Design Problem Preliminaru Desi gn 



Poge no : 



76 cf/33 



CQiculQted by: J. R.lv. 



Checked by : 



R- .y. 



Date 



/6 Men 73 



/Revetment Design (coni.) 



Eq uofion for Volume of First UnderlQ L fer 



^^ [ z sine zsihe J L sine j 



Equation derived from preliminary 

 qeometrij of cross section on page S-66. 



E = crest elevation (H above ULV^) 



^ = thickness of armor lager iff) 



ff = thi'cJ<ness of first underlager (ft) 



Yf - yolume of first under layer per 

 ' ft. of structure (ft^) 



E quation for Volume of Core 



vt = i 



[AOi-E- -0— I {t.5 i-cotQ) 



Equation derived from pre l/m many 

 geometry of cross -sect ion on page 6-^6, 



8-78 



