The Bourbon news. [volume] (Paris, Ky.) 1895-19??, 1914-07-07

that IL VIII unite with the succeeding
layer.
The bituminous composition or &C.
ment shall in each case be free from
water. and shall be especially rein.
ed TO remove volatile and other mat
ter susceptible to atmospheric influ-
ences.
section 4. The specifications for
creosoted wooden block pavement
herein above referred to are as fol-
lows:
SPECIFICATIONS FOR WOODEN
BLOCK PAVEMENT.
The present wearing surface shall
be removed from the present
concrete foundation, and all
material so removed shall
be deposited by the contractor
at the city quarry or at any other
points which may be selected by the
Mayor, such points, however, to be
no further distance from the point of
removal than the city quarry.
Upon the present concrete founda-
ton shall then be laid the following:
MORTAR BED.
1. The concrete foundation must
be wet by sprinkling just previous to
laying the mortar bed upon it.
z. The mortar bed, at least one
half (2) inch thick will be laid upon
the concrete foundation. 1t will be
composed OF one part Portland &C.
ment and three parts sand or screen
ings, both of the qualities specified
for use in the concrete foundation, to-
gether with the least amount of wa
ter needed for the best results 1t
must be thoroughly mixed and thick
ly spread, rammed or struck off to a
true surface. No mortar shall be laid
nor wood blocks placed in their final
position later than 30 minutes after
the mortar is mixed.
3. The wood BLOCK pavement layer
shall be 4 inches thick as required by
the traffic and conditions of the street
and constructed of materials and in
the manner hereinafter specified.
4. The wood from which the blocks
are made shall be regular sound COM
mercial merchantable long leaf yellow
pine, which shall be we'll manufacture
coarse knots or very coarse grain, and
free from the following defects: I'm
sound, loose and hollow knots, worm
holes, knot holes, through round or
other Objectionable shakes, wane,
bark, incipient of other decay.
5. No dead or second growth tim
Der will be accepted and all timber
shall be cut in locality recognized
as producing the timber specified.
The number of annual rings shall av-
erage not less than six co per inch
measured radically. All timber shall
be we'll air seasoned. The City Engi-
neer or his inspector may at any time
reject in bulk all timber that does not
fulfill these specifications. The con-
tractor shall give the City Engineer at
least twenty days notice in writing
the time and place of the beginning of
cutting or treatment of blocks.
s. The paving blocks, cut from
wood or lumber above specified, shall
be we'll manufactured, truly rectangu-
ed on one side. The top and bottom
both shall be evenly and smoothly
sawn No blocks shall vary in width
and depth more than one sixteenth of
an inch (1-16) from others used on
the same street or contract. The
depth shall be four inches in thick
ness. The Length shall not be less
than six CO. nor more than ten (10)
inches and shall average eight (8)
inches long. The width shall not be
less than three 60 nor more than
four (4) inches, provided that all
blocks used in one street or contract,
shall be Of the same width. The
blocks shall average at least 70 per
cent of hard wood, and no block will
be accepted that has less than 60 per
cent of hard wood
Z. The blocks shall be treated, pre-
served or. creosoted as hereinafter
specified, and each block shall contain
at least 20 pounds of creosOte oil per
cubic foot of wood, or when a block
contains much natural pitch it shall
receive as much creOsOte as can be
be forced into it by the same process
and pressure as is used in the treat
ment Of the blocks of the same kind
of wood which will receive 20 pounds
Of creOsOte oil per cubic foot.
8. The creosote oil shall be a dead
oil of pure coal tar or wholly pure
coal tar product 1t shall not contain
more than three per cent. of water,
and if it does contain this amount of
water corresponding correction
must be more than three per cent. of
of waer, and if it does contain
this amount of water corresponding
correction must be made so that an
equivalent additional amount of creO-
sOte is forced into the blocks. 1t shall
contain only traces of Acetic and
acetates. It's specific gravity at one
one hundred degrees 600 degrees) F.
(3S degrees Cent? shall be at
least LOS and not more than
10 so as to assure it
thoroughly penetrating the wood
blocks. The residue insoluble
Decentralization with benzol and chic
reform must not exceed per cent. of
the weight of the creosote oil. Frac-
tional distillatiOn of 100 grams of the
creosote oil shall produce of dry oil
Inv weight within the following limits ::