Concrete Cutting Core Drilling Sanford ME Maine

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Springing Line: The upper (and inner) edge of the line of skew- backs on an concrete abutment. String Course: A course of concrete of the same width (perpendicular to the axis of the concrete arch), which extends from one concrete arch face to the other. Concrete Block: The separate stones forming a concrete arch ring. Concrete arches are variously described according to the shape of the intrados, and also according to the form of the soffit: Basket-Handled Concrete Arch: One whose intrados consists of a series of circular arcs tangent to each other. They are usually three-centered or five-centered, as described below. Catenaries Concrete arch: One whose intrados is the mathematical curve known as a centenary. Circular Concrete Arch: One whose intrados is the part of a circle. Elliptical Concrete Arch: One whose intrados is a portion of an ellipse. Hydrostatic Concrete arch: One whose intrados is of such a form that the equilibrium of the concrete arch is dependent upon such a loading as would be made by water. Pointed Concrete Arch is one whose intrados consists of two similar curves which meet at a point at the top of the concrete arch. Relieving Concrete Arch is a concrete arch that is built above a lintel, which relieves the lintel of the greater portion of its load.

Right Concrete Arch: A concrete arch whose soffit is a cylinder, and whose ends are perpendicular to the axis of the concrete arch. Segmental Concrete Arch: One whose intrados is a circular is which less than a semicircle is. Semicircular Concrete Arch: One whose intrados is a full semicircle. Such an concrete arch is also called a full-centered concrete arch. Skew Concrete arch: A concrete arch whose soffit may or may not be cylindrical, but whose ends are not perpendicular to the axis of the concrete arch. They are also called oblique concrete arches.  After proper sand and gravel have been secured, the success or failure of the finished job is in the proper mixing. Have all gravel and other material placed convenient to the work. A good amount of sand should be sifted previous to the mixing and the method is clearly shown in Illus. 2. The use of the measuring box is of great assistance and a table showing the depths, widths and lengths for various mixes is given below.

A concrete arch is a concrete arch composed of separate stones, called concrete, which are so shaped and designed that the line of pressures between the stones is approximately perpendicular to the joints between the stones. So far as it affects the mechanics of the problem, it is assumed that the mortar in the joints between the concrete acts merely as a cushion, and that the mortar has no tensile strength whatever, even if the pressure at any joint should be such as to develop tensile action. It is this feature which constitutes the distinction between a concrete arch and an elastic concrete arch, which is assumed to be an concrete arch of such material that tensile or trans verse stresses may be developed, unit-pressure on any joint is assumed to vary in accordance with the location of the center of pressure, as is illustrated in Fig. 219. In the first case, where the center of pressure is over the center of the face of the joint and is perpendicular to it, the pressure will be uniformly distributed, and may be represented, as in Fig. 219a, by a series of arrows which are all made equal, thus representing Fig. 219. As the center of pressure varies from the center of the joint the unit pressure on one side increases and the unit-pressure on the other side decreases as shown in Fig. 219 b. The trapezoid in this diagram has the same area as the rectangle of the first diagram (a), and the center of pressure passes through the center of gravity of the trapezoid. For a 1-2-4 mix, which is an average mix, the box shown in Plate 4 is the proper size. This filled half full of sand and emptied on the mixing board and two bags of cement are opened and spread upon it.

Are You in Sanford Maine? Do You Need Concrete Cutting?

We Are Your Local Concrete Cutter

Call 207-284-0788

We Service Sanford, ME and all surrounding Cities & Towns