post your pictures of bridges

avondale87 wrote in post #19439435
We make them to last here John

Were you in on the original design, Richard?

Ray.Petri wrote in post #19441372
Were you in on the original design, Richard?

Steady down Ray. I'm Holocene not Pleistocene
Bit before my time

avondale87 wrote in post #19441376
Steady down Ray. I'm Holocene not Pleistocene
Bit before my time

It's early morning here Richard - and big words are getting the better of me - so I had to refer to the Gospel according to Google - and found this - The Holocene epoch is the name given to the last 11,700 years of the Earth's history — the time since the end of the last major glacial epoch, or "ice age".
11,700 yrs. Hmmm! I suppose we can give-or-take a couple of years on that

Ray.Petri wrote in post #19441366

Inspeqtor wrote in post #19441112
4km equals 2.485 miles

My calculator will convert length temperature, volume and more (fixed covert to convert)

Hidden talent, eh? I didn’t realise that you were a mathematician Charles?

I was a precision machinist in the tool & die trade for 52 years in the beginning working in thousand's of an inch then in 1/10'000 of an inch working a lot in trigonometry using sine, co-sine of angles along with the hypotenuse of angles. In later years I worked in metric and learned to love the metric side of math and loving the metric side of things.

Inspeqtor wrote in post #19441383
I was a precision machinist in the tool & die trade for 52 years in the beginning working in thousand's of an inch then in 1/10'000 of an inch working a lot in trigonometry using sine, co-sine of angles along with the hypotenuse of angles. In later years I worked in metric and learned to love the metric side of math and loving the metric side of things.

Just a side note here on trigonometry, when I was a senior in high school I was getting D's in math with Algebra but then we went to Trigonometry, and I immediately got a A!!! It just all clicked in my little tiny brain.

Inspeqtor wrote in post #19441112
4km equals 2.485 miles

My calculator will covert length temperature, volume and more

OK, 319.2 feet less than 2.1/2 miles Charles

Pray tell, what is length temperature? Is it the length at a certain temperature or the temperature at a certain length (well, you started it )

Jonzjob wrote in post #19441414
Pray tell, what is length temperature? Is it the length at a certain temperature or the temperature at a certain length (well, you started it )

coefficient of linear expansion John ??
seeing we are talking bridges - temperature has a very real effect on bridges - day and night.
We would monitor for expansion to ensure something - forgotten now.
I camped (literally) under the Leven River bridge for a night monitoring deflections and temperature.
It also was right next door to the sewer pump station and across the river from the settlement pond also next door to the chip (potatoes) factory - quite a mixture of scents
Sorry no pictures - that was before digital - SIGH.

Inspeqtor wrote in post #19441383
I was a precision machinist in the tool & die trade for 52 years in the beginning working in thousand's of an inch then in 1/10'000 of an inch working a lot in trigonometry using sine, co-sine of angles along with the hypotenuse of angles. In later years I worked in metric and learned to love the metric side of math and loving the metric side of things.

Just a side note here on trigonometry, when I was a senior in high school I was getting D's in math with Algebra but then we went to Trigonometry, and I immediately got a A!!! It just all clicked in my little tiny brain.

I can only empathise with you Charles - I found it easier to carry out calculations in metric but in real life I generally revert a mixture of imperial and metric - so getting the best of both worlds. Just an aside - have you tried spherical trig?

Jonzjob wrote in post #19441414
OK, 319.2 feet less than 2.1/2 miles Charles

Pray tell, what is length temperature? Is it the length at a certain temperature or the temperature at a certain length (well, you started it )

Don’t wind them up, John, or they’ll get out of their depth soon! And so will I.

avondale87 wrote in post #19441420
coefficient of linear expansion John ??
seeing we are talking bridges - temperature has a very real effect on bridges - day and night.
We would monitor for expansion to ensure something - forgotten now.
I camped (literally) under the Leven River bridge for a night monitoring deflections and temperature.
It also was right next door to the sewer pump station and across the river from the settlement pond also next door to the chip (potatoes) factory - quite a mixture of scents
Sorry no pictures - that was before digital - SIGH.

Coefficient of expansion, Richard, I never had to carry out serious calculations except for exams. But it is interesting to understand. Have you ever worked with Radian measure and grads etc:

Ray.Petri wrote in post #19441427

Inspeqtor wrote in post #19441383
I was a precision machinist in the tool & die trade for 52 years in the beginning working in thousand's of an inch then in 1/10'000 of an inch working a lot in trigonometry using sine, co-sine of angles along with the hypotenuse of angles. In later years I worked in metric and learned to love the metric side of math and loving the metric side of things.

Just a side note here on trigonometry, when I was a senior in high school I was getting D's in math with Algebra but then we went to Trigonometry, and I immediately got a A!!! It just all clicked in my little tiny brain.

I can only empathise with you Charles - I found it easier to carry out calculations in metric but in real life I generally revert a mixture of imperial and metric - so getting the best of both worlds. Just an aside - have you tried spherical trig?

Uuuhhh NO ain't never heard of spherical trig before.

Inspeqtor wrote in post #19441431
Uuuhhh NO ain't never heard of spherical trig before.

It's important for navigating long distances as the earth approximates a sphere.

GPS makes that simple now, so long as the programmers handle the eastern, western, northern, and southern hemispheres correctly. It's also still important for astronomy.

Inspeqtor wrote in post #19441431
Uuuhhh NO ain't never heard of spherical trig before.

Well, Charles, if you ain’t never ‘eard of it don’t worry about it or you’ll lose a bit more hair.

Capn Jack wrote in post #19441439
It's important for navigating long distances as the earth approximates a sphere.

GPS makes that simple now, so long as the programmers handle the eastern, western, northern, and southern hemispheres correctly. It's also still important for astronomy.

There we go then, Charles, the good Capn has summed it up nicely for you.
Thanks Capn.

Ray.Petri wrote in post #19442673

Inspeqtor wrote in post #19441431
Uuuhhh NO ain't never heard of spherical trig before.

Well, Charles, if you ain’t never ‘eard of it don’t worry about it or you’ll lose a bit more hair.

Capn Jack wrote in post #19441439
It's important for navigating long distances as the earth approximates a sphere.

GPS makes that simple now, so long as the programmers handle the eastern, western, northern, and southern hemispheres correctly. It's also still important for astronomy.

There we go then, Charles, the good Capn has summed it up nicely for you.
Thanks Capn.

Yes Ray!! I did see earlier what the good Capn did for me!!

Capn,

I was thinking I had said something to you and thanked you but I see now I never did, I am sorry 'bout that Capn!

Inspeqtor wrote in post #19442678
Yes Ray!! I did see earlier what the good Capn did for me!!

Capn,

I was thinking I had said something to you and thanked you but I see now I never did, I am sorry 'bout that Capn!

Just search great circle path plotting if you want to get confused, Charles.

Ray.Petri wrote in post #19441427
Just an aside - have you tried spherical trig?

Don’t wind them up, John, or they’ll get out of their depth soon! And so will I.

Coefficient of expansion, Richard, I never had to carry out serious calculations except for exams. But it is interesting to understand. Have you ever worked with Radian measure and grads etc:

Coefficient of expansion is a vital value to be factored in on some jobs.
I should find the photos that demonstrate what goes horribly wrong when ignored.

Ray we worked with spherical trig in astronomy, as Jack stated one of its uses.
And that was with 16 figure log tables. Interesting for those interested

Radians,grads - no.
Pure degrees 0 to 360. Not quadrants like USA.

Ray nothing is straight despite how it looks

I think time for a photo, we have digressed