Table II.— COMPRESSION TEST, BRICK PIER No. 10 (Retested). 

 Age when tested = 520 days. 





Readings of Mirrors with 



Readings of Mirrors without 







Load 



distance rods. 







distance rods. 



Compn. 

 (A.-B.j 



Remarks 



in 



Tons. 



Front. 



Back. 



Mean 



Diff. A. 



Front. 



Back. 



Mean. 



Diff. B. 



per ton 





02 mm. 



•02 mm. 



01 mm. 



01 mm. 



•02 mm. 



02 mm. 



•01 mm. 



•01 mm. 



"01 mm. 



1 







6-90 



9-60 



16-50 



1-30 



8-00 



4-60 



12-60 



+0 08 



035 





4 



7-09 



10-71 



17 80 



51 



7-86 



478 



12-68 



-005 



0-28 



Average comp. 

 per ton = 



6 



722 



11-09 



18-31 



0-46 



7-86 



4-77 



1263 



+0*05 



0-20 



0-00241 mm. 



8 



7-39 



11-38 



18-77 



0-43 



7-86 



4 78 



12-68 



-004 



0-24 





10 



760 



11-60 



19-20 



0-42 



7-89 



4-75 



1264 



-0-03 



0-23 



Coefficient of 

 Elasticity 



12 



7-80 



11-82 



1962 



0-43 



7-89 



472 



12-61 



o-oo 



0-22 



= 1023 tons 

 per sq. inch. 



14 



7-96 



1209 



20-05 



0-43 



7 90 



4-71 



12-61 



-001 



0-22 





16 



813 



12-35 



20'48 



0-51 



7-90 



4-70 



12-60 



-001 



025 





18 



8-41 



12-58 



20-99 



0-43 



7-89 



4-70 



12-59 



-0 01 



0-22 





20 



8-61 



1281 



21-42 



0-48 



7*88 



4-70 



1258 



000 



0-24 





22 



8-82 



1308 



21-90 



0-45 



7-88 



4-70 



12-58 



+ 001 



022 





24 



9 04 



1331 



22-35 



045 



7-89 



4-70 



12-59 



-003 



0-24 





26 



922 



13-58 



22-80 



0-44 



7-87 



469 



1256 



-0 01 



022 





28 



9-44 



13-80 



23-24 



0-48 



7-87 



1 



468 



12-55 



-001 



0-24 





30 



9-67 



1405 



23 72 



0-44 



7-86 



468 



12-54 



-0 01 



022 





32 



9-80 



14-36 



24-16 



0-49 



7-88 



4-65 



12-53 



-002 



025 





34 



10-07 



14-58 



24-65 



0-44 



7-86 



4-65 



12-51 



-001 



0-22 





36 



10-29 



14-80 



25-09 



0-49 



7 86 



464- 



12-50 



00 



0-24 





38 



1049 



15 09 



25-58 



044 



7 88 



464 



12-50 



-00L 



22 





40 



10-69 



15-33 



26 02 



48 



, 7-87 



462 



12-49 



+ 001 



0-23 





42 



10-92 



15-58 



2650 



046 



7 88 



462 



12-50 



-0 02 



0-24 





44 



1114 



1582 



26-96 



0-47 



\ 7-87 



4-61 



12-48 



000 



0-23 





46 



1.1-32 



16-11 



27 43 



0-51 



| 7-88 



4 60 



12-48 



000 



0-26 





48 



11-59 



16-35 



27 94 



0-51 



1 7-88 



4-60 



12-48 



00 



25 





50 



11-83 



16 62 



28 45 



3-51 



! 7 89 



4-59 



12-48 



000 



0-26 





52 



1203 



1693 



28-96 



0-57 



7-90 



458 



12-48 



-0 01 



0-29 





54 



1231 



17-22 



29-53 



0-52 



• 7-89 



458 



12-47 



-0-02 



0-27 





56 



12 55 



17-50 



30-05 





! 7-89 



4-56 



12-45 















0-54 









-o-oi 



0-27 



| 



58 



12-79 



1780 1 30-59 



0-53 



| 7-89 



455 



12-41 



000 



0-27 



j 



60 



13 02 



18 10 



3112 





1 7-90 



4-54 



12-44 









