Virginia gazette. [volume] (Williamsburg, Va.) 1893-192?, 1902-10-18


10 natten out the road ana '
destroy the proper cross slope grade
When the finished road has been tested
by the engineer and found deficient
along the centre line. only one OF two
courses is open 10 the engineer 90 bring
The road up 70 the established grade
either 10 disturb the entire surface or
10 put on an additional quantity OK
screenings. IL Is seldom that the nrst
course is reSorted 90. but too frequetly
the latter. 4 road brought up iu This
way with screenings will always he an
object of great solciuudc AMI ana cN-
pensive road Go keep in good repair
The practice OF centre rolling has
I tendency also Co leave the outer edges
/ and three or four fcet OF thc macatam
very loose in their construction. while
/ lhe centre. when the road ls first turned
over Tor travel. is the best part eff Che
road for use. which 10y use iu short f
I time breaks its bond lud works out .
toward the sides. and then trouble corn- .
mences. Ina huiidinE macadam or any .
other pavement there are no little .
things. from the plovin- up Of the road .
to the las. rolling tlc road receives.
Very much depends even upon the
dr-.n.ng OF The load of metal boz The
roadhed. Under uo consideration what
ever should inld oi stone he allowed
to bc dumped on tae roadoed proper.
unless every part OBJ fhe load. before
rolling. is removed ana placed with
shoveis FIN the place 10 i- to occupy.
FOR the simple reason chat. when dump
ing is resortcd 60. whether from cart
ID. bel. f..H n.YN |tHH
pressure cannot he had upon $40 parts
The part which is brought to thc es-
tahlished Grade by shoycls win respond
20 the rolling. but where thc body of
the stone foll There viii he resistance.
which I'm time viii develop weakness
B in the road. Every part OF the road
. should receive equally thc >ame amount
o. rolic- pressure.
Z, Ho has used fcirord only in special
e. cases where tle foundation was unccr-
tan q thrtcen-.nch tclforl road VIII
nor woar as wen a~ "a ~ever-nCh mae
4 cadam road uDon % gravel or ml.ed
earth or sand foundation. rhe r.cidlty
70 OF The thirtcen-.uch patcmcu. con-
. du~cs 10 tho destruction or the road
while thc elasticity of the foundation
of srvcn-.nch macadlm tends to Dos
~ preservation. SD he has nor extended
the system of telford road, any further
y. than was absolutely necessary. prr
a. ferrinc 20 nse good subs grade material
with plenty of rolling. and to cXten.
Ut his system OF macadam no "a less prlc
than it The roads had been oi teiior'
an construction.
a j macadam road Dis properly Nul
-'' There i~ no necessity Tor inr applI'1i o
ies or screenings ln nainialhlh- 'A' road
Screenings placed upon an oid m'
~ cadam road must he upon tne SURFACE
IA where Do dry weather DO is uuat aud p
w. wet weather 30 IS mud- lhe i.m" io BE
he par ma'iNam fo"u Us Mlrh lN
stones "e-in io snow pare. Mneh 'A
liz screenings or wearing surface "l in
foad mas nern lost nrn. instead q
Sch screenings. STONE ranging in SIZE ITo'
"ncn'il inch 10 iHi'' lourl"> in'
longest oiAine'er- Nhoulu DE u~ed-
,s 'he lnree-i"ur'Ns men stones are Npfe'
rvs upon 'he surface OF 'ne fo"d. over %
sas run "iuth OF tAe Travelled I''fi anu
an. the depth or ABOUT three-Iourihs OK q
-, inch mo grcatc- depth should bc a
nlfnIH They will nor need NlfFr