Mark Mayer, post: 433593, member: 424 wrote: So it is. The lighting has a mid-winter feel about it, also.
Shortest day of the year yesterday, Winter Solstice. Expecting a Southerly (Antarctic) storm today with snow to 600m.
Lyttelton is adjacent to Christchurch, New Zealand - the place that was devastated by earthquakes. And yep today she's pretty bleak down there weather-wise.
Holy Cow, post: 433602, member: 50 wrote: You mean you weren't born that way??:);)
If the girls ask well then yes, but between us all, surveying is an acquired taste.
kotuku4, post: 433604, member: 8886 wrote: storm today with snow to 600m
600m is a lot of snow.
Sorry I didn't type that well.
Snow down to 600m elevation, which is a decent dump of snow. Our highest peak is in the Southern Alps, Aoraki / Mount Cook elevation 3724m.
Most of us live near to coast at low elevations and don't get snow on the ground. Our main south route state highway 1 and main trunk railway line is closed since the November 2016 Kaikoura earthquake and may be reopened by this Christmas. Access is via alternate inland routes over alpine passes, snow can close these roads, and significantly disrupt transport and delivery of essential supplies.
There is quite a lot of rebuilding work underway the Port Lyttelton Christchurch and Wellington port following earthquakes. We are quite reliant on coastal shipping.
kotuku4, post: 433616, member: 8886 wrote: Sorry I didn't type that well.
Well, I was just having a bit of fun with it.
jim.cox, post: 433426, member: 93 wrote: "Office work" for me today
Laying out 2nd floor gridlines in the new Port Admin building
Looks all too familiar. We finished our part on a ?ñyear long project. We brought control to five floors marking "column lines" as we went. We also as-built every anchor bolt on every vertical beam. It was a project I enjoyed but hope I never have another like it.
Me. "What's the difference?"
T.C. Carroll "It's the difference between right and wrong!"
That's a pretty "optimistic" (some might say brave) setup on bare concrete... Is it chipped out under the other two legs as well?
Lee D, post: 433648, member: 7971 wrote: That's a pretty "optimistic" (some might say brave) setup on bare concrete... Is it chipped out under the other two legs as well?
Don't tell anyone, but when the foreman wasn't looking, a couple of chip marks were accidentaly created in just the right place to rest a tripod leg or two...
Also the S8 has an off-level alarm - if it does slip you will know.
I have several tripods for use on flat slick surfaces that have a peg installed at the top of the legs at an angle where they will rest against the head of the tripod and will not allow the tripod legs to open and collapse to the floor.
i use a tripod floor stand and a rubber mat under this stand. Is very robust. I've seen before that the instrument is sliding away, not a fun site (not for my boss at that time)
jim.cox, post: 433510, member: 93 wrote: Resection on control points surrounding and well back from the outside the building (note the lack of walls)
OK, thanks. We use to "wiggle in" from targets painted on adjacent multi story buildings or bring control in from marks in the streets. No EDMs , conventional 1' Buff & Buff transit, steel tape we just did the best we could back then. 1969...+
Tom Wilson, post: 433770, member: 247 wrote: OK, thanks. We use to "wiggle in" from targets painted on adjacent multi story buildings or bring control in from marks in the streets. No EDMs , conventional 1' Buff & Buff transit, steel tape we just did the best we could back then. 1969...+
Never used a 1' transit before, but it makes me wonder if you couldn't plunge the scope and estimate your miss, then continue to wiggle in ??
Were the transits of the day capable of making use of an inverted sight ??
R.J. Schneider, post: 433932, member: 409 wrote: Never used a 1' transit before, but it makes me wonder if you couldn't plunge the scope and estimate your miss, then continue to wiggle in ??
Were the transits of the day capable of making use of an inverted sight ??
Yes we would dump the tube and check the target using an "estimated" miss then move the transit head a little and repeat until we were happy with the results. Understand that the cross hairs (spider web back then) would obscure a no.2 pencil at about 200'. We just did the best we could with what we had. I had another job a few years latter where the client, large construction company from RI, I think number 2 or 3 in the country that year, gave me a brand new T-16 to use on their job, probably a 6" instrument but we still used a 100' steel tape to layout the 540' building, lots taping and temperature corrections.
Hard to picture what that was like. The reticle nowadays covers .. what .. one or two arcseconds ..?
http://www.davistownmuseum.org/bioBuff.html&apos ;">It is stated in some of their catalogues that these instruments could repeat lines on the ground within 3/10,000 ths. of an inch at a distance of 11,000 yds.
Tom Wilson, post: 433507, member: 247 wrote: So how did you bring your control up to the 2nd floor ?
Five gallon Home Depot bucket