{"id":7953,"date":"2024-04-15T02:52:51","date_gmt":"2024-04-15T02:52:51","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7953"},"modified":"2024-04-15T02:52:51","modified_gmt":"2024-04-15T02:52:51","slug":"if-an-ascending-gradient-of-1-in-50-meets-a-descending-gradient-of-1-in-50-the-length-of-summit-curve-for-a-stopping-sight-distance-of-80-m-will-be-a-zero-b-64m-c-80m-d-60m","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/if-an-ascending-gradient-of-1-in-50-meets-a-descending-gradient-of-1-in-50-the-length-of-summit-curve-for-a-stopping-sight-distance-of-80-m-will-be-a-zero-b-64m-c-80m-d-60m\/","title":{"rendered":"If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be A. zero B. 64m C. 80m D. 60m"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;zero&#8221; option2=&#8221;64m&#8221; option3=&#8221;80m&#8221; option4=&#8221;60m&#8221; correct=&#8221;option2&#8243;]<!--more--><\/p>\n<p>The correct answer is B. 64m.<\/p>\n<p>The length of a summit curve is calculated using the following formula:<\/p>\n<p>$L = \\frac{S_{sd}}{0.085} \\sqrt{\\frac{v^2}{g}}$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$L$ is the length of the summit curve in meters<\/li>\n<li>$S_{sd}$ is the stopping sight distance in meters<\/li>\n<li>$v$ is the design speed in kilometers per hour<\/li>\n<li>$g$ is the acceleration due to gravity in meters per second squared<\/li>\n<\/ul>\n<p>For a stopping sight distance of 80 m, a design speed of 80 km\/h, and an acceleration due to gravity of 9.81 m\/s^2, the length of the summit curve is:<\/p>\n<p>$L = \\frac{80}{0.085} \\sqrt{\\frac{80^2}{9.81}} = 64$ m<\/p>\n<p>Option A is incorrect because the length of a summit curve cannot be zero. Option C is incorrect because the stopping sight distance is 80 m, not 80 km. Option D is incorrect because the length of a summit curve is not 60 m.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;zero&#8221; option2=&#8221;64m&#8221; option3=&#8221;80m&#8221; option4=&#8221;60m&#8221; correct=&#8221;option2&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[652],"tags":[],"class_list":["post-7953","post","type-post","status-publish","format-standard","hentry","category-highway-engineering","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be A. zero B. 64m C. 80m D. 60m<\/title>\n<meta name=\"robots\" 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