DIY Life

By M.E. Williams

Every summer, I look forward to cooking outdoors. Lots of people have propane grills, which make outdoor cooking fast and convenient, but I use a small charcoal model similar to a Weber Kettle Grill. I don't think I'd move up to a propane grill, partly because the food cooked on it can have a "gassy" off-flavor (also possible with charcoal, if you use too much starter). On the other hand, I'd love to have a backyard large enough for a barbeque pit, like the one I remember my late grandparents having.

The Arizona BBQ Association has assembled a page of links that will show you how to build your own backyard smokers and grills. The projects are of two basic types: those based on masonry and those based on metal barrels, which usually require welding. The BBQ Lodge pit project is probably the simplest, but still, the designer had to cut some concrete blocks to shape.

None of these is exactly an "easy" project, but if you get started now, you'll have something to show off on Labor Day Weekend... and some really great meals for the rest of the season!

Basements can be a real source of grief for the homeowner. Holes and cracks in the basement walls and floors allow water and even ultra-nasty sewage to seep into the basement. This can subject the home to major health risks from debilitating mold, not to mention the offensive nose-bombs.

You can't let this situation go on -- it'll just get worse and worse, and compromise the integrity of your home's foundation. So, what's the first step to getting a grip on this situation? To nip this situation in the bud, and prior to even thinking about waterproofing, you need to thoroughly understand what causes cracks in the basement floor.

This is Part IV of the five part series (getting close to the end!) of a backyard transformation at the home belonging to my son and his wife. You may see the first three parts, here, here, and here. They covered the initial stages of design layout, prep, and paver installation.

Because the paver work was the biggest part of the project, we want to back up just a bit and look at the detail involved in the installation. It'll be helpful, especially if this is your first experience in laying pavers. Check out the gallery for some good information and we'll get started.

Before I had children, my Dad got some pretty good Father's Day gifts. Home Depot gift certificates and cool tech toys were among his favorites. When our oldest was born, 5 years ago, we started giving framed pictures instead.

As our family has grown, the photos have become more abundant, and the frames cheaper. He loves having pictures of the grandchildren, but I wanted to come up with something a bit more creative this year.

With nearly every visit to my parents' place, Grandpa takes the children up to his garden to check on the plants. My boys love to notice how Grandpa's garden is growing, and to report on the changes since their last visit. My dad loves to garden, and sharing that with his grandkids has become a sort of ritual. This Father's Day, we decided to build on that and make him a stepping stone.

After the jump, I'll tell you how we made this garden stone, and offer some tips for making your own.

When you're planning a patio, carport, outside storage shed, or a standing porch cover, the first thing you need to consider is your concrete slab.

The challenge of pouring a concrete slab yourself is not too big -- with the proper planning. Because this is a DIY project, your concrete slab cost is bearable; the cost can just be added to your home equity. This article will provide instructions for building a form, pouring, and finishing a concrete slab.

When you're in the planning mode, you need to consider any plumbing and electrical conduit that will be incorporated in the slab. Failure to prepare for these concerns will mean the concrete slab will have to be trenched and patched.

Trenching and patching is a tedious and expensive process not to be reckoned with! The key is to make sure everything is properly planned and laid out before any wet concrete graces the work site. The trick, if you're dealing with anything sophisticated, is to use a well thought-out sketch, or a permit-approved blueprint if your municipality requires it.

Tools and Materials:

• Hammer
• Wooden stakes
• Mason's string
• 1" X 4" lumber for the concrete form
• 2" X 4" stud for the screed
• Shovel
• Steel wire mesh
• Side cutting pliers
• Steel tie wire
• 4' Level or laser
• Darby or bull float
• Magnesium float
• Steel trowel

Lay Out Your Slab's Location

The first thing to do is to decide on where the concrete slab will be located and what its size will be. Once you've got that nailed down, you'll need to drive stakes at the slab's corners, and connect the corners using string line. This represent 's your slab's boundary.

Be sure that your lines are square. Use the 3-4-5 method, then make any adjustments until you're spot on.

Prepare the Slab's Location

Pinch up the sod inside the area located within the string line. Next, level the dirt.

Now it's time to trench the footing. This is completely around the perimeter just inside the string line. Dig it one foot wide, and at least six inches deep. The purpose of the slab's footing is to strengthen and stabilize the slab.

Some municipalities require that a vapor barrier be placed on the dirt prior to pouring the slab. Inquire with the regional building code to determine whether this needs to be done.

The rationale for a vapor barrier is that moisture migrates up through the slab by capillary action and diffusion. This moisture is bad news for floor coverings and some folks claim it can be a health issue if mold develops.

Now, install steel mesh in the footing for small slabs, and rebar for larger slabs. Secure it together with pliers at the intersections with tie wire. This will strengthen the footing where the pressure is greatest. Again, consult your local building code for your particular situation.

Build Your Form

The concrete slab needs a wooden form to keep the concrete contained during its curing and finishing process. Use 1" X 4" or 1" X 6" boards for the form's sides. The string line serves as a guide and ensures your form is square and true.

You'll nail the form together. This is for stability; wet concrete exerts a lot of pressure! Drive stakes in every sixteen inches on the outside of the form, snug up against its sides. This will keep the sides of the slab straight.

It's critical to keep your slab level in all directions. Adjust the sides of the form to get this right. You can use a level for this but I really recommend a laser level. Then nail the stakes to the sides of the form securely.

Does Your Slab Need Control Joints?

Good question indeed! If it does, this is the time to put them in. (You can see them in driveways to see what I'm talking about.) Here's the rule of thumb: say you're pouring a slab for a patio. If it exceeds 10 feet in any given direction, then you should use control joints.

It's Time to Pour the Concrete into the Form

Home improvement stores and tool rental outlets will rent you a portable cement mixer. This is the best way to go for a small slab project; larger slabs justify scheduling delivery by a concrete company.

Position the cement mixer's outlet chute to pour the wet concrete into one end of the form. Begin the pouring. Use a shovel to push the concrete around and work it into all the nooks and crannies of the form.

Bear in mind that if you have to wade out in the concrete to work it, you really do need to wear your rubber boots. Concrete contains lye, and it's not too nice to your skin. Can you believe they used to put that stuff in soap? No wonder folks didn't bathe often.

Beginning the Concrete Finishing Process

After filling the form, level it with the edge of a 2" X 4". It should be long enough to overlap the form on both sides. Push and pull it in a sawing motion across the top of the form. Start at one end (your choice) and work it down to the opposite end. This process is called the "screed."

Apply the Darby

Now it's time to use the darby. I have absolutely no idea where this tool got its name, but you've got to admit, it sounds pretty cool! (Or is it just me?) The darby is a tool that smooths the surface of the concrete; it should be used on slabs small enough that you can reach everywhere by hand.

Larger projects such as a driveway, large patio, or a carport should be done with a bull float. The bull float is similar to the darby, and performs the same service, but it's outfitted with a pole so that you can work long-distance.

Whichever tool you use, use smooth, overlapping arcs. Push down while smoothing to remove lumps while filling any low spots. Take care not to work it too hard or the concrete will blister. Can you see where we're going with this? We're progressively fine-tuning the slab as it cures.

Next, wait until you see water beginning to appear on top of the slab. The time this takes to happen depends of factors such as humidity, etc. Next, you'll see that the water will reabsorb into the slab. Start testing the surface of the concrete. When your thumb, pressed into the surface of the concrete, leaves a quarter-of-an-inch deep impression, you'll know that it's time to edge and groove the concrete slab.

*Note -- If you put in control joints prior to pouring the slab, you don't need to use the groover. Groovy!

So why groove at all, if it just gets covered up? Well, the slab will be subjected all kinds of forces over its lifespan. The grooves provide the concrete slab with a vertical plane to crack, if it must. To be effective, the groove should be 1/4 of the slab's thickness in depth.

It's Time to Float and Trowel your Concrete Slab

How much pressure should you apply with the float? In this step is where concrete finishing becomes an art, like taping and floating drywall. It depends on the hardness of the concrete slab at this point. If you've never done this before, just start off with a light touch and get the feel of it -- it's all a matter of experience.

Next, it's time to begin to trowel the slab using your steel trowel. Think of this step as like floating, except that its objective is to take the concrete slab to more precise levels of smoothness. Further successive passes yield more precise results.

Some applications don't want or need any further smoothing of the surface. When would this be? Sidewalks fall in this category. If you're planning on laying ceramic tile on the slab using mortar, a super-slick surface isn't needed. Also, don't smooth too much any time a non-slip surface is called for. You can give it a broom finish at this point.

Trowel it the first time, and if a smoother surface is desired, let it dry out more, and then trowel it another time. Generally speaking, three passes will yield the best results. Beyond this, you won't notice any improvement.

Finally, let the concrete slab dry completely, and then remove the form and discard the lumber.