Minutes of Proceedings of the Institution of Civil Engineers, Volume 64Institution of Civil Engineers, 1881 |
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Minutes of Proceedings of the Institution of Civil Engineers, Volume 47 Visualizzazione completa - 1877 |
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20 feet adopted angle Author average bolts bottom briquettes caisson canal carried cement cent centimetre centre channel clay coal cofferdam colliery concrete construction coping cost cubic yards curves cylinder depth diagonals docks driving electromotive force engine entrance excavation experiments explosion feet 6 inches feet long feet wide firedamp flanges formula foundation girder bridges Gothard tunnel gradients graving docks harbour head holes increased iron length load lock lower masonry metres miles millimetres Minutes of Proceedings Mont Blanc tunnel ordinary pier piles piston placed Plate Portland cement pressure Proceedings Inst pumps rails railway river rock rods seam secondary bracing shaft side Simplon Simplon tunnel South Wales span spring tides square inch steam steel strain surface temperature thick tidal basin timber tons tubbing tunnel valves ventilation vertical Vide Minutes Vignoles rails Wales walls weight weir width
Brani popolari
Pagina 22 - ... the art of directing the great sources of power in nature for the use and convenience of man, as the means of production and of traffic in states.
Pagina 277 - ... air pump causes the water to rise up the pipe * into the boiler t, thence up the pipe g as high as the dotted line u; after which heat being applied to the boiler by the furnace v, the hot water rises to the refrigeratory. About midway of the pipe g there is a stuffing box atone of their junctures to allow of the expansion and contraction of the metal by changes of temperature. The pipe g is shown as extending vertically through the brick chimney up to w, thence through the flue x to the...
Pagina 122 - The stonework below highwater mark is set in mortar, in the proportion of 1 part of cement to 1 part of sand ; and for all stonework above high-water mark the proportion is 1 part of cement to 2 parts of sand.
Pagina 340 - He was elected a Member of the Institution of Civil Engineers on the 6th of December, 1864, and he died at Weymouth, after a few days' illness, on the 2nd of February, 1881.
Pagina 210 - Eiga timber. It was far better to start by using good timber that could be put to a useful purpose, either by selling it afterwards or using it on the work. In many cases a good deal of the contractor's timber, if of the right quality, might be allowed by the engineer to be used instead of new on the work under his supervision. Mr. Meyer had stated that the life of the timber used in constructions like the railway gantries was ten years at the outside ; at any rate after that period it would be very...
Pagina 49 - ... by the action of the falling cage, the weights are successively lifted, and the descent of the cage is thus checked by degrees until it is brought to rest in the shaft. Another plan, intended to accomplish the same result, has been applied in connection with two cages, having a balance-rope passing from the bottom of one cage to the bottom of the other. The tops of the two cages are connected by a pair of side-ropes ; these pass over pulleys resting on spring-pedestals, which are set on the pit-head...
Pagina 164 - ... set" of the pile was invariably much less than that observed on the cessation of driving, the fall of the ram being the same. This result is to be accounted for in a great measure by the fact that...
Pagina 308 - ... position of an obstruction to a running stream best calculated to withstand its force. It also follows from the tendency of the river to sort its stones into sizes, that if boulders are piled in any given part of a river-bed, of an average weight exceeding the weight of the stones that the river has left there in its ordinary course, it will be beyond the power of the river to move the stones so placed. The erecting of earth embankments to confine the overflow of the South Rangitata was tried...
Pagina 405 - It thus appears there are few circumstances in which the steam carriages are to be preferred. A separate carriage on a main line will weigh about 8 tons, and will accommodate 40 persons if constructed as lightly as possible. If then the maximum number of passengers per train is less than 40, the steam-carriage may bo preferable, but it should not have more than four wheels. It was stated before that an ordinary light railway engine will make full use of its adhesion only at a speed of 12 kilometres...
Pagina 361 - October. per head. The total supply, filtered and unfiltered, was 8,556,025 gallons, or 20 gallons per head per day; it is, however, proposed to double the supply of filtered water to 16,000,000 gallons, or 37-2 gallons per head per day. (The average supply in large towns in England is 25 gallons per head.) The total solid impurities in October are 11-30 parts in every 100,000 parts of water, and in May 21 • 68.