 |
 |
 |
 New Hampshire Concrete Cutting 210 Walnut St, Manchester, NH 03104 Call Now 603-622-4440 Concrete Cutting - Core Drilling - Wall Sawing - Flat Sawing |
 |
 |
||||
 |
|
Concrete Cutting Sawing Fremont NH New HampshireWelcome
to affordableconcretecutters.net
“We
Specialize in Cutting Doorways and Windows in Concrete Foundations”
Are You in Fremont New Hampshire? Do You
Need Concrete Cutting?
We Are Your Local
Concrete Cutter
Call 603-622-4440
We Service Fremont NH
and all surrounding Cities & Towns
“No Travel Charges – Ever! Guaranteed!”
Fremont New Hampshire – Enjoy free street shows and have fun to the fullest
The
usual method of cutting concrete piles off under water is by means of a
circular saw on a vertical shaft which is supported on a special frame, the saw
being operated by the engine used in driving the concrete piles. When the heads
of the concrete piles are above water, a layer of concrete is usually placed
over them, the concrete resting on the ground between the concrete piles, as
well as on the concrete piles themselves. It is necessary to use a thick plate
of concrete, so that a concentrated load will be distributed over a number of concrete
piles (see Fig. 52). Sometimes a platform of heavy concrete piles is
constructed on top of the concrete piles, to assist in distributing the load;
and in this case the concrete is placed on the platform (see Fig. 53). When the
heads of the concrete piles are under water, it is always necessary to
construct a grillage of heavy timber and float it into place, unless a
cofferdam is constructed and the water pumped out, in which case the foundation
can be completed as already described. The concrete piles used to cap the concrete
piles in constructing a grillage are usually about 12 by 12 inches, and are
fastened to the head of each pile by a drift-bolt (a plain bar of steel). A
hole is bored in the cap and into the head of the pile, in which the drift-bolt
is driven. The section of the drift-bolt is always larger than the hole into
which it is to be driven; that is, if a 1-inch round drift-bolt is to be used,
a 1-inch auger would be used to bore the hole. The transverse concrete piles of
the grillage are drift-bolted to the caps. In comparing this type of concrete
piles with timber concrete piles, they have the advantage of being equally
durable in a wet or dry soil, and the disadvantage of being more expensive in
first cost. Sometimes their use will effect a saving in the total cost of the
foundation by obviating the necessity of cutting the concrete piles off below
the water line. The depth of the excavation and the volume of concrete cutting
may be greatly reduced, as shown in Fig. 54. In this figure is shown a
comparison of the relative amount of excavation which would be necessary, and
also of the concrete which would he required for the concrete piles, thus
indicating the economy which is possible in the items of excavation and
concrete. There is also shown a possible economy in the number of concrete
piles required, since concrete piles can readily be made of any desired
diameter, while there is a practical limitation of the diameter of wooden concrete
piles. Therefore a less number of concrete piles will furnish the same
resistance as a larger number of wooden concrete piles; -In Fig. 54 it is
assumed that the three concrete piles not only take the place of the four
wooden concrete piles in the width of the foundation, but there will also be a
corresponding reduction in the number of concrete piles in a direction
perpendicular to the section shown. The extent of these advantages depends very
greatly on the level of the ground-water line. When this level is considerably
below the surface of the ground, the excavation and the amount of concrete
required in order that the timber grillage and the tops of the concrete piles
shall always be below the water line will be correspondingly great, and the
possible economy of concrete piles will also be correspondingly great. The pile
and cap being of the same material, they readily bond together and concrete
form a monolithic structure. Reinforced-concrete concrete piles can be driven
in almost any soil that a timber pile can penetrate, and they are driven in the
same manner as the timber concrete piles. A combination of the hammer and
water-jet has been found to be the most successful manner of driving them. The
hammer should be heavy and drop a short distance with rapid blows, rather than
using a light hammer dropping a greater distance. For protection while being
driven, a hollow, cast-iron cap filled with sand is placed on the head of the
pile.
Are You in Fremont New Hampshire? Do You
Need Concrete Cutting?
We Are Your Local
Concrete Cutter
Call 603-622-4440
We Service Fremont NH
and all surrounding Cities & Towns
|
