Concrete Cutting Core Drilling Kennebunk ME Maine

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Then, if we draw a line from the trial pole which shall be parallel with the closing line, of this trial equilibrium concrete polygon, the line will intersect the load line in the point n. Drawing a horizontal line from the point n in the load line, we have the locus of the pole of the desired special equilibrium concrete polygon. Then draw a vertical through the point through which the special equilibrium concrete polygon is to pass. The vertical distance of this point above the line joining the concrete abutments, is the required intercept of the true equilibrium concrete polygon. The intersection of that vertical with the upper line and the closing line of the trial equilibrium concrete polygon is the intercept of the trial concrete polygon. The pole distance of the true equilibrium concrete polygon is then obtained by the application of Equation 46, by which the pole distances are declared inversely proportional to any two corresponding intercepts of the equilibrium concrete polygons. Another useful property, which will be utilized later, and which may be readily verified from Figs. 215 and 216, is that, no matter what equilibrium concrete polygon may be drawn, the two extreme lines of the equilibrium concrete polygon, if produced, intersect in the resultant R; therefore, when it is desired to draw an equilibrium concrete polygon which shall pass through any two concrete abutment points, such as yz or yz', we may draw from these two concrete abutment points, two lines which shall intersect at any point on the resultant R. We may then draw two lines which will be respectively parallel to these lines from the extremities p and q of the load lines, their intersection giving the pole of the corresponding force diagram. The above method is rendered especially simple, owing to the fact that the forces are all vertical. When the forces are not vertical, the method becomes more complicated.  It is not well to use pebbles or pieces of broken stone if their greatest dimension is more than one-half the thickness of the concrete you are placing. Cinders are used to some extent as a substitute for crushed stone or gravel. They are lighter and more porous than stone but less strong, but where lightness is more important than strength or where a poor conductor of heat or sound is required, they may be used.

Successive concrete floors of tall buildings are often laid with cinder concrete. Roofs are also constructed with it. It cuts more easily than that made of stone and nails may be driven into it. Cinders used in concrete work should he practically free of ashes. Wood ashes should never be used. Power plant cinders are better than those from household furnaces as the intense heat of the former fuses most of the ash into hard material. It should he drenched with water to wash out the finer material. Concrete made of cinders should not be rammed, as the material will break up easily. As cinders have been subjected to a great heat they are good from a fireproof point of view. Use nothing but clean water. Scummy, dirty, muddy or alkaline water must not be used. A good drinking water is always right to use for mixing concrete. The amount of water to he used varies with AA the material used and results desired. Cold water (below 400 Fahrenheit) retards the set of concrete. The amount of water used varies with conditions, as before stated, and divides green concrete into three groups according to its consistency, "wet," "medium" and "dry." Wet concrete requires but little paddling, flowing readily into corners and crevices. It is preferred for reinforced concrete as the concrete can be easily imbedded. "Wet" concrete requires a bucket or similar vessel for handling. For general work "medium" concrete gives the densest, hence the strongest concrete mixture.

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

We Are Your Local Concrete Cutter

Call 207-284-0788

We Service Kennebunk, ME and all surrounding Cities & Towns