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Author
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Topic: Foundations
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Gothic Builder
Senior Member
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posted 11-11-2000 05:21 PM
  
How deep were the foundations on must castles if not built on bedrock and just what kind of renforceing was used? Say for a tower wall. |
duncan
Senior Member
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posted 11-12-2000 07:47 AM
Depth depended on the soil and a few other things. To make a very long answer short, they varied from 8 feet to 22 feet of the ones that i have a personel knowledge of.
The lime concrete was 'reinforced' with rubble, broken tile, bricks, and limestone. I know of one that was built with alternating layers of peat and logs over 20 feet deep. It was built too near a river and the walls are now sinking after apox. 600 years.
The type of foundation's also varied giveing the builder more lee way in his design. How tall is your tower going to be and how wide the walls? |
wurdsmiff
unregistered
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posted 11-12-2000 04:21 PM
Kilmaronock Tower, to the south of Loch Lomond used a talus (batter)to provide more stability. That is a base wider than the main structure, sloping out at an angle from the vertical walls. This is used as a defensive feature in other countries, though in this case as a stabilising technique within soft marshy ground. ------------------
Demeure par la verite
Visit my web-site at
www.castlesontheweb.com/members/wurdsmiff/castles.htm Gordon. |
Gothic Builder
Senior Member
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posted 11-12-2000 07:34 PM
Well lets see if I have a problem Hmmmm!!! No one in this general area has ever delt with these kind of weights or attempeted to build a tower, so with a lot of questions this was our best guess. As you all know We've started the castle and heres the slight problem. I hope not, well the foundation is poured at 3ft. wide and 12 in. deep with 3500 inforcement mess throughout and (3) 1/2in. strands of rebar all the way around. The tower will be 34ft. in hight. Width 16ft.x16ft. outside wall. Built on to a ground of very hard white clay.
How deep were butteress put in to the ground if they are need be for them.? http://www.geocities.com/Nashville/9349/
[This message has been edited by Gothic Builder (edited 11-12-2000).] |
duncan
Senior Member
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posted 11-13-2000 06:07 AM
GB, i've got to start at the begining so please have patience if i say something you allready know i mean no desrespect.
Your footing should be well below the frost line and your clay is going to place it wider and deeper then normal. The rule of thumb is that the footing should be twice the width of the wall it supports and the depth of the footing should be the same as the thickness of the wall.
The two types of foundations are wall or column {pier}. The wall type is built solid as it is used to support heavy construction for its total length and is more often used where the earth has a low supporting stength as in clay. I can speak from experence here, This houses's foundation was built on black clay and it supports 3 foot thick rock walls for a height of over 38 feet and its over a 100 years old with no foundation problems. It's 6 feet deep x 6 feet wide with no cracking and the rock used here is grade A heavy sandstone each peice is apox. 10 inchs thick x 2 1/2 to 3 feet long x 3 feet wide. Just to let you know that clay can support a heavy load.
The buttress were for the most part also the same depth of the footing and foundations. |
Gothic Builder
Senior Member
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posted 11-13-2000 07:31 PM
Thank you!!!! This is about the same info from some of the contractors Maybe I should let a few of them know if they ever run into this kind of problem again. I've been talking to so, I'll just have to pour the first 4ft. up from the footing 3ft. thick since I've already put the stone up on the base. The block we've decided on will match the dementions you were talking about. They are 12Tx12Wx15Lin. Actually the footing will be wider than need be. The frost line here never gets below 6 in.
Well Thanks again for the info. This sight has proven to be great for this indever I've took up.
http://www.geocities.com/Nashville/9349/ |
jsmith4973@aol.com
Member
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posted 01-01-2001 09:02 AM
I estimate the entire construction site for my outdoor model of Ludwig's castle to be aboiur 100'x50'. But it is on a fairly steep slope, just as is the full size one. We do have a backhoe and a small John Deered dozed.What's first, the graph paper and the cusswords? |
duncan
Senior Member
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posted 01-01-2001 11:37 AM
Well to start with, what is your plans on, computor or paper? The cuss words may follow soon. Either way you have to transfer the plans to a workable footing on site. Some people use stakes and tape measures, others lasers to lay out the ground plan. From that point, dig your footing and prepare for the foundation. It's not as hard as it may sound.
Watch your cross measurments on the square of the sides as this is what gives most people a problem. Keep us here in Castle Quest informed as to your progress, sounds interesting to say the least. I wish you the very best in your undertakeing.------------------
Megan and Ralph
CASTLE DUNCAN If you have built catles
in the air your work need
not be lost; that is where
they should be. Now put
foundations under them.
H.D.Thoreau |
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