timber crib walling
timber crib walling
(OP)
Where can I find outline spec. for timber crib walling, esp. thickness vs height?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: timber crib walling
You question doesn't provide enough information - I'm not sure how to help you.
Please describe your problem in detail -
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: timber crib walling
Given favourable ground conditions was hoping there would be information giving different heights of wall and their thicknesses, i.e 1m high Xcm thick, 2m high Ycm thick etc
RE: timber crib walling
River banks are particularly tricky. (You used the phrase, to retain a bank - it sounds like you are dealing with a river bank.) You have to consider not only the dimensioning of the wall for lateral loads, but also erosion, bearing capacity - and slope stability. Simply dimensioning the wall for the expected lateral forces is the easy part...
If I have misunderstood your problem, I apologize. Please provide additional details.
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: timber crib walling
Below the bank is solid ground. Above the bank will be gardens.
All we were hoping for was a no obligation ball park guideline, if possible.
RE: timber crib walling
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: timber crib walling
Soil conditions are virgin soil, well drained, light and sandy with stone.
RE: timber crib walling
Hire an engineer.
KRS Services
www.krs-services.com
RE: timber crib walling
I agree with KRSServices - you need to hire a local geotechnical engineer. If your bank was only 1.5 meters or less in height, we could point you in the right direction. But 7 meters? That's a major design effort - with significant risk to lives and property if it fails. I go back to my second post: would be better off hiring a good local geotechnical engineer to help you. To do otherwise is to court disaster -
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: timber crib walling
RE: timber crib walling
RE: timber crib walling
One method you might consider is a stepped back wall. Four feet high timber cribbing, step back about Four feet, another Four feet timber cribbing, step back, etc. Still, you would need some advice from a geotech on the width of the terraces and the effect of the surcharge on the bottom wall.
RE: timber crib walling
A 7 meter high retaining wall is not a do-it-yourself home project. Talk to one or more contractors who specialize in designing and building retaining walls. Are you building a wall and backfilling behind it or are you excavating to build the wall? The first wall may require a Reinforced Earth wall, a segmental block wall with geogrid reinforcement, a series of terraced low gravity walls, or some other type of precast concrete gravity retaining wall. The second wall may require a tiedback or soil nailed wall. Different contractors specialize in different types of walls. Most consulting geotech and structural engineers do not specialize in any of these types of walls. I would start with an experienced retaining wall contractor who has in-house design capabilities and licensed engineers. The contractor will be able to get any required testing or design parameters needed. Be prepared for a very expensive cost estimate. If the wall has a relatively small exposed face area, the price per square foot will be expensive and contractor interest may be low. If the wall has a great face area, the unit price will drop but the total price and contractor interest will become great.
RE: timber crib walling
RE: timber crib walling
I agree that 7m high walls are not "run of the mill". What do you do about 13m high walls with designers "assuming" that there's no problems!!! I'm in the middle of it. Trying to bathe in grease for all I'm worth.
RE: timber crib walling
RE: timber crib walling
If you propose to break the elevation into 3-4 foot walls, each higher level set back 6-8 feet, you might find the audience a bit more receptive.
If you are attempting to gain more area at the lower grades you should reconsider the suitability of the site.
You should also accept the loss of area at the top of the hill. If you cannot accept these trade-offs, then don't do it.
If you are simply attempting to take a steep hillside and 'square it off' to allow easier maintenance, there are thousands of years of experience to learn from.
RE: timber crib walling
http://www.state.nj.us/transportation/cp...