DAVID A CAMPBELL
Real Estate Commission in West Chester, PA
License number
Pennsylvania RS180327L
Category
Real Estate Commission
Type
Real Estate Salesperson-Standard
Address
Address
West Chester, PA 19382
Personal information
See more information about DAVID A CAMPBELL at radaris.comName
Address
Phone
4 Laura Lynn Ln, Glen Mills, PA 19342
4905 Simmons Cir, Export, PA 15632
501 Walnut St APT 225, Reading, PA 19601
503 3Rd Ave, Jessup, PA 18434
Professional information
See more information about DAVID A CAMPBELL at trustoria.com
Roller Compacted Concrete Dam And Method Of Construction
Roller Compacted Concrete Dam And Method Of Construction
US Patent:
5788411, Aug 4, 1998
Filed:
Aug 8, 1996
Appl. No.:
8/694301
Inventors:
David B. Campbell - West Chester PA
Assignee:
Schnabel Engineering Associates Incorporated - Bethesda MD
International Classification:
E02B 702
US Classification:
405107
Abstract:
A roller compacted concrete (RCC) dam is formed from inverted T-shape face panels to produce a lower sloped profile and L-shape face panel to produce an upper vertical profile. The face panels have drain openings in their penetrating legs to communicate with drain fill lifts placed against the vertical rise of the face panels. RCC lifts are placed on the penetrating legs to lock the placement of these face panels. The drain openings provide terminal drainage for lift line seepage. The inverted T-shape face panel has both a protruding leg and a penetrating leg projecting into the RCC lift. The protruding leg is provided with a dowel for gripping and alignment that permits raising and lowering of the face panel and is received within a sleeve in the face panel therebelow.