Concrete Cutting: The Unknown Niche by Robert Short / Affordable Concrete Cutting

Concrete Cutting: The Unknown Niche by Robert Short / Affordable Concrete Cutting

What is Concrete Cutting?
Concrete cutting is a process of controlled sawing, drilling and removal of concrete performed by skilled operators using special saws that use diamond impregnated blades. Unlike the old- fashioned dusty "jack hammer" method, modern concrete cutting leaves a smooth attractive finish and utilizes water so as not to create any dust or mess. There are many different kinds of concrete cutting but the most common are wall sawing, core drilling and slab or flat sawing.

Wall Sawing is the process of cutting openings such as doors or windows in concrete walls, usually no more than 12" thick but in some cases up to 24" thick. This is accomplished by using a saw that attaches to a track on the wall to be cut. This process utilizes an enormous 30" or even larger diameter diamond blade that can cut 12" or more of concrete all of the way through from one side. This aspect of our business requires the most skill and cannot easily be done by your average "do it yourselfer." As stated, wall sawing may entail cutting openings in concrete foundations but may also include lowering a foundation elevation, entire foundation removal and also the cutting of concrete retaining walls in part or in whole. This type of concrete cutting requires skill and experience to cut perfectly smooth plumb and level openings with virtually no dust or mess, so it is a rather expensive service. Most concrete cutting companies charge a minimum of $425 just to take their equipment to a site and cut.

Homeowners that build additions on to their home that have basements or cellars commonly find they need to cut into their existing concrete foundation to add an entry or passage between the new and existing basements. It is much easier and in most cases less expensive to have this service performed during the construction process and not after.

Core Drilling is the process of drilling perfectly round holes through concrete walls and floors. The diameters of the holes range from 1" to 12" round but average 5" for most homeowner applications. In commercial applications core holes can range anywhere up to 60" round and more. Core holes are used for "utility penetrations" such as electrical, plumbing and heating but are also commonly used for venting furnaces or clothes dryers. Although not recommended, core drilling can be performed by an advanced "do it yourselfer" and the equipment necessary to perform core drilling is readily available at your local tool rental and supply store. Most companies have a minimum charge of $250 to core a hole for you and it can take a professional as little as 10 minutes to unload his equipment, core the hole, and reload his equipment. Yet, I have seen homeowners rent the equipment and spend an entire weekend trying to core a single hole and then call a professional to complete the project. Just like with any trade a professional concrete cutter will make his job look easy.

Slab sawing, also known as flat sawing, is used to cut horizontal flat concrete surfaces such as floors, bridge decks and pavement. Slab saws feature a diamond blade that is mounted on a walk-behind machine that requires only one operator. They can cut up to 33 inches in depth but generally only 6" or less is necessary in most homeowner applications. Slab sawing is the perfect solution for making penetrations or openings in concrete floors to access and repair a broken water pipe or sewer line. When a basement or cellar is being remodeled to add a bathroom the concrete is removed to add new plumbing for the fixtures. A slab saw is also useful in demolition work to break up and remove a cracked or unwanted patio, driveway or walkway. Sometimes a homeowner might want just part of a patio or other concrete slab cut in order to alter their landscaping. Attempting a slab saw project can be very time consuming for your average "do it yourselfer" however it can be accomplished. I always recommend spending a few extra bucks and saving yourself some very serious danger and aggravation by contracting a concrete cutting professional.

No matter what your project is, don't let a little concrete stand in your way. Concrete can be a homeowner's worst obstacle if he or she doesn't know that there are companies out there that specialize in removing it very quickly and neatly. To find a reputable concrete cutter I recommend that you start with the yellow pages and always check them out with your local Better Business Bureau or your local Department of Consumer Protection. To get more acquainted with the industry just do a search for "concrete cutting" and check out a few websites dedicated to the subject. Of course, be sure to visit our web site at www.affordableconcretecutting.com.

Copyright 2005 Affordable Concrete Cutting Inc. All Rights Reserved

About the Author
Affordable Concrete Cutting services the contractor and homeowner in and around Boston and Eastern Massachusetts. We specialize in cutting doorways in concrete foundations.Visit our website at www.affordableconcretecutting.com

How to Choose a Freezer for your Home by Donald Grummett

How to Choose a Freezer for your Home by Donald Grummett

March 1, 2005

The average household freezer is a silent slave. It operates
year in and year out, requiring nothing other than a
constant supply of electricity. Eventually, though it may
need to be replaced.

The following are a few considerations that will allow you
to make an informed decision about its purchase.

Most consumers have only a few concerns (other than price)
when purchasing a freezer:

1What size do I require? 2How much electricity will
it consume? 3What (if any)options do I need?

Size --------------------------------------

Size of course depends upon your needs. Generally though,
most people purchase too large a freezer. They base their
judgement upon perceived usages rather than real usage.
Their reasoning is: We might need a larger one in case
there may be a special at the grocery store on something.
The reality though is that most freezers end up being
operated only half full.

Also, remember that all frozen foods should be consumed
within six weeks. Foods stored longer than that can become
dehydrated no matter how well wrapped. As the moisture
leaves the food both taste and nutritional value will be
lowered. So anything stored longer than six weeks will
probably end up being thrown out. As an example, how much
ice cream have you thrown away because ice crystals started
to form inside the package? That ice forming inside the
package is dehydration at work.

Therefore, when trying to decide how big a freezer to
purchase we suggest using what we call the six week rule.

To use this rule you first approximate how much frozen
food your family consumes in a six-week period. Then
envision how much space those items would require if stacked
on your kitchen counter. That will give you an idea of the
physical size of freezer you require.

Lastly, dont forget that the chest style freezer will
require twice the floor space of an upright. This may be an
important factor if you live in an apartment.

Electricity consumed --------------

Although freezers are efficient consumers of electricity
they will definitely increase your electrical bill.

An upright freezer consumes more electricity. This is
because every time it is opened the cold air spills out onto
the floor. Consequently, it runs more frequently. Also
todays uprights are often frost free, which by their nature
consume much more electricity. So we have to pay for the
advantage of not having to defrost it.

Chest freezers are more efficient consumers of electricity
because the cold air lies inside even though the lid is
lifted to access the contents. But, chest types are manual
and will need to be shut down and defrosted once a year.

Are there ways to lower the electrical consumption of our
freezers? Perhaps.

To lower electrical consumption some people only use their
freezer seasonally. During summer and fall, when freshly
grow food is available, they clean out the freezer and turn
it off. It is started back up again for winter and spring
usage. This practise is common with gardeners who primarily
want to store their fall vegetables. Seniors also do this
because getting out in the winter is more difficult.
Therefore they use a freezer to reduce the number of trips
to the grocery store.

Some people are now suggesting a practice called freezer
blocking to lower consumption. This entails filling any
unused space in the freezer with blankets or boxes of
insulation. The theory is that only the food area would be
cooled because air circulation is being blocked off from
unused sections. The smaller the space being cooled, the
less the freezer should operate.

Others suggest filling unused space with containers of
water. They would become frozen and act as a thermal media
that in theory would lower the run time of the freezer. The
jury is still out on these ideas. To me seems like an over
reaction by people who bought too large a freezer in the
first place.

Options required --------------------

Since most freezers are relegated to the basement they are
not an appliance that needs to look pretty. Neither do most
consumers feel a necessity for them to have many options.
Most are simply regarded as large storage boxes where frozen
foods are kept for later usage.

Recently though manufacturers they have been offering a few
more options. Things such as frost free, built in alarms,
digital temperature displays, push button controls, and
quick freeze are now on the market. All options on a freezer
can serve a purpose but must be offset with the possibility
of increased complexity. The more complex a device the more
possibility of it breaking down. Plus, along with complexity
usually comes increased cost.

One of the more unusual things you will see comes from Haier
America. It is a chest style freezer with a pull out drawer
at the bottom. The upper half is a basic chest freezer for
long term storage. The lower half allows quick access via a
drawer that slides out. The idea is that the drawer section
is for items that need to be frozenbut will be used
within a few days.

Summing Up -------------------------

Food preferences have changed significantly in the last
decade. We are eating less beef and more poultry and
vegetables. Consequently, consumers now store less than 50
pounds of beef at any time.

Twenty years ago freezers sold would average fifteen to
twenty cubic feet. Today the most popular size for a freezer
is seven to twelve cubic feet. Again a reflection upon the
fact that more people are consuming fresh foods rather than
frozen.

Household freezers come in either a chest style or an
upright style.

If you are looking for convenience, then the upright
freezer is for you. Obviously, its design allows you to get
to the food easily. Simply reaching into an upright requires
less flexibility than leaning into a chest freezer.

Chest freezers tend to be more efficient to operate and
consume less electricity.

Chest freezers are usually manual and will need to be
defrosted once per year. Many upright freezers though are
self-defrosting.

If you expect to use the freezer for long-term storage a
chest is better because they operate at a lower temperature
than an upright.

So it is time to finally make that choice of what to buy.
Hopefully, some of the ideas above will help you make an
informed decision. Remember to take a close look at the
Energuide before purchasing. It offers a lot of information
to help with an informed decision. But more on the Energuide
in future issues.


About the Author
Copyright 2005 by Donald Grummett. All rights reserved. In the trade over 30 years as a technician, business owner, and technical trainer. For more information about appliances
including Frequently Asked Questions, Stain guide, Recycling, and monthly Newsletter visit his website at http://www.mgservices.ca