140 



W. H. WARREN. SOME APPLICATIONS OF THE 



Summary of Stresses. 











DEAD LOAD. 1 > „, 



O el 



CO c 



81 . 















ess . 

 ■0 | S 



CO »^ 



re o 

 re o"- 5 

 g~<~ 



Stresses obtained by Graphic Method. 



& ?• o 



00"° X 



£ CD O 



si s 





Stress due to Load at 



« CO 



a «•> 



C DO 



i- 



= CO 



.s 1 1 



'E'OB 



XI 











OS s- 



j re *j 





Sag 



o c c 

 0«— « 





1 



2 



3 



4 



5 



6 



7 



23 45 



20-03 



1673 



1339 



10-05 



6-70 



3-39 



93-74 



9333 



9353 



74-82 



18-48 



168-35 



2 



23-45 



20-03 



1673 



13-39 



10-05 



6-70 



3-39 



93-74 



93-33 



93 53 



74-82 



18-48 



168-35 



3 



10-11 



20-03 



21-96 



17-60 



1316 



8-79 



4-47 



'96 12 



95-63 



95-88 



7670 



19-18 



17258 



4 



7-40 



14-63 



21-96 



20-85 



15-60 



10*41 



526 



96-11 



9560 



95-85 



76-68 



18-67 



172 53 



5 



5-26 



1041 



1560 



20-85 



21-96 



14-63 



7-40 



96-11 



9560 



95-85 



76-68 



18-67 



17253 



6 



4-47 



8-79 



1316 



17-60 



21-96 



20-03 



10-11 



96-12 



95-63 



95-88 



76-70 



1918 



172-58 



7 



3-39 



6-70 



10-05 



1339 



16-73 



2003 



23-45 



93-74 



9333 



9353 



74-82 



18-48 



168-35 



8 



339 



6-70 



10-05 



1339 



1673 



20-03 



23-45 



9374 



93-33 



9353 



74-82 



18-48 



168-35 



Zl 



26-45 



22-61 



18-89 



15-10 



11-33 



7-57 



3-82 



105-77 



106-38 



10608 



84-86 



20-86 



19094 



2 



11-40 



22-61 



18-89 



15-10 



11-33 



7-57 



3-82 



90-72 



90-81 



90-77 



72-62 



18-00 



163-35 



3 



7-48 



14-80 



1693 



13-55 



10-14 



6-77 



3-45 



73-12 



73-31 



73-22 



58-58 



14-66 



131-80 



4 



5-31 



10-55 



1577 



17-80 



13-31 



8-89 



4-55 



7618 



76-38 



76-28 



61-02 



15-46 



137-30 



5 



4-55 



8-89 



13-31 



17-80 



15-77 



10-55 



531 



76-18 



7ti-38 



76-28 



61-02 



1546 



137-30 



6 



3-45 



6-77 



10-14 



13-55 



16-93 



14-80 



7'48 



73-12 



73-31 



73-22 



58-58 



14-66 



13180 



7 



3-82 



7-57 



11-33 



1510 



18-89 



2261 



11-40 



90-72 



90-81 



90-77 



72-62 



18-00 



16335 



8 



3-82 



7-57 



11-33 



1510 



18-89 



22-61 



26-45 



105-77 



106-38 



106 08 



84-86 



20*86 



190-94 



VI 



14-00 















14-00 



14-00 



14-00 



11-25 



9-86 



25-25 



2 



7-05 



14 : 00 



6 : 21 



5 : 00 



3-76 



2 : 50 



1 : 28 



39-80 



39 75 



39-77 



31-82 



11-20 



71-59 



3 



2-88 



5-67 



14-00 



437 



3'30 



2-20 



1-10 



3352 



33-47 



33-49 



26-79 



10-94 



60-28 



4 



2-57 



5-06 



7-62 



14-00 



7-62 



5-06 



2-57 



44-50 



44-17 



44-33 



3546 



11-31 



7979 



5 



1-10 



2-20 



330 



4-37 



14-00 



5-67 



2-88 



33-52 



33-47 



33-49 



26-79 



10-94 



60-28 



6 



1-28 



2 -.50 



3-76 



5-00 



621 



14-00 



7-05 



39-80 



39-75 



3977 



31-82 



11-20 



71-59 



7 







. . • 









14-00 



1400 



14-00 



1400 



11-25 



9-86 



25-25 



Y2 



15-09 















15-09 



15-14 



15-12 



12-10 



1056 



2722 



3 



395 



7 : 82 













11-77 



11-77 



11-77 



9-42 



6-12 



21-19 



4 



333 



6-58 



9 : 92 











1983 



19 64 



19-74 



1579 



8-18 



3553 



5 



1-35 



2-66 



4-10 



5 : 45 









13-56 



13-67 



1362 



10-90 



462 



24-52 



6 



1-65 



3-26 



4-90 



655 



8 : 10 







24-46 



24-31 



24-38 



19-50 



613 



43-88 



7 







. . * 





... 





15-09 



15-09 



1514 



15-12 



12-10 



10-56 



27-22 



8 



... 







... 



... 



7 ; 82 



3-95 



11-77 



11-77 



11-77 



9-42 



612 



2119 



9 









9-92 



6-58 



3-33 



19-83 



19-64 



19-74 



15-79 



8-18 



35-53 



10 









5-45 



4-10 



2-66 



1-35 



1356 



13-67 



1367 



1090 



4-62 



24-52 



11 







8 : 10 



655 



4-90 



326 



1-65 



24 46 



2431 



24-38 



19-50 



613 



43-88 



The stresses in structures (such as those designed by engineers 

 which are non-deformable) depend upon their form and dimensions 

 and are independent of the material of which they are composed 

 so that the foregoing example might have been given for an iron 

 bridge, only that the diagonals in an iron bridge are fixed while 

 those in the Cowra bridge are incapable of withstanding tension 

 as they merely rest in pockets and are wedged up to enable them 

 to withstand compression. 



In proportioning the areas of the various parts of the structure 

 to resist the stresses developed in them it is necessary to know 

 exactly the manner in which the material (which it is intended to 

 use) will behave under the stresses referred to, i.e., its strength 

 and elasticity, and in order that the various joints and connections 

 thould not cease to fulfil their functions efficiently, it is necessary 

 so allow for the shrinkage of the material. 



