 Thus intrenched and secure, 33 men may be made to carry on an excavation which is 630 feet superficial area, in regular order and uniform quantities, with as much facility and safety as if one drift only of 19 feet square was to be opened by one man....  The Edinburgh Philosophical Journal - Page 2661824Full view - About this book
 | Science - 1824 - 428 pages
...forward, and so much of the brick-work added to the body of the tunnel. Thus entrenched and secure, 83 men may carry on an excavation which is 630 feet superficial...proposed, it is not intended that the progress should exceed the rate of 3 feet per day, because the work should proceed with mechanical uniformity in all... | |
 | 1824 - 452 pages
...Tunnel. Thus intrenched and secure, thirty-six men may be made to carry on an excavation which is 700 feet superficial area, in regular order and uniform...of 19 feet square was to be opened by one man. The declivity of the roadway of the Tunnel under the river, will not exceed three feet per hundred feet... | |
 | Perry Fairfax Nursey - Industrial arts - 1825 - 508 pages
...the brick- work added to the body of the tunnel. Thus intrenched and secure, 33 men may be made to carry on an excavation which is 630 feet superficial...only of 19 feet square was to be opened by one man. 1 The drift carried under the Thames in 1809, which was about the size of these cells, and was excavated... | |
 | Thames tunnel - 1825 - 42 pages
...may be made to carry on an excavation which is 630 feet superficial area, in regular order, and in uniform quantities, with as much facility and safety as if one drift only of 19 feet square were to be opened by one man. Should nothing unforeseen prevent it, this novel 8 communication is expected... | |
 | Encyclopedias and dictionaries - 1832 - 624 pages
...so much of the brick-work added to the body of the tunnel. Thus entrenched and secure, thirty-three men may carry on an excavation which is 630 feet superficial...likewise by only one man, proceeded at the rate of from four to ten feet per day. In the plan now proposed, it is not intended that the progress should exceed... | |
 | Encyclopedias and dictionaries - 1832 - 636 pages
...630 feet superficial area, in regular order and uniform quantities, with as much facility and safely as if one drift only of 19 feet square was to be opened...likewise by only one man, proceeded at the rate of from four to ten feet per day. In the plan now proposed, it is not intended that the progress should exceed... | |
 | Physics - 1823 - 518 pages
...of the brick-work added to the body of the Tunnel. Thus intrenched and secure, 33 men may be made to carry on an excavation which is 630 feet superficial...proposed, it is not intended that the progress should exceed 3 feet per day, because the work should proceed with mechanical uniformity in all the points... | |
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