how many cinder blocks would i need as a foundation for my mobile home its a 12x 65?

Answer 1

How large are the cinder blocks are you going to use? If you are using a 12 inch long blocks, then it would be 12 on two sides and 65 on the other 2 sides. If you are using 18 inch long blocks, then it would be 8 blocks on the 12 foot sides and 43 & 1/3 on the other 2 sides. It would also depend on how high you want it to be. If you are going to make it 2 feet off the ground and the blocks are 6 inches high then you would need 4 rounds of blocks.
Does this help? Take the number of feet of each side and multiply by 12 inches to get 144 inches on the 12 foot side. The 65 foot side would be 780 inches. Then divide the by the length of block you are using.
Do the same for the height you want it to be off the ground.
Then add the number the number of blocks needs and multiply by the number of rounds you want it to be high and you will get the number you should need.
Thanks

Answer 2

Aprox. 116 blocks per coarse/row. 65' + 12' X 2 = 154 linear ft. 154 divided by 1.33' (cinder block is 16" long 1.33'). You need to figure the height of the foundation and times it for each coarse allow for the proper depth of footer where you live because of the frost line! Of couse you have mortar joint lines that make up some of the total linear length but you always need extra to allow for scrap/waste. This calculation can also depend if you are build on a flat surface.

Answer 3

Cinder blocks are 17 1/2 inches long by 7 1/2 inches wide. Figure the number you need from there.

Answer 4

It really depends on how HIGH the bottom of the mobile home is from the ground and if the ground is level.

Most homes are about 18"-24" inches above the ground. and teh blocks need to be on eight foot centers (Distance of blocks from each other)

Typically it would be laid out like this.

* * * * * * * * *

* * * * * * * * *

Each * is 8'ft away from the other *

So a close estimate will be 2 blocks per * meaning you would have approximatley 36 - 8"x8"x16" blocks and maybe 18 - 4"x8"x16" blocks (Depending on height)

Hope this helps

Answer 5

116 per course. Assuming you are using 8x8x16 block. You have a perimeter of 154 feet or 1848 inches. Divide that by 16 inches you have 115.5 or 116 block. From there you need to figure the height of the block wall and divide it by 8 inches, the height of one block. If 48 inches tall, for example, it is 6 courses, which means the total is 116 x 6 which is 696 blocks. This is actually a bit extra, but having a few extra is a good idea. You need to check with building department to see what they require and any extra details.

Answer 6

You are in for some heavy work if you have to build the foundation after putting the home in place. Most installers use a bobcat and dig out a crawlspace, form up for the poured foundation, lay the concrete, then the blocks, then have the units brought in by truck, use open ends to get it into place, and lower them onto the foundation and blocks. That is the usual sequence. The crawlspace allows you to get the units into place by driving through the open spaces on the ends. These ends are then closed up with block, but most of the weight is distributed along the sidewalls. Some use metal beams across the sidewalls to assist in weight bearing. doing a double wide means you will also have to have weight bearing capability along the center line lengthwise (hence, the reason for the beams). Each unit is its own system, but when joined, they have to have something for the two sides that meet to rest on. Your best hope is that you have a slight slope for placement of the units, as this allows for less dirt removal and assists in getting the units into place with as little work on the high dirt end as possible. Good luck. Sounds like there is a little glitch in the actual phasing on this one.

Answer 7

It depends on how level the ground is that you are setting it on, and also depends on the guidelines for your state. Different states have different guidelines for pier spacing and height requirements. That's going to be the biggest factor. You will have piers in the front and the back, at probably at least 6 feet spacing, and anywhere from 2-3 feet high...maybe more if the ground isn't level or depending on your states regulations. You will also need wooden blocks and splints to help level the trailer on the bricks.

Answer 8

first what everyone else is forgetting is that you have to subtract out the mortar joints per coarse (that's a line of blocks) subtract at least 1/2 an inch to 3/4 of an inch per coarse or you will end up with a huge pile of extra blocks.

Answer 9

It would all depend on how level the ground is that you are putting it on. It could have to be higher at one end or one side than the other which would call for more blocks.

Answer 10

Go to the pro desk at Home Depot. They usually have the tools to help you.