World s longest rafter.: Barns Pole Barns  -- Home Building Discussion Forum and Review World s longest rafter.: Barns Pole Barns -- Home Building Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index
New As Posted | Active Subjects



www.emerichsales.com - New & Used Equipment
          View Tractors For Sale!


www.partsbynet.com - Lawn and Garden Equipment Parts


Bernardsville Landscape Lighting
Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Barns Pole Barns Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 01-04-2009, 09:49 Post: 159048
hardwood

TP Contributor

Join Date: Dec 2002
Location: iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3582

2
Filter by User
 World's longest rafter.

A couple nights ago I watched something about colossal building type stuff on the Science Channel. The world's longest self supporting rafter is 475 ft. long, it's holding up the roof on a new convention center somewhere in South Korea. It was welded up from steel components on site and built in place. The bottom stretcher is in the concrete floor, and the ends of the rafter connect to it under the floor. And I thought 90 footers were long. Frank.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Technorati | Furl | Stumble This

 01-04-2009, 11:02 Post: 159049
candoarms



View my Photos

View my Photos  Pics
Join Date: Mar 2007
Location: North Dakota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1929
 World's longest rafter.

Frank,

I like watching those programs on the Science Channel.

In one such program they interviewed an engineer who discussed the new possibilities available to him, due to the powerful computers we have these days.

If not for the ability to test and prove these concepts in virtual reality (computer modeling) no investor would ever take the risk of putting up the money for the full-scale buildup.

He discussed all of the things he had to go through to prove to the investors that his design concepts would actually work. (trash in = trash out)

If not for computers.........

Joel






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Technorati | Furl | Stumble This

 01-04-2009, 16:23 Post: 159059
earthwrks

TP Contributor

View my Photos

View my Photos  Pics
Join Date: Dec 2003
Location: Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3853
 World's longest rafter.

Hopefully I got my numbers right, but when I was in the auto industry before computer design analysis the Feds required something like 25 completely built car crash tests. A typical car 10 years ago cost about $1 million per copy. Then computers came into full swing. They relaxed the requirement to just 5 cars.

Going back to Hardwoods post, my contention with modern engineering is: It doesn't matter how well it designed--it matters how well and how it's built. Case in point the Petronis(sp) Towers has one tower that had 5 floors that had faulty concrete that had to be removed and replaced before construction could continue.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Technorati | Furl | Stumble This

 01-04-2009, 19:15 Post: 159068
hardwood

TP Contributor

Join Date: Dec 2002
Location: iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3582

2
Filter by User
 World's longest rafter.

Maybe someone else who saw the same program can help me a bit here. The original design was updated by another engeneering firm who removed several thousand puonds of steel reenforcment plates at the welded joints of the rafter. Their contention was that the plates didn't add enough strength to compensate for their own weight. Anybody wanna sit under this deal during a windstorm?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Technorati | Furl | Stumble This

 01-05-2009, 08:52 Post: 159083
AnnBrush



View my Photos

View my Photos  Pics
Join Date: Mar 2004
Location: Troy OH
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 461
 World's longest rafter.

"my contention with modern engineering is: It doesn't matter how well it designed--it matters how well and how it's built"

How well it is built will not overcome an inherently faulty design.

The perfect design relies completely on the construction being performed to the specs that were inherent to the design.

The two concepts go hand in hand. In the first instance I suppose you could use the carburetor as an example when employed in mass production vehicles. The absolute best built carburetor is easily surpassed in reliability by a simple (perhaps even averagely built) fuel injection system, today you don't see any carburetors in vehicle production, the design is just not durable enough. On the other hand optical lenses used in most scientific instruments are relatively easy to design but require extremely tight manufacturing tolerances to work properly and the care and expertise required in manufacture is the primary reason for their high cost.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Technorati | Furl | Stumble This

Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Barns Pole Barns Forum

Thread 159048 Filter by Poster:
AnnBrush 1 | candoarms 1 | earthwrks 1 | hardwood 2 |




Most Viewed

+ poles in the ground vs. concrete footings with anc
+ Help Identifying Metal Siding
+ Finishing the interior - Pole Barn?
+ New pole barn- anyone ever build a raised wood flo
+ Pole barn vs. frame building
+ heating pole barn
+ Rough cut lumber
+ MiracleTruss buildings
+ pole barn for a cabin?/ insulation issues
+ How much lighting

Most Discussion

+ New barn
+ New addition for my new Tracto
+ The Icynene Insulation System
+ vinyl siding
+ Heating a Garage
+ poles in the ground vs. concre
+ Land Preparation
+ Garage Heater
+ Increasing door height to fit
+ Advice on building a shop

Newest Topics

+ Concern for building stability
+ stone vs concrete floors
+ Utility poles or Presure treated posts
+ Windows for an existing metal building
+ Help Identifying Metal Siding
+ Pole Building House Recommendations
+ Pole Barn advice and help before building.
+ Barn Roof leaks Contractor warranty concerns
+ Pole Barn vs Conventional foundation and standard
+ Pole Barn Building Materials List and Plans













Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines