How many types of draft are there?

How many types of draft are there?

Drafts are produced by the rising combustion gases in the stack, flue, or by mechanical means. For example, a blower can be put into four categories: natural, induced, balanced, and forced. Natural draft: When air or flue gases flow due to the difference in density of the hot flue gases and cooler ambient gases.

What are drafting methods?

Manual drafting techniques typically involve drawing different line weights to represent different items. Different line weights can be created by using a different size mechanical pencil lead, or a different size of technical drawing pen.

What are 4 drafting careers?

Drafting Career Paths

  • Architectural Drafting. Architectural drafting students learn to develop technical plans and drawings of buildings and other structures.
  • Civil Drafting.
  • Electrical Drafting.
  • Electronics Drafting.
  • Mechanical Drafting.

What is straight drafting?

Straight draft is the simplest type of draft that forms basis from many other drafts. Straight draft is the most common and can be used with any number of heald shafts. Each successive thread is drawn on each successive shaft. The last thread of the warp repeat is drawn in the last shaft.

What is natural drafting?

Natural Draft is thermal draft. It occurs when heated gases expand. A given volume of hot gas will weigh less than an equal volume of the same gas at a cool temperature. Since hot combustion gases weigh less per volume than room air or outdoor air, they tend to rise.

What is called drafting?

drafting, also spelled draughting, also called engineering drawing, graphical representation of structures, machines, and their component parts that communicates the engineering intent of a technical design to the craftsman or worker who makes the product.

What is technology drafting?

Drafting & Design Technology is an instructional program that generally prepares individuals to apply technical knowledge and skills as each relates to gathering and translating of data or specifications including basic aspects of planning, preparing and interpreting mechanical, architectural, structural, civil.

What are the basic drafting?

The basic drafting procedure is to place a piece of paper (or other material) on a smooth surface with right-angle corners and straight sides—typically a drawing board. In addition, the drafter uses several technical drawing tools to draw curves and circles.

What are the 7 categories of technical drawing?

They may include:

  • Sketches.
  • Design intent drawings.
  • Detail drawings.
  • Working drawings.
  • General arrangement drawings.
  • Assembly drawings.
  • Component drawings.
  • Shop drawings.

What are drafting jobs?

Drafters prepare technical drawings and plans. Drafters use software to convert the designs of architects and engineers into technical drawings. Most workers specialize in architectural, civil, electrical, or mechanical drafting and use technical drawings to help design everything from microchips to skyscrapers.

What kind of degree is drafting?

Drafters generally need to complete postsecondary education in drafting. This is typically done through a 2-year associates degree from a technical institute or community college. The American Design Drafting Association (ADDA) offers certification for drafters.