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2. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   Grade is usually expressed as a percentage - converted to the angle α by taking the inverse tangent of the standard mathematical slope, which is rise / run or the grade / 100. If one looks at red numbers on the chart specifying grade, one can see the quirkiness of using the grade to specify slope; the numbers go from 0 for flat, to 100% at 45 ...

3. Dog-leg (stairs) - Wikipedia

   en.wikipedia.org/wiki/Dog-leg_(stairs)

   A dog-leg staircase A quarter-landing, on a dog-leg staircase, is made into an architectural feature, by the use of arches, vaulting and stained glass. A dog-leg is a configuration of stairs between two floors of a building, often a domestic building, in which a flight of stairs ascends to a quarter-landing before turning at a right angle and continuing upwards. [1]

4. Stairs - Wikipedia

   en.wikipedia.org/wiki/Stairs

   The longest stone stairs in Japan are the 3,333-step stairs of the Shakain temple in Yatsushiro, Kumamoto. [52] The second ones, Mount Haguro stone stairs, have 2,446 steps in Tsuruoka, Yamagata. The CN Tower's staircase reaches the main deck level after 1,776 steps and the Sky Pod above after 2,579 steps; it is the tallest metal staircase on ...

5. Architectural drawing - Wikipedia

   en.wikipedia.org/wiki/Architectural_drawing

   An architectural drawing or architect's drawing is a technical drawing of a building (or building project) that falls within the definition of architecture.Architectural drawings are used by architects and others for a number of purposes: to develop a design idea into a coherent proposal, to communicate ideas and concepts, to convince clients of the merits of a design, to assist a building ...

6. Stair nosing - Wikipedia

   en.wikipedia.org/wiki/Stair_nosing

   The regulation contains a detailed set of rules that must be followed when installing new steps in settings like municipal buildings, industrial plants, schools, etc. Perhaps the most recognizable standard in California's Title 24 building code is the need for a slip-resistant tread or nosing that is of contrasting color from the steps.

7. Jacob's Ladder (Saint Helena) - Wikipedia

   en.wikipedia.org/wiki/Jacob's_Ladder_(Saint_Helena)

   The staircase has been declared a Grade I listed structure. [4] During the island's annual "Festival of Running", a timed run takes place up Jacob's Ladder, with people coming from around the world to take part. As of 2016, the record time to ascend the stairs is 5 minutes, 16.78 seconds. [1]