Showing posts with label fasteners. Show all posts
Showing posts with label fasteners. Show all posts

Saturday, September 26, 2009

Basic Structural Steel Drawings useful for Fabrication and Erection

Structural Steel Fabricators that actually prepare the steel structure or building heavily depends on detailed drawings prepared by the steel detailer. The steel detailer produce these drawings using the construction drawings supplied by structural engineer depending on material availability and shop fittings. Below is a brief outline of essential drawings required during structural steel fabrication and erection.


Design Drawings

These drawings are produced by structural engineers or architects. Design drawings contains all the details required to prepare structural drawings. They provide data on loads, axial forces, moments, and shear forces. It also contain information of each framing member, precise dimensions, location of each beam and column and general notes for reference.


Anchor Bolt Settings

Anchor bolt plans explain settings of all anchor bolts with regard to the foundations or footings. Typically, the construction of the foundation has nothing to do with steel fabricators job but the masonry plans may contain some items which the steel fabricator need to furnish. They include leveling base plates, anchor bolts, grilles and machinery braces that must be positioned by the masonry person well before the erection of the steel framework. The steel fabricator supply final anchor bolt settings plan to the masonry person to explain he field placement of the anchor bolts.


Column Base Connection Details

This generally illustartes connections between the steel framing and the foundation. It may contain information like grout thickness dimensions, elevation of base plates and anchor bolt projection, etc.


Detail Drawings

Detail drawings present details of all connections. It displays the relationship between connected structural members and may contain common assembly and clearance dimensions. Steel Shop drawings are produced from the connection details furnished here.


Shop Drawings

Steel fabricator uses Shop drawings to fabricate each structural member in steel fabrication shops. Structural steel members are manufactured according to the details and dimensions information furnished in the detail drawings. Standards for shop drawings differ from one fabricator to another but typically all drawings comply with the AISC (Americal Institute of Steel Construction) standards for structural detailing.


Erection Plans

The structural drafter prepares Erection plans for the steel structure. These drawings contain important information such as the location of each member or sub-assembly in the steel framing, column base connection details, anchor bolt plans, etc.


Bill of Materials (BoM)

Typicaly, a CAD draftsman pepares the bill of materials listing all structural members of the steel framing seperately. The bill of materials is displayed on all shop drawings and contain information such as required material quantity, erection marks, shop and field fasteners, size of connecting plates, etc.


General Notes

General notes are required on all steel drawings and provides essential information such as type of steel, size of holes, size of bolts, hole patterns, etc required by the fabrication shop.



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Sunday, September 20, 2009

American Concrete Institute Seeks Papers for 2010 Conventions



The American Concrete Institute (ACI) is currently seeking papers for sessions taking place during the ACI Spring 2010 Convention in Chicago. and the ACI Fall 2010 Convention in Pittsburgh. More information about current Calls for Papers can be found by visiting www.CallforPapers.concrete.org.


Adhesives and Adhesive Anchors

ACI Committees 355, Anchorage to Concrete, and 548, Polymers and Adhesives for Concrete, seek papers for their technical session "Adhesives and Adhesive Anchors for Use in Concrete." This session will take place during the ACI Spring 2010 Convention in Chicago, March 21-25, 2010.

Participants are invited to submit abstracts on topics including, but not limited to, chemical properties and performance of adhesives used for anchoring and attaching to concrete and performance of adhesive anchors in concrete.

Abstracts of 300 words, along with paper title, author name(s), and contact information should be sent to Richard Wollmershauser at wollric@gmail.com no later than Nov. 1, 2009.


Corrosion Resistant Reinforcement

ACI Committee 222, Corrosion of Metals in Concrete, seeks papers for its technical session "Corrosion Resistant Reinforcement - Current Performance and Alternative Materials." This session will take place during the ACI Fall 2010 Convention in Pittsburgh, Oct. 24-28, 2010.

Participants are invited to submit abstracts on topics including field and laboratory studies on the performance of current and future reinforcing bars with the goal of understanding the advantages and disadvantages of the materials and the methods to study these materials.

Abstracts of up to 250 words, along with paper title, author name(s), and contact information should be sent to David McDonald at dmcdonald@epoxy.crsi.org no later than Nov. 30, 2009.



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Thursday, August 6, 2009

Big Dig managers guilty of fraud over substandard concrete

Accidents happens when a construction firm or the persons involved use substandard materials for their construction project not realizing the grave consequences that tail along with it. One of their so-called reasons is they look for an alernative and cheaper materials and methodology as a solution. There is no problem with it as long the application is not critical. But for critical applications, they should have followed the standards and codes.

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P.S. Live Long and Healthy. read more.

The nuts and bolts of screws


The Do It Yourself method. No one likes to hear that they have a screw loose, so let's look at some ways to tighten them up. Here are some methods on how to fix a loose screw right at the comfort of your own home.

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