UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 24
Default Cutting a cast iron waste pipe

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a sort
of inspection hole and hacksaw the back or is there an easier way. (for
direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor connections.
Will new plastic fit inside old cast iron joints.

Many thanks

Peter




  #2   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 43,017
Default Cutting a cast iron waste pipe

In article ,
Peter wrote:
Will new plastic fit inside old cast iron joints.


There's a clamp adaptor for this - from your local BM.

--
*Always drink upstream from the herd *

Dave Plowman London SW
To e-mail, change noise into sound.
  #3   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 2,538
Default Cutting a cast iron waste pipe

Peter coughed up some electrons that declared:

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a
sort of inspection hole and hacksaw the back or is there an easier way.
(for direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor
connections.
Will new plastic fit inside old cast iron joints.

Many thanks

Peter


Could you get one of these in?

http://www.hss.com/g/68230/Soil-Pipe...-150mm-6-.html
  #4   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 1,307
Default Cutting a cast iron waste pipe

Peter wrote:

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a sort
of inspection hole and hacksaw the back or is there an easier way. (for
direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor connections.
Will new plastic fit inside old cast iron joints.


A hacksaw will not cut cast iron without wearing out both yourself and
the blade quickly.
Angle grinder with cutter blade around the outside. There will be a 3
inch or so section that you cannot reach toward the wall, once you
cannot cut any mpre, just whack it with a hammer, it'll snap reasonably
claenly between the 2 ends of the cuts.
If mine, I'd replace all above the cut with plastic. Numerous adaptors
can be bought to mate them up.
Alan.

--
To reply by e-mail, change the ' + ' to 'plus'.
  #5   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 24
Default Cutting a cast iron waste pipe


"A.Lee" wrote in message
...
Peter wrote:

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a
sort
of inspection hole and hacksaw the back or is there an easier way. (for
direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor
connections.
Will new plastic fit inside old cast iron joints.


A hacksaw will not cut cast iron without wearing out both yourself and
the blade quickly.
Angle grinder with cutter blade around the outside. There will be a 3
inch or so section that you cannot reach toward the wall, once you
cannot cut any mpre, just whack it with a hammer, it'll snap reasonably
claenly between the 2 ends of the cuts.
If mine, I'd replace all above the cut with plastic. Numerous adaptors
can be bought to mate them up.
Alan.

--
Many thanks to all ( gonna give the angle grinder plus hammer a go)





  #6   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 1,226
Default Cutting a cast iron waste pipe

On Sun, 31 May 2009 11:33:18 +0100, Peter wrote:

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a
sort of inspection hole and hacksaw the back or is there an easier way.
(for direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor
connections.
Will new plastic fit inside old cast iron joints.

Many thanks

Peter


=========================================
B&Q sell a deep hacksaw frame (cutting depth up to about 6") which will
accept standard 12" blades.It's not very good quality compared
with many normal sized frames but quite suitable for this
occasional job. Screwfix and many other places sell blades suitable for
cast iron. Using the correct blade cutting cast iron is really quite easy
provided that you take your time, and it's much cleaner than an angle
grinder which will emit a stream of hot dust.

If you consider using one of the ratchet type cutters (not really true
ratchet) be aware that they're quite heavy and can be difficult to use if
you haven't got a clear section of pipe to cut. A casting seam can cause
some difficulty.

Cic.

--
==========================================
Using Ubuntu Linux
Windows shown the door
==========================================

  #7   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 886
Default Cutting a cast iron waste pipe

On Sun, 31 May 2009 11:33:18 +0100, Peter wrote:

I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches


The way I've done it in the past is to cut through as far as possible in
two places about a foot apart, then cut down the line of the pipe to join
up the ends of the cuts, so you take out a sort of curved rectangular
section. Then you can get the angle grinder in to complete the cuts
through to the back of the pipe.

Do wear a mask: something about cutting cast iron (or maybe what's coating
the inside of the pipe!) is really nasty if you get it in your nostrils.

And do make sure the cast iron section above the cut is very adequately
supported! Really you should remove the iron pipe above the cut
(carefully! - it's extremely heavy) and continue in plastic to the top of
the stack.

Will new plastic fit inside old cast iron joints.


If you're lucky you may find a plastic push-fit joint will seal onto the
CI, but generally I'd be prepared to get one of those thick rubber sleeves
with jubilee clips to bridge metal to plastic.


--
John Stumbles -- http://yaph.co.uk

Never believe anyone who claims to be a liar
  #8   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 25,191
Default Cutting a cast iron waste pipe

Peter wrote:
I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie make a sort
of inspection hole and hacksaw the back or is there an easier way. (for
direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor connections.
Will new plastic fit inside old cast iron joints.


If you can separate it at a joint, then it is easy enough to put plastic
into an old cast iron collar.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/
  #9   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 8,319
Default Cutting a cast iron waste pipe

John Rumm wrote:
Peter wrote:
I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie
make a sort of inspection hole and hacksaw the back or is there an
easier way. (for direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor
connections. Will new plastic fit inside old cast iron joints.


If you can separate it at a joint, then it is easy enough to put
plastic into an old cast iron collar.


Does one need to get PP or involve BC for replacement of a soil pipe?


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk


  #10   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 5,175
Default Cutting a cast iron waste pipe

On 31 May, 11:33, "Peter" wrote:

As my angle grinder wont cut thro 4 inches should I cut twice ie make a sort
of inspection hole and hacksaw the back or is there an easier way.


Ring it from the outside, but without breaking all the way through,
then tap it with a cold chisel at which point the (brittle) cast iron
cracks neatly. This avoids running a high-speed grinder disk (or "fan"
as they're known) through the Inner Contents Layer...

Cast iron grinds, saws, cracks neatly. Even belting it with a sledge
can be quite a neat way to dismantle it (with practice) and it doesn't
split past the joints. If you are using a hammer, then slipping a
wooden wedge under the pipe to be smashed stops loading the joint into
the next one. You don't even need to make the grinder grooves connect
all the way, if you just think about where the stress risers are
pointing and where it wants to crack when thumped.


  #11   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 25,191
Default Cutting a cast iron waste pipe

The Medway Handyman wrote:
John Rumm wrote:
Peter wrote:
I am about to connect 4 inch waste from a new attic conversion to an
external cast iron one. Currently it rises to above roof level. Some
questions:-

As my angle grinder wont cut thro 4 inches should I cut twice ie
make a sort of inspection hole and hacksaw the back or is there an
easier way. (for direct connection at attic floor level)
Should I replace all to ground level or to existing 1st floor
connections. Will new plastic fit inside old cast iron joints.

If you can separate it at a joint, then it is easy enough to put
plastic into an old cast iron collar.


Does one need to get PP or involve BC for replacement of a soil pipe?


PP only if its listed I would expect. New connections to soil pipes
possibly ought to be notified - not sure about replacement.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/
  #12   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 886
Default Cutting a cast iron waste pipe

On Mon, 01 Jun 2009 21:15:58 +0100, John Rumm wrote:

The Medway Handyman wrote:


Does one need to get PP or involve BC for replacement of a soil pipe?


PP only if its listed I would expect. New connections to soil pipes
possibly ought to be notified - not sure about replacement.


Pretty sure the BCO wouldn't be interested if it's like for like.

--
John Stumbles -- http://yaph.co.uk

Men are from Mars, Women are from Venus
and Pop Psychologists are from Uranus
  #13   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 2,988
Default Cutting a cast iron waste pipe

On 1 Jun 2009 23:08:51 GMT, YAPH had this to say:

On Mon, 01 Jun 2009 21:15:58 +0100, John Rumm wrote:

The Medway Handyman wrote:


Does one need to get PP or involve BC for replacement of a soil pipe?


PP only if its listed I would expect. New connections to soil pipes
possibly ought to be notified - not sure about replacement.


Pretty sure the BCO wouldn't be interested if it's like for like.


Only if it's real like-for-like and not such as PVC for cast iron :-)
(especially for a listed or otherwise historic ("interesting")
building).

I was talking the other day to our LA's conservation officer. There
are several buildings in the city centre area which aren't listed, nor
do they justify listing individually, but his aim is to have the areas
around them designated as conservation areas so that some control can
be exercised over development/alteration of individual buildings.
Although I have a healthy disrespect in general for 'civic centre'
type people, I think he has some good ideas. I hope he has some
influence with councillor/cabinet types and the DoE or whatever it's
called this week.

--
Frank Erskine
Sunderland
  #14   Report Post  
Posted to uk.d-i-y
external usenet poster
 
Posts: 1,982
Default Cutting a cast iron waste pipe

On Tue, 02 Jun 2009 01:05:27 +0100, Frank Erskine wrote:

Only if it's real like-for-like and not such as PVC for cast iron :-)
(especially for a listed or otherwise historic ("interesting")
building).


Still wouldn't be the BCO though, would it? It'd be the CO?

/pedantic :-)


--
John Stumbles
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
cutting into cast iron waste stack [email protected] Home Repair 25 March 27th 07 03:00 AM
cast iron waste pipe stressed out UK diy 3 September 21st 06 12:32 PM
Cutting old, delicate cast iron waste pipe blueman Home Repair 14 October 9th 05 06:48 PM
Cutting a 3" hole in cast-iron waste stack [email protected] Home Repair 14 April 22nd 04 01:42 PM
Replacing cast iron waste pipe Steve Loft UK diy 7 April 12th 04 01:01 AM


All times are GMT +1. The time now is 02:38 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"