viii. CONTENTS. 



CHAPTER VIII. TESTING OPERATIONS (Continued}. ,,;,,. 

 Tests of Wire and Fibrous Eopes Wire Testing 

 Metals at Abnormal Temperatures Testing of 

 Chains Tests for Hardness Shop Tests ... 250 



CHAPTER IX. THE TESTING OF STRUTS OR PILLARS. 

 The Strength of Pillars Methods used in 

 Testing Pillars and Struts 282 



CHAPTER X. GENERAL PHENOMENA EXHIBITED BY 



TEST PIECES UNDER VARYING CONDITIONS. 

 Forms of Test Pieces Similar Test Bars 

 Influence of Time Forms of Ends Unsym- 

 metrical Loading The Elastic Limit in Tension 

 Effect of Annealing 296 



CHAPTER XI. EXPERIMENTS ON THE EELATION OF 

 STRESS AND PERMANENT STRAIN, AND EEPEATED 

 STRESSES 317 



CHAPTER XII. THE TESTING OF VITREOUS MATERIALS 



AND OF TIMBER. 



Portland Cement : Sampling Fineness Tensile 

 Strength Crushing Strength Bedding Com- 

 pression Specimens Soundness Setting Pro- 

 perties. Concrete Stone Brick Timber ... 325 



CHAPTER XIII. STRENGTH PROPERTIES OF THE PRIN- 

 CIPAL MATERIALS OF CONSTRUCTION. 

 Classification of Iron and Steel Wrought Iron 

 Steel Cast Iron Malleable Cast Iron Copper 

 and its Alloys Aluminium Tin Lead Zinc 343 



EEEATA. 



Page 2, end of tenth line omit word " to." 

 ,, 19, last line should read S =f t =f c =f. 

 ,, 22, last line but three should read 



r= 7T0 G.T* 



,, 37, bottom formula at bottom of fifth column should be 



W.I 3 

 384 I ' 



. ,, 147, tenth line should be E= 12,880tons per square inch. 

 ,, 237, ninth line Deely should be Deeley. 



