American Standard

American Standard

Basics of Structural drafting standards, Symbols and Shop drawings

Structural drafting standards are based on the best practices and on engineering codes set up by The American Institute of Steel Construction (AISC) and The American Standards Institute (ANSI). Structural drawing practices refer to a style or quality of a drawing provided by the individual drafter to the job.  It is characterized by crisp black line work, lettering, consistency, and uniformity. The production of precise detail drawings is an art and real engineering accomplishment.  

The actual concept of a structural framework should be provided on the architect/engineer's design drawings. These drawings are converted into detail drawings to provide necessary instructions for the shop fabrication and assembly installation of the different structural members. Through the shop drawings the CAD draftsman pass on all technical information required for the shop to fabricate the structural components.  

To prepare required drawings with accuracy, the draftsman must have a comprehensive knowledge of the standard engineering specifications, better understanding of the shop fabrication and field erection process, and should have necessary skills for structural drafting. Hence, it is obvious that the structural drafter develop optimum drawing skills.

Drawing Numbers:
All structural drawings must be marked using the standard designation. Usually, drawings are numbered consecutively with a letter "S" (S1, S2, etc.)

Drawing Scales:
The standard unit for structural dimensions is feet. Usually, the scale is marked as feet and inches. Any scale based on an "Architect's Scale" can be utilized for structural drawings.

Titles:
All things on a drawing must have a title such as a plan view, elevation, section, detail, note column, etc. Titles are mentioned bold enough to catch the viewers' eye. To give prominence, the titles are underlined. Single line, a double line, or a combination of thin and thick lines can be used for underlining.  

Dimensioning:
The style of dimensioning in structural drafting is the same style used in common architectural drawings. The dimension line is a continuous, unbroken line with the dimension figure placed above the line. Its obvious that to not place the dimension figure below the dimension line.

Should you have any queries or need more information on structural drafting standards, please feel free to contact us. Email us at info@outsourcestructuraldrafting.com

Visit us at http://www.outsourcestructuraldrafting.com/ to get more information.

About the Author

Richard Bose is structural engineer at OSD - an established Structural Engineering consultants offering full services such as structural design analysis, structural drafting and shop drawings services at affordable rates. Email us info@outsourcestructuraldrafting.com

How do you fix a open high limit device in an american standard freedom 80 furnace? Is it expensive?

troubleshooting 4 flashs indicating open high limit device. Can this be repaired by myself or do I need a professional to do this? Will this cost a lot of money to repair? American Standard Freedom 80 furnace.

Your furnace has more than one limit switches. These are safety controls designed to open up the ignition circuit in the event of overheating. Something is causing the furnace to overheat. For the DYI, I would recommend you check the filter and the vent to see if either is restricted. You will need to power down the furnace to reset the fault condition. Outside of that, call a licensed technician. The cost to repair this should be somewhat modest.

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