road at such
thickness AS to bring it up to uni
form surface It is bad practice TO
put any appreciable amount of
screenings or small stone upon the
surface as it cannot be held solid and
will result in dust in dry weather
and mud i'm wet weather The road
should be brought up to its finished
surface with the larger sized stone
as provided in Section 10. The pro-
vision for the application OF screen
ings which will pass though sec
ton of rotary screen having circu-
lar holes of ga inch or 5-S inch
diameter should read as follows: The
, second course shall be compacted ano
puddled with screenings and water
under the same provisions as pre-
. scribed for the first course in Section
1S and when the rolling shall have
boen completed. the surface Of tho
? second course shall be firm. compact
even and true to the lines, grades an'
cross sections. After the secon'
: course has been compacted. puddle'
, / and filled as above specified, II shal
i ! he evenly covered with thin layer O
. screenings
5 Comment nv Highway COMMISSIONS
: For sometime past in all the exc
: cuted contracts for the construcuo
, of roads in this county. Section z
reads as tOlloWs.
Section 21. When the two course
6 are rolled to the satisfaction OF tn
Il highway commissioner or supervisor
= coats of fifty (5O) per cent of three
. quarters (3-4) inch stone and MT
o (5O) per cent Of screenings, properl
mixed. are to he spread from pile
b along the side Of the road. and in n
= case from niles dumped on the ston
= bed. of sufficient thickness to make
\, smooth and uniform surface to tn
. road then again rolled and water al
! plied in sufficient quantity until
flushes in front of the roller and unit
the road becomes thoroughly consol
10 dated. hard and smooth.
, Nv reason Of the change is Sectio
4 2t. the results produced under Sc.
n tions 20. 81 and %. are substantial
is the same as those recommended I
"A commission OF engineers.
r Statement by Commission
Engineers.
"The quality Of broken stone is r
> ferred TO in Sections 26 and 27 TT
=. nbvsical properties of the rock to
-. used are not stated. and the contra
y tor is allowed TO name, in his bid. II
kind of rock which he intends
s. use. -
In cases where contracts have bee
n. awarded 10 the. lowest bidder on
given kind OF rock and not to tn loN
~ est bidder on any kind OF rock mel
toned in the bids. we are of the opil
m ion that the Levy Court has not cor
40 nlied with the above provision OF u
o. law 10 the best interests OF the Ia
4 navers. The present practice OF q
On lew Court certainly provides TOT u
n, nossibility Of awarding contracts
as favored contractors.
n Recommendation by Attorney OF Lee
as Court.
60 As suggested above, the specific
in tions as to stone must necessarily
q elastic The kind Of stone to he u.s.
Iv is described in Section 26 and q
10 the contract and specifications whl
are above quoted in full, and is spec
,i. 6od as a standard of quality WI
which to compare the bids OF the Sc
nm eral bidders II the present practi
ms of the Lew Court provides for I
ne nossibilitv OF awarding contracts
o a favored contractor the SPECIFIC
I'M tions Of broken stone possessing &C
tain physical properties would pr
pr vide for the possibility of awardil
cd contracts for the benefit OF the !
or vored nroducer OF the kind of sto
IN possessing said certain physlcal pro
X critics, as the stone possessing sd
tie certain physical properties might