Showing posts tagged diagram

#history #Titanic #diagram #ship

RMS Titanic, Fore Section, Circa 1912

Right click, open in new tab … to see extensive labelling.

There are all sort of treasures here, including a swimming pool and squash court. The working areas for ship navigation were along the top level.

By the staircase, you’ll notice the Marconi Room. It was from here that wireless telegraph ice warnings from the nearby Californian were cut off … to facilitate handling of the heavy volume of novelty passenger traffic via the new device. “Shut up Shut up I am working Cape Race!”

Later that night the traditional CQD distress call was sent, along with the newly approved SOS - the latter used officially for the first time during the sinking. The Chief Wireless officer died in the water later that night, but his second was a surviving witness to the events.

Diagram and text for two maps today … from: Titanic of the White Star Trio: Olympic, Titanic, Britannic; Thomas E Bonsall; 1987; W H Smith.

#history #Titanic #diagram #ship

RMS Titanic, Aft Section, Circa 1912

Right click, open in new tab … to see extensive labelling.

I think the ‘screening’ effect is from the original.

Key Details:

Along the Bottom:

Coal bunker; stokers and boiler; engine; turbine engine; fresh water tanks; propeller shaft. The steam turbine engine turned the centre prop, which acted directly on the rudder. Unlike the other two props, it could not be reversed, perhaps slowing the Titantic’s response to emergency actions when the iceberg was spotted. The ‘double bottom’ was not built far enough up the side of the hull to save the ship from the iceberg.

Along the Top:

Last night’s post - the First Class Smoking Room (for 1% males only) can be seen below the last (fourth, dummy) smoke stack.

The upstairs/downstairs array of accommodations for the various ‘classes’ can be seen by examining this diagram closely.

from: Titanic of the White Star Trio: Olympic, Titanic, Britannic; Thomas E Bonsall; 1987; W H Smith.

#titanic #navigation #history

Olympic and Titanic - Cross-section Circa 1911

Right click, open in new tab … to see more detail.

from: Titanic of the White Star Trio: Olympic, Titanic, Britannic; Thomas E Bonsall; 1987; W H Smith.

#railroad #Tehachapi #ushistory

Tehachapi Loop - Plan and Profile, circa 1900 (before computers)

Right click, open in new tab … for a larger version.

The map is above, and that line’s exaggerated profile is below.

Looking at the data along the bottom … the grade at ‘116 feet per mile’ is ‘getting up there’ … close to the limits of economical railroad operation … a 2% grade.

The curves and their degrees of curvature are shown as well.

Railways often lengthened the ‘run’ of their slopes to reduce the gradient to a value that would be economical to operate … day after day for decades (operating costs).

All those track loops are necessary to help engineer a smooth artificial inclined plane from the rough topography with as little tunneling, cutting, filling and bridging as possible (construction costs).

In some other cases, the ‘wheelage’ (wheel flange resistance on curves) is factored into the grade calculation … Why this matters … the wheel friction on the curved track makes the pulling harder so the grade seems even steeper to the pulling locomotives.

from: The Field Practices of Railway Location; Willard Beahan; 1904; Engineering News Publishing Co, New York.

#lighthouse #ocean

Constructional Details of Three Types of Lighthouse

Cross-sections through a caisson lighthouse, a rock lighthouse and a screw-pile light. These drawings show the structure of the house, position of the lanterns and dimensions in relation to the surrounding water. Note the solid proportions of the masonry. The base of the rock light structure is dovetailed into the live rock and the structure grows above it. The screw light, as the name indicates, is literally screwed into sand or coral. The caisson light’s base is sunk and fitted with concrete.

from: The Wonderful Story of the Sea; AC Hardy; c1950; Odhams Press, London.

#survey #cdnhistory #prairie

Survey System, ‘Canadian West’

from: The Province of Saskatchewan - Its development and opportunities (150pp); FH Kitto; 1919; Department of the Interior, Canada, Hon Arthur Meighen, Minister.

‘The unit of the survey is the township, being a quadrilateral area approximately 6 miles square containing 36 sections, each of 640 acres or 1 square mile, which on being divided into 4 equal parts gives the homestead ‘quarter section’ of 160 acres.

‘The lines bounding a township on the east and west sides are true meridians, and those on the north and south sides are chords of the parallels of latitude passing through the corners of the township. These ‘block’ townships are designated entirely by the numerical system and bear no individual names.

‘The Dominion Land system of survey is the most comprehensive in the world. It extends uniformily [sic] over the whole of the western prairies and is especially adaptable to a plains country

‘This has been carried out by the Surveyor-General of Canada with a staff of especially qualified Dominion Land Surveyors in the field and an office staff of draughtsmen and map makers, comprising the Topographical Surveys Branch of the Department of the Interior.’

» Crossing the Correction Lines … If you ever find yourself driving north or south along the ‘range lines’ (bold north/south orientation) … and the ‘country road’ (i.e. not a provincial highway) follows the original survey … Your car will perform a perfect ‘Crazy Ivan’ (one 90 degree turn, then a reverse 90 degree turn) to compensate for the narrowing of lines of longitude as they approach the poles.

Important credit » “As the federal government gained possession of the entire area now comprising the province before any surveys had been commenced” … they failed to give a ‘shout out’ to the First Nations, (and the Métis), and the buffalo herds they depended on … who had previously occupied these lands for centuries.

#mythology #Greek #Roman #Gods

Family Trees!

… not necessarily your traditional heterosexual, monogamous, nuclear families, with a dog and a cat …

from reprint: Handbook of World Mythology; 1935; AS Murray; Tudor, New York.

#home #building #carpentry

Wall Framing on Platform Construstion, circa 1967

from: Canadian Wood-Frame House Construction; Central Mortgage and Housing Corporation, Canada; 1967.

Build your house with lots of high quality Canadian lumber!

#ships #sailboat #history

from: The Engineers’ Illustrated Thesaurus; Herbert Herkimer; 1952; Chemical Publishing Co Inc, 212 Fifth Avenue, New York.

#ships #sailboat #history

from: The Engineers’ Illustrated Thesaurus; Herbert Herkimer; 1952; Chemical Publishing Co Inc, 212 Fifth Avenue, New York.