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Type IV Construction

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We are continuing to look at the different types of construction and the characteristics of each.  This post will outline considerations of Type IV or Heavy Timber construction.

Heavy timber construction is a type of construction we don’t see popping up in new buildings very often. However, there are still a great many buildings that are or were Type IV construction in our jurisdictions.  We need to identify these buildings in both circumstances.

True heavy timber construction does not have void spaces. It is built with masonry or brick exterior walls with large diameter, six inches and more, interior structural components.  There have been debates about how these large beams and structural elements hold up to fire and some have found the large diameter wood components to hold up longer than steel.  The reason for this is that the steel will elongate and deform at around 1000 degrees and is prone to failure at that point. The large diameter components may burn, but they hold their integrity longer than the time it takes for steel to deform.  Obviously, there are variables, but an interesting bit of information.

These fires burn hot and for a long time. These are typically large buildings and have an additionally large fire load, making extinguishment difficult.  Many times we find these buildings in more urban areas and in highly dense locals. However, churches and resort lodges are common places for this type of construction.  Exposure protection is of the utmost importance and establishing an effective collapse zone is important.

When these building get remodeled and are altered, they can then be considered Type III construction.  The reason for the Heavy Timber classification is the benefit of the extended time of burning and the lack of void spaces. We lose some of that as false ceilings and new framed walls and floors are added to create lofts or office space.  Just something to consider because you will need to plan accordingly for the interior changes that are being made to these types of buildings.

Train hard, master the basics and have plan before you go to battle. Stay safe.

Lodge picture from Vermont Timber Works, visit them at vermonttimberworks.com

Posted by on February 10, 2011 • Filed under: buildling construction, fire codes, fire-rescue-topics, firefighting-operations, fires, heavy timber, situational awareness, Uncategorized • Tagged: , , , , , , , , , ,

Fire Service Books

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This is a little off the beaten path for me and my blogs, but it is something that I have been paying more attention to lately.  I have been laid up from a hernia repair and have been reading and doing a little research for other projects and it occurred to me that I utilize the same three books on a regular basis.

No matter what level you are at in the fire service, you should be building a decent sized library of fire/emergency related books.  This is one more method to staying sharp and on top of your game.  Having quality information to turn to for those forgotten tricks of the trade or to remember a characteristic of a certain type of construction is paramount and makes you a better firefighter.

Here are the three books that I use on a regular basis and why.

1. “Building Construction for the Fire Service,” 3rd Edition, by Francis L. Brannigan.

This book was one I got during the mid 90′s for a college course and I have it highlighted, marked and it is never too far from my grasp. The great thing about this book is that it has never gotten outdated.  The information is still relevant and insightful.  This is definitely one book that should be on your shelf.

Make sure you look at the “Tactical Considerations” in the chapters that give some ideas on how to apply the lessons to firefighting tactics.

2.  ”Collapse of Burning Buildings: A Guide to Fireground Safety,”  by Vincent Dunn

This book has a great deal of content that is covered in Brannigan’s book but more directly applied to the collapse of these buildings.  Chief Dunn goes into great detail how these buildings collapse and the problems that different types of collapses cause.

The illustrations are great examples for those that need some visual help and you can apply this information immediately as a firefighter and fire officer.  This book is a great tool to have company discussions with. Sit down with your crew and pick a chapter or topic and start playing out scenarios in your jurisdiction where these dangers exist.

3. “Safety and Survival on the Fireground,” by Vincent Dunn.

This book is everything firefighting.  Just about anything that you want to know about firefighting is in here. The great thing is that the information is short, to the point and easy to apply to situations.

Keeping these books and others within reach is a good way to stay engaged. These resources gives you valuable information at your fingertips when you need it. It is also a good way to pass on information to others and to have meaningful conversation about “fire stuff.”

Stay safe and keep your mind on the task at hand, becoming a better firefighter.

Other places to get books for the fire service:

Fire Engineering

Fire Service Books

FireBooks.com

FireRescue1

IFSTA

The Fire Barn

These are just a few, if you know of others, please let us know.

Posted by on February 4, 2011 • Filed under: backdraft, buildling construction, command-leadership, fire stopping, fire-rescue-topics, firefighter-safety-health, firefighting-operations, fires, forcible entry, heavy timber, high rise, i joists, search, self rescue, situational awareness, size up, training-development, training-fire-rescue-topics, trusses, vacant building fires, vent, ventilation, VES • Tagged: , , , , , , , ,

Old Building Systems

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Old wire insulators still in use.

Old wire insulators still in use.

This is an old building that still has many old building systems in use.

As you can see from the picture, these wires are still in use with these old ceramic insulators.

These are unique and not seen very often.  Some of these old cloth wires are worn and can give you a shock or short out.

Just be aware in these older buildings.  For example, in this particular building, there are a lot of places that had obvious signs of water leaks. We know how that turns out when electric is involved.

Stay safe and be careful out there. Take the time to look at the older buildings in your area.  There is a lot to see and learn.

Posted by on February 9, 2010 • Filed under: buildling construction, electrical, fire-prevention-education, heavy timber, inspections • Tagged: , , , ,

Heavy Timber and Open Junction Boxes

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Open junction boxes and some heavy timber.
Open junction boxes and some heavy timber.

 

This picture shows some heavy timber construction in an old shoe factory.  These are about 12-15 foot ceilings.  You just don’t see this kind of construction any more.

Secondly, you can see the open junction boxes with wires hanging out.

This building is still operating mostly as storage. There is not any production anymore, but there are many combustible foams and plastics that are used in shoe soles and rubber mats.

Although the wires aren’t likely to be touched by anyone as high as they are, they could and probably will short or arc from inadequate installation.

Keep these thing in mind when doing your inspections.  Take the time to look at these old buildings and ask about it’s history.  These buildings won’t be around much longer, but, boy did they have some charm.

Take care and stay safe.

Posted by on January 26, 2010 • Filed under: buildling construction, electrical, fire codes, fire-prevention-education, heavy timber • Tagged: , , , ,