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2. Handrail - Wikipedia

   en.wikipedia.org/wiki/Handrail

   A maximum height of 28 inches (711 mm) measured to the top of the gripping surface from the ramp surface or stair nosing is recommended for handrails designed for children. Sufficient vertical clearance between upper and lower handrails, 9 inches (229 mm) minimum, should be provided to help prevent entrapment. [6]

3. Deck railing - Wikipedia

   en.wikipedia.org/wiki/Deck_railing

   The lower board is placed 3.5" from the top of the finish deck to the bottom of the board. The top board is placed with the top at 35" from the deck. Then the vertical 2x2 pressure treated wood balusters are installed spaced regularly every 3.5". Then a 2x6 is installed horizontally across the top of the posts and to 2x4.

4. Stairs - Wikipedia

   en.wikipedia.org/wiki/Stairs

   At the top of the stairs, the horizontal portion of the railing is called an "over easing". Core rail: Wood handrails often have a metal core to provide extra strength and stiffness, especially when the rail has to curve against the grain of the wood. The archaic term for the metal core is "core rail".

5. Macaulay brackets - Wikipedia

   en.wikipedia.org/wiki/Macaulay_brackets

   Macaulay's notation is commonly used in the static analysis of bending moments of a beam. This is useful because shear forces applied on a member render the shear and moment diagram discontinuous.

6. Inclined plane - Wikipedia

   en.wikipedia.org/wiki/Inclined_plane

   Wheelchair ramp, Hotel Montescot, Chartres, France Demonstration inclined plane used in education, Museo Galileo, Florence.. An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load.

7. Level staff - Wikipedia

   en.wikipedia.org/wiki/Level_staff

   The metric rod has major numbered graduations in meters and tenths of meters (e.g. 18 is 1.8 m - there is a tiny decimal point between the numbers). Between the major marks are either a pattern of squares and spaces in different colours or an E shape (or its mirror image) with horizontal components and spaces between of equal size.

8. Wheelchair ramp - Wikipedia

   en.wikipedia.org/wiki/Wheelchair_ramp

   A concrete wheelchair ramp A portable wheelchair ramp. A wheelchair ramp is an inclined plane installed in addition to or instead of stairs.Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height.

9. Topping out - Wikipedia

   en.wikipedia.org/wiki/Topping_out

   The tradition also served a functional purpose: a pine tree was used, and after the needles had fallen off the tree, the builders knew the wood frame below had cured/dried out so they could enclose the building. [4] Long an important component of timber frame building, [5] it migrated initially to England and Northern Europe, thence to the ...