Let every go signal remind you that you do go farther with signal gasoline the signal oil program The signal oil company and your neighborhood signal dealer bring you another curious story by the whistler tonight Seescape and I know many things when I walk by night I know many strange tales many secrets hidden in the hearts of men and women who have stepped into the shadows Presently, I'll tell you the nameless terrors of which they dare not speak But first signal oil company wants to pass along this timely warning During 1943 according to the National Safety Council 97,800 persons were killed right here in America in accidents of the deaths caused by autos One out of five occurred when roads were wet or slippery one out of five when driver's vision was obscured Fortunately precautions can be taken to help prevent these two types of accidents For instance tires that are worn smooth tend to skid more readily But a deep heavy retread job the kind signal gasoline dealers are prepared to give your tires will restore their grip on the road Help you stop more quickly and if a worn windshield wiper is leaving streaks across your vision Signal gasoline dealers will install a fine new rain master blade while you wait So have your tire tread and your windshield wiper checked the next time you're at your neighborhood signal gasoline dealers You'll feel a lot better knowing your car is prepared for the wet weather driving ahead and it may help save a life possibly your own and now the Whistler The Atlantic coastline from the Gulf of St. Lawrence south to Cape Hatteras and beyond is a treacherous one An ever-present threat to the thousands of vessels which have for centuries moved in streams in and out of American ports And the keepers of the lighthouses there are men with an awful responsibility Men who must not only fight the peril of the storm but must battle continually against the loneliness and despair of their vigil It's not a very attractive life No Especially for a girl like Madeline Murray who six months ago came to live with her new husband Richard at their lighthouse On a rocky island off the coast of northern Maine. Good Lord. Let's listen to that wind Hear the wind Things have been quiet for too long Yeah, I got a strange feeling something's going to happen. I wish it would. Oh now Madeline. Well, I do Tell you I can't help it Richard So weary of the same old rocks and ocean I could almost scream In six months six long months. I know I know but I tried to tell you before we yes, you did Honest and aboveboard You said it would be lonely and cold and silent and I said it didn't matter That doesn't help me now Driving me crazy. I tell you I'm pleased Madeline. All right. All right. I'm sorry Like all the other times, but I've done everything I can yes what well for example Why didn't you go into Bangal for a vacation that time? I told you you were free to go and an Elizabeth would have been glad to have you I just didn't feel like going. Why it's just what you want. Don't ask me why Just didn't feel like going that's all Madeline. Look at me. You don't love me anymore. Do you know? Furthermore, I never did you can you can go if you want to Madeline I can't go Richard. I'm going crazy. I want to but I can't Why did you marry me? You want the truth? Yes All right, I can't go About to stay here for another year. I'll be longer than that The last place in the world they think of looking for me looking for you. What do you mean? Who the police? I killed a man Richard. Oh No, you couldn't I did you have to believe it and after I killed him I ran away I didn't know which way to turn Until you arrived on the scene with your light house. Who was it? Man, I loved one Murderous That's why I married you Richard Now what are you going to do about it? Why did you have to tell me? I don't care anymore. Do you want to stand matter of fact? I think the state prison has a lot of advantages over an acre of rock and a flock of seagulls. They'd hang you maybe Has its advantages too You'll find out very soon There's only one thing to do Madeline all right fine radio the police. They'll send me to prison Richard, but alas. I'll be free That's a laugh, isn't it? I'll be free of this rock You there's only one thing to do radio for the police to come and get her That's the law Richard to do otherwise would be to shelter a fugitive from justice That's what you're thinking is the long hours take away in the stillness of your bedroom You remember a lot of things now the night you wandered into the staghorn in six months ago and found her there at a Table looking as if she'd been crying and how you had tried to comfort her without much success until At last you had explained your lonely existence at the lighthouse It was a different story then wasn't it almost as if she'd suddenly got an idea She was interested then yes Infused about the paintings you brought to town the seascape you'd painted during the long Lonesome days there at the top of the point Remember how she said she was tired of the city and long to get away from it all just as you did And it didn't take her long Just two days to be exact before you were sailing back to the lighthouse with your new bride But that was six months ago Now you know the truth Madeleine is a murderous It's the next day the nor'easter hits with full fury But you hardly hear it as you sit and stare out of a window at the top of the tower Hello dear Madeleine please After all I'm the one who's going to prison I still can't believe it. Oh you will in time Now if you were a good husband you'd be bustling around the house arranging a going away party for me You're not going away. You mean didn't send the radio? No. No, I couldn't You love me. That's why isn't it? Isn't it? Go away will you? Certainly that's it. You couldn't dare to see me go You couldn't take it. All right, so I couldn't But nobody else will get you at least you'll be mine Fine Lord There's a man out there in a skiff. He won't last five minutes in that surf Waving an oar with that megaphone needs help Take the lead I Going down there maybe I can help that's it. He'll be okay in no time. Thanks Yeah, I'm okay. Yeah, he asked it on the couch. I gotta get these clothes off Cool Passed out better cover you up old man.  Did they hurt bad? What's the matter? I don't know. Yes. He's hurt pretty badly bad gas on the head. Give me the brandy He's chill to the bone Lucky though see seem to pick him up and toss him over the reef. That's it So warm him up in a jiffy What are you maddening you're shaking like a leaf? Can't be huh? What are you talking about? Not a coincidence not here? Must be a reason you know him. Yes Name is Adams Lake Adams He was with me on the night I killed a man Yes Madeline the night you killed a man was a night neither you nor Blake Adams will forget for a long time You're thinking now as Blake lies there unconscious of the afternoon the wire came from Maxie saying he was just passing through town Casually was just as if he hadn't run out on you as if nothing had ever happened Just as if he were looking up a dear old maiden aunt and when you told Blake about it You were glad you couldn't read your mind because it was full of murder the way to do it didn't come to you though Until Blake suggested you asked Maxie up to the apartment for a drink just for all time's sake Then it was as clear as a blueprint Maxie was strictly a one-drink man, but this time one would be enough Oh, it's natural you're wondering about Blake and how he came to crack up right on your doorstep It's been six hours now since Richard brought him in and you Madeline haven't left his side and he seems to be stirring Oh my head What happened Sit up Can't see who lucky to be here at all Here take a drink this and yes, I'm not exactly I'm surprised to see you Blake.  That's all maybe Maybe not Hope that's what they think. I don't know whether poor Maxie could stand a post mortem. Wait a minute. I Remember now you mix the drinks that day. Yeah, the glass with the red ring on the top I was to make sure he got it who examined him Doc Cranston. They treated him before for indigestion same symptoms same everything So you poison them in the drink I Sorry Couldn't figure out why you ran away That's funny. I didn't see you do it. You poured all of our martinis out of the same shaker the rollings and the glasses already went there Yeah, I Get it poison in the olives That's why you're here. You don't think it's because I like lighthouses. Do you tell me why you're here What happened get on the wrong street car or something? There's no use telling you baby. You wouldn't believe me. You try me and see Okay, here it is.  Mm-hmm. Why?  Come on. We're making it tough We were pretty good pals once after he ran out on you that time Are you trying to tell me? Yeah? I'm trying to tell you that I love you baby since way before you met him I tried to tell you a couple of times, but I guess I'm not the Charles Boye type. It's twice as hard Was all my fault like I couldn't see very well in those days I know I don't know what to say. I know I'm not much of a prize Madeline, but you could do like yeah This is on the square. What can I do to show you honest, baby? I'll do anything. This is another blind alley I'll die. It's not a blind alley, honey. It's a four-lane highway There's one thing you can do. What's that? You can kiss me You were listening to the whistler brought to you by your friend the signal oil company Marketers of famous signal gasoline your best buy today Remember to let every ghost signal remind you you do go farther with signal gasoline So Blake and Madeleine have found each other out in the lonely lighthouse off the coast of Maine And it doesn't seem to matter now that it took a murder to place their feet firmly on the four-lane highway Leading over the horizon Maxi's death doesn't matter to them now They only think of leaving a lighthouse in the cold gray ocean in Richard What about that? What about Richard the only other one who knows about Maxi? He just returned from a trip to the mainland for supplies and Madeleine greets him at the entrance of the lighthouse Well back on time. Hello Madeleine little anxious for you the panel so rough today anxious for me Prayed I wouldn't make it or that I would please don't Richard not today. Just being practical my dear Now if you'll excuse me, I'll change my clothes a minute, please Something I want to talk to you about stop Blake Adams. Oh, yeah, the patient How is he? He's almost well enough to go too bad. You seem to be quite fond of it. Yes, Richard I love him and I want to go with him what we haven't told you because we planned to simply take the boat some night While you were asleep you're out of your mind. You'd be picked up in a minute. They don't know about the murder Richard He died of natural causes Free I mean that the three of us are the only ones who know That's why I'm telling you we're going Worm turns a What was it you said a while ago? What am I going to do about it? You wouldn't go to the police now, would you? Though I'm holding the strings at last. I'm a little more important to you now Richard I love him. You've got to believe you don't know what love is You can take your choice Madeline Stay here with me or Hard to believe today that I cracked up right out there. It's just like a mill pine But they give Madeline. I don't know Maxi I guess forget it You know, we ought to take off tomorrow feeling pretty solid. What about Richard? I'll leave him here with his lighthouse I'll never miss it. I told him about us Doesn't want me to go so what what can he do? He could tell the police what really happened to Maxi. What? You mean he knows I told him about the night at the wreck. He says if I leave he'll go to the police How could I know you were coming? It's been the matter with her. I live to die. He couldn't testify against you, but Listen does he know you poisoned Maxi tell him how good He won't be suspicious of his coffee for instance What do you mean? Yeah It's a gamble, but we got a chance we need 24 hours Listen, it's about three hours from the dock on the mainland to the airport I got a pal over there with a plane we can make Miami in nine hours with luck and catch the clip at a Rio I'll leave tonight and get everything set up. I ought to be back here by 8 in the morning That's where you come in you mean Richard. Yeah You gave me some sleeping powder when I first got here. Is there any left? I think so it's in the medicine cabinet. Okay, you take care of his breakfast a good long dose Won't hurt him when he wakes up. We'll be halfway to Rio just one thing Don't give him too much. He's got to live And so all that night after Blake's departure Madeline thinks about the job She must do and of his strange interest in Richard's welfare the way he emphasized his warning about an overdose Richard must live he said why? Blake had never been so humanitarian No, Madeline you don't sleep much that night and it's about five o'clock in the morning when your eyes finally closed Suddenly you wake you jump into your robe and slippers. Yes. It's 7 30 and Richard's bed is empty Good morning, Richard. Oh Hello The door is missing our good patient is left or am I telling you anything? Are you sure? Yes? I'm sure Don't try and play innocent sweetheart. Just what have you got up your sleeve? Must have left after our talk yesterday. I I told him I was going to be Detained here. I see Well, he's been a grateful wretch sneaking off that way after I saved his life So you've decided to be a good wife after all a I'll fix your breath. I don't bother. I've had it What about course? No, thanks. I had a rotten night. I couldn't sleep a wink I'll leave you alone my dear. I'll be up at the light darling. I was hoping you'd have breakfast with me. Won't you? Oh Aren't we considerate? I'm sorry about everything Richard. You know, I could almost believe you. I didn't know you better No, it's so wrong Richard.  I want to tell you and if you're still bent on being the perfect wife You can mix me a bromide for this headache. Yes Richard right away As a sour taste of a different brand. I guess so Now About Blake He knows all about your your past. Yes. Are you sure of him? This Articles been torn off the front page can still make out the tips of the top headline go on look at it It said reward offered That suggests anything to you. I don't know. Oh sure are you that your little escapade is a dead issue He wouldn't do it. I know him. Oh, I don't know people do strange things for money Madeline For instance at this very moment. He could be telling some interesting things to the police. You got that paper. Yes What did the article say? Unfortunately, I hadn't got around to reading it Now wouldn't surprise me a great deal to discover you might be a bit hotter than you think Well, I think I'll go down take a short nap wake me at 10 will you It's almost nine and still no sign of Blake Madeline tries to shrug off the suspicion in her mind, but it's there to stay and it keeps growing growing growing And while Richard sleeps downstairs you paste the floor No, no, he wouldn't do that to you. But where is he what could keep him this long the double cross It must be yes, so why did he warn you against the overdose? Richard is precious to him. That's why they don't pay rewards on a rest They pay off on conviction and Richard knows enough to convict you Blake isn't coming back The next thing you will see is a boatload of police Yes, that's it the launch down at the landing your only chance Maybe you can make it before they get here You can just get to the mainland now to find your small pistol and slip it in your purse and now down to the launch But wait a minute, there's a boat coming in it's Blake and he's alone Lake I thought you take care of him. Yes. What's the matter? Snap out of the planes all fixed will be in Miami tonight cost me 500 bucks Wait a minute You're careful with the sleeping powder like I said is just like you said How did you say it? What do you mean? Why were you so interested in Richard's health? One murder rap is plenty in my league, baby Come on. We got to go. Wait a minute. I've been thinking like now. Wait a minute Something I found up in the house started me thinking I'll think on the way We haven't time to be standing around passing the time of day. Come on. Just a minute It was a newspaper with an article cut out about a reward. Where did you find that? I didn't you they're not offering a reward for you. There was something in it. I didn't want your husband to see Here look does this make you feel any better receipts for the charter plane and two reservations to Rio Does that look like a double cross? I don't know you're gonna believe me, but we can't stand here arguing I'll get my bed He's meeting us down the coast a few miles with a car. I thought it'd be safer Where Fishing boat, I guess Now it couldn't be fun Holy smoke For sure that's a coast guard What do you mean you thought you could lie your way out of it, didn't you? I'm straight, baby.  We won't make any difference to either of us that article and You're making a big mistake, baby. Just give me a minute and set up with your lines like you and your four-lane highway Oh, yeah, for this one. You're a lying rat Right under the nose of the coast guard Madeline will be back in just a moment with a strange ending of tonight's story Meantime, here's the answer to a question many drivers have asked Does motor oil have any effect on gasoline mileage? The answer is yes, definitely It's only logical that anything that helps your motor run better will also help it deliver more power from the gasoline it uses That's why the seven-way protection which solvent refining gives signal four-star motor oil is doubly important today You see because of solvent refining the latest most costly process known to oil engineers pure Paraffin based signal four-star motor oil has triple strength film that cleans the motor surfaces seals in power Retains its lubricating quality for longer miles and actually forms less carbon Best of all while you're enjoying this improved performance. You're profiting in two extra ways one in longer motor life and two in helping your gasoline go farther So make your next oil change a change to solvent refined signal four-star motor oil It's one of the famous go farther signal products featured by that lubrication specialist Whose permanent business is helping cars go farther your neighborhood signal gasoline dealers Now back to the whistler It was too bad that Madeline didn't wait a few seconds longer Or she would have saved herself a great deal of trouble and a long term in the penitentiary But that's the way Madeline always did things jump first and think after it That's why she ran away a few minutes after poor Maxi took the drink and died before anyone noticed that he had drunk The martini but had left the olive she had poisoned untouched And that's why she shot Blake before he had a chance to tell her that it was he the police wanted for Maxi's murder Yes, he had had the same idea that day and he put poison in Maxi's martini, too And that was the poison that killed him because it was in the drink itself You see he really loved Madeline and Maxi was the only one between them and the four lane highway Over the horizon and when at last the poisoning was discovered the poison traced and the reward offered for his apprehension Blake knew we'd have to run away that perhaps there in the lighthouse. She hadn't heard of it and would go with him That's why Richard had to live because after all it It wouldn't do to have a murder rap hanging over her head, too would it Next Monday at nine o'clock the signal oil program will bring you another strange tale by the whistler The signal oil program is broadcast for your entertainment by the signal oil company marketers of signals famous go farther gasoline and motor oil And by your neighborhood signal oil dealer who is at your service daily to keep your car running for the duration The signal oil program produced by george w ellen with story by vik pushner Music by wilbur hatch is transmitted to our troops overseas by the armed forces radio service Bob anderson speaking for your friend the signal oil company And suggesting once again that you let every go signal remind you that you do go farther With signal gasoline This is cbs the columbia broadcasting system


I have been discussing about the slope instability, discussed a lot about the infinite slopes different conditions starting from drain conditions to the slopes having seepage you know in the downward direction, upward direction parallel to the slope under partial submergence and the complete submergence of mostly dry sandy materials which was extended to the these situations where the water table is present and we have done detailed analysis to find out the factor of safety. These are the infinite slopes alright, now in most of the situations which we as geotechnical engineers deal with the slopes are of finite nature. So now all words I will be discussing about the analysis of finite slopes, you remember we had talked about what is the difference between the infinite slopes and the finite slopes and there we had talked about the material properties as a function of depth vary, they do not remain constant, state of stress does not remain constant infinite slopes as compared to the infinite slope where they remain constant, peculiar finite slopes could be embankments which you are making by compacting the soil mass for railway tracks, for highways, roadways, runways and so on, runways are normally not done on the embankments. But the finite slopes could be because of excavations mostly. So here we talk about two situations, one is the planar failure surface and the second one would be circular yes circular failure surface. So let us begin with our discussion on planar failure surface, these type of situations occur due to excavations and excavations the stratified soil deposit, what is the second characteristic? This is going to be the weakest plane parallel to the strata and this could be a combination of 2, 3 planar surfaces also, may be a combination of 2, 2, 3 planar surfaces alright. One of the examples of this type of situation would be if I consider a slope this is a natural soil mass alright, this is of inclination I and the backfill here is of I prime, this happens to be the slip surface, the planar slip surface alright of height H, so height is taken up to the top most point over here. The inclination of the slip surface is assumed to be as what theta always, now my question to you would be draw the free body diagram of the forces which are going to act on this, the easiest possible way would be drop a perpendicular from A and designate this as H, now you can compute W1 easily, W2 can also become computed, so basically I am writing this as W, so W is known clear, what are the other forces which are going to act on this, given a chance the entire soil mass or the slope would have a tendency to slide down and this is what is being protected by C and phi which is getting mobilized in the system. So, this is the first time I am writing C and phi which are getting mobilized, mobilization means the entire C and phi of the material is not going to be used against instability alright, certain fraction of this is going to be used, that means if I say that C mobilized is equal to C over factor of safety associated with cohesion and similarly if I say phi m is the mobilized friction angle which is equal to tan inverse tan phi over f of phi, so I am using two factor of safeties, one is the factor of safety for cohesion, another one is the factor of safety for friction, ideally fc should be equal to f phi okay, so we are going to talk about these type of situations subsequently, just to begin with let us show the force of acting over here, so this is the component of Cm, now Cm is going to act on surface BC, so multiplied by length of the BC the surface on which it is acting okay, so this is BC, what are the other forces acting on the system, there has to be a reaction, so this is the reaction let us say and what is the relationship between the action and the perpendicular if I draw over here, this is going to be phi m, now this friction angle mobilized is what is that we have computed from here, so factor of safety can be obtained, factor of safety can be utilized to find out what fraction of cohesion and friction is getting mobilized, now once this is done we know the W's, W can be computed okay, the only thing which we have to keep in mind is I can utilize this H and basically this is a function of H correct and H can be related to capital H and what else, I s theta, I prime will not come to the picture, so ultimately what is that we want to prove, we want to prove that this theta critical value is the one where the failure is going to take place, so if you compute this W will be equal to half into gamma into H into LBC, this is the one equation which I can obtain and the second equation could be, is there relationship between H and capital H, think, so H is also related to capital H in what way, H can be written as AB into sin of I minus theta, is this correct, check it out, if this angle is I minus theta, so this H is equal to AB into sin of I minus theta and what is capital H, AB into sin I, so these two expressions are going to help us in finding out the weight, is this correct, so what we have done, now we can relate H to H as H upon H equal to sin I minus theta over sin I and this can be expressed as H equal to, BC is known, I can draw this section on a graph paper, I can find out the length, otherwise also I can compute the weight of the block by plotting it on a piece of graph paper, that can also be done by graphically or by analytically you can obtain it like this, fine, now further what we have to do, let us complete the force diagram, so how the force diagram will look like, yes try to complete this, we have a component of the weight and then we have a reaction and this Cm into LBC is the cohesion force which is getting mobilized on the plane and this then becomes the R value, is this angle known, what is the value of this angle, we have discussed several times active condition this minus phi m prove it or check it out whether it is correct or not and what about the other included angle between the Cm value and the weight, Cm and the weight, what is the included angle, this is theta, this is 90 minus theta, what about the third angle, I can use this relationship to obtain what relationship between W, this is of ABC which we have obtained, so WABC divided by sin 90 plus phi m equal to what is the principle unknown, how much Cm is getting mobilized, I do not know, so I have to obtain C value phi value, I do not know even factor of safety sometime, so I have to assume and then go ahead, so this will be equal to Cm into LBC divided by sin of theta minus phi m, what is that I am going to get from here, I am going to get the value of Cm from here, so once you have got the value of Cm, how are you going to use this, any idea, this Cm if I correlate it with the factor of safety or stability number both ways, I will prefer to use the stability number over here, so what will be the value of stability number, Cm over gamma H, this is okay, just quickly compute what is the factor which we are going to get, this will be equal to 1 by 2 because of half gamma H square which is coming over there, so this will be equal to yes sin of I minus theta into sin of theta minus phi m, this whole thing divided by sin I into cos of phi m, alright, so this is the expression which we have obtained, now what is that you want to do by obtaining this function, you want maximum stability or you want minimum stability both the ways I can try, so suppose if I want to maximize this function, so what I will have to do, I will have to differentiate this with what, what is the principle unknown here, the principle unknown is the theta value, so that means this has to be maximized with respect to theta, so if you differentiate what is that you are going to get, theta will be equal to I plus phi m divided by 2, prove this, this is okay and this theta is normally written as theta failure, that means this is where the failure is going to take place and at failure what we can do is we can also assume that the value of phi is equal to phi m, the most critical condition that means the factor of safety becomes 1, so theta f is the slope of the critical failure surface or critical slip line is basically a geometrical you know manipulation which has been used to obtain the stability number here, I might be having different types of combination of the planar surface, so here this is 1, I can create a situation where you have a slope like this which again goes further and so on okay, this could be the typical critical surface, so what I am going to add is 1 ABC followed by another ABC, if it is a multi-layered system what is going to change the value of Cm and phi m, so there are 2 ways of doing this analysis either you average out the C and phi for different layers by using their thickness or if you want to be very precise then the slip surface should be passing through the each section and then ultimately what you have to do, you have to do piecewise computation of Cm into LBC which is acting on the base followed by the weights, choice is yours.