Whenever possible, a row of metal coils with eyes vertical requires one direct tiedown to secure against rearward movement at what maximum angle?

At least one direct tiedown against the front of the row of coils, restraining against forward motion, and if practicable, making an angle 45 degrees or less with the floor.
At least one direct tiedown against the rear of the row of coils, restraining against rearward motion, and if practicable, making an angle 45 degrees or less with the floor.