Transactions . Scale, 6 Inches to 7 Scale, 7 Foot to 7 Inch. The* Norc/i o f England Institute, ofHmuig 1 1 + Sill Experience with retaining walls appears to show that theory considerably overestimates the magnitude ofthe pressure. As a rough rule, it may be taken that the pressure in poundsper square inch rarely, if ever, exceeds one-half of the depth ofthe shaft in feet. The President (Mr. J. H. Merivale), in proposing a vote ofthanks to Dr. Morrow, said that the formulae with which theyhad been familiar hitherto did not take the flanges into account. The vote of thanks
Transactions . Scale, 6 Inches to 7 Scale, 7 Foot to 7 Inch. The* Norc/i o f England Institute, ofHmuig 1 1 + Sill Experience with retaining walls appears to show that theory considerably overestimates the magnitude ofthe pressure. As a rough rule, it may be taken that the pressure in poundsper square inch rarely, if ever, exceeds one-half of the depth ofthe shaft in feet. The President (Mr. J. H. Merivale), in proposing a vote ofthanks to Dr. Morrow, said that the formulae with which theyhad been familiar hitherto did not take the flanges into account. The vote of thanks was cordially adopted. 104 TRANSACTIONS. THE NORTH OF ENGLAND INSTITUTE OF MININGAN
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