Quality of Structural Drafting Process and Structural Drafting Standards

The structural drafting and drawing domain has undergone dramatic changes over the past decade with the advent of Computer Aided Design (CAD) technologies. With the need of faster construction outputs and ever changing building codes and liabilities it is important to have a definite in-house quality check program for structural drafting. Such a program helps you deliver efficient designs, accurate contract documents, less RFIs and save time and money.

Basic Structural drafting standards contain three elements - formal drafting procedures, drafting guides and checklists. Medium and large construction agencies adopt written formal drafting procedures and standards in order to deliver high-quality drawings on consistent basis and to reduce the risk of human errors. The purpose of common structural drafting procedures is to keep every project member on a single platform and ensure uniformity of design.

Drafting guides are essential to present drafting procedures along with local building codes, theoretical concepts, best practices, practical applications and value engineering.

Checklists prepared at the end of project job helps engineers to remember/recall the hundreds of things that go into drafting and documentation of drawings.

Formerly, Structural drafting was treated as a niche skill. Today most structural drafters are CAD operators who may be expert in using CAD systems but lack knowledge and skills to prepare effective framing plans, draw joint symbols or detail structure dimensions. To avoid such situations local authorities have come up with definite drafting standards which incorporate basic drafting processes and a library of technical information, drawings and blocks.

Drafting process contains rules for preparing framing plans, drawing elevation, sections and details, define beam-column connections, etc. The block library is repository of standard "Blocks" (pre-drawn objects such as joists, angles, bolts, shapes, weld symbols, etc). This results in improved productivity and drawing uniformity across the project.

Post your specific queries at info@outsourcestructuraldrafting.com

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What is Steel Detailing and What Are Steel Detailing Standards?

Steel detailing is the crucial process of producing shop fabrication drawings and structure erection plans from available architectural drawings provided by the architect.

Professional Steel Detailer is an engineering drafter well versed with fabrication and erection procedures. The Detailer must be familiar with welding and installation process along with the knowledge of various types of bolts and fasteners and their strengths. The Detailer must have detailed information regarding finish and cleaning specifications as well as about all kind of structures, bridges, trusses, girders, handrails, bar joists, ladders, railings, stairs and other miscellaneous structural steel members.

The Detailer must be a skilled draftsperson, expert in understanding and analyzing structural design drawings and architectural plans, be able to resolve geometry equations and prepare accurate and meaningful fabrication details and erection drawings. The Detailer should have knowledge of wind and gravity loads and material stresses. He must be familiar with different type of steel and other materials, architectural details of construction and be able to produce various types of beam-beam or column-column connections.

Other issues that a detailer may address include:
# Quality of design drawings
# Documentation for bidding and order
# Participate in BIM Management
# Speed of fabrication process
# Erection & fabrication liaison

Some of the most poplar steel detailing standards are mentioned below.

US Standards:
# American Institute of Steel Construction (AISC)
# American society of civil Engineers (ASCE)
# American Society for Testing Materials (ASTM)
# American Galvanizers Association
# American Welding Society (AWS)
# Steel Erectors Association of USA
# Steel Deck Institute
# Steel Joist Institute

Canadian Standards: Canadian Institute of Steel Construction (CISC)

European Standards: Euro Codes and British Standard Codes (BS)

Australian Standards: Australian Institute of Steel Construction (AISC)

Steel detailers and checkers deliver effective detailing services in compliance with AISC and country-specific steel detailing standards.

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