07-04-2020, 09:20 PM
Interesting topic, and timely to my world.
At my last house I had a perpendicular HARD passenger side turn to back in from a narrow street. My tolerances for backing or leaving was plus or minus 3-4'. My street was 30' wide but cars regular parked on both sides of the street. I could only enter and exit when all cars had gone to work. The center of the street (Crown) was about 2" higher than the curb which was 4" tall. The city building codes for driveway apron was controlled by ADA. I installed per the requirements that caused the 4" rise from gutter to sidewalk level in 2'.
I always raised the coach it maximum height. Even then, as Tom Said the Generator and aquahot exhaust brackets just barely scraped as I transitioned in and out and/or, if I didn't turn just right, the large roller under the hitch would carve my initials into the sidewalk.
The New house has a 5' rise in 150' similar to yours, but my street is about 3% slope towards my house. I am removing the 4" concrete and making a flatter entrance approach. Instead of -3% transitioning to + 3%. I'm making the initial slope about 1%, and making most of the rise in the middle 100' and flatter as I enter the garage. I have no sidewalk, ADA or neighbors parking on my street at the new place.
BTW the 4" driveway that exist at the new place, broke down rather quickly driving the Newell over it. The new drive way will be 6" concrete with #3 bar on 18" center over 8" of compacted CL II road base.
With a 150' long driveway you should be able to have gentle variable slopes, example, +/- 1% in the beginning (1st 1/4 distance), 4% in the middle (2nd section 1/2 distance) and 1% (3rd section or 1/4 distance) as you enter the garage.
Its not a going to be straight grade.
My 2 cents
At my last house I had a perpendicular HARD passenger side turn to back in from a narrow street. My tolerances for backing or leaving was plus or minus 3-4'. My street was 30' wide but cars regular parked on both sides of the street. I could only enter and exit when all cars had gone to work. The center of the street (Crown) was about 2" higher than the curb which was 4" tall. The city building codes for driveway apron was controlled by ADA. I installed per the requirements that caused the 4" rise from gutter to sidewalk level in 2'.
I always raised the coach it maximum height. Even then, as Tom Said the Generator and aquahot exhaust brackets just barely scraped as I transitioned in and out and/or, if I didn't turn just right, the large roller under the hitch would carve my initials into the sidewalk.
The New house has a 5' rise in 150' similar to yours, but my street is about 3% slope towards my house. I am removing the 4" concrete and making a flatter entrance approach. Instead of -3% transitioning to + 3%. I'm making the initial slope about 1%, and making most of the rise in the middle 100' and flatter as I enter the garage. I have no sidewalk, ADA or neighbors parking on my street at the new place.
BTW the 4" driveway that exist at the new place, broke down rather quickly driving the Newell over it. The new drive way will be 6" concrete with #3 bar on 18" center over 8" of compacted CL II road base.
With a 150' long driveway you should be able to have gentle variable slopes, example, +/- 1% in the beginning (1st 1/4 distance), 4% in the middle (2nd section 1/2 distance) and 1% (3rd section or 1/4 distance) as you enter the garage.
Its not a going to be straight grade.
My 2 cents
Dave, Karen, w/Buddy and Moose.
06' Newell #784
towing a 05' Featherlight enclosed trailer for toys and tools,
or a 21' F350
w KTM 300, and MTB in the back35' Packard 4 dr convertible
59' Nash Metropolitan
+ 4 more cars and 8 motorcycles
Carpe Diem. Have Fun
Tomorrow is not guaranteed.