Wood Picket Design, Scale and Sizing

Comments from the peanut gallery are common with many of my columns. I am proud to say that many of these letters, emails or calls are positive. Sometimes, people tell me I forgot something. That was the case with this fencing column. I received an email a day or so after the column appeared in one of the first papers to run the column. The woman was quick to point out that I didn't tell people to call their local utility companies before installing a fence. It turns out that a neighbor of hers single-handedly cut off the area's cable TV and phone service while digging a fence post near the street! Erika, touche! Excellent point!

Details

Erika's email message made another point as well. Even building a simple fence requires pre-planning, thought and attention to detail. I'm sure that homeowner didn't even think that underground cables would be near his fence location. It has happened to me. The strangest things are buried in the weirdest places!

Detailing is also very important with picket fences. Anybody can install square top cut posts and square pickets. That requires no thought or planning. But, if you take some time and research different styles, types, and patterns, you can create without too much work an elegant fence - one that will be the talk of the neighborhood. Your friends and neighbors will be envious. I know this for a fact.

Scale and Style

A picket fence needs to match the style and scale of a house. Contemporary houses can benefit from fencing that recreates the lines and materials used in the house. Colonial style housing looks great with the standard white picket fence. A Victorian house may require ornamentation on the posts and gingerbread within the fence. Be sure that the fence you choose to build will enhance your house, not detract from it or lessen its value.

I can assure you that if you spend some time at your library looking at architecture books for different periods of building, you will see exactly what I am talking about. There are numerous books at my own library that illustrate fences and architecture styles.

Local Fence Companies

You never want to re-invent the wheel. That is a waste of time. I suggest that you also visit your local fence building companies. You will probably see some illustrated pamphlets that will help your creative juices begin to flow.

The fence supplier may also have some great construction tips, supplies, and precut materials.

Fence Post Spacing

What is a good distance between fence posts? Well, there is no perfect answer. For picket fences, I would never exceed a 10 foot spacing between posts. A 6 foot spacing is the absolute minimum that I would place posts - unless of course you had to stair step fencing or posts down a very steep hill.

Picket Sizing

I have seen wood picket fences with pickets as wide as 5.5 inches. Mine is the narrowest I have ever seen, that being a 1.5 inch width for each picket. Your overall design will determine what is best for you. In all cases, I would try to make sure that the pickets can be cut from a larger piece of wood with minimal waste.

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Building and Installing a Wood Picket Fence

Make Sure It Is Straight

The first thing you need to do is decide where you are going to build your fence. Straight fence lines are easy to work with, however, curves and angles are not all that hard to accomplish.

If your fence will be on or near a property line, I urge you to get that line surveyed. Check with your local zoning and building department. Zoning and building codes can absolutely contain language that restricts fencing - even decorative picket fences. The codes even tell you who gets to look at the "good" side of the fence! These codes can even restrict shrubbery! That is the case in my own village.

Hilly Terrain

If your land is hilly, always install the fence posts plumb. If the ground is very steep, you will have to stair-step your pickets or allow the individual pickets to follow the contour of the ground.

Post Hole Depth

I like to bury fence posts at least 2 feet into the ground. I never surround my fence posts with concrete. I just tightly tamp dirt or crushed gravel back around each post. Concrete makes it tough to remove the fence post at a later date. Plus, if you use a square fence post, the concrete almost always develops shrinkage cracks after it dries. The post can then rattle within the concrete. I dig my posts as I build the fence. It is a mistake to dig your holes first. If you make an error in your measurements - especially with a long fence, many of your post holes may be off!

Gate Posts

If you intend to have a gate within your fence row, then place those posts at least 32 inches deep. Gate posts that carry the weight of a swinging gate must be surrounded with 6 inches of concrete on all sides of the post. You should also run a diagonal rail from the top (or near the top) of the gate post to the bottom of the nearest fence post. This will help keep the gate post from tipping over from the weight of the gate.

Pre-Cut All Components if Possible

If you decide to trim or shape the top of your posts and pickets, you should do this before you build the fence. An exception to this might be the original concave design fence my wife Kathy first saw. The pickets on that fence I would cut out after I installed longer than necessary pickets. I would then have traced the curved pattern on the pickets and cut them in place on the fence with a saber or sawzall. The pickets you see on my fence were all cut before they were installed. Not only did I cut the arrow tip before installation, I also cut each picket to length to make the curved shape. I accomplished that process by using a piece of plywood as a form. I created the arch shape with a thin piece of 1/4 inch thick lattice. That shape was traced by pencil onto the top of the plywood.

Since the space between my posts was exactly 8 feet, I was able to place 38 one and 1/2 inch wide pickets one inch apart. I drew this exactly on the plywood. All of my precut arrow point pickets were 4 feet long. I placed each picket in the spot it belonged on the plywood. Since the tip of each picket was touching the arched line, some pickets hung out over the plywood. I snapped a chalk line across the bottom of the pickets where each one hung over. I then cut these off with a saw. BINGO! The bottoms of the pickets were now equal and the tops had the perfect curve. All I did next was to nail them in place on the rails in the proper sequence. As long as the bottom of the pickets was flush with the bottom rail of the fence, the curve on top would be perfect.

Fencing Fasteners and Fence Rails

The bare minimum you should use is hot double dipped galvanized nails. If you want ultra long term performance, then purchase stainless steel nails. You will have to hand nail your horizontal rails into your posts. I like to predrill these holes in the rails so that you don't split them as you nail.

Remember, the pickets will add substantial weight to the fence. If you decide to build a fence that someone might sit on, then you need to use steel brackets to support the rails or take the time to mortise them into the fence post. Mortising is dangerous to do unless you make the mortises extra deep. If you make tight mortises, you will not be able to get an old rail out or a new one in! If the mortises are deep, you can cut the rails so that there is enough room to slide them in and out, much like a split rail fence.

If you have access to a pneumatic nailer, you might want to use it for the pickets. It is faster and the rails will not bounce like it does when you hand nail pickets. You can buy fairly decent galvanized nails for pneumatic nailers.

Paint / Stain or Sealers

No matter what you intend to do with your fence, you want to pretreat as much of the lumber as possible. Since my fence was made using two different species of wood, I actually built the framework (CCA treated pine posts and horizontal rails) first and let that sit for nine months. This allowed the treated lumber to dry out. I then painted the framework before applying any pickets. The pickets had already been pre-painted before I cut them to length as described above. After cutting them, I painted the bottom that would be at or near the soil level.

If you don't treat all the surfaces before you build you fence, you can have premature finish failure. Fences are exposed to the worst weather. Water will soak between pieces of wood where they touch one another. If these surfaces are not sealed or painted, water will begin to attack the wood and the finish. It takes an extra day or so to pre-paint the wood, but it will add years and years of extra life to the first paint / sealer job as well as all following coatings!

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Chain Link Fence

Chain link fencing is not the subject at most cocktail parties to be sure! But if you are looking for a durable fence that can withstand enormous amounts of abuse, this is the material to go with. If you don't believe me, simply visit a local playground or school yard. Invariably you will see chain link fencing that has been tortured by the local youngster population.

Get the Right Stuff

If you were a dishonest person, chain link sales might be attractive to you. I can just see a sleazy salesperson talking with customers and showing them the lightweight chain link and the thin wall fence posts. When you hold and touch samples, they seem substantial. But once installed the chain link fence doesn't seem like it will hold up for long.

The fencing you see at city playgrounds is industrial strength so to speak. You may not want it, but there are grades in between the lightweight material and the heavy duty material. If you are lucky, the fence dealer may have small test sections set up that allow you to do side by side comparisons of the actual full size fence or chain link panels. This is the only way I could make an informed decision. If your dealer doesn't have full size panels, then ask for addresses of places where different fences have been installed. Go touch and feel the different fence gauges and fabrics on a short road trip.

Doing it Yourself?

Are you thinking of installing a chain link fence yourself? If so, you need to get a very handy pamphlet from the Chain Link Fence Manufacturers Institute (www.chainlinkinfo.org). Go to their web site and find Eight Steps to Chain-Link Fence Installation. It's available for free download in PDF format.

Here are some key points you will find in the DIY pamphlet:

1. Get a survey done! Are you thinking of installing the fence right up against the property line? Think again! What about the fence post holes? You can't dig on your neighbor's property! Plan to keep the fence a minimum of 4 inches on your property. Six inches might even be better.

2. Set all terminal posts first. These posts are the ones that turn corners or make grade transitions. Once these are set you can then calculate even distances between terminals for your regular line posts. The pamphlet has a handy table that gives you the distances for even spacing.

3. Install line posts. If your lot is level or slopes evenly in the same plane, then you simply string a line between terminal posts. If the ground between the terminal posts rises and falls slightly then the line posts must stick up the same distance from the top of the ground. This will allow the top of the fence to be parallel with the ground. This always looks best.

4. Be sure the concrete around the posts is not too wet and that the concrete is humped with the highest point being at the posts. You want rain water to flow off the concrete, not puddle there!

5. Install all of the fittings on the posts.

6. Install the top rails. This is easy!

7. Install the fabric and stretch it.

I have made it sound easier than it really is, but the pamphlet fills in with some very good detailed tips. Like anything else, you simply need to take your time!

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Quality Chain Link Fence Checklist

Quality Chain Link Fence Checklist

chain link fenceThe following list is courtesy of the Chain Link Fence Manufacturers Institute (www.chainlinkinfo.org). As you might imagine, they want their products installed correctly. They want you to be satisfied with your new chain link fence.

The satisfaction process starts with buying the right fence in the first place. Always be sure you upgrade to thicker posts and stiffer chain link fabric. The samples may seem strong, but the finished product can be flimsy. Here are things that you should check before, during and after the fence is being installed:

  1. Have the fence lines been properly marked?
  2. Do the fence lines extend beyond the property lines? The fence should be 4 to 6 inches inside the lines.
  3. Have all zoning regulations and restrictive covenants been satisfied?
  4. Does the contractor have a valid permit that allows the fence to be constructed?
  5. Have all underground utilities been marked?
  6. If utilities are close to any fence posts, what will be done to protect underground lines?
  7. What is the diameter of the fence post holes?
  8. Will the holes be a uniform width from top to bottom? V shaped holes that are smaller at the bottom than at the top can heave in cold winter weather.
  9. Are the post holes as deep as the contract states they will be?
  10. Do the fence posts extend down into the holes as far as the contract states they will extend?
  11. How far apart are the fence posts? Do they exceed the distance set forth in the contract or specifications.
  12. Are the posts spaced equally?
  13. Are the fence posts the same height? Fences should follow the contour of the ground. They should only be level if the ground is level.
  14. Is the chain fabric the type and size that was specified?
  15. Is the fabric stretched tightly?
  16. Does the fence look crisp? Is it straight and true?
  17. Do the gates operate smoothly?
  18. Has all construction debris and extra soil been removed from the jobsite?
  19. Has the contractor provided you with a notarized affidavit stating that all labor and materials are paid up to date?
  20. Are you satisfied completely, have all questions been answered, AND most importantly, do you have a copy of the WRITTEN warranty from the fence manufacturer and the installer?

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AsktheBuilder mp3 Radio Show July 16 2005

Summary: Tim opens the show talking about soil moisture problems caused by the dry weather. Caller questions include removing deep mildew stains from grout, condensation on basement walls, the best roof ventilation, wall cracks from dry soil and sewer rats in a city house. Yeeech!

Each title below is a direct link to a downloadable mp3 file. Just click the title if you want to listen. Right click if you want to download into your computer to save and play at a later date.

The Copyright to all radio segments is owned by Tim Carter. I would love to know what you think of these radio segments. Do you like them? Do they help you? Have they saved you money and/or time? Let me know by sending me an email: [email protected]


 

Tim Talks About Soil Moisture and How to Prevent Sturctural Cracks from Settlement

Melinda - Removing Deep Mildew Stains in Tile Grout

Mike - Black Streaks on White Gutters

Marla - Condensation on Basement Walls

Ray - Best Roofing Ventilation

Peggy - Wall Cracks From Dry Soil

Sylvia - Sewer Rat Infestation

Books on Fences

wrough iron fence & kids

Reading Pays Off

If you are thinking of doing some fence building on your own, one or more of these books may save you lots of time and money. Most of them have great illustrations and clear instructions. There are other fence books out there as well. Read several to obtain multiple viewpoints. No one person has all of the correct answers!

Books on Fencing

There are some spectacular books on the subject of fencing. Some are simply idea and technique books, while others are detailed do-it-yourself books that take you through the entire process. I was unable to find a book devoted entirely to chain link fencing. Some of the books had chapters on it, though. I did find some great books, listed below, that you can click on at the bottom of this page and order.

Fences and Gates by Sunset Books

Master the basics of building fences and gates. Step-by-step illustrations guide you every step of the way from planning to building, maintenance to repair.

Tricks of the trade help you achieve professional results. You'll find out: How to plot a curve...How to mix your own concrete...How to use a water level...How to brace a gate. Color photos provide examples of different styles and materials available. "Toolkits" tell you exactly what tools you'll need for each job.

Sunset editors demonstrate the latest tools, techniques, and materials to make your work easier and safer, and show how to save time and money on your next home improvement job.

Fences and Retaining Walls by William C. McElroy

Everything you need to know to run a profitable business in fence and retaining wall contracting. Takes you through layout and design, construction techniques for wood, masonry, and chain link fences, gates and entries, including finishing and electrical details. How to build retaining and rock walls. How to get your business off to the right start, keep the books, and estimate accurately.

A Portfolio of Fence and Gate Ideas By Cy Decosse

This book has some interesting ideas! Model a fence from this book and you will be the talk of the neighborhood!

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Engineered I Joist Advantages

engineered lumber i-joists

I remember the first time I saw engineered I joists used in a job here in Cincinnati. I would be willing to bet $500 that it was in the late 1970's. They were the floor joist components of a mini-condominium project. One of the condo units was half finished and the owner had abandoned the project. I was considering purchasing the condo to finish it out for resale. I didn't buy the condo - the reason had nothing to do with the floor joists although I must admit I had my reservations about the seemingly undersized structural material!

Think Steel

The next time you pass buy a commercial building under construction or you can view a traditional I beam up close, I want you to really look at the way one of those is made. Look at how thin the steel web or center portion of the beam actually is. Often they are just slightly thicker than 1/4 inch! I then want you to imagine how much weight one of these single beams can carry. Note that the beams don't have to be 1.5 inches thick - the thickness of a standard floor joist - to do the job.

It should come as no surprise that wood I beams can copy the same format as steel I beams and do so with predictable, consistent strength results. This is exactly how engineered wood I joists were born.

Different Depths

The stiffness or load bearing capacity of a beam (steel or wood) is a function of the distance the beam spans, the type of material it is made from, and the depth or height of the beam. You can demonstrate this very easily.

Imagine framing a floor using 2x4's as floor joists. If you made those span a typical 13 foot space, I don't know if I would walk across the floor. If it didn't collapse under my weight, it would most certainly sag! Now, substitute 2x12 joists in the same system. You and I both know that the floor system will be as strong as can be and 30 people standing on the floor probably would make little difference. The strength of the floor system increased at a faster rate than the depth of the joist material. In other words, the difference in depth of the joists increased by about 3.5 times, but the strength of the system increased possibly by a factor of 20 or more. All of this simply because we increased the depth of the joist or beam!

The new engineered floor joists can be purchased in a variety of depths that range from 10 inches to 16 inches. Each depth can be purchased with different top and bottom flanges as well. All of these things factor into the allowable distances you can span with each type of joist.

If you want a stiff floor, you simply go with a deeper floor joist or shorten the span of the floor joist. All of these considerations should be done by a structural engineer who designs floor systems. Don't even think about trying to guess what size you need!

Programs Also

The engineers who design I joist floor systems use very sophisticated computer programs that were developed by the floor joist manufacturers. The engineers simply have to enter in certain data about the size of the house and the anticipated floor loads and BINGO! out comes the recommended floor joist size. Don't even bother about asking to get this software. It is only available to engineers and lumber company professionals who are trained how to use it. Floor design is NOT a DIY project.

I-Joist Advantages

The APA PRI-400 standard makes engineered wood I joists easy to specify and order.

I joists install much in the same manner as traditional wood floor joists. There are several things you must do to insure a fault free installation, however this can usually be learned in several hours. No single detail is very complicated. All of these details are illustrated exceptionally well in a FREE booklet that is offered by the APA. Visit the Engineered Wood Association's web site at www.apawood.org and check under publications for information that can be downloaded.

I joists are available in deeper depths than standard floor joists. The largest standard floor joist is a 2x12. You can order I joists in depths up to 16 inches! This allows you to span greater distances which normally translates to wide open spaces.

I joists are also more consistent in size and shape than traditional floor joists. Some new flooring materials (laminate flooring) can't be installed over traditional floor joists that have different height crowns. You don't have this problem with I joists! They are true and straight all of the time.

I joist span design standards make them a stiffer floor. This can help reduce squeaks. It also makes a more solid floor. I joists are superb. Give them a serious look!

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Approved Engineered I Joist Manufacturers

engineered lumber i-joists

Approved Engineered I Joist Manufacturers

On July 4, 1997, the Engineered Wood Association announced its revolutionary Performance Standard PRI-400. Prior to this program, each engineered I joist had it own set of rules with respect to loads, installation, drilling, etc. It was enough to drive the average carpenter and builder bananas.

Now builders, carpenters, homeowners, and building inspectors have a uniform set of standards, rules and guidelines to follow when specifying, ordering, and installing the I joist products. This is a major step forward for the industry as now the product becomes much more user friendly.

The following is a list of the manufacturers of engineered I joists who make joists that meet the PRI-400 guidelines. I urge you to contact each one and get some information. You will not be disappointed.

  • Georgia Pacific Corp.
    133 Peachtree Street NE
    Atlanta, Georgia 30303
    800-839-2588 (Eastern States)
    800-830-7370 (Western States)
  • International Beams Inc.
    418 St-Dizier Street
    Montreal, Quebec
    Canada H2Y 3P8
    866-457-4043
  • Standard Structures Inc.
    P.O. Box K
    Santa Rosa, CA 95402
    707-836-8100
  • Anthony-Domtar Inc.
    309 North Washington

    El Dorado, AR 71730
    870-862-3414

A FREE Super Booklet

How would you like a FREE 35 page color booklet on everything you ever wanted to know about engineered I joists? It is yours for the asking. All you have to do is contact the Engineered Wood Association. Here is what you ask for:

  • Design / Construction Guide
    I - Joists for Residential Floors

Contact them at:

  • [email protected]
  • Publication Order Desk
    Engineered Wood Association
    7011 S. 19th St.
    Tacoma, WA 98411-0700
    253-620-7407

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Installing Engineered I Joists

I joists are somewhat tender. In other words, they derive an enormous amount of their design strength from the top and bottom flanges. For this reason, you must never cut, drill or notch a top or bottom flange. The only time you can cut a flange is when you are cutting the I joist for length.

Storage and Handling

When you receive the I joist shipment, look immediately for the written APA installation guidelines. Read these and make sure the lead carpenter has a copy at the jobsite at all times.

Don't store I joists on their sides. Keep them standing upright and in their original bundles until such time as you need to use them.

Make sure the joists are not in contact with wet ground or soil. Unload them onto pallets or 4x4's well up off the ground.

Keep the I joists as dry as possible. Cover with plastic, but do not allow the plastic to make a tent that traps water vapor from the soil!

Do not handle or carry the I joists flat, This is their weakest orientation. It is very possible for you to crack one if carried in this fashion.

Absolutely NEVER use a damaged or field repaired I joist. Cut out the damaged section and use the remaining pieces for small joist locations.

Exterior Applications

You can't use I joists where they will be permanently exposed to the weather such as a cantilevered deck or where they will achieve a moisture content greater than 16 percent. In other words, don't use them near swimming pools or large hot tub areas. These environments pump massive quantities of water vapor into the air around the joists.

Bearing Points

I joists need a minimum of 1 and 3/4 inches of bearing at each end. Multiple span joists - those that stretch through a house must have an intermediate bearing point of no less than 3 and 1/2 inches.

Prevent End Joist Rollover

Where joists rest on a foundation wall and terminate, they must be blocked to prevent them from falling over. Traditional floor joists are simply nailed into the band board. You can't do this with I joists! You solve the problem by installing a special APA Rim Board or I joist blocking panels in between each joist.

Cutting Holes in the Webs

ALWAYS refer to the Hole Cutting Guide in the enclosed installation instructions!

Always attempt to center the holes that are cut into I joists. This will balance the forces within the joist.

Believe it or not, the maximum sized hole you can cut into an I joist web shall be equal to the clear distance between the top and bottom flange minus 1/4 inch. This hole must be centered so that 1/8 inch of web material remains between the hole and the top and bottom flange.

The factory pre-punched knockouts are not considered a hole. You don't have to figure these things into hole spacing calculations.

Holes must be neat and circular. Use a compass, bucket, paint can, pipe fitting or other perfectly round object as your layout guide. Cuts must be nice and neat.

Only cut as large a hole as you need. Never overcut a hole!

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Plywood and OSB Literature

Plywood and OSB Literature

Many of the sources from the Engineered Wood Association (http://www.apawood.org/) are available to the general public at no charge, because they want all of us to become aware of the correct way to use their products.

Unfortunately, product failures and disappointments happen because a product was not used the way it was supposed to be used. A previous owner may have made the mistake, not you. The net result is that you become disenchanted. If you take the time to get educated, then you get maximum benefit from the products.

Take plywood for example. For the most part, it all looks the same. Nothing could be further from the truth! You must use the right plywood for the right job or you can have all sorts of problems. Plywood made according to the Engineered Wood Association Guidelines carries a stamp or label that tells you how to use it. You just need to know how to interpret the coding.

I urge you to visit the web site of the Engineered Wood Association. Click on their Publications Store to get a list of all free publications.

Related Articles:

Plywood and OSB

OSB Quality

Build with Wet OSB

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