Guidance Notes wrt King Post Retaing Wall
Guidance Notes wrt King Post Retaing Wall
(OP)
In the UK if you wish to put up a retaining wall under 2m high, as long as it is not near a highway or next to building foundations, you can - without planning permission or advising building control. What DIYers do when building a retaining brick wall, is take note of construction guidance, often published by brick manufacturers. The situation may be the same in the US, I'm not sure.
However, if you wish to erect a king post wall and use railway sleepers (ties) there is not (it seems) any equivalent guidance.
Is there any structural / civil engineer on this forum able to write a guidance note for erecting a king post retaining wall made with "I" beams and railway sleepers? For a height say not exceeding 1.5m Possibly a public service project.
Thanks.
EDIT: Might suit a civil engineer who has a website. Guidance could be published on your website. Could you produce guidance notes for a worse-case scenario for a 1.2m retaining king post wall with railway sleepers as infill panels, posts made of steel "I" beams, where the banking that is being held up is soil and level?
However, if you wish to erect a king post wall and use railway sleepers (ties) there is not (it seems) any equivalent guidance.
Is there any structural / civil engineer on this forum able to write a guidance note for erecting a king post retaining wall made with "I" beams and railway sleepers? For a height say not exceeding 1.5m Possibly a public service project.
EDIT: Might suit a civil engineer who has a website. Guidance could be published on your website. Could you produce guidance notes for a worse-case scenario for a 1.2m retaining king post wall with railway sleepers as infill panels, posts made of steel "I" beams, where the banking that is being held up is soil and level?





RE: Guidance Notes wrt King Post Retaing Wall
This type of wall is known as a soldier pile wall in the States. Soldier pile walls are more common here as temporary walls instead of permanent. Solider pile walls are also used as sound barriers on sides of highways. Railway sleepers are known as railroad/railway ties in the States and are usually fabricated of timber material, not concrete.
Here is a general design guide.
http://www.wsdot.wa.gov/eesc/bridge/designmemos/07...
Some discussion is here:
http://www.eng-tips.com/viewthread.cfm?qid=106702
RE: Guidance Notes wrt King Post Retaing Wall
I wonder if ADMIN could place this thread in the right spot. (Earth Retention Engineering forum.)
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
If I want to build a small domestic clay brick retaining wall, in which the design represents the meeting of an obligation to put up a adequate wall, in terms of safety, then I can download a guide note from a brick manufacturer. In the UK, there is no need for planning permission or building control for small walls as long as they are not near highways or building foundations. But, of course a retaining wall needs to be safe.
In the picture I've provided, at the top (A) shows an adequate design for a clay brick retaining wall of 1 meter height. As long as ground and water pressures are minimal, it's a safe wall. It tells me I can put in a concrete foundation 500mm below the surface, 600mm wide and 125mm thick, and it points our other things as well.
Now, I'm not a structural engineer, but I imagine it ought to be possible to create a guidance note for a king post retaining wall (soldier pile and lagging), given certain restraints and conditions. For example the restraint that the wall is no more than say 1.4m in height and that the posts are steel and the lagging boards are no less than 100mm (4 inch) thick (as many railway sleepers are in the UK).
In the picture, (B) shows a king post retaining wall 1.2m high. There ought to be no issue with the steel posts, they will not bend I feel sure. The issues are span "S" and the nature of the foundation for the posts. Notice, the steel posts are either "I" section, or "C" section. In both cases quite substantial.
Link to my drawing below:
So, is it reasonable to create a guidance note for a king post retaining wall, given the restraints and conditions mentioned above? And what would that guidance note look like, in terms of span "S" and the concrete foundation?
RE: Guidance Notes wrt King Post Retaing Wall
As I look at the various alternatives, none are likely to work (for sure). Get a geotech involved.
RE: Guidance Notes wrt King Post Retaing Wall
You don't have to search far to find an example of a wall where someone underestimated or misunderstood the forces that soil can exert. Tilted, bulging, or tipped retaining walls can be found just about anywhere there are hills and construction. In some cases, designing a sound retaining wall can become a very complex task that is best left to an engineer. You also need to evaluate the long term maintenance aspects.
Don't understand why you are focused on soldiers piles either. One would think that a soldier pile will be more expensive to construct than a block wall.
http://www.motherearthnews.com/diy/build-a-retaini...
RE: Guidance Notes wrt King Post Retaing Wall
As to wall B. That is my initial concept of a king pole wall with wooden panels. Yes, it does not look like a gravity wall, and so it needs to be a form of cantilever wall. There is a hint of a cantilever in the lower left drawing, showing the post in concrete. The question would be is can a cantilever be created by placing a steel beam into some form of concrete foundation structure? As to the boards and the posts as drawn - indeed the boards only "connect" at their extremities with the beam members and so not a valid connection. Although you may see this design feature in some retaining wall offerings by some concrete panel manufacturers (if I'm not mistaken).
RE: Guidance Notes wrt King Post Retaing Wall
I suggest looking into a crib wall made with those RR sleepers. Here are some ideas of larger walls. Be sure to tilt it back a little for better stability. Rough out the dimensions by a scaled method. I would bet you can do it much cheaper than as indicated with the King posts. Backfill the crib with sand and gravel for drainage.
http://web.mst.edu/~rogersda/umrcourses/ge441/onli...
https://www.google.com/search?q=bin+type+cribs+wal...
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
https://sefindia.org/rangarajan/MASONRY&CONCRE...
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
The lack of some simple engineering checks can come back and bite the "seat of the pants" guys, either not enuff beef in it or well over built.
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall
RE: Guidance Notes wrt King Post Retaing Wall