30 feet
if u mean height wise about 1000 feet
That depends on how well supported the floor is and that depends on how far apart the joists are placed. The closer they are, the more weight can be supported.
Euclid's fifth postulate: If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough.It can be rewritten: If two lines are drawn which intersect a third at angles of 90 degrees, the two lines are parallel and will not intersect each other.It has also been rewritten as Playfair's axiom:In a plane, given a line and a point not on it, at most one line parallel to the given line can be drawn through the point.
A straight line segment can be drawn by joining any two points.A straight line segment can be extended indefinitely in a straight line.Given a straight line segment, a circle can be drawn using the segment as radius and one endpoint as center.All right angles are congruent.If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough.
1000 feet
10 ft in the states and 30 ft apart 3 ft in Canada and 9ft apart. I'm not 100% sure about the Canada one :/
One hundred miles apart
They are separated by 1,402 miles of highway.
a gentle slope
They go up and down latitude lines go sideways
100 yards from tryline to tryline.
The land is relatively flat.
They can be any distance apart
Contour lines that are far apart indicate a gentle slope. Because contour lines connect points with the same elevation, wide spacing indicates that the elevation is not changing drastically.
they have to be close together if they are far apart it means it is a flat area
They show a narrow area
It depends how far apart they are. It could be an infinite number.