Washout at Dawlish

[phil gollin]

...........

 

 

http://www.rmweb.co.uk/community/uploads/monthly_01_2015/post-22449-0-12352800-1421606694_thumb.jpg

 

 

front of concrete pump

 

are those pipes to connect to the compressor?

 

....................

 

.

 

Almost certain that they are flexible hydraulic pipes from the units pump to the two large hydraulic rams that you can see starting from just behind the towing hook.

 

A concrete pump usually works by having a dual-direction Archimedes screw working in the entry hopper which brings the concrete over two openings, which are alternately opened and closed by a hydraulically operated "sliding" valve.

 

So as RAM A is drawn back valve A opens and concrete falls into the gap.  Valve A closes and ram A pushes forward pusing concrete down the pipe.  As this is happening ram B and valve B have been doing the exact opposite, so that there are two "pushes" per cycle.

 

If one watches the end of the hose (or unsecured sections of flexible pipe) one can see the pulses.

 

There is a variation with a simple single piece valve operating over both pipes.

 

.

Edited January 18, 2015 by phil gollin

[brianusa]

[

 

And what a pleasant afternoon, hardly any breeze, lovely warm sun, calm seas

 

"Calm Sea and Prosperous Voyage"!

 

Brian.

[surfsup]

A very impressive video has been posted tonight by our aerial vehicle friends at Aerial Technics of the work from the Barge to install the Concrete L Pieces.

 

https://www.youtube.com/watch?v=gFDv2OB3ieA

 

And thanks for the explanation CK, I hope time and tide will be on the teams hands if and when they can face the new concrete wall with masonry - will be fantastic to see the finished product hopefully not resembling the (to me) sad reconstruction of the former Aller Junction area just up the line. I'd forgotten that once faced, it'll match the rest of the sea walls profile. Good luck to the team!

[trisonic]

Nice “drone” work there.

 

That’s where a drone beats manned aircraft.

 

Best, Pete.

[Granitechops]

From information received

 

the smaller Jacking Barge is named

 

"Haven Seajack"

And from looking at the drone footage,  on the seaward side its labelled  "Haven Seajack 3"

 

 but on the landward side its just "Haven Seajack"

 

Brilliant camera work by the drone operators

 

like the closing shot, they must have asked the tug captain to give it full welly to get the impressive wake

Edited January 20, 2015 by Granitechops

[Re6/6]

A big thank you to you Don for carrying on with all this interesting stuff long after the 'main project' is no longer in the news. 

[ChrisJD]

Nice “drone” work there.

 

That’s where a drone beats manned aircraft.

 

Indeed it is, an excellent piece of work.

 

They also seem to have had fun on this one, which I don't recall having seen here:

 

 

Chris

[PhilJ W]

Indeed it is, an excellent piece of work.

 

They also seem to have had fun on this one, which I don't recall having seen here:

 

 

Chris

Like the bit (speeded up) about 1.27 where the guy looks as if he's being chased by the digger.

[Granitechops]

A very impressive video has been posted tonight by our aerial vehicle friends at Aerial Technics of the work from the Barge to install the Concrete L Pieces.

 

https://www.youtube.com/watch?v=gFDv2OB3ieA

 

And thanks for the explanation CK, I hope time and tide will be on the teams hands if and when they can face the new concrete wall with masonry - will be fantastic to see the finished product hopefully not resembling the (to me) sad reconstruction of the former Aller Junction area just up the line. I'd forgotten that once faced, it'll match the rest of the sea walls profile. Good luck to the team!

Thanks for that

 

by going on Aerials You tube channel,  found a video of the containers being mashed

 

 

 

and moving of Searaiser 4 from Teignmouth docks to Dawlish

 

 

EDIT 

 

oops, sorry for duplication, did not see your post Chris.

Edited January 20, 2015 by Granitechops

[Professor Plumtree]

A very impressive video has been posted tonight by our aerial vehicle friends at Aerial Technics of the work from the Barge to install the Concrete L Pieces.

 

https://www.youtube.com/watch?v=gFDv2OB3ieA

 

And thanks for the explanation CK, I hope time and tide will be on the teams hands if and when they can face the new concrete wall with masonry - will be fantastic to see the finished product hopefully not resembling the (to me) sad reconstruction of the former Aller Junction area just up the line. I'd forgotten that once faced, it'll match the rest of the sea walls profile. Good luck to the team!

shame this video has been removed? any other way to see it?

[Granitechops]

shame this video has been removed? any other way to see it?

Perhaps there was something on there shown, that Amco or Red 7 felt, they did not want publicly seen???

 

but as its a very good publicity film

 

I dare say it will be back again when edited

 

just a guess but

 

( maybe someone was not wearing a hard hat)

 

glad I did not miss viewing  it,,  very good cameraship

[Gwiwer]

http://www.railwaysarchive.co.uk/documents/MoT_StreathamHill1969.pdf

 

Can't find the farlington one.

 

Andy G

 

Thanks to RailUK Forums I have located the incident I had in mind.  Not quite Farlington but close.

 

 

 

there (was) a serious accident with a Class 33 (33115) after it was involved with a collision with a track maintenance crane between Hilsea & Fratton, on 25th Febuary 1979, it was seriously damaged but returned to service months later, but an off-duty guard travelling in the cab was killed.

Edited January 20, 2015 by Gwiwer

[surfsup]

shame this video has been removed? any other way to see it?

I'm not sure I'm afraid - Looking at a few other sources, it would appear that It had a Coldplay track added over the video (I watched it with my ITunes playing so didn't have the sound on) so It would appear that it's been removed because of the soundtrack. No doubt it'll be back sometime again though. Until then, Dawlish Beach Cam has been providing regular updates as well as the excellent photo record by Don.

 

https://www.facebook.com/dawlishbeach?fref=ts

[Granitechops]

What the wave-dodgers forget

 

Log (1.5 cwt,  80 kilos?? )  thrown way above the high tide mark, up the slipway by

 

The Pirates Nest cafe & accros a 12 ft path

 

 

for the first time in weeks (Nov.?) the seawall walkway below the Dawlish town station

 

towards  coastguards bridge was passable by my wheelchair,

 

the sea had pushed the shingle there towards the back wall, leaving the front 3ft clear 

 

so I could get down to the breakwater by the Old Lifeboat House

 

so a few pics

 

looks like 10 ? units in place at 1.10 pm today

 

 

in close up it looks like 5-6 containers left on the wall

 

Edit, You can also see clearly in this pic the new foundation either side of the containers

 

 

guys working up above the containers,  

 

on the "L" units put in in March?

 

 

specialist operation,  anchor pins?  reinforcing?

 

 

swing arm loading? unloading?  dumper

 

 

 

compressor on Seariser 4 deck  

 

 

access ramp built after each tide,

 

 

 digger & motorised wheelbarrow on wall ( probably craned onto barge deck for high tides)

 

 

five different levels of concrete under pinnings/steps added as beach dropped progressively, over the years

 

 

the old disused sewage pipe running parallel to shore off to the Warren

 

bits breaking off the concrete casing

 

 

Slingers preparing for hoist by crane

 

 

cant quite see what though

 

 

at least 2 reinforcing cages on deck, I think these fit inside or behind the sets of 5 units

 

Edited January 21, 2015 by Granitechops

[Captain Kernow]

 

looks like 10 ? units in place at 1.10 pm today

 

 

in close up it looks like 5-6 containers left on the wall

 

 

specialist operation,  anchor pins?  reinforcing?

 

 

 

swing arm loading? unloading?  dumper

 

I made a detailed site visit today, lots of photos, which I will post up as soon as I'm able.

 

In response to Don's queries above, however:

 

- there were 19 pre-cast 'L' units in place as of lunch time today (I turned up with a colleague as one was being craned in). There will eventually be over 140 such units

 

- there are 5 containers left in situ, they will remain there until much of the lower walkway has had it's pre-cast 'L' units secured in place

 

- the operation that Don saw is drilling (deep) to install anchor pins for the 'L' sections (I have some close-ups of this operation)

 

- the digger further along the beach is at the location where the tide tends to lap the base of the wall first, so it is building up a temporary route for tracked plant, so that it can access the site earlier, when the tide starts to recede, and stay on site a bit longer. Every bit of time on site helps!

 

It looks as if I only just missed Don today, what a pity, I was on the look-out for you, but I then had to drive my colleague round to Teignmouth Docks to inspect the concrete units stored there.

[Saintly1941]

New member. As I'm used to seeing things from a different perspective, Dawlish Beach Webcam, I need clarification on something, maybe CK could help.

 

Could I have a clearer idea as to how many walkways are being used for Seariser and Seajack? My view is that Seajack is using a walkway recently but there has been speculation and debates as to what is actually happening.

 

Today Seariser's crane lowered it's boom to the deck. I never saw this but talk was going on about maybe platform was being moved because the walkway was on the deck of Seariser. I got into a debate as to what I had seen over the last week or so and more or less argued the fact that the walkway wasn't moved from Seariser as it was always on Seajack.

 

Now I see things in a different light as it was pointed out that after I challenged someone to look at the run back on the cam, and report if they saw 2 walkways. Some time later I put it to the test by stating that there might have been some confusion over the difference between a walkway and a crane boom. So the response that came back was that there is 2 walkways and it then dawned on me that although I could clearly see the Seajack's walkway maybe there was another connecting Seajack to Seariser. How else would the orange army get off Seariser when their shift was over?

 

So could someone put me in the picture if they have had a much clearer picture than I was able to see, being on the blind side.

 

TIA

 

Roger

Edited January 21, 2015 by Saintly1941

[Granitechops]

New member. As I'm used to seeing things from a different perspective, Dawlish Beach Webcam, I need clarification on something, maybe CK could help.

 

Could I have a clearer idea as to how many walkways are being used for Seariser and Seajack? My view is that Seajack is using a walkway recently but there has been speculation and debates as to what is actually happening.

 

Today Seariser's crane lowered it's boom to the deck. I never saw this but talk was going on about maybe platform was being moved because the walkway was on the deck of Seariser. I got into a debate as to what I had seen over the last week or so and more or less argued the fact that the walkway wasn't moved from Seariser as it was always on Seajack.

 

Now I see things in a different light as it was pointed out that after I challenged someone to look at the run back on the cam, and report if they saw 2 walkways. Some time later I put it to the test by stating that there might have been some confusion over the difference between a walkway and a crane boom. So the response that came back was that there is 2 walkways and it then dawned on me that although I could clearly see the Seajack's walkway maybe there was another connecting Seajack to Seariser. How else would the orange army get off Seariser when their shift was over?

 

So could someone put me in the picture if they have had a much clearer picture than I was able to see, being on the blind side.

 

TIA

 

Roger

Hi Roger & welcome

 

Having viewed & photographed from several  different angles

 

I can only tell you what I have seen

 

I have only seen the gangway in use on the Seariser 4

 

not on the Seajack, but if you look carefully at my pics on the first post on page 183 of this thread,

 

you will see a zig zag folding black ladder out of use hanging below the Gangway

 

So maybe Seajack has one of those aswell

 

to the right of Seariser you will notice a 'rope' ladder, I have previously seen another rope ladder on the north side as well

 

but that was before Seajack arrived.

 

But Seajack has been seen with  rope ladders

 

yesterday the hydraulic crane on Seajack was using a man cage to support men working on the units,

 

so that could also be used to put men 'Ashore'

 

 

The two barges seem to be about 4-6 feet apart

 

& in yesterdays pics they were at different heights while loading units off the delivery pontoon

 

so they have to be far enough apart not to foul each other.

 

I would have expected there to be a short connecting removable bridge between them for more flexible working

 

when I saw Seajack in Teignmouth Docks I could not see a gangway on there

 

 

BUT I have not been in Dawlish every day, so can only say what I saw

 

 

EDIT;-

 

but one thing's for Sure

 

if you see gangway stowed on deck & both barges jacked way up

 

Theres a storm coming!!!

Edited January 21, 2015 by Granitechops

[Captain Kernow]

As of lunchtime today, the gangway was on the smaller Jack-Up Barge (didn't realise that was called the Sea Jack - we call it 'JUB 2'). There was a linking gangway between the two, because there was no other way of getting onto the Sea Riser ('JUB 1'). The rope ladders are really only there for emergencies. Only specially trained personnel are allowed on the JUBs. Harness training is required for all people working on the low level wall, I wasn't able to receive this (although I did have a special induction, which was quite rightly a detailed process in itself), but my induction allowed me and the colleague showing me around to walk underneath both JUBs at low tide today.

 

As of this evening's high tide, the plan is to separate the two JUBs, to allow the smaller one (Sea Jack) to be used in connection with the London-end of the works, whilst the larger one will remain where it is for now (albeit moving slightly as the 'L' sections are put into place).

[Captain Kernow]

Just a few of the hundreds of photos I took today...

 

The general scene from the Dawlish end:

 

 

 

 

 

The route of the concrete supply pipe down from the main road to the railway, showing the under-track crossing and where the pipe exits onto the walkway:

 

 

 

 

Every tide, almost, the dip in the walkway near Coastguards gets filled with sand, which is rather soft and uneven underfoot, not good if you're carrying something heavy, for example. Here, the duty security guard has decided on his own initiative to dig the sand out and clear it back to solid ground, to help the lads working there. He was certainly working up an appetite! He didn't have to do this, he could have just sat in the hut with his mate and drank tea all day...

 

View from the breakwater:

 

Drilling holes for permanent anchor bolts (very long!) to hold the new pre-cast 'L' sections in place, once they're delivered to this part of the low-level walkway:

 

Distant digger activity (ensuring that the beach was as high as possible at a tide 'pinch point'):

 

More photos to follow.

 

[Saintly1941]

Thank you CK for confirming my arguments. Did you see the boom arm lowered today?

 

Also when the digger did it's work on the Easterly end where the equipment is, which I assume was to transport some cement in it's bucket. It dropped them off somewhere at the bottom of the ramp. Then made it's way around the Seariser with it's guide down the beach and traversed again the other side of Seariser.

 

I noticed 2 oranges on the beach at the time the remaining Ls were off-loaded. That wasn't you by chance was it? 

 

Okay Granite, I think I've grown accustomed to the mannerisms of the "JUBs" lol. I know when weather is going to prevail when both are on their toes.

[Captain Kernow]

One of the pre-cast 'L' sections being unloaded onto the low-level walkway. I think this is one of the 11 ton examples. Every 5th one is heavier, due to it having an internal dividing wall, to facilitate the pouring of reinforced concrete in behind, which is done for every 5 units:

 

 

Another view of the anchor drilling process:

 

The 19 sections in place as of earlier today:

 

Some closer views of the JUBs:

 

 

 

 

 

More photos to follow (but not necessarily this evening!).

 

 

[Granitechops]

Wow that house looks pretty derelict

 

yet once it must have been something special?

[Fat Controller]

Wow that house looks pretty derelict

 

yet once it must have been something special?

 

Wow that house looks pretty derelict

 

yet once it must have been something special?

|t almost looks as though it's still under construction.

[Granitechops]

|t almost looks as though it's still under construction.

Yes looking at it again

could be someone built an extension etc., and maybe ran out of money

 

there does not appear to be any glazing,

 

and either the front render was never decorated, or a cheap decorating job got badly weather worn over time

 

part of front is also boarded up

[Fat Controller]

Yes looking at it again

could be someone built an extension etc., and maybe ran out of money

 

there does not appear to be any glazing,

 

and either the front render was never decorated, or a cheap decorating job got badly weather worn over time

 

part of front is also boarded up

It reminded me of a lot of places you see around the Med where money's run out or the taxman's caught up with the owners..Or perhaps they couldn't get insurance because of the geology, and cut their  losses before finishing.  It'll turn up on one of the TV property programmes soon.

Edited January 22, 2015 by Fat Controller