Nivert - Data

Data

Customs of the Trade

Nivert Metal Supply, Inc. is dedicated to serving our customers to their complete satisfaction. We shall continue to do everything possible to provide the materials and services you require, and to fulfill orders with efficiency and dispatch, "as ordered" and "when ordered."

Data and descriptions supplied in this handbook are reproduced as a courtesy and service to our customers. We cannot accept responsibility for accuracy. Except where specifically agreed to otherwise, in writing, all goods shall be subject to tolerances and variations consistent with usual trade practices, and all orders are subject to the generally accepted trade customs.

We recommend deliveries be checked on arrival, and any discrepancies be noted and reported at once. Claims for differences or defects in material, when substantiated and approved by us, are limited to the cost of the material involved, but no claims for labor or damage will be allowed.

We look forward to continuing in the future, as we have for many years in the past, an excellent reputation for dependability, accuracy, and good service.

Useful Information

To find area of a circle, multiply square of diameter by .7854.
To find circumference of a circle, multiply diameter by 3.1416.
To find diameter of a circle, multiply circumference by .31831.
Area of a rectangle = length multiplied by breadth. Doubling the diameter of a circle increases its area four times.
To find area of a triangle, multiply base by 1/2 perpendicular height.
Area of ellipse = product of both diameters x .7854
Area of parallelogram = base x altitude.
To find side of an inscribed square, multiply diameter by 0.7071 or multiply circumference by 0.2251 or divide circumference by 4.4428
Side of inscribed cube = radius of sphere x 1.1547.
To find side of an equal square, multiply diameter by .8862. Square. A side multiplied by 1.4142 equals diameter of its circumscribing circle.
A side multiplied by 4.443 equals circumferences of its circumscribing circle.
A side multiplied by 1.128 equals diameter of an equal circle.
A side multiplied by 3.547 equals circumference of an equal circle,
To find cubic inches in a ball, multiply cube of diameter by .5236.
To find cube contents of a cone, multiply area of base by 1/3 the altitude.
Surface of frustum of a cone or pyramid = sum of circumference of both ends x 1/2 slant height plus area of both ends.
Contacts of frustum of cone or pyramid = multiply area of two ends and get square root. Add the 2 areas and x 1/3 altitude.
Doubling the diameter of a pipe increases its capacity four times.
A gallon of water (U.S. standard) weighs 8 1/3 lbs. and contains 231 cubic inches.
A cubic foot of water contains 7 1/2 gallons, 1728 cubic inches, and weighs 62 1/2 lbs.
To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434.
Steam rising from water at its boiling point (212°F.) has a pressure equal to the atmosphere (14.7 lbs. to the square inch.)
A standard horse power: the evaporation of 30 lbs. of water per hour from a feed water temperature of 100°F. into stream at 70 lbs. gauge pressure.
To find capacity of tanks any size, given dimensions of a cylinder in inches, to find its capacity in U.S. gallons: square the diameter, multiply by the length and by .0034.
To ascertain heating surface in tubular boilers, multiply 2/3 the circumference of boiler by length of boiler in inches and add to it the area of all the tubes.

Comparison
A.I.S.I - S.A.E Steel Specifications

The ever growing variety of chemical compositions and quality requirements of steel specifications have resulted in several thousand different combinations of chemical elements being specified to meet individual demands of purchasers of steel products.

The S.A.E. developed an excellent system of nomenclature for identification of various chemical compositions which have symbolized certain standards as to matching, heat treating and carburizing performance. The American Iron and Steel Institution has no gone further in this regard with a new standardization setup with similar nomenclature but with restricted carbon ranges and combinations of other elements, which have been accepted as standard by all manufactures of bar steel in the industry, because it has become apparent that steel producers must concentrate their efforts upon a smaller number of standardized grades. The Society of Automotive Engineers have as a result revised most of their specifications of coincide with those set up by the American Iron & Steel Institute.