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Reading a blueprint is like reading a road map. It tells you exactly what you are required to build. Read it wrong and you will build it wrong -- and that can be expensive. This book explains how to read and interpret all types of electrical drawings and diagrams used in residential and commercial construction. There are details on electrical floor plans, lighting layouts, and schematics showing single line and block or power-riser diagrams for wiring circuits. Learn how to lay out an electrical project, what to look out for in dealing with construction specifications and drawings -- especially in terms of today's technology, how to use an engineer's scale for developing and reading site plans, and how to make up and use panel board, connected-load, and other schedules.
Using terminology and applications unique to the electrical industry, this book provides a strong, relevant introduction to reading and interpreting blueprints for aspiring electricians. Blueprint Reading for Electricians, 2E begins by covering fundamental tools and basic sketching, and progresses to include coverage of views, plans, schedules, and specifications. With additional chapters devoted to the types of prints found in a set of construction drawings and clear explanations of their relationships to various electrical installations, the book offers content that is both comprehensive and applicable. Need-to-know mathematical concepts are covered in a straightforward manner, so that readers can feel confident they have sufficient knowledge to learn and apply the material. Both a training manual and blueprint reading reference, Blueprint Reading for Electrical Workers, 2E provides the content, the hands-on exercises, and the real-world applications necessary for readers to master their print reading skills.
This guide is fully illustrated, with a multitude of real blueprint sections, and offers comprehensive information on the subject.
Chapter 1 BLUEPRINTS When you have read and understood this chapter, you should be able to answer the following learning objectives: Describe blueprints and how they are produced. Identify the information contained in blueprints. Explain the proper filing of blueprints. Blueprints (prints) are copies of mechanical or other types of technical drawings. The term blueprint reading, means interpreting ideas expressed by others on drawings, whether or not the drawings are actually blueprints. Drawing or sketching is the universal language used by engineers, technicians, and skilled craftsmen. Drawings need to convey all the necessary information to the person who will make or assemble the object in the drawing. Blueprints show the construction details of parts, machines, ships, aircraft, buildings, bridges, roads, and so forth. BLUEPRINT PRODUCTION Original drawings are drawn, or traced, directly on translucent tracing paper or cloth, using black waterproof India ink, a pencil, or computer aided drafting (CAD) systems. The original drawing is a tracing or “master copy.” These copies are rarely, if ever, sent to a shop or site. Instead, copies of the tracings are given to persons or offices where needed. Tracings that are properly handled and stored will last indefinitely. The term blueprint is used loosely to describe copies of original drawings or tracings. One of the first processes developed to duplicate tracings produced white lines on a blue background; hence the term blueprint. Today, however, other methods produce prints of different colors. The colors may be brown, black, gray, or maroon. The differences are in the types of paper and developing processes used. A patented paper identified as BW paper produces prints with black lines on a white background. The diazo, or ammonia process, produces prints with either black, blue, or maroon lines on a white background. Another type of duplicating process rarely used to reproduce working drawings is the photostatic process in which a large camera reduces or enlarges a tracing or drawing. The photostat has white lines on a dark background. Businesses use this process to incorporate reduced-size drawings into reports or records. The standards and procedures prescribed for military drawings and blueprints are stated in military standards (MIL-STD) and American National Standards Institute (ANSI) standards. The Department of Defense Index of Specifications and Standards lists these standards; it is issued on 31 July of each year. The following list contains common MIL-STD and ANSI standards, listed by number and title, that concern engineering drawings and blueprints.
This is an accident-avoiding prescription for electricians, safety managers, and inspectors, and engineers dealing with electricity any voltage level. Presenting crucial protective safety strategies for industrial and commercial systems, the Handbook references all major safety codes (OSHA, NEC, NESC, and NFPA) where appropriate, creating a unique, one-stop compliance manual for any company’s electrical safety training and reference needs.
A Kirkus Reviews Best Book An NCTE Notable Poetry Book Fourteen poems compiled by award-winning poet and anthologist Lee Bennett Hopkins introduce readers to the various construction people who collaborate to create a high-rise hotel building, from architect to crane operator to glaziers and more. How does an empty lot transform into a new hotel? This anthology begins with a busy construction site, and an architect's (and her daughter's) dreams drawn on blueprint paper. Next, workers with huge machines--backhoes, dump trucks, cement mixers, etc.--roll in. Poems full of noise and action describe every step of the construction process. From welders and carpenters building the skeleton of the building to plumbers and electricians making its insides work, this book celebrates people and equipment working together to build something magnificent.
Improve Your Ability to Read and Interpret All Types of Construction Drawings Blueprint Reading is a step-by-step guide to reading and interpreting all types of construction drawings. Filled with hundreds of illustrations and study questions, this easy-to-use resource offers a complete overview of construction drawing basics for every aspect of the construction process- from site work, foundations, and structural systems to interior work and finishes. Covering all the latest technological advances, noted architect Sam Kubba offers detailed information on: Blueprint standards-ANSI, ISO, AWS, and ASME Computer-aided design (CAD) and computer-aided design and drafting (CADD) Lines, views, elevations, and dimensions Layouts of all construction drawing types-architectural, structural, mechanical, and electrical Specifications-MasterFormat and UniFormat Symbols-materials, electrical, plumbing, HVAC, and others How to avoid costly pitfalls on construction projects You'll also find a glossary of terms for quick reference, convenient tables and charts for identifying symbols and abbreviations, and much more. Inside This Skills-Building Guide to Construction Drawing Basics • Blueprint Standards • Blueprints and Construction Drawings: A Universal Language • Understanding Lines • Types of Views • Understanding Dimensions • Layout of Construction Drawings • Understanding Industrial Blueprints • The Meaning of Symbols • Understanding Schedules • Specifications • ISO Issues, Codes, and Building Regulations • Construction Business Environment