Use of CAD Drawings in Steel Fabrication and Erection Process
With the advent of digital media and the internet, electronic copies of steel design drawings are becoming easily available to the steel fabricator. When CAD design files and drawings are provided to the fabricator, they often may include other information like architectural backgrounds, structural member specifications and some references to contract documents. This additional information should be removed when creating steel shop and erection drawings to avoid possible confusion.
The fabricator shall neither use nor reproduce any portion of the CAD drawings without written permission of the Engineer of Record (EOR). The use of CAD design files and drawings shall not in any way evade the fabricator’s responsibility for proper checking and coordination of details, dimensions, component sizes and material quantities as required to facilitate the preparation of shop drawings.
Approval of the shop and erection drawings shall constitute the following:
# Confirmation that the fabricator has correctly interpreted the CAD design drawings in the preparation for submittals
# Confirmation that the EOR has reviewed and approved the steel connection details shown on the shop drawings and submitted in accordance with industry standards
Such approval shall not relieve the fabricator of the responsibility for either the precision of the detailed steel dimensions in the shop drawings or the general fit-up of structure members that are to be assembled in the field. Design modifications are often requested by the erector to facilitate proper erection of the structural steel frame. When this is the case, the erector should inform the fabricator well before preparation of shop drawings so that the fabricator may refer the erector’s request to the EOR for resolution.
For any queries related to CAD steel design and shop drawings email us at info@outsourcingsteeldetailing.com
Visit us at http://www.outsourcingsteeldetailing.com/detailing_services.php for further information.
About the Author
James Lee is a steel detailer at OSD – a leading steel detailing firm based in India providing quality steel detailing, steel design and shop drawings to its offshore clients based in US, UK, Canada and Australia. For further details email us at info@outsourcingsteeldetailing.com
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