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#1
02-12-2008, 09:25 AM
 Unregistered Guest Posts: n/a
How much Road Base do I need?

I have a driveway that is 1715 sq. ft. and I need to put 5-6 inches of road base down, how many square yards of road base should I purchase?
#2
02-12-2008, 04:21 PM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,220 Rep Power: 18
Re: How much Road Base do I need?

Quote:
 Originally Posted by Unregistered I have a driveway that is 1715 sq. ft. and I need to put 5-6 inches of road base down, how many square yards of road base should I purchase?
If I assume 6" (0.5') you need 858 cu ft. At 27 cu ft per cu yd, you need 32 cu yd, more or less. I assume it is sold by the cubic yard, not square yard.
#3
04-15-2008, 09:53 PM
 Unregistered Guest Posts: n/a
Re: How much Road Base do I need?

You would need about 36 tons wich would ethier be 3 bobtail loads or 1 pup truck load plus 1 bobtail.The average price down here in texas is about \$7 a ton.
#4
09-13-2008, 10:25 PM
 Unregistered Jen Guest Posts: n/a
Re: How much Road Base do I need?

Okay, how about a 300' long driveway, 12' wide, and say 4" deep.

And where do I get roadbase?!?
#5
03-25-2009, 01:27 PM
 Unregistered Guest Posts: n/a
Re: How much Road Base do I need?

want to do a basketball court. 26 ft Wide and 44 ft Long. I want to put down 10 inches of road base. How much road base do I need?
#6
03-25-2009, 04:56 PM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,220 Rep Power: 18
Re: How much Road Base do I need?

Quote:
 Originally Posted by Unregistered want to do a basketball court. 26 ft Wide and 44 ft Long. I want to put down 10 inches of road base. How much road base do I need?
10" is 10/12 ft
26 ft x 44 ft x 10/12 ft = 953 ft³
1 yd³ = 27 ft³, so 35.3 yd³
It compacts down so allow and 5% and round up, 38 yd³.
#7
03-25-2009, 06:22 PM
 Dirtman Senior Member Join Date: Dec 2008 Posts: 157 Rep Power: 5
Re: How much Road Base do I need?

Quote:
 Originally Posted by Unregistered want to do a basketball court. 26 ft Wide and 44 ft Long. I want to put down 10 inches of road base. How much road base do I need?
I agree with John on the compacted quantity of 35.3 yd^3, but 5% for compaction is too low. 3/4" crushed aggregate base will compact from 25 to 35% from a loose state (as delivered) to a compacted state (in-place). Compaction should be a minimum of 90% at optimum moisture. Of course, if you're doing this in your own backyard, you probably won't have a vibratory padfoot roller around so get it as hard as you can. What are you going to top this with, concrete?

I would add at least 25% to to the 35.3 yd^3 figure but better yet . . .

. . . check with the S&G plants in your area for the base plus delivery costs. Many plants have had soil density tests done on the material they sell and can give you the weights for both loose and compacted base at a specific density (i.e., 90%).

I realize this isn't a regulation court so the following is just FYI in case you need or want it:

NBA/NCAA - regulation dimensions are 94' long by 50' wide.
High School layout size dimensions measure 84' long by 50' wide.
Jr. High School layout size dimensions measure 74' long and 42' wide.

(Playing surface only, does not include out of bounds perimeter)
#8
04-08-2009, 07:42 AM
 Jr. Estimator Guest Posts: n/a
Re: How much Road Base do I need?

Where can i find a calculator online to compute roadway volume given typical roadway cross sections?
For example, I need to calculate the volume of material for a two lane roadway 6 meters wide, each lane 3 meters wide, 0.13m deep, with a 2% slope away from the crown with and additional side berm of 1.5m on each side at slope 5%. How much base and sub base do I need for a 1050m long straight road assuming losses from borrow, including expansion, roadway loss, and compaction, to be 30%.
An answer for this would be nice, but a hyperlink to a calculator online (free) would be better.

Thank you to anyone who can help

(I am replying to an existing thread because I hate it when I find a thread that only has one thing in it)
#9
05-20-2010, 11:47 AM
 Unregistered Guest Posts: n/a
Re: How much Road Base do I need?

Quote:
 Originally Posted by Unregistered I have a driveway that is 1715 sq. ft. and I need to put 5-6 inches of road base down, how many square yards of road base should I purchase?
you will need 53 tons at 6 in. compacted to 100%
#10
05-21-2010, 11:07 AM
 corn-fused Junior Member Join Date: May 2010 Posts: 3 Rep Power: 0
Re: How much Road Base do I need?

It looks like this thread is still visited so I have another one. I'm looking at putting in my driveway - current plan 14 ft wide x 1400 ft long (short road or long driveway) Since most companies price their rock by the ton, how many tons would I be looking of both base (I'm thinking #4) and then crusher run? I'm thinking 6 inches total for both.

thanks
corn-fused

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