{"id":6325,"date":"2024-04-15T02:27:07","date_gmt":"2024-04-15T02:27:07","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=6325"},"modified":"2024-04-15T02:27:07","modified_gmt":"2024-04-15T02:27:07","slug":"the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/","title":{"rendered":"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a982b56c4675\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    0\u00c2\u00b0                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    30\u00c2\u00b0                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    60\u00c2\u00b0                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    90\u00c2\u00b0                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is $\\boxed{\\text{B}}$, 30\u00c2\u00b0.<\/p>\n<p>A skew back is a backfill or retaining wall that is built at an angle to the horizontal. It is used to support the weight of the earth and prevent it from sliding down. The angle between the skew back and the horizontal is typically kept at 30\u00c2\u00b0. This is because this angle provides the most stability for the structure.<\/p>\n<p>If the angle is too small, the skew back will not be able to support the weight of the earth and it will collapse. If the angle is too large, the skew back will be unstable and it will also collapse.<\/p>\n<p>Therefore, the angle between the skew back and the horizontal is kept at 30\u00c2\u00b0 to provide the most stability for the structure.<\/p>\n<p>Here are some additional details about each option:<\/p>\n<ul>\n<li>Option A: 0\u00c2\u00b0. This is not a possible angle for a skew back. If the angle were 0\u00c2\u00b0, the skew back would be vertical and it would not be able to support the weight of <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> the earth.<\/li>\n<li>Option B: 30\u00c2\u00b0. This is the correct answer. The angle between the skew back and the horizontal is typically kept at 30\u00c2\u00b0.<\/li>\n<li>Option C: 60\u00c2\u00b0. This is not a possible angle for a skew back. If the angle were 60\u00c2\u00b0, the skew back would be unstable and it would <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> collapse.<\/li>\n<li>Option D: 90\u00c2\u00b0. This is not a possible angle for a skew back. If the angle were 90\u00c2\u00b0, the skew back would be horizontal and it would not be able to support the weight of the earth.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[643],"tags":[],"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>The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0\" \/>\n<meta property=\"og:description\" content=\"Join Our Telegram Channel Subscribe on YouTube\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T02:27:07+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/","og_locale":"en_US","og_type":"article","og_title":"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0","og_description":"Join Our Telegram Channel Subscribe on YouTube","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T02:27:07+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/","name":"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T02:27:07+00:00","dateModified":"2024-04-15T02:27:07+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-angle-between-skew-back-of-a-flat-arch-and-the-horizontal-is-kept-approximately-equal-to-a-0a-b-30a-c-60a-d-90a\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Civil engineering","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/civil-engineering\/"},{"@type":"ListItem","position":4,"name":"Building construction","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/civil-engineering\/building-construction\/"},{"@type":"ListItem","position":5,"name":"The angle between skew back of a flat arch and the horizontal, is kept approximately equal to A. 0\u00c2\u00b0 B. 30\u00c2\u00b0 C. 60\u00c2\u00b0 D. 90\u00c2\u00b0"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/6325"}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=6325"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/6325\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=6325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=6325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=6325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}