{"id":100662,"date":"2020-09-11T08:13:45","date_gmt":"2020-09-11T12:13:45","guid":{"rendered":"https:\/\/sjcivil.com\/?p=100662"},"modified":"2024-03-30T05:44:52","modified_gmt":"2024-03-30T09:44:52","slug":"an-hours-not-an-hour-and-its-certainly-not-a-day","status":"publish","type":"post","link":"https:\/\/sjcivil.com\/an-hours-not-an-hour-and-its-certainly-not-a-day\/","title":{"rendered":"An Hour\u2019s not an Hour, and it\u2019s Certainly not a Day"},"content":{"rendered":"<h3 id=\"h-executive-summary\"><strong>Executive Summary<\/strong><\/h3>\n<p>There are differences in an hour: a manhour, a crewhour, a 50-minute hour. And an hour\u2019s not a day, so there is another calculation for a manday. Here is a quick explanation of these estimating terms.<\/p>\n<p><iframe loading=\"lazy\" style=\"border-radius: 12px;\" src=\"https:\/\/open.spotify.com\/embed\/episode\/3Fz0ZmkICayLaTPtF3wYGl?utm_source=generator\" width=\"100%\" height=\"152\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h3 id=\"h-definitions\"><strong>Definitions<\/strong><\/h3>\n<p>There are several ways to estimate the cost of construction work. Most heavy\/civil companies estimate based off of manhours per unit or units per manhour. Here are the layman definitions:<\/p>\n<ul>\n<li><a href=\"https:\/\/sjcivil.com\/terms\/#m\">Manhour<\/a>\u00a0\u2013 one person working one hour.<\/li>\n<li><a href=\"https:\/\/sjcivil.com\/terms\/#c\">Crewhour<\/a>\u00a0\u2013 the entire crew working for one hour.<\/li>\n<\/ul>\n<p>Common to the trucking industry is a 50-minute hour. It is a measure of trucking efficiency. Some trucking companies calculate haul time figuring that their trucks are only working 50 minutes out of the hour \u2013 this is, in essence, saying that their trucking is 83% efficient:<\/p>\n<ul>\n<li><a href=\"https:\/\/sjcivil.com\/terms\/#0\">50-minute hour<\/a>\u00a0\u2013 a common trucking unit of measure that assumes 10 minutes of each hour is non-productive.<\/li>\n<\/ul>\n<p>Lastly, is a day. Also commonly known as a shift. Here\u2019s a layman\u2019s definition:<\/p>\n<ul>\n<li><a href=\"https:\/\/sjcivil.com\/terms\/#m\">Manday<\/a>\u00a0\u2013 one person working one shift.<\/li>\n<\/ul>\n<h3 id=\"h-examples-calculations\"><strong>Examples &amp; Calculations<\/strong><\/h3>\n<div class=\"eds-animate  \" data-eds-entry-animation=\"rotateIn\" data-eds-entry-delay=\"0\" data-eds-entry-duration=\"0.5\" data-eds-entry-timing=\"linear\" data-eds-exit-animation=\"\" data-eds-exit-delay=\"\" data-eds-exit-duration=\"\" data-eds-exit-timing=\"\" data-eds-repeat-count=\"1\" data-eds-keep=\"yes\" data-eds-animate-on=\"hover\" data-eds-scroll-offset=\"\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-101790 size-large\" src=\"https:\/\/sjcivil.com\/wp-content\/uploads\/2020\/09\/sandy-millar-yvpexJFLTSU-unsplash-1024x683.jpg\" alt=\"\" width=\"1024\" height=\"683\" srcset=\"https:\/\/sjcivil.com\/wp-content\/uploads\/2020\/09\/sandy-millar-yvpexJFLTSU-unsplash-980x653.jpg 980w, https:\/\/sjcivil.com\/wp-content\/uploads\/2020\/09\/sandy-millar-yvpexJFLTSU-unsplash-480x320.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p>For this example, assume that a workday is considered 8 hours:<\/p>\n<ul>\n<li><a href=\"https:\/\/sjcivil.com\/terms\/#o\">One day<\/a>\u00a0= one shift = 8 hours.<\/li>\n<\/ul>\n<p>And, as an example, we have a two-person crew working 1.5 days (say, Monday and half of Tuesday):<\/p>\n<ul>\n<li>Manhours: 2 people work 8 hours each on Monday and then together they work half a day on Tuesday: 2 people on Monday * 8 hours is 16 manhours + 2 people work from 7am to 11am the next day is 2 people * 4 hours is 8 manhours. Total manhours = 16 manhours + 8\u00a0<a href=\"https:\/\/sjcivil.com\/\">manhours<\/a>\u00a0= 24 manhours.<\/li>\n<li>Crewhours: the crew above worked all day Monday, so that equates to the crew working as a crew for 8 hours on Monday. The crew, together as a crew, worked 4 hours on Tuesday. Total crewhours = 8 crewhours on Monday + 4 crewhours on Tuesday = 12\u00a0<a href=\"https:\/\/sjcivil.com\/\">crewhours<\/a>.<\/li>\n<li>Mandays: 2 people worked on Monday, that was 2 people working all day, or 2 mandays. These two people came in on Tuesday and worked half a day which is 2 each half days, which is 1 full manday. Total mandays = 2 mandays on Monday + 1\u00a0<a href=\"https:\/\/sjcivil.com\/\">manday<\/a>\u00a0on Tuesday = 3 mandays.<\/li>\n<\/ul>\n<h3 id=\"h-my-story\"><strong>My Story<\/strong><\/h3>\n<p>I deal with this regularly. I deal with this in claims work and in training. The concept is simple one, but often times those new to the world of estimating need a helping hand with understanding the terms. Knowing these production rates as an estimator will make you a best of class estimator. The data can be easy to capture, but it takes discipline in capturing the data \u2013 whether your sit in your truck and watch a crew produce, or you ask your site management to gather manhours worked and the product installed (which need to be counted and recorded).<\/p>\n<h4 id=\"h-work-safe\"><strong>Work Safe!<\/strong><\/h4>\n<p>&nbsp;<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/sjcivil.com\/wp-content\/uploads\/2020\/09\/2020.09.11-An-hours-not-an-hour.pdf\" class=\"su-button su-button-style-flat\" style=\"color:#FFFFFF;background-color:#293a57;border-color:#212f46;border-radius:12px;-moz-border-radius:12px;-webkit-border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6a768a;border-radius:12px;-moz-border-radius:12px;-webkit-border-radius:12px;text-shadow:none;-moz-text-shadow:none;-webkit-text-shadow:none\"> Download The PDF<\/span><\/a><\/div>\n<span class=\"et_bloom_bottom_trigger\"><\/span>","protected":false},"excerpt":{"rendered":"<p>Executive Summary There are differences in an hour: a manhour, a crewhour, a 50-minute hour. And an hour\u2019s not a day, so there is another calculation for a manday. Here is a quick explanation of these estimating terms. Definitions There are several ways to estimate the cost of construction work. Most heavy\/civil companies estimate based [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":104658,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","iawp_total_views":40,"footnotes":""},"categories":[109,50,38],"tags":[673,674,675,676,59,279,677,678,70,679,680,681,682,248,683,684,48],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>An Hour\u2019s not an Hour, and it\u2019s Certainly not a Day<\/title>\n<meta name=\"description\" content=\"There are differences in an hour: a manhour, a crewhour, and a 50-minute hour. 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