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Chat Area => General Discussion Area => Topic started by: jerry on 12 April 2012, 14:58:33

Title: Any civil engineers out there?
Post by: jerry on 12 April 2012, 14:58:33
(http://)

Had an eventful evening last night following the rain and thunder when we had a landslide of mud run into our street when the "supporting" wall behind a recent new build collapsed. As you can see it fell onto the steps and narrowly missed a young lad. All the locals are not surprised tbh as before the house was built weve had mudslides before in heavy rain and unlike a local guy who built his own house into the cliff but spent about £100k on piledriving and shoring up before he even started to build his property this lot just quickly threw the place up with seemingly scant regard to any thought of properly shoring up around it. Anyhow, spent last night helping the builders clear up and make safe though the guy in charge seemed more concerned about what all the locals were saying to the press ;DIn fact today he has been doing his best to intimidate both locals from making comments to the press/TV and the journalists themselves so obviously this hasnt endeared him much. Guilty conscience perhaps? Luckily no one was hurt but the houses have been sold with one buyer due to move in in a couple of days. Im no builder or engineer but from the photos I think its pretty obvious that the land behind the property wasnt shored up correctly nor adequate drainage provided. Another case of trying to make a quick buck on the cheap?
Title: Re: Any civil engineers out there?
Post by: jerry on 12 April 2012, 15:05:31
oops-no photos!
Thought I knew how to do this-obviously not :-[Can anyone tell me (in idiot proof form!) how I insert images onto this post from "my pictures" ?
Title: Re: Any civil engineers out there?
Post by: twiglet on 12 April 2012, 15:07:11
oops-no photos!
Thought I knew how to do this-obviously not :-[Can anyone tell me (in idiot proof form!) how I insert images onto this post from "my pictures" ?

http://www.omegaowners.com/forum/index.php?topic=52309.0 (http://www.omegaowners.com/forum/index.php?topic=52309.0)  :y

Or email me the pictures at j.taylor7@uea.ac.uk and I'll post them for you.  :y
Title: Re: Any civil engineers out there?
Post by: jerry on 12 April 2012, 15:16:57
cheers twiglet :y
Title: Re: Any civil engineers out there?
Post by: marrus69 on 12 April 2012, 16:01:02
sounds like if thay where pile driving for the house that the soil was no good.the supporting wall would of been designed by an engieer with dranage beehind it,so the biulder our engieer  has mest up.blame game now.i have done a few now with what looks like egg cartoon stuff to back off wall to allow water to run down into a land drain normally 4"pipe with holes in it going to a drain and souronded by pee single.
Title: Re: Any civil engineers out there?
Post by: jerry on 12 April 2012, 16:07:16
sounds like if thay where pile driving for the house that the soil was no good.the supporting wall would of been designed by an engieer with dranage beehind it,so the biulder our engieer  has mest up.blame game now.i have done a few now with what looks like egg cartoon stuff to back off wall to allow water to run down into a land drain normally 4"pipe with holes in it going to a drain and souronded by pee single.

When you say "soil was no good", I take it that having a load of sand in it (we're 100yds from the beach) would come under that category then ;D
Title: Re: Any civil engineers out there?
Post by: twiglet on 12 April 2012, 16:20:28
Posting pics for Jerry...

(http://i770.photobucket.com/albums/xx344/qjz10nyu/euanstopicsandpierrdlandslide039.jpg)

(http://i770.photobucket.com/albums/xx344/qjz10nyu/euanstopicsandpierrdlandslide032.jpg)
Title: Re: Any civil engineers out there?
Post by: jerry on 12 April 2012, 16:29:29
cheers Twiglet
jerry (the ludite ;D)
Title: Re: Any civil engineers out there?
Post by: marrus69 on 12 April 2012, 19:26:43
yes sandey soil no good.but that wall is no good how did thay think that wall was going to stand up, the plastic sheet up aganst the wall is no good any water will run to bottom and wash it out,the wall itself is no good not thick enough no upright supports,made from blocks have no sheer strengh.even if thay had used this system in pic below it would have still colapsed,weve done ones smaller and the walls where three times that thick.
(http://i1223.photobucket.com/albums/dd515/rushton105/wall.jpg)
Title: Re: Any civil engineers out there?
Post by: marrus69 on 12 April 2012, 19:29:21
the membrane has a drain at bottom and is not air tight,the capping on top allows air in and out top of pic is the rain water pipe connected to the drain so it does not wash out soil below.
Title: Re: Any civil engineers out there?
Post by: jerry on 12 April 2012, 20:02:47
Yep, like I said Marrus, Im no builder but its pretty obvious this hasnt been done correctly/safely at all. Surely there are some building regs governing this sort of work? Anyhow, their boss hasnt been around for the past couple of hours-something to do with the combination of journalists and the inspector from the council maybe?  ;D Mind you, isnt there any sort of monitoring system in place by relevant council officers to try to prevent such things?
Title: Re: Any civil engineers out there?
Post by: twiglet on 12 April 2012, 20:14:05
There are building regulations that should be adhered to, and an inspector should visit the site and carry out inspections at key stages of the build.  Also, as they are new homes, I would have expected an NHBC inspector to sign off stages of the build, for their 10 year warranty.  :-\
Title: Re: Any civil engineers out there?
Post by: scimmy_man on 12 April 2012, 23:15:39
retaining walls unless part of the building are not covered under the Building Regs.

Title: Re: Any civil engineers out there?
Post by: twiglet on 13 April 2012, 08:11:25
retaining walls unless part of the building are not covered under the Building Regs.

Well that makes a huge amount of sense!  ::)
Title: Re: Any civil engineers out there?
Post by: Marks DTM Calib on 13 April 2012, 13:20:28
There are building regulations that should be adhered to, and an inspector should visit the site and carry out inspections at key stages of the build.  Also, as they are new homes, I would have expected an NHBC inspector to sign off stages of the build, for their 10 year warranty.  :-\

Depends on the type of building regs applied for!

If full plans then it will only be inspected at the end of the build (with maybe a single site visit at the start).

If building notice then it will be inspected at key stages of the build.

Also, as we all well know, the NHBC inspections are pretty much non-existant.

Some advice for all, if your ever having building work done then get full plans produced but opt for the building notice approach.

This means that the builder is quoting against the specifics of the detailed plans but, his/her work is being checked at regular points.

I dont trust the building trade one bit!

Problem is that if a retaining wall is detached from the structure of the house or does not provide support to the house its not covered by builidng regulations
Title: Re: Any civil engineers out there?
Post by: marrus69 on 13 April 2012, 13:59:50
There are building regulations that should be adhered to, and an inspector should visit the site and carry out inspections at key stages of the build.  Also, as they are new homes, I would have expected an NHBC inspector to sign off stages of the build, for their 10 year warranty.  :-\

Depends on the type of building regs applied for!

If full plans then it will only be inspected at the end of the build (with maybe a single site visit at the start).

If building notice then it will be inspected at key stages of the build.

Also, as we all well know, the NHBC inspections are pretty much non-existant.

Some advice for all, if your ever having building work done then get full plans produced but opt for the building notice approach.

This means that the builder is quoting against the specifics of the detailed plans but, his/her work is being checked at regular points.

I dont trust the building trade one bit!

Problem is that if a retaining wall is detached from the structure of the house or does not provide support to the house its not covered by builidng regulations

yes thats right, but ive seen some retaining walls 2m 3m high have you seen the size off this one its as tall as the house,this should have been picked up by some one recomending a minumum code. its only single block and looks like it goes all the way round the house.the last one we did was about the same hight. but we had to go up 2m and then in 2m forming a stepped bank.i think any none builder could see this is not right.
Title: Re: Any civil engineers out there?
Post by: MaxV6 on 13 April 2012, 18:07:03
was clearly never fit for purpose, penny pinching clueless shortcutting twits.

Title: Re: Any civil engineers out there?
Post by: jerry on 13 April 2012, 20:20:59
The boss man has arranged to have our street cleared and jetwashed tomorrow which is only right but he is keeping a rather low profile otherwise! I believe he is trying to blame the wall that runs alongside the steps for collapsing, rather than anything he has done. Problem with this line of argument is 1) the original wall -prior to him commencing work on the property-had been there for nigh on a century with no problems whatsoever and 2) he actually added to this wall himself and it is also this most recent work that has fallen over. It seems self evident to me that neither the 2 walls behind the property nor the one running at its side which runs parallel to the steps are sufficient to support the weight of soil and that there is blatantly insufficient drainage provided. As the side wall which collapsed onto the steps is (was!) the boundry against a public access (the steps) how on earth can them mucking about with this wall itself or doing work on "their" side that clearly impacted on that wall NOT be covered by any building regs???As an example, if you have a tree in your garden but, say, its branches overhang your boundry wall and are above a (public)pavement are you not responsible for maintenance of that tree and would therefore be liable if you failed such "due diligence" and a branch broke off and cracked a member of the public on the head whilst they were using the pavement? Remember, a young 8 year old lad going up these steps at the time the wall gave way was very lucky to escape injury.