LXVI. 



W. H. WARREN AND S. H. BARRACLOUGH. 



Fig. 4. 



ately and after an interval of several months (Table II.). A short 

 column of cement mortar 12 inches long and 6 inches by 6 inches 

 in section was tested in a similar manner (Table III.). A summary 

 of results is given in Tables IV. and V. 1 For purposes of com- 

 parison and to supply further information on the crushing strength 

 of brickwork, the results of testing brick columns at the Water- 

 town Arsenal. U.S.A., and also by the Institution of British 

 Architects are summarised in Tables VI. to IX. 



3. Transverse Tests. — The transverse tests of brick beams in 

 cement and in lime mortar were made in the same testing machine, 



1 May 8, 1901. — The following additional results have been obtained 

 since the paper was written : — 



No. 



X 



Age 

 days. 



33 

 35 



34 



Dimensions. 

 Inches. 



Mortar. 



Crushing load. 

 Tons. 



5L-4 x 9 x 9 

 13-3 ditto 

 52 ditto 



1 cement + 2 sand + 15% water 



ditto ditto 

 1 cement + 4 sand + 15% water 



69 



over 100 



65 



X 2 cracked at 40 tons, but carried 100 tons without breaking although 

 all four corners were cracked considerably. 



