An at least 121 year old bench mark on Mill Hill Chapel.

liits · Post by **liits** » Fri 05 Oct, 2012 8:44 pm

Studs in the pavement often denote curtilage of the premises [but can also be used to define the extent of subsurface extensions]Normally, where the Local Authority want a uniform look to the paved surface, a mutual agreement is reached with the land owner under Section 106 [Town & Country Planning Act] Agreement and the LA carry out the work and install the studs.Once it’s done, the LA are not normally under any obligation to maintain the surface, and that includes sweeping it, and there is no implied consent of right of way from the land owner [Highways Act 1980 Sec 31].

Cardiarms · Post by **Cardiarms** » Fri 05 Oct, 2012 8:44 pm

Usually yes.

Leodian · Post by **Leodian** » Fri 05 Oct, 2012 8:46 pm

Si wrote: liits wrote: The Trinity Church benchmark is a “Bolt” benchmark ie. it has a lead / copper stud at the head of the arrow. This put me in mind of those "bolts", or studs, which are sometimes seen as a series in line, embedded in the pavement. IIRC, there are some on the pavement of Albion Street in the vicinity of Tiger Tiger. As the building overhangs the pavement, I wondered if they show a boundary edge, or something similar.Anyone know for sure? Hi SiI have seen a line of those bright metal looking embedded studs in a few places and have wondered what they are there for as there usually seems to be no obvious reason. It would be interesting to find out.

Leodian · Post by **Leodian** » Fri 05 Oct, 2012 9:03 pm

Thanks to liits earlier information I found the bench mark on Holy Trinity Church today (Oct 5 2012) and took this photo. The bench mark is quite easy to see, so I don't know why I missed it when I have previously looked for it! It is unclear if it is marked or not on an 1850 1:1,056 map in the Old-Maps UK website but it is clearly marked there in an 1891 1:500 map.

Leodian · Post by **Leodian** » Fri 05 Oct, 2012 9:08 pm

This is a close-up view of the bench mark at Holy Trinity Church. I did notice the yellow stuff but did not check to see if it could be chalk (?) possibly used at some point to make the bench mark more obvious, or if it is a yellow lichen type growth that survives any washings of the surface.

liits · Post by **liits** » Fri 05 Oct, 2012 9:37 pm

Leodian wrote: This is a close-up view of the bench mark at Holy Trinity Church. I did notice the yellow stuff but did not check to see if it could be chalk (?) possibly used at some point to make the bench mark more obvious, or if it is a yellow lichen type growth that survives any washings of the surface. Its yellow wax crayon and it denotes that it is a benchmark seen, photographed and recorded by Roger Templeman, who is to OS Benchmarks, what our very own PhilD is to tunnles.If you look at my flickr set, you'll see that almost all of them are "Templeman-d" with the same crayon.As to the mark not being on the 1850 OS maps, it was part of the First Primary Levelling, England & Wales (1840-60)."This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 114.7010 feet [34.9609 metres] above mean sea level (Liverpool datum)". It was included on the Liverpool to Spurn Head levelling line.The last time the OS actually went around and did a complete physical survey was 1971.

Leodian · Post by **Leodian** » Fri 05 Oct, 2012 10:11 pm

Thanks for that liits. I noticed on the 1891 map that it is marked B.M. 114.70, thus the 114.7010 feet you state. I assumed the 114 was feet but I was not sure what the .70 was.