The Emmett index. [volume] (Emmett, Idaho) 1893-1925, 1909-04-01

three parts clean. sharp sand an,
six parts OF broken stone or gravel
The broken stone or gravel shall
be OF such size as will pass througl
a one and one. half inch screen AM
be rejected by quartered incl
screen. Said stone or gravel is Il
be proportioned as to have tn,
least possible amount of void in til,
aggregate mass. All cement, sand
gravel or stone is to be of a qualit,
satisfactory to the common counci
and the city engineer.
METHOD or MIXING The
sand shall be evenly spread upon
the mixing board and evenly cover
ed with cement, after which they
shall be turned and thoroughly
mixed until the whole mass is OF
an even color before wetting. The
least possible amount of water
necessary to make good mortar
shall then be added and thoroughly
mixed. The broken stone or
gravel shall be drenched with water
but not sufficiently to leave free
water in the heap. This wet gravel
or stone shall then be incorporated
Immediately with the specified por-
ton Of wet mortar and thoroughly
mixed until each particle of gravel
or stone is we'll and evenly covered
with mortar.
LAYING CONCRETE Upon
the foundation prepared shall be
laid bed Of concrete three and
one-ouarter (34 )inch in thickness.
The concrete shall be placed as cx-
peditiously as possible in the form
and shall be thoroughly rammed
until free mortar appears on the
surface, especial care being taken
In ramming that portion next TO
the forms.
The surface Of the concrete shall
be at leest three. quarters ~ Of an
inch below the surface of the finish
ed walk and parallel thereto. The
whole operation of mixing and lay
ing each batch of cement shall be
as expeditiously as pos
sible.
Retamping of concrete will not
be permitted.
All concrete that has begun to
vet before ramming Is completed |
shall be removed from the work.
Any concrete that fails to show a
proper set after 1t has been allowed |
iufficient time. shall be taken out
md replaced by the contractor, at
lis own expense, with new con-
tete Of the proper quality.
Before adding any new concrete
mixture to that which has been
,re~ously laid for one (1) hour or
more, the surface of the old work
hall be thoroughly cleaned and
Dated with thin grout VI equal
arts of Portland cement and sand
efore the new mixture is added. No
oncrete shall be laid when the
at any time of day or
light falls below thirty-hve 1850
egrees, Fahreneit.
WEARING SURFACE Upon I
MS base the wearing surface shall {
c laid at least three-fourths (A)
{ an inch in thickness, excepting ,
! the private driveways or alley S
where it shall he one c
nd one half 40 inches in thick. /
ess. II shall be composed of one f
y part Portland cement and two t
arts sand. r
The wearing surface shall be
adc as follows: The cement {
I'd sand shall be mixed dry and S
oroughly and sufficient guam o
~ of water added afterwards to Fl
run paste of proper consistency.
shall be expcditiously mixed S
ID none of it shall be used after il o
IS been mixed one.h half of an s.
,ur, or evidence of setting APP {
ars. h
The wearing surface shall be laid
ION the concrete base while the Il
ncrete base is still soft and adj h
'sive and must be thoroughly a
orked and brought to uniform
it roughened surface and it must 81
slate colored. a
The wearing surface shall be ell
eased in three foot squares, each ST
irth crease to be directly over II
E joint in the concrete and to ex- bt
I'd completely through to the CT
ne and all joints to be thorough al
creased. II,
FORMS Forms shall be thor. OF
ghly secured in place and of such q
manner as the engineer may di to
t before placing on the concrete. al
REMOVAL OF FORMS The til
ms shall not be removed until e
! wearing surface is thoroughly
! set so
PROTECTION--It shall then be
covered, when finished, with th
ivas, sand, earth, straw or other re
terial to thoroughly portect it an
m the elements aud must be SUI