All solar radiation - all gravitational interaction - all orbital forces interact with the earth along the plane of the ecliptic. From that perspective - this is what the earth looks like (see below)
Is constant at 3949.92 miles.
Varies at the rate of one part in 298.25 (The surface gradient of the outside crust.).
T Varies per specific input. 7, 37, 87, & 155.
t Varies correspondingly according to the Formula:
(13.29 – (0.147667 x ((angle from horizon, i.e.., ecliptic)))
Typical forces = 2.38305E21 pounds on each hemisphere above and below the ecliptic
Typical bending moments = 5.37277E27 ft lbs (and will cycle tension (+) to compression (-) four times daily/ /