For example a 6 inch fiberglass diameter column can support 8 000 pounds whereas a 12 inch diameter column can support up to 18 000 pounds.
Porch roof needs support columns.
For example thick columns in a masonry base are often used on a craftsman porch while a victorian porch may include tightly spaced thin and embellished posts.
These materials may perform an important decorative function in many landscaping designs.
However if the spacing is too wide the patio cover s beams will bow under the weight of the joists and roof covering materials.
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The larger the roof is the more support that you are going to need.
For larger porches such as wrap around porches you will want to make sure that the support is more than you need.
Different column materials have different load bearing capacities.
In other words the maximum distance it can cover without support from posts.
Substantial posts are generally considered more pleasing to the eye than spindly ones.
The size and shaping of your posts and columns should complement the architectural style of your house.
You can repeat the same process using a different breadth if you want a beam that is wider or thinner than 6 inches.
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Porch columns are rated to support specific weights i e your roof.
The columns support not only the roof but if you live in cold climates it also has to support loads of snow.
The determining factor of post spacing is the allowable span of your beams.
Screw the brace into the beam with 3 inch screws driving them into the side of the board at an angle.
Minimum sizes of posts and beams are set by engineering requirements and are strictly governed by local building codes.
This tells you the size of the beam needed to support the porch s roof.
It s a good bet that if you are using the identical columns to those already on your porch your replacement column should be satisfactory.
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Repeat for each brace until they re all in place.
In the example d calculates to 7 75.
When selecting a porch column ensure that it can carry the weight of your roof.
The main structural members of patio and deck overheads are posts or columns and beams which run from post to post or from post to ledger.
Determine how much support is needed.
Make sure they re tight.
This means the example porch would need a 6 inch by 8 inch beam.
Tuck the angled side of the brace under the eaves with the cut part pressing vertically against the support beam that meets the columns.
The beams support the roof rafters or joists which in turn hold the roofing material.