|Volume 16 Issue 1
Welcome to Dave's Shop Talk's Home Improvement Newsletter of questions from our members on their construction projects, a Tip of the Month and a home remodeling article, both from our website at http://daveosborne.com.
Safety Tip: Maintain your power tools with care. Keep your power tools sharp, clean and lubricated. Wear safety glasses and dust masks. Use the power tool only when you are fit to operate a power tool, while not impaired.
Safety Tip: Keep your work area clean. Especially on table mounted power tools such as table saws, band saws, routers, etc. Clutter under foot is inviting an accident, a slight trip and a finger or hand can be cut or removed.
I start, as usual, with the total rise divided into the number of rises.
133.5 / 7.63 = 17.49 rises. We can't have an uneven number of rises, so choose 17 rises. 133.5 / 17 = 7.85" rises. You can go with 18 rises and a lower rise of 7.41"
With 17 rises we have 16 steps or runs. You want a landing at about 36" from the bottom floor, so go with 5 rises = 39.25". Make this the height of the landing - 5 rises or 4 steps, the 5th step is the landing itself.
The landing should be the same length as the width, ie. square. The landing height is 5 rises to the top of its sub-floor, just like the steps and the upper and lower floors. Usually, the run for a rise of 7.85 is 10.5 or 11, depending how much room you have for the total run.
Hope this helps,
Our software for the Stair Calculator draws them, based on what you input into our calculator. See http://daveosborne.com/dave/articles/stair-calculator.php
Follow the instructions on the page. If you have a problem or question, don't hesitate to email me.
I'm sending the printout from our Stair Calculator, as requested. Since the rise is less than the minimum 5", we had to force the calculator to give us the numbers, regardless.
Please find attached your drawings for the rise and run requested.
Hope this helps,
Stair Measurements from Dave's Easy Stair Calculator at DaveOsborne.com
Total Rise entered: 58.5 inches
Floor Thickness: not entered
Number of rises: 18 rises
Number of runs: 17 runs
Height of each rise: 3 1/4 inches
Length of each run: 11 1/4 inches
Total Run: 191 3/32 inches (15'-11 3/32")
Length of board needed for the stringer: 18 feet
Length of opening in upper floor: needs Floor Thickness
Tape measurements (in inches) for the stringer (see diagram):
10 13/16 22 1/2 34 3/16 45 29/32 57 19/32 69 5/16 81 92 11/16
104 13/32 116 3/32 127 13/16 139 1/2 151 3/16 162 29/32 174 19/32
186 5/16 198
I include these drawings to give you, our Newsletter reader, an idea of what is available through the use of our website Stair Calculator.
(taken from our website: DaveOsborne.com)
According to the building code, you are allowed only 3 layers of shingles on a roof. Asphalt shingles are heavy, starting at 210 pounds per square (100 square feet) for the old butt shingles, to 250 pounds, and more, per square for the laminated shingles. This is the reason there is a limit on the number of layers, allowed on a roof.
Now, the shingle manufacturers are saying they won't warranty their shingles unless they are on a roof deck with a layer of 15 pound roofing felt under them. Most of the re-roofing jobs you see done now always remove the first layer of shingles. The new shingles coming out today are warranted longer than the 10 or 15 years in the past. We can get fiberglass based laminated shingles lasting 40 years. Getting warranties like this tells us to do the job that the manufacturers want, that is start right back down at the roof deck. I've done it both ways, roofing over existing shingles and tearing off the old and starting back at the sheathing over the rafters or trusses. The tear off is not that big a deal, but does a much better job. Get yourself a tool like a garden spade with a built up back and dive into it. Start by removing the ridge caps and go down the roof, opposite to the way the shingles were laid. If these roofs are going to last 30 or 40 years, most of us won't have to worry about re-doing it, anyway. So let's do it right the first time.
The advantages of tearing off the old shingles is being able to see the roof deck; re-nail it; replace boards if needed; replace old flashings, plumbing jacks and roof vents. The job is going to be expensive, so we may as well do it right. The only added expense, really, is the labor and cost of getting rid of the old shingles, a small proportion of the total. The only thing I would be leery of disturbing is the flashing on the chimney that goes over the roof flashing. If this stuff is rotten, of course replace it, but it is embedded, or should be, in the mortar originally by the bricklayer building the chimney. The roofer then does his part later. Installing flashing around a chimney, skylight or dormer is not too complicated if you follow procedures. As you go up the roof with your shingles, go around the chimney or dormer, as well. The front apron is easy since it goes over the top of the shingles below the chimney or dormer. Ask for a front apron which has the edge rolled over on itself to keep it stiff on the exposed edge. On the sides of the chimney or dormer we use step flashing, every row of shingles has a step flashing. Half goes under the next row of shingles, above it, and the bottom half goes over the shingle, below it. When coming to the back of the chimney or dormer, we install a back pan which is about 12" wide at the back.
Now the tricky part: The front... Read more at Roof 5: Re-Roofing a Roof.
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Hi, I'm Dave Osborne. With over 50 years experience as a journeyman carpenter, foreman and contractor in heavy construction I enjoyed working with apprentices and sharing the tricks of the trade that others shared with me. Now I get emails from Members all over the world and we include many of my answers in our Free Monthly Newsletters. Some of my answers include drawings and instructions specific to a project, but may also answer your questions. I use correct construction terminology, so you can confidently inform your building supply dealers or contractors exactly what you need.
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