Rank: Forum user 
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Hi,
will GI Works be classified as " Construction works" under CDM Regs?
Many thanks in advance.
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Rank: Super forum user 
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Yes.
No change from 2007 to 2015.
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Rank: Forum user
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Excuse my ignorance , but what is G.I ???
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Rank: Forum user
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achrn wrote:Yes.
No change from 2007 to 2015.
But I couldn't see GI ( Ground Investigation) works in L144, classified as " construction works".
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Rank: Forum user
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Paul B wrote:Excuse my ignorance , but what is G.I ???
Ground Investigations
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Rank: Forum user
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aamir
I think it would probably fall under:
the preparation for an intended structure, including site clearance, exploration,
investigation (but not site survey) and excavation (but not pre-construction archaeological
investigations), and the clearance or preparation of the site or structure for use or
occupation at its conclusion; (page 11 - L153)
I suppose its down to definitions, I see a site survey as the use of CAT scans etc and the term ground investigations carrying out boreholes, trial pits and excavations etc.
So following this rationale site survey no, but ground investigation yes
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Rank: Super forum user
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aamir wrote:achrn wrote:Yes.
No change from 2007 to 2015.
But I couldn't see GI ( Ground Investigation) works in L144, classified as " construction works".
Firstly, L144 is no longer relevant - it's a document relevant to the cdm2007 regs now superseded.
Secondly, there's no need to consult any guidance doc when the regs themselves clearly state "'construction work' means the carrying out of any building, civil engineering or engineering construction work and includes ... the preparation for an intended structure, including site clearance, exploration, investigation (but not site survey) and excavation"
GI is a preparation process of investigation and (normally) excavation.
It might be arguable that if it's a GI that's not in anticipation of any structure of any sort, then they don't apply. I'm not sure I've come across a case of a GI that's not in anticipation of a structure or changes to an existing structure.
(Actually, there's a tiny exeption - if it's a GI exclusively for exploration with a view to extraction of mineral resources, then it's not included under CDM).
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Rank: Super forum user
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I have never classed a typical ground/geotechnical survey/investigation as construction work, including bore holes and minor excavation but this post has made me review my opinion.
I think common sense has to prevail. I believe most ground/geotechnical survey/investigations carried out to gather pre-construction information is a “site survey”. Unfortunately the regulations have not defined what a site survey is!
I accept the intention is to put up a structure following a GI but GI should investigate many features of the whole site (the baring capacity being one on them) and be carried out early prior to any real design.
However I can see circumstances where the timing, scale and nature of the ground investigation would make it construction work. I know of a project that has involved significant excavations to establish what was buried on a contaminated brown field.
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Rank: Super forum user
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Alfasev wrote:
I think common sense has to prevail. I believe most ground/geotechnical survey/investigations carried out to gather pre-construction information is a “site survey”. Unfortunately the regulations have not defined what a site survey is!
I think you're wrong, but clearly it will be down to the court to actually decide.
The previous ACOP said that surveying "includes taking levels, making measurements and examining a structure for faults", and a GI with pits (even minor ones) and boreholes is clearly a wholly different sort of work to looking at stuff and measuring it (at least, it is to my mind).
I personally would find it very difficult to stand in a witness box and maintain that a 'Geotechnical Investigation' was not an investigation.
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Rank: Super forum user
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achrn, it is grey, open to many interpretations and I am not closed to the possibility that it is. It would help if a court actually decided as long as I am not in the dock!
In my experience the industry generally does not class GI to gather preconstruction information (PCI) as construction work. There has been thousands of standard GI carried out all over the country and I have never heard of any action by the HSE regarding this matter.
Often the GI is done very early and forms the backbone of the PCI and I cannot see what it would add by classing it as construction. It appears daft to me to have PCI, CPP etc. to gather PCI.
We need to remember there are other H&S laws that apply and because CDM may not, does not let the survey company off the hook.
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Rank: Super forum user
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Alfasev
Collecting information for a PCI will rarely be the prime purpose of doing G.I. Its results inform permanent design (and constructability) and sometime temporary works.
Some of our G.I. contracts run to £100,000s so would be substantially construction projects in their own right.
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Rank: Super forum user
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Peter, I accept there are GIs that will be clearly classed as construction work, as per my previous post. I know what a GI is for but perhaps we are thinking about different ends of the market.
What I am debating which I did not make clear for my post is for example a 10-50 unit residential developments where the GI is in the region of £3-5k mark. Is it construction work or site survey?
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Rank: Forum user
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Alfasev
Please see my earlier post below on the subject, IMHO if it is just CAT scans etc that are not intrusive works this would not be construction works, however if the survey involved boreholes etc like a typical GI, then they would be intrusive works and classed as construction work.
Gav81 wrote:aamir
I think it would probably fall under:
the preparation for an intended structure, including site clearance, exploration,
investigation (but not site survey) and excavation (but not pre-construction archaeological
investigations), and the clearance or preparation of the site or structure for use or
occupation at its conclusion; (page 11 - L153)
I suppose its down to definitions, I see a site survey as the use of CAT scans etc and the term ground investigations carrying out boreholes, trial pits and excavations etc.
So following this rationale site survey no, but ground investigation yes
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