OCR Text |
Show l POWER PLANT INSIDE DAM. H Unique Houie Near Oaltlmort Con- strucUd Under Water. llnlllmore. Mil An absolutely Unique, power plant lias recently been completed nbout It miles below this city on tho I'atapsco river It Is built within a dnm and Is entirely under H water. It la tho first or Its kind ever H built, and rust much less than It would M liava It built In any other known wn H Tho dam Is StO foot Iouk, 40 text H thick at tho base and 16 V4 feet Mali Thu spillway Is 108 feet Ionic, but at present only 108 (eet of this distance m Is used fur liomlni? tho power plant j Tho dam Is of to enforced concrete, tho sbull bolna; IX Inches thick nt tho bottom and tapering to tn Inches at tho H Tho npran intends only half way down from the crown, tint remnlnlmc Hj down stream iKirtlon belna; entlrtly open and provided with windows by moans of which thu Interior Is light j d Tho shape of the apron Is siuh j that tho water Is thrown some Mill.' j distance away from the windows -' Tho part used by the power houm H Is 111 tod with a false relllnx hung. ni j feet from the Inside of the dam. so as H to protect the apparatus from an water that might seep through the H outer shell of the dam The dnm Is built of a fine and rich mixture, which was laid very wet Aside from this j n u precautions were taken to elliul I naki water The water Is fed to the turbines through steel plpea passlug throuih the upstream spillway shell, ami ills charged by draft tubes Into the baso j of the dam. dropping lato a well sunk some three feet txlow the river led The water isee thence b way of a channel constructed In the river bed out of the dam 1 be Intake la five and one-half feet below the treat of the slllway. so that the trash raoks are ko, clear of driftwood, etc |