The Cairo bulletin., 1907-09-20

free from mud dirt dust and loan
ana be screened when necessary. The
sand ana cement shall be thoroughly
mixed Any and then be made int
lmortar ot the proper consistency and
Thoroughly worked over with hoes
lThc broken stone thoroughly drench
IGd with Mater, but containing no
loose water In the heap, shall then b.
added 20 the mortar Ia the proper
proportions The concrete shan then
be turned and mixed until each piece
loi stone is thoroughly covered with
mortar The concrete thus prepared
shall he Immediately placed In the
work, and be spread ANA thoroughly
Z compacted by ramning until free
mortar apears on the surface. The
whole operation of mixing ana laying
each batch OF concrete shah be done
Jas expeditionnsly as possible with 4
isnIticient number OF skilled men.
and must be entirely completed
/ before the cement has begun 10 set
No re tenperiug OF concrete shall be
49, 'titttAf HhN any tuuGictf III WHICH
the cement has begun to set Shall be
rejected
Section II, Upon the foundation
thus prepared as above required shall
be spread a layer OF clean sand OF
the uniform thickness Of two "a ia
ches and upon this sand, as a cush
ion shall be laid the paving bricks
They must be closely and evenly laid
IN true straiGht lines at right angles
to the curbmg. ana al joints must
he broken at least three 80 inches
Whole bricks only shall be used Ok
ccpt ia starting aud finishing COURSES !
at che curb or at catch basins man |
holes etc. IN which case nothing bat |
laN bricks SHAH be used: ana III |
breaking bricks for this purpose tie
laiSts must be cut straight ana square /
with the tops and sides. Said bricks
shall be laid upon their edges ana
shall be one course deep.
All the work throughout must be
lone by skilled men and with the aid
% proper tools
When the bricks have been laid th
surface SHAH be- made smooth by ron
ms with roller weighing not less
man three 90 tons nor more than
AZ 60 tons or where rolling is iul
practicable then by tamping win /
Incty t9ol pounds tampur upon
we've Cl2l inch oak plank at least 1
iT co feet long. Il
Tile pavement shall then be thor II
ughly wet by tine contractor SO that II
u soft bricks can be detected and all 4
ueh bricks shall be removed aud ne i
laced with good hard ones; and ali hi
elective bricks found in the pave lc
lent shall be removed by the con 4
ractor and he replaced with good i
mes II
Section IS. The finished subgrade. o
he concrete foundation, the sanI il
ashion and the brick paving thereon II
hall be parallel to each other and
ave the shape and curve above dc
- '"" r"H v~utrI tfnr A. - >;
ld fnished surface of the naviu;. IA
hen completed shall be laid to tlD n
81 10.
y.n - - '@'iore street as u
h. '4'" "e"'N one I'D Of Iei
81, ,o o'
- -" materials used 81 W
+, 80 '''o'i 'n" completion OF u
a. -. i,,'' '''''"'' as wen as iol To OF
~. ','1 :, y'''.i''9 ana nlalholes as for la
e said pavement and curibng, shall an
II
ai,,, -, ~ - dnu peat grade aud Ia
~ ,..., used thionghont do
!, -. '' vi lhc BEST grade an
,ri ', ~, - "Idraulc cement and IN
~, '"i "i,' description generally aa
,n.,, '','' ''',u american Poftlan he
49,. ','''i we ~ an time
~, 80, ~ a'c" Inspection and tests w
"''''lbtu ana other quail un
'''' p'i'r'i's ~ the hoard Of tit
''''',ofen''''i'o g inc city 81 10
~ " lug ny engineer of said pr'
y, i"' proper to make. .taN
''"N' alau n' straight regu 10
I" .'I' ahl ahape' and free from 81
''' CRACKS. Ihey SHAH NOT be ma
'u'h -'1AiNS nor more than rs
'N' '"'l'a- hey Shall be express an'
.'''''' 'or paving purposes aud shall ass
i'"'" '"H t'u-h and thoroughly Wit the
H. quo must not absorb more than par
''"t OF 'helr Neight in water or
= III pr"heh and Immersed for sai'
II 81