When they poured my garage slab in my last house i asked em to slope it a lot.
My garage floor slope is too much car hits.
Depending on how smooth your garage floor is and wheel diameter and ramp slope it might stay in place fine with just some foam rubber weatherstripping on the bottom note with time this can stick to and peel garage floor paint or other finishes or might have to be bolted down into the concrete slab so it does not get shoved across the floor as the car starts onto it.
One solution is to.
The floor is sloped to allow fluids to drain and that s not a bad idea should you or the next occupant want to park a car there again.
Structurally it s not feasible to raise the roof of your garage but if you ve got no alternative then you could lower the floor.
An un even floor in your garage it is very common.
In the case of your garage floor i would treat it very aggressively because a smooth concrete surface that has slush and water on it is almost as slippery as a surface can get.
If the floor is hand screeded and isn t re leveled during the finishing process you may get a few minor birdbaths with the 1 8 ft slope but nothing a quick squeegie won t fix.
So during the winter melted snow and rain would puddle there and freeze.
In most cases its due to foundation movement tree root seasonal wether patterns and can be a little as a 1 8 inch difference on either side of the bottom garage door.
Actually a very slight slope like 1 16 will get rid of the water with a little help from a squeegie.
But they got one low spot right where i got out of my car.
Your body is meant to traverse rough ground all over the earth and lift objects on various types of uneven ground.
Your figure of 1 4 per foot doesn t sound bad.
You would then find a gap where the garage door ends but hey.
With some exercises the slope doesn t matter much.
Actually any slope at all would be fine but to account for variations in screeding and floating and such you need a definitive slope designed in to avoid puddling due to uneven concrete surface profile.
Should be about 1 8 foot slope from sides toward center and from back to front which will drain to the center and then to the door.
The connection between the garage floor and the apron is subject to pressure from fluctuations in temperature and the weight of vehicles at the stress point.
The apron is usually constructed with more thickness than the main part of the driveway to add resistance to pressure and reinforced with welded wire mesh.