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Do I need to pre drill for concrete screws?

Do I need to drill a pilot hole for concrete screws? It is necessary to make a pilot hole for concrete screws. You should allow for a little extra depth to your drill hole to ensure that when the concrete screws are cutting threads there is enough room for any dust that might accumulate.

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Do I need to dig before laying gravel?
Do I need to dig before laying gravel?

If you're building a driveway, you might be wondering “Can I pour gravel on top of grass for a driveway?” The answer is no. You need to dig it up....

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To put screws in concrete you need special screws, a drill and the right technique. Concrete screws are the only kind of screws that are strong enough to penetrate concrete. They come in different lengths, and it's important to have several sizes on hand. Concrete is a dense material, so you'll need a screw that can penetrate 1 inch (2.5 centimeters) into the concrete; then add an additional inch (2.5 centimeters) more than the thickness of the material you are attaching to the concrete, so that the screw is embedded strongly enough. Knowing how to drill the hole is important when you use concrete screws. You have to allow for a little extra depth to your drill hole, because dust accumulates inside. A hammer drill is good for this purpose because you can adjust the depth of the hole so it won't be too shallow or too deep. There are two kinds of screw heads for work with concrete -- hex head or flat head Phillips. Hex screws are easier to drive in, but they don't look as nice because the caps are raised and they can't be flush to the surface; so your choice depends on the location of the screw. Align the screw and then use constant low-to-medium pressure on the drill when driving in the screw. Never drive the screw in at high speed, which can damage the threads and cause the screw head to break. Sometimes you can run into problems when putting screws in concrete. If you're having trouble driving the screw in, the hole might not be deep enough or there might be too much dirt inside. If the screw spins with no grip and doesn't tighten, you may have to put a plastic anchor in the hole and drive the screw directly into the anchor.

Originally Published: May 17, 2011

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Does gravel wash away with rain?

When it rains really hard, the gravel alongside the road washes away and becomes a real danger for tires and probably the road itself. After googling (ducking, actually) the best way to avoid gravel washing away, it seems a French drain is the best method to do this. Only part of the lengthy gravel area is affected.

My problem is that we have a long area of gravel used for parking for myself and several neighbors. When it rains really hard, the gravel alongside the road washes away and becomes a real danger for tires and probably the road itself. After googling (ducking, actually) the best way to avoid gravel washing away, it seems a French drain is the best method to do this. Only part of the lengthy gravel area is affected. I'm wondering if I can just install a partial French drain for the affected area and leave the unaffected as is or if the lower French drain would cause the upper area to become affected. I don't have to dig to install the French drain on the affected area because I can just fish the gravel out and lay the perforated pipe in so I could do this in a day. However, if I have to do the upper part it will take considerably more time and effort to call 811, dig through at least a foot of gravel and lay it throughout the graveled area. Also, I have been just going to our local rock quarry and getting crusher run 47 by the 5 gallon bucket which typically only costs about $6 when I get 5, but I have to make multiple trips. This happens at least 3-5 times a year.

Thanks!

There is a low spot, probaby 8-10 inches right under the red car and about 5 feet behind the red car. The area by the back car that has the lip of the road is barely affected. I've only ever put gravel there once.

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