Alma record. (Alma, Mich.) 1878-1928, 1907-10-02

oDER5
Section Of Sidewalk.

costing s15O or two dollars viii lay so
SQUARE feet OF finished walk.
For the sake OF illustration assume
that walk is 10 be built three feet
wide and four inches thick. concrete
3A inches, top mortar three-fourths OF
an inch. First. excavate trench three
feet four inches wide If an open or
porous soil four inches below bottom
or eight inches below top surface of
walk, but IL IN clay soil this trench
should be eight or ten inches below
bottom of walk From the lowest
point Of trench lay tile so no water
win stand i'm trench to freeze. Now
I'm this trench with cinders. gravel. or
stone, even, and lamp: when this is
brought up within four inches Of the
top surface of walk the porous foun-
dauou is complete now place side
forms (scantling, 2xf inches, set on
edge. stretch line tight, and from
line set scantlings straight: also they
must conform TO proper grade line.
Secure these scantlngs firmly by
placing a cross scantiing every four
feet and securely stalking the outside
at each of these cross scantlings to
keep them from spreading while the
concrete is tamped into place. Use
no nails or spikes; or in removing be.
fore thoroughly hardened the cast
might be broken The surface into
which the concrete is tamped IS first
sprinkled so that Che dry surface viii
not aborb the moisture from the con-
crete and thus arrest hydrauon Mix
concrete for the 3H inches in the fol-
lowing way: Take one part Portland
cement, three parts sand (cleap.
coarse and fine mixed). and four parts
aggregate (this may be gravel.
screened cinders. or crushed stone).
Place them in one pile on mixing floor.
While dry shovel back and forth at
least two times, until thoroughly
mixed. Now sprinkle with sprinkling
can while it is shoveled back and
forth two more times or until evenly
mixed and about the dampness CT
fresh earth. This concrete is now
ready to place. Shovel into the sec
tons of the form, beginning at one
end and filling each section as you 60.
tamping thoroughly and evenly to
within three-quarters OF an inch of TOP |
Of form. When the first section Is
completed remove the cross scantling |
and against the joint thus left bare |
set board onefourth of an inch thick /
and projecting above concrete so that |
when this section is also filed il can |
be slightly crowded loose and re-
moved, thus leaving onc-fourth of an |
inch division between each block
This is important The board is now
moved forward to the next joint. and
so on to completionA With knife or
pencil mark side forms exactly over
he one-fourth of an inch open joints.
SO that when the top mortar is spread
over the surface the top
mortar may be cut through into the
over joint or opening with trowel
sliding along straight edge The work
must be so managed that the top NOR
ar can always be placed on the con-
,rete within two hours after the latter
s placed, also the concrete should be
eighty sprinkled before the mortar
$ placed. so that the surface is moist.
lake mortar for top as follows: Port
and cement. one part; sharp. clean
and, two parts. First mix dry, then
vet and work into a stiff mortar.
'lace this on the concrete, spread with
rowel, leaving the form rather full. so
hat when stroked even with straight
dge the form is even full everywhere.
cave for 20 minutes, when the
Tater. wiz be evaporated At this
lme finish surfaces smooth and even
nth float or trowel, but do not over
rowel, which again brings the water
D the surface. Run along each side
dye with edger. cut across joints with
rowel and straight-edge at. marked
oints. run jointer through these. or,
! the absence of either edger or
inter, dub the edges with trowel. [
fter "a hours cover with grass.
Lraw, or carpet, wet thoroughly |
vice each day for six continuous
avs, when the walk is ready for use. :
| {