DIS-TRAN Steel Blog

DIS-TRAN Overhead Solutions: A 50 Year Supplier of Wood Utility Products

Posted by Melissa Hines on Apr 1, 2015 4:52:00 PM

DIS-TRAN Overhead Solutions, LLC has been providing distribution crossarms to utilities for 50 years. Today, we design, manufacture and treat a complete line of Douglas Fir and Southern Yellow Pine distribution crossarms, end plated crossarms, ground wire molding and wood transmission arms and assemblies. We're celebrating 50 years in the business by reflecting on some of our major milestones. 

HistoryTimeline

In July 2006, we began production in our newest location in Vancouver, WA. With two separate facilities located in Pineville, LA and Vancouver, WA, we are available to customers from coast to coast for quick lead times and amazing response to storm restoration. These two locations enables flexibility and allows us more opportunities to effeciently serve the entire country.

Through Columbia Vista Corporation, DIS-TRAN Overhead Solutions, LLC plant facilities in Pineville, LA and Vancouver, WA have both been Forest Stewardship Council (FSC) certified, COC #SW-COC-00244. We have made a commitment to the environment and to promoting the improvement of forest management. We are also the only certified environmentally friendly "green" wood products supplier.

We added transmission products to our scope of work in October 2011. These transmission products include x-braces, vee and knee braces and tension braces along with the necessary hardware.

50 Years in the Making
With the addition of a full time engineer on staff, we can provide you with detailed drawings of structures and assemblies along with accompanying material lists to aid in planning and construction. Our engineer is also available to answer any questions related to our products. 

Is there any additional products you would like to see DIS-TRAN Overhead Solutions, LLC carry? Please let us know. We are always looking to pursue new opportunites especially if it will help fulfill the needs of our customers.

Make sure to follow us on Facebook and LinkedIn to stay up-to-date with the latest happenings.

 
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Tags: wood distribution crossarms, transmission structures, manufacturing, wood transmission structures, Engineering

7 Obvious Reasons to Use Wood Distribution and Transmission Structures

Posted by Brooke Barone on Aug 27, 2014 12:17:47 PM

While many say “Out with the old and in with the new,” this might be true for hairstyles, tube socks or shag carpet, but with over 130 million wood utility structures across America that are still in service today, this is simply not the case.

Wood utility structures have an undeniable reputation for being reliable, versatile and cost-effective.Wood distribution and transmission structures remain highly preferred in the utility industry due to their ease of construction, climbability and design flexibility.

Wood Transmission Structures

Reliability Wood transmission structures have higher Basic Insulating Levels (BIL), which can help reduce lightning flashovers, cutting down on power outages.

Cost-effective With economical initial costs and low overall life cycle costs, wood can directly reduce the impact of operating expenses.

Safety Since wood transmission structures have been around for decades, utilities and lineman are very familiar with proper use and handling of the products.

Why use wood transmission structures?

  1. Lower cost
  2. Long and proven service life
  3. Adaptable to many different applications
  4. Easy to handle and store the structures
  5. Natural flexibility providing  high performance under load
  6. Can be easily modified in the field
  7. Can be supplied quickly in times of crisis

trans pic green

The general standards that wood transmission structures must meet include ANSI, RUS, NESC, WCLIB and AWPA. And just like steel, concrete and other materials, there are countless configurations for wood transmission structures. 

Just to name a few, there are:

  • Single Pole with Traditional Crossarms
  • Wishbone Structures
  • Two Pole H-Frame Structures
  • Multi-Pole H-Frame Structures

trans 2 green

When considering which manufacturer to choose, you might want to consider their history in the supply of products in the utility market, the location and number of facilities, in-house design capacity, access to raw materials and available inventory for standard items, especially when time is critical. All of these factors could make or break your recovery response when natural disasters strike.

Dive Deeper Into the Transmission World

 

Tags: utility industry, wood distribution crossarms, wood crossarms, utilities, transmission, wood crossarm, wood transmission structures, wishbone structures, H-Frame structures, wood structures

7 Obvious Signs to Look for in Wood Distribution Crossarms

Posted by Brooke Barone on Jan 23, 2014 4:45:00 PM

Without knowing all the Rural Utilities Service (RUS) or American National Standards Institute (ANSI) specifications off the top of your head, it can be hard to decipher what is considered “on grade” relative to  wood distribution crossarms. However, here are a few general signs that can help you determine if “The Wood is Good”.

1. Size- review the section size of the arm. It’s a simple measurement; when you purchase a particular size, make sure it meets that measurement.

2. Tolerance- this is the allowable variation between the size specified and what may be supplied, which for both RUS and ANSI, can be plus one-eighth of an inch to minus zero.

3. Density- for close grain material, there should be a minimum of six growth rings per inch on at least one end. There are exceptions to the rules, such as having five rings, but it has to be with half or more summerwood present.

4. Drilling Pattern- this can either be one of the industry standards or specified by the end user. However, hole diameter and spacing must be correct, regardless of the standard.

5. Splits- are a separation of the wood from one face to the opposite or adjacent face and they are not allowed.

6. Seasoning Checks- “cracks” that can form when the wood is dried. If dried improperly, the check could go too deep; they are limited in length and width.

7. Shake- separation within the same grain; generally a cause for rejection but may be considered acceptable by some if more than one inch from the face. 

wood distribution crossarm

While the seven listed above are more visual signs, there are also more in-depth ways of knowing if the quality of the wood is good. Below I’ve listed out just a few terms that can come up when inspecting wood distribution crossarms under RUS specifications.

Pitch and bark pockets are concave areas on the surface formed from collecting pitch or bark trapped between growth rings. They are limited in number and size on the top of the crossarm as they hold water.

Insect and pin holes are from insects burrowing into the wood. No insect holes are allowed over 3/32” dia. and “scattered” pin holes are allowed less than or equal to 1/16”

Wane is an absence of wood on an edge or corner due to any reason but an eased edge and though allowed is limited in size

Compression wood is abnormal and often brittle wood formed on underside of bent or leaning trees; is not allowed on any face

3 Forms of Warp:

1. Crook is permanent bending of the lumber edgewise; limited

2. Bow is permanent bending of the lumber flatwise; limited

3. Twist is a permanent spiraling of the lumber; limited

Heart and sap stain is discoloration due to exposure to the elements; heart stain is not allowed but medium stain sapwood is acceptable

Decay is disintegration of wood due to fungi and should not be present in the wood

Slope of grain is grains direction relative to the ends of the piece; limited based on section size

Heart center is when the piece of lumber includes the very center of the log; is not allowed for Douglas-Fir but is acceptable in Southern Yellow Pine

There are countless rules and requirements that we could go into, but it can get a little confusing. If you would like to know more, you can download our RUS Cheat Sheet for Wood Distribution Crossarms to find out more unique requirements. 

 

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Tags: wood distribution crossarms, wood crossarms, crossarm drilling pattern, pitch and bark pockets, slope of grain in wood crossarm, southern yellow pine, douglas fir, heart center of lumber, compression wood, rus rural utilities service, ansi american national standards institute, wane wood

Wood Structures: Still in the Game or Ancient History?

Posted by Brooke Barone on Jan 18, 2013 3:04:00 PM

While many say “Out with the old and in with the new,” this might be true for hairstyles, tube socks or shag carpet, but with over 130 million wood utility structures across America that are still in service today, this is simply not the case.

Wood utility structures have an undeniable reputation for being reliable, versatile and cost-effective.Wood distribution and transmission structures remain highly preferred in the utility industry due to their ease of construction, climbability and design flexibility.

Wood Transmission Structures

Reliability Wood transmission structures have higher Basic Insulating Levels (BIL), which can help reduce lightning flashovers, cutting down on power outages.

Cost-effective With economical initial costs and low overall life cycle costs, wood can directly reduce the impact of operating expenses.

Safety Since wood transmission structures have been around for decades, utilities and lineman are very familiar with proper use and handling of the products.

Why use wood transmission structures?

  1. Lower cost
  2. Long and proven service life
  3. Adaptable to many different applications
  4. Easy to handle and store the structures
  5. Natural flexibility providing  high performance under load
  6. Can be easily modified in the field
  7. Can be supplied quickly in times of crisis

trans pic green

The general standards that wood transmission structures must meet include ANSI, RUS, NESC, WCLIB and AWPA. And just like steel, concrete and other materials, there are countless configurations for wood transmission structures. 

Just to name a few, there are:

  • Single Pole with Traditional Crossarms
  • Wishbone Structures
  • Two Pole H-Frame Structures
  • Multi-Pole H-Frame Structures

trans 2 green

When considering which manufacturer to choose, you might want to consider their history in the supply of products in the utility market, the location and number of facilities, in-house design capacity, access to raw materials and available inventory for standard items, especially when time is critical. All of these factors could make or break your recovery response when natural disasters strike.

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Tags: utility industry, wood distribution crossarms, wood crossarms, utilities, transmission, wood crossarm, wood transmission structures, wishbone structures, H-Frame structures, wood structures

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