Criteria for Hydraulic Fills (1962) / Chapter Skim
Currently Skimming:
Pages 15-26
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 15... ...
Page 1 6 Supp l emen ta ry I nfo rma t i on PROPOSED F I LL S 1 . 0 SO I L I NVE ST I GAT I ON The s o i l i nves t i ga tion s hou l d p rov i de i nforma t i on on the phys i ca l cond i t i on of the s i te a s we l l a s of the fi l l mate r i a l p ropos ed .
|
From page 16... ...
Page 1 7 Supp l ementa ry I nforma t i on for a t ho rough s o i l i nves t i ga t i on . Se i sm i c act i v i ty i n t he a rea req u i res ca re i n dea l i ng w i t h l oos e , sa t u ra ted , coa rs e-g ra i ned ma te r i a l s , e i the r i n na t u ra l unde r l y i ng so i l s or i n p l acement of hyd rau l i c f i l l s , s i nce the re i s a potent i a l dan ge r of l i quefact i on of so i l s w i th a dens i ty l es s t han t he c r i t i ca l dens i ty .
|
From page 17... ...
Pa ge 1 8 Supp l ementa ry I nforma tion weak or comp res s i b l e s o i l s to rock or ve ry dens e ha rd soi l . Th i s bo ring s hou l d be l oca ted whe re comp ressib l e ma te r i a l i s l i ke l y to exis t ; it s hou l d a l so ref l ect con d i t i ons in the a rea of heav i est l oads .
|
From page 18... ...
Pa ge 1 9 Supp l ementa ry I nforma t i on these s o i l s . When f i ne-g ra i ned s o i l s s amp l ed i n acco rdance w i th t he ASTM D 1 587-58T t h i n-wa l l ed tube s amp l i ng p rocedu re 1 have , o r appea r i n the f i e l d to have , an unconf i ned comp res s i ve s t rength of l es s than 3 , 000 psf; und i s tu rbed so i l s amp l es s hou l d be ob ta i ned for l abo ra to ry s t reng t h tes t s .
|
From page 19... ...
Pa ge 20 S upp l emen ta ry I nforma t i on I f t he f i l l i s 1 0 fee t or l es s i n t h i ckness and the d ry dens i ty i s a t l eas t 90 percen t of the maximum obta i nab l e in t he ASTM D 1 55 7-58T 1 compact i on tes t , conso l i da t i on tes ts a re unneces sa ry , as on l y l i mi ted set t l emen t w i l l occu r .
|
From page 20... ...
Page 2 1 Supp l ement a ry I nforma t i on When t he sett l ement ant i c i pated i s 1 2 i nches or mo re , s e r i ous p rob lems w i th regard to s o i l s t rength a re a l so l i ke l y . I n s uch cases , f i e l d measu remen ts of po re-wate r p res s u res are requ i red .
|
From page 21... ...
Pa ge 22 Supp l emen ta ry I nforma t i on pos s i b i l i t i es of l oad i ng and potent i a l changes i n s o i l and g round wa te r cond i t i ons, dur i ng cons t ruct i on and the l i fe of t he f i l l and s t r uctures t hereon , s hou l d be p rov i ded fo r t he comp l eted f i l l . An added factor of safety i s requ i red when the fa i l ure zone i nc l udes s t ruc t u res , s t reet s , uti l i t i es, o r othe r s uch i mp rovements ra ther than on l y ya rd o.r pa rk a reas.
|
From page 22... ...
Pa ge 23 Supp l ementa ry I n forma t i on fa i l u re unde r a founda t i on i s requ i red t han fo r a s l ope fa i l u re ; one reas on i s t hat l oca l i r regu l a r i ty i n t he s o i l can con t r i bute s i gn i f i ca n t l y to dec reased bea r i ng capac i ty , but s uch l oca l or sma l l a reas of wea k soi l s do not se r i ous l y cont r i bute to s l ope stab i l i t y p rob l ems . U t i l i za t i on of i nd i v i dua l wa te r-s upp l y or s ewa ge-d i sposa l systems s hou l d be cons i de red on l y afte r the i mp ra c t i cab i l i ty of pub l i c or commun i ty sewe rage fac i l i t i es i s estab l i s hed .
|
From page 23... ...
Pa ge 24 S upp l ementa ry I nforma t i on t he comp res s i b l e s o i l s ( f i l l and unde r l ying ex i s t i ng) i s requ i red .
|
From page 24... ...
Pa ge 25 S upp l emen ta ry I n fo rma t i on Du r i ng f i l l p l acemen t , t he g ra da t i on of f i l l ma te r i a l s hou l d be de te rm i ned . Seg rega t i on f rom t he end of t he d i s cha rge p i pe s hou l d be avo i ded .
|
From page 25... ...
Pa ge 26 S upp l ementa ry I n fo rma t i on conso l i dat i on i s the meas u re of when const ruct i on of st ructures can safe l y p roceed . Ex i st i ng f i l l s hou l d be accepted on l y when a comp rehens i ve i nvest i gat i on i nd i ca tes adequacy for the p roj ect .
|
From page 26... ...
Page 2 7 APP END I X A HOW THE STUDY WAS CONDUCTED The Bu i l d i ng Resea rch Adv i sory Boa rd has conducted th i s s tudy of C r i te r i a for Hyd rau l i c F i l l s by appo i n t i ng and u s i ng i n a work i ng s ense a h i gh l y qua l i f i ed Spec i a l Adv i so ry Comm i t tee . Th i s Comm i t tee wa s composed of au thor i t i es on the va r i ous techn i ca l a spec ts of the p rob l em .
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.