2OBJECTIVES1. Characterize the various stages leading to the production of finished blueprints.2. Differentiate between an architectural schematic drawing and a set of preliminary drawings.3. Establish why a cover sheet is such an important document.4. Identify the items of information that would normally appear in the title block.5. Describe the various types of lines and symbols that are typically found on an architectural drawing.6. Specify the importance of including building material symbols on a drawing.7. Explain how topographic symbols help the contractor.8. Contrast the main differences between an architect’s scale and an engineer’s scale.9. Clarify the necessity for working drawings to include a detailed set of specifications.
3Various drawing types include: Architectural drawings, which show a layout of the proposed project’s floor plans, elevations, and details.Structural drawings, which characterize how various load-carrying systems will be built.Mechanical/Electrical drawings, which show the physical plant of the structure, such as lighting, power, plumbing, fire protection, and HVAC.
4Various drawing types include: (continued) Site drawings, which depict the relationship between the structure and the property it will occupy, including various site improvements, such as sanitary systems, utilities, and so on.
7The title block should include the following information: The sheet or drawing number, identifying the group and order to which it belongs.The drawing name or title, such as “Second Floor Plan”.The date of completion of the drawing.The initials of the draftsperson.Any revisions to the final set of drawings.
12The most commonly encountered line types in architectural drawings are: Main Object Lines, which define the outline of the structure, or object. They are thick, unbroken lines that show the main outlines of the walls, floors, elevations, details, or sections.Dimension Lines, which provide the lengths of the main object lines. They are very light lines with triangles, resembling arrowheads, on each end. The number that appears in the center break of the dimension line represents the measurement of the specific main object line to which it refers.
13The most commonly encountered line types in architectural drawings are: (continued) Extension Lines, which are used together with dimension lines, and are the light lines that extend beyond the main object lines. The arrowheads of the dimension lines usually reach and touch the extension lines.Hidden Lines, which are light dashes that indicate the outlines of an object normally hidden from view, either under or behind some other part of the structure. The dashes used in this line type are usually of equal length.
14The most commonly encountered line types in architectural drawings are: (continued) Center Lines, which are light lines with alternating long/short dashes, indicating the center of an object, and frequently labeled with the letter C superimposed over the letter L.
22The three-sided version of the architect’s scale has ten separate scales, paired in five groups of two:1/8-inch and 1/4-inch1-inch and 1/2-inch3/4-inch and 3/8-inch3/16-inch and 3/32-inch1 and 1/2-inch and 3-inch
34TIPNotice that the conceptual plan includes several different buildings separated by two crossing streets. You can be assured that the master set of blueprints will include detailed drawings for each of the buildings shown, in addition to the building-to-building cabling specification being used.
35TIPNotice that Figure is a miniature version of the industry standard blueprint that you just unfolded. It may be necessary to place objects on the corners of the industry standard blueprint to keep it flat.
36Figure 10-11: Industry Standard Blueprint Depiction
37LAB 26 QUESTIONS1Do all of the symbols shown in the blueprint relate to cable installations?
38LAB 26 QUESTIONS2Why could the architectural abbreviation MC possibly be confusing?
39LAB 26 QUESTIONS3List the different types of lines that may occur on an architectural drawing, and indicate which ones existed on the blueprint you used for this lab procedure.
40REVIEW QUESTIONS1What are the various types of working drawings?
41REVIEW QUESTIONS2What do the numbers that appear in the center break of a dimension line represent?
42REVIEW QUESTIONS3Why are topographic symbols important to a communications contractor?
43REVIEW QUESTIONS4How do architectural drawings relate to the actual size of the structure they represent?
44REVIEW QUESTIONS5Which document takes precedence in cases where a contradiction between the blue-print and the specifications exists?
45REVIEW QUESTIONS6What constitutes the main difference between the architect’s scale and the engineer’s scale?
46REVIEW QUESTIONS7What is the primary use for a revision marker?
47REVIEW QUESTIONS8Where is a title block usually located on an architectural drawing?