0
Three-point contact refers to moving on a surface and to how many of your limbs are reliably attached to a surface feature. For example, both hands on a rail and a foot on the step, or both feet on step(s) and a hand on the stairrail. Etc. In this case, three-point contact for stairs means holding both stairrails one with each hand and using one foot when stepping up/down the stairs. From a design point of view, the stair designer must design a handrail which is graspable (1-5/8" dia.) and a stair which is walkable preferably 7" riser and 11" tread. This will make three-point-control possible and achievable.
Still curious? Ask our experts.
Chat with our AI personalities
Rafa
Beau
FranAdd your answer:
Earn +20 pts
What is a sentence using the word trisect?
One example of a sentence using the word "trisect" is: "In geometry, to trisect an angle means to divide it into three equal parts." The term "trisect" specifically refers to dividing something into three equal parts or segments, commonly used in mathematics and geometry.
How do you plot a traverse using AutoCAD 2009?
These techniques apply to basic CAD programs such as AutoCAD, IntelliCAD, etc. If you have a civil/survey program or add-on, such as Land Desktop, SurvCADD, Eagle Point, etc., then there are built-in tools for entering lines and curves.
What is the correct way to roof a house using three in one shingles?
Keeping a solid roofing layer of shingles is an important way to avoid water damage and effects of rain, snow and hail while providing an attractive crown for the house.
How do you find center of a circle given 3 points on the circle?
You have points A, B, and C. Using a compass and straight edge, find a perpendicular bisector of AB (that is, a line that is perpendicular to AB and intersects AB at the midpoint of AB. Next, find a perpendicular bisector of BC. The two lines you found will meet at the center of the circle.
What is a true bearing?
A true bearing is a type of bearing that indicates the direction of one point relative to another point on the Earth's surface, measured using true north as a reference point. It is expressed as an angle, measured in degrees, between a fixed reference direction (such as true north) and the direction of the point being observed. True bearings are important for navigation, surveying, and other applications that require accurate direction-finding. They differ from magnetic bearings, which are measured relative to the Earth's magnetic field, and are subject to variation depending on the location and time. True bearings are more reliable and consistent, as they are based on the Earth's axis of rotation and do not change over time or location.
