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.,� ' : `* _ ,r.'.4 hrt:�- -. to speak for full-scale projects,"
<br /> ' -- - . " ?_2 •.� 1-64%' comments William Dinchak, ircc-
<br /> for of energy and 4 # - �,._ - _ -, gY water resources
<br /> • 4 -r+' . , ;4 • Arg
<br /> t•'- :-Y ` #' •- =: {; '-.e for the Portland Cement Associa-
<br /> ..- +>;4 =`., `.:� - y' r.: : lion, Skokie, ill. "There have been a
<br /> "'-= '•,` =f` x. �t a. number of them built now and many
<br /> ;*w-7-7 ,;; �� ''i= =� _ Y a, more are on the drawing board. '•''.'. • s_ . r ' .-: -1y•.`"1 _ ki .r •- -; . � Adds Ernest chrader, formerly a•.. ,F. t : • _ d�- U�i1' .�• ' �, ..�J 1• , _, f with the Corps' Walla Walla, Wash.,•
<br /> .� IIpli � � Ip'r I/ District and now a consultant, "To-
<br /> ` _- ;:t, -l' - - z..,-,ti,�.. Y-. r *-,:--. ! impossible to keep
<br /> -..c., �- ;-�±,,'- '=' _=i.. . -r -#'ri !Fi1` `F L day, it's about
<br /> } - y_ •=- J of all the places worldwide
<br /> t.�' y7 ,-.....;: "-:"�: •sr � '- track f a
<br /> r - , :r _:�. �- � ;" ,....4.,
<br /> where it is being used."
<br /> AL.� _, -7-7;."7.:•:;/'-'-'----.77-377;71-1� ; RCC was used to develop a major
<br /> ' - r� .. . „ 4,:-Y_ � ' ; �� ., -- ti,� gravity dam project in Austin, Tex.,
<br /> *ice• -_ ”' , • .....•-,� .,-_ t.- in late 1983 an
<br /> 4.-i& . ;. ��� - yam..,-•-y• and early 1984. The
<br /> .. , `` 's - ,• ----w� '.' 2%1 _ -•_r r North Loop Business Park
<br /> '; -- :. >-y0,,_.:„ _�-- ��,V,ir Stormwater
<br /> .�.- .° - ._ +•••- -� Ater Detention Dams were
<br /> •L ti -► ti r •'I. .,_ b
<br /> e..+t_ �`;• - _- . .. -_.:;...7.---,r `
<br /> _- - ; ,.:., constructed by H.$. Zach 1. Co..
<br /> - ' r~1 "�® San Antonio, Tex., under a 51.8 mil-
<br /> H.B. Zachr', C:.• 5a° r■.^.;p^io, Tex., was r e main con:raC.•or for wor+ on the North
<br /> Loop Busing;; S;err^.,at?r Delp ;,on Dams. lion contract with the Tramell Crow
<br /> Development Co., Austin, Tex.
<br /> Freese & Nichols, Inc., Fort Worth,
<br /> its required consistency. RCC must 430,000 cubic Yar�s of lean concrete Tex., designed the structure.
<br /> be dry enou_h to support the weight fill which was contained by precast These two structures are 1.600 and
<br /> of vibrator.. equipment but wet concrete panels on the vertical up- 1 200 fee[ long, 32 feet or less to
<br /> enough to permit adequate distribu- stream face. This X14 million project height, and have precast concrete
<br /> Lion of the paste binder throw,hout was built by Eucon Corp., Tri Cit- facing panels on the downstream
<br /> the mass during the mixing and con- ies, WaSh. surface of the dams to form planter
<br /> solidation process. For %Villow Creek, RCC was boxes. They required a total of ap-
<br /> The concept of RCC for dams spread by 16-cubic-yard scrapers. proximately 21,000 cubic yards of
<br /> had its start in the late 1960s when it Bulldozers positioned it into I-foot RCC.
<br /> was assumed that an increase in lifts and vibratory rollers compacted The dams, which are keyed into
<br /> shear strength of the cement- it in four passes. rock about 8 feet below grade, were
<br /> enriched, granular fill materials constructed of RCC placed in 10-
<br /> would result in significant reduction The construction of the Willow inch lifts. Each lift was compacted
<br /> of the darn cross section as corn- Creek Dam kicked off the market so continued
<br /> •
<br /> pared with a typical embankment .«,7,... ,- —,
<br /> dam. The concrete could b -.. —AL.,.' :��- Yvr " .� ;�-- .: ,� ,. ,,. :rte
<br /> e e e trans- :.=±� ,;Y.-=•. :� ��.-' - `_ �'. �,:
<br /> ported by truck spread by dozers ti ': : '�` s T- ��-
<br /> and compacted by vibratory roller. ''} '` ` • ,-� ti;�„r-rti1,,Y, -_ j
<br /> Initial development work on RCC - xi,- f��� "�--_ -_„r
<br /> was conducted by the Tennessee Val- � =' '?. "9
<br /> ley Authority and the ars � � T" ---'? r "rs� ,..
<br /> e .army p ,.,4 _. •: � .•.
<br /> Of Engineers in the early 1970s. - ?�. _ .r:T Y s`_' �� ;r. 3 '-:-- •-43n
<br /> In 1978 the Army Corps of En i- J� _ �' ;_,•;,..- _ - - -�- '' '"'
<br /> veers used 16,?00 cubic yards of `, _- "- - _.� _' ",.'-'"7'? =y'x
<br /> RCC in construction of a 5-foot ' `+_ - F -
<br /> thick by - ��_r7' _ `;-•',;; .•..r. -- •-
<br /> y long sill block "�
<br /> the end of a floodway on its Chena `'- w '- - -_:--..•,,-.r.,-,...' - a.y.• - -� .
<br /> River Project, Alaska Standard a._* �+ r r, .11,� - - t-••�� +� .-;"--#!--7i•-'37--.--_"j--'
<br /> earth moving and compacting V-,.....„,'• -- ; _: :: _,�,� , z
<br /> tom actin ti • ---` r-�. ,'. �:>= `=,�� ..:
<br /> equipment, a �' r,rcr.tiur.al concrete " ' `-' •.:..� _ "=- - `- ...;.F� ==_` �".v
<br /> batch plant and a ''e!I graded sandy - x , - - ' � 4 '�'�'A
<br /> feria usually �` r' •',,_:•_:-�. 2:0-7,
<br /> fill material specified for • '..-..:�. "--••- �'r'_ ..,_ :._,.
<br /> transition zone in at. c nh _ � :. '�=' r- -_... ---:1;,:;-,•:.,•-•i-.,:-.".----x,7``. .'.
<br /> dam were utill...:. `!Mi _� 1 ~� --2. • -Y,��� -- •-,
<br /> The Willow e uti Creek i)am crm ` ``'_ • `%'t i . ' :z .y .' ., _ ;Fy^c �-?ti: ; 11.
<br /> ♦a--.. - ��-'`'��. _, ri I V'tr - M Y. ti
<br /> pleted In 19J� ;'.tar }1C�(net. Ore., s' .� i 'Y'� Mi,,.,,trf !� • -e-_-..
<br /> was the first concrete dam bunt .rich }` . `� •_
<br /> RCC by the Corps of Engineers and - - -•; - - At +ec - `r : :. -- _, --
<br /> the first RCC dam built in this coun- - � j `
<br /> First concrete dam built with RCC in the United States was the Willow Creek Dam
<br /> try. This 1,780-foot, 169 foot high near 1-1innner, Ore., completed in 1982. The project was constructed by Eucon
<br /> structure required approximately Corp • Tr: C,rres, Wash.
<br /> COn,mvcfv,n O.. i! -- Ac-^,us. 1, I:u
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