.... With regardtothefoundations of the bridge there wereoneor twopointsin the Paper whichwere notquite clear. H e was very much struck with the amount of carbonic acid in the air-chambesrhown by the diagram, but he now found it was mainly owing tothefactthatthere was noblow-out pipe. The waste air simply went out underneath...

..., and consequently towards theend of a shifttherewasan accumulation there of carbonic acid. In facttherewasfrequently 0.3 percent. by volume ofCO, in the air within the shield, when there was less than 0-1per cent. in the tunnel a few feet behind it. To remedy this, a pipe was passed through the back diaphragm...

... SHIELDS BENDS COMPRESSED AIR PURIFICATION DISEASES CARBONIC ACID TUNNELLING BRIDGES CAISSONS SINKING GRAVEL SHUTTERS SKIN FRICTION SETTING OUT SURVEYS UNDERGROUND SICKNESS ILLNESS HEALTH WORKERS BAKERLOO LINE BALLAST CONSTRUCTION SHAFTS THAMES ENGLAND GREENWICH...

...A H HAIGH © Thomas Telford and ICE 1902 PERRY SUBAQUEOUS UNDERWATER TUNNELLING GRAVEL RAILWAYS RIVERS TUNNELS SHAFTS SHIELDS IRON LININGS COMPRESSED AIR BENDS MACHINERY DISEASES SICKNESS ILLNESS CARBONIC ACID UNDERGROUND TUBES BAKERLOO LINE LONDON THAMES...

... FOUNDATIONS ARCHES STEEL RAILWAYS LOADS COMPRESSED AIR BENDS DISEASES JOINTS CARBONIC ACID TUNNELS STRESS WIND PRESSURE MASONRY BRACING ERECTION METHODS LOADS PIERS CHAMBERS STEELWORK ROCKS JACKS GLASGOW CLYDE SCOTLAND FITZROY NIAGARA CLIFTON ROCKHAMPTON UK...

... assure theAuthor,and also the members, that acareful analysis which had been made recently showed that the air in the lower part of the theatre at the con- clusion of a fairly full meeting contained 6 to 8 parts of carbon dioxide in 10,000, being thus, according to the Author s Table, superior even...

... GAS IMPURITIES HEATING FANS CARBON DIOXIDE TESTS CARBONIC ACID ROOMS Proceedings.] TUNNELS AND BUILDINGS. 63 Correspondence. Mr. A. S. E. ACKERMANX noticed'that the Author gavea for- Mr. Acker- mula for calculating the quantity of air required per minute to ventilate a tunnel...

...W W F PULLEN © Thomas Telford and ICE 1889 TAFF VALE RAILWAY COMPANY WATER SOFTENING FILTRATION APPARATUS LOCOMOTIVES RAILWAYS DOCKS STATIONS HARDNESS SCALE DEPOSITS LIME FILTERS STEAM HARD COMPOSITION CALCIUM SULPHATES IMPURITIES CALCIUM SULPHATE CARBONIC ACID...

... ENERGY COAL AMMONIA CARBONIC OXIDES GASEOUS BLAST COOLING TUBES 54 DISCUSSION ON GAS-PRODUCERS. DIinutes of Discussion. Sir Frederick Sir FREDERIBCRKAMWEPLrLes,ident,observed thatthe Paper Bram'Tell* dealt with a subject of the highest importance, viz., the economical use of fuel...

...W FOSTER; I L BELL; M TIDY; H E ARMSTRONG; W J DIBDIN; J A WANKLYN; SIR F BRAMWELL; J WEST; F LIVESEY; J E DOWSON; H L GREVILLE; H DAVEY; C WOODALL © Thomas Telford and ICE 1884 EXPERIMENTS COMPOSITION DISTILLATION DESTRUCTION COAL COKE GAS SULPHUR AMMONIA NITROGEN CARBONIC...

...J E DOWSON © Thomas Telford and ICE 1883 GAS POWER ENGINES PRODUCERS PRODUCTION GENERATORS TRIALS COAL ANALYSIS CARBONIC ACID COSTS MOTIVE FUEL BOILERS PLANT MANUFACTURE PROCESS MAKING EFFICIENCY ECONOMY .. . , , ,. . .. Papers.] DOWSON ON CHEAP GAS FOR NOTIVE POWER...

...H E JONES © Thomas Telford and ICE 1880 LONDON COMMERCIAL GAS COMPANY GAS PURIFICATION SULPHUR IMPURITIES LIME TESTS PURIFIERS CARBONIC ACID HYDROGEN SULPHIDES CONDENSATION NAPHTHA CONDENSERS AMMONIA SCRUBBERS OXIDES IRON METHODS GASWORKS COLOURS REMOVAL...

...G J MORRISON VENTILATION WORKING RAILWAYS TUNNELS FRESH AIR COMPOSITION IMPURITIES POLLUTION COMBUSTION CARBONIC ACID ARTIFICIAL NATURAL COAL COKE FANS SHAFTS MACHINES MACHINERY PROPERTIES ENGINES LOCOMOTIVES PNEUMATIC ROPES GASES STEAM FUEL OXIDES OXYGEN VAPOUR...

... ENGINES COMPRESSED AIR CARBONIC ACID FUEL ARTIFICIAL NATURAL EXTRACTION GASES VELOCITY IMPURITIES AIRWAYS VENTILATORS PRESSURE VALVES STEAM SCREENS METHODS LONG FRICTION EXTRACTION POWER 50 MINUTES OF PROCEEDINGS. Mr. V. G. BELLsaid Mr. Morrison, whohad gone toChina to construct...

...SIEMENS; B SAMUELSON; I L BELL; J T SMITH; G J SNELUS; E A COWPER; D FORBES; T WHITWELL © Thomas Telford and ICE 1872 FUEL ECONOMY BLAST FURNACES SMELTING IRON ORES REDUCTION CARBON CARBONIC HEAT TEMPERATURE PLANT ERECTION IRONWORKS CONSUMPTION METALS METALLURGY OXIDES...

...I L BELL © Thomas Telford and ICE 1872 FUEL ECONOMY BLAST FURNACES SMELTING IRON CONSUMPTION HEAT COMBUSTION PIG IRON CARBON CARBONIC ORES METALS GASES TEMPERATURE COKE COAL REDUCTION OXIDES METALLURGY IRONWORKS ACID ECONOMOYF FUEL IN THE IRON BLASFTURNACE. 111...

... was concerned, by examining shortlythe operation of iron smelting. 350 BLAST FURNACES. The Author had alluded to the introductionof air at the bodtom of theblast furnace. Thisgaverisetothe generation of an immense volume of carbonic oxide. The carbonic oxide of course was i n a n intensely heated state...

...G ROBERTSON MORTAR HYDRAULIC DOCKS THEORY PRACTICE CARBONATES LIME CARBONIC ACID SILICA ALUMINA SLAKING SETTING CEMENT STRENGTH PRODUCTION COSTS GRINDING IRON CALCINATION BLUE LIAS ABSORPTION LIMESTONE POZZOLANS OXIDES MASONRY CONSTRUCTION BLOCKS CONCRETE...

...A WRIGHT © Thomas Telford and ICE 1858 MINES MINING LIGHTS LIGHTING GAS ILLUMINATION CANDLES COSTS CONSUMPTION CARBONIC ACID BALLESWIDDEN CORNWALL UK INSTITUTION OF. CIVIL ENGINEERS. SESSION 1857-58. November 10, 1857. ROBERT STEPHENSON, M.P., President...

..., and usually contains about a thousandth part of carbonic- acid gas, with a t least one per cent. of aqueous vapour. I n every one hundred measures, or volumes of atmospheric air, thereare 21 volumes of oxygen, and 79 of nitrogen ; or in 100 parts, estimated by weight, there are 23 of the former and 77...