Hungate York

[BAJR Host]

Video from Hungate... nice work there! :face-approve:

“When a sinister person means to be your enemy, they always start by trying to become your friend.”
William Blake

[student@gla]

and a nicer couple of guys (and girl hiding mostly out of shot at the start) u won't find :)

[wombat]

Does this display best practice? Looks a bit unsafe the way he is leaning over the edge of that deep pit, with the other guy stood on a little clump of soil that could give way any minute. Also, not entirely sure that it is going to be that accurate the way those tapes are flapping about in the breeze. Surely they should be using an EDM on a site that big?

[oldgirl]

quote:Originally posted by wombat

Does this display best practice? Looks a bit unsafe the way he is leaning over the edge of that deep pit, with the other guy stood on a little clump of soil that could give way any minute. Also, not entirely sure that it is going to be that accurate the way those tapes are flapping about in the breeze. Surely they should be using an EDM on a site that big?


On the EDM vs tapes point - I suppose it depends what you want. If they're planning at 1:50 scale then a 50mm error on the tapes is about the same as the width of the pencil line used to draw it (or the line on the plot). Plus, what are you really trying to achieve with planning these features? It's likely that such features were not dug originally to pinpoint electronic accuracy, so do they really need to be recorded in such a way? That's quite apart from the fact that there may have been slight over/under cutting of the feature during excavation. (especially with the level of groundwater in the feature, there is probably staining at the edges of the pit which could lead to slight overcutting in order to establish a 'clean' edge to the feature).

Personally (being an old luddite) I often prefer to hand draw plans and sections, it allows me further time to think about what I'm drawing. And to spot things that might have not been so apparent whilst digging. However, there are some sites and features (particularly complicated industrial structures in my experience) where you do need to use the machines.

So, no I don't think they automatically have to use such technology as an edm for this sort of feature. In any case of recording, error is more down to the human element than anything else.

[Dirty Dave Lincoln]

Well said Oldgirl!! my sentiments exactly, an EDM can be used for planning-but only of features on the surface of a site, to show depth of features we still need to plan them by hand to show a true representation of what was dug. The main problem with relying on EDMs for anything of great detail is that usually it is done by one person on site-and unless they do all the digging the detail is lost.
As for being a luddite-give me a pencil drawing anyday :face-approve:

[Paul Belford]

As a fellow-luddite I would agree with oldgirl and DDL - and also add that many "complicated industrial structures" are also best drawn by hand, again not least for the time taken on site to really engage with the physical remains and understand their sequence of construction and/or operation.

If you have a site grid that is initially set out using an EDM and regularly re-surveyed at intervals to check for drift, then that should be sufficiently accurate for most purposes.

[oldgirl]

Actually, Yes, thinking about it I agree. I think I was just trying to make the point that REALLY accurate surveying may be appropriate for structures which have been constructed accurately (if you see what I mean!), but not so much for those where the shape/size etc is not so critical to its function.

Oh dear, not very clear at all. Well, it's Friday and I've had a hard week..... ;)