1 attach one end of the string level to the wall of the garage furthest from the main door.
My garage floor slope is too much car hits.
When they poured my garage slab in my last house i asked em to slope it a lot.
One solution is to.
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.
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 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.
Your body is meant to traverse rough ground all over the earth and lift objects on various types of uneven ground.
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.
So during the winter melted snow and rain would puddle there and freeze.
I d slope it as much as you can stand.
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.
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.
Your figure of 1 4 per foot doesn t sound bad.
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.
Actually a very slight slope like 1 16 will get rid of the water with a little help from a squeegie.
An un even floor in your garage it is very common.
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.
Determining the angle of your floor s slope provides a simple method to level work surfaces in the garage.
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.
But they got one low spot right where i got out of my car.