{"id":6709,"date":"2026-03-26T13:20:15","date_gmt":"2026-03-26T12:20:15","guid":{"rendered":"https:\/\/tevipa.com\/blog\/?p=6709"},"modified":"2026-03-30T21:38:47","modified_gmt":"2026-03-30T19:38:47","slug":"casual-jacket-block","status":"publish","type":"post","link":"https:\/\/tevipa.com\/blog\/en\/casual-jacket-block\/","title":{"rendered":"Casual jacket block"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png\" alt=\"Logo C\u00f3mo Cubrir un Cuerpo\" class=\"wp-image-6\" style=\"width:270px;height:auto\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png 512w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-300x300.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-150x150.png 150w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n\n<h1 class=\"wp-block-heading has-text-align-center\">Casual Jacket Block<br>Drafting<\/h1>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-1024x576.png\" alt=\"Different jacket types with base pattern overlay\" class=\"wp-image-6880\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/cazadoras-imagenes-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">The casual jacket: definition and block foundation<\/h2>\n\n\n\n<p class=\"text-justify\">The casual jacket is one of the most versatile garments in contemporary wardrobes. Short, functional, and seemingly simple in construction, it actually relies on a very precise drafting logic that allows it to adapt to multiple styles, ages, and body types.<\/p>\n\n\n\n<p class=\"text-justify\">In this article, we focus exclusively on its foundation: the pattern drafting. With just a few well-chosen measurements and a clear nomenclature, you can build a solid structure from which to develop any variation, from the most classic to the most informal.<\/p>\n\n\n\n<p class=\"text-justify\">This content forms part of a complete system: theoretical foundation and practical application.<\/p>\n\n\n\n<p class=\"text-justify\">Here you will find the required measurements and the key points of the system clearly organized, so you can follow it, understand it, and reproduce it with precision.<\/p>\n\n\n\n<p class=\"text-justify\">With this system, you can draft any casual jacket based primarily on the chest circumference, complemented by a small number of additional measurements such as sleeve length and back length.<\/p>\n\n\n\n<p class=\"text-justify\">In the following articles, we will develop the classification of casual jackets, ease allowances, adaptation to different body types, and pattern grading.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_e0b043-ed .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_e0b043-ed .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_e0b043-ed\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Measurements and proportions<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-1024x576.png\" alt=\"Body measurements and patternmaking formulas for jacket base pattern\" class=\"wp-image-6887\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/Mediddas_1-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">In this section, we analyze the measurements required to draft the casual jacket.<\/p>\n\n\n\n<p class=\"text-justify\">We also explain how to derive them from the half chest circumference.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Body measurements<\/strong><\/h3>\n\n\n\n<p class=\"text-justify\">You take these directly on the client\u2019s body. In many cases, you only take the ones you cannot derive.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_0deb02-35 .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_0deb02-35 .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_0deb02-35\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Body<\/strong><\/h4>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Half chest circumference<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-1024x576.jpg\" alt=\"Measuring half chest circumference on body for jacket base pattern\" class=\"wp-image-6939\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_p-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\">The half chest circumference<\/a> defines the main measurement and the sizing reference for the casual jacket.<br>You need this measurement.<\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Armhole length<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-1024x576.jpg\" alt=\"Measuring armhole depth on body for jacket base pattern\" class=\"wp-image-6904\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ls-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\">Click on this link to see how to take the armhole length measurement<\/a>.<\/p>\n\n\n\n<p class=\"text-justify\">You can derive this measurement. We calculate it based on the half chest circumference.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>L<\/mi><mi>S<\/mi><mo>=<\/mo><mfrac><mi>P<\/mi><mn>4<\/mn><\/mfrac><mo>+<\/mo><mn>11<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">LS = \\frac{P}{4} + 11<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\"><em>\u201cLS\u201d defines the armhole length and \u201cp\u201d defines the chest measurement (half chest circumference).<\/em><\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Back length<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-1024x576.jpg\" alt=\"Measuring back length on body for jacket base pattern\" class=\"wp-image-6911\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lbe-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\">Click on this link to see how to take the back length measurement<\/a>.<\/p>\n\n\n\n<p class=\"text-justify\">You cannot derive this measurement, so you must take it from the client or use a size table.<\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Total length<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--1024x576.jpg\" alt=\"Measuring total garment length on body for jacket base pattern\" class=\"wp-image-6917\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_lt--1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">The total length of the casual jacket can range from the waist (equal to the back length) to the hip.<\/p>\n\n\n\n<p class=\"text-justify\">If you do not have the client\u2019s hip length, you can calculate it.<\/p>\n\n\n\n<p class=\"text-justify\">The rise crotch approximately equals the armhole length, since both correspond roughly to the height of one head in classical body proportions.<\/p>\n\n\n\n<p class=\"text-justify\">If the hip sits at two thirds of the rise crotch:<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>L<\/mi><mi>T<\/mi><mo>=<\/mo><mi>L<\/mi><mi>B<\/mi><mi>E<\/mi><mo>+<\/mo><mfrac><mrow><mn>2<\/mn><mi>L<\/mi><mi>S<\/mi><\/mrow><mn>3<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">LT = LBE + \\frac{2 LS}{3}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\"><em>\u201cLBE\u201d defines the back length and \u201cLS\u201d defines the armhole length.<\/em><\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_2be249-97 .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_2be249-97 .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_2be249-97\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Back width<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-1024x576.jpg\" alt=\"Measuring back width on body for jacket base pattern\" class=\"wp-image-6923\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ae-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/anatomia-medidas-cuerpo-humano#Medidas\">Click on this link to see how to take this measurement<\/a>.<\/p>\n\n\n\n<p class=\"text-justify\">You should derive this measurement:<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>A<\/mi><mi>E<\/mi><mo>=<\/mo><mfrac><mi>P<\/mi><mn>4<\/mn><\/mfrac><mo>+<\/mo><mn>8<\/mn><mo>+<\/mo><msub><mi>h<\/mi><mrow><mi>A<\/mi><mi>E<\/mi><\/mrow><\/msub><mo>+<\/mo><mn>1<\/mn><mi>c<\/mi><mi>o<\/mi><mi>s<\/mi><mi>t<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">AE = \\frac{P}{4} + 8 + h_{AE} + 1cost<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\"><em>\u201cAE\u201d defines the back width; \u201chAE\u201d defines the back width ease; \u201ccost\u201d defines the seam allowance value; and \u201cp\u201d defines the chest measurement.<\/em><\/p>\n\n\n\n<p class=\"text-justify\"><em>In this case, seam allowances equal one centimeter, so the value corresponds to the multiplier.<\/em><\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Armhole rectangle width<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-1024x576.jpg\" alt=\"Measuring armhole rectangle width on body for jacket pattern\" class=\"wp-image-6932\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ars-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/anatomia-medidas-cuerpo-humano#Medidas\">Click on this link to see how to take the Armhole rectangle width<\/a>.<\/p>\n\n\n\n<p class=\"text-justify\">The ARS (armhole rectangle width) defines the portion of the body circumference occupied by the arm.&nbsp;<\/p>\n\n\n\n<p class=\"text-justify\">The ease may include seams or not.<\/p>\n\n\n\n<p class=\"text-justify\">You should derive this measurement instead of measuring it<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><mo>=<\/mo><mfrac><mi>P<\/mi><mn>4<\/mn><\/mfrac><mo>+<\/mo><msub><mi>h<\/mi><mrow><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><\/mrow><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">ARS = \\frac{P}{4} + h_{ARS}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\"><em>\u201cARS\u201d defines the armhole rectangle width; \u201chARS\u201d defines the ease; and \u201cp\u201d defines the chest measurement.<\/em><\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Front width<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-1024x576.jpg\" alt=\"Measuring front width on body for jacket base pattern\" class=\"wp-image-6895\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_ad-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#Measurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/anatomia-medidas-cuerpo-humano#Medidas\">Click on this link to see how to take the front width measurement<\/a>.<\/p>\n\n\n\n<p class=\"text-justify\">For garments outside classic tailoring, such as the casual jacket, you should derive this measurement<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>A<\/mi><mi>D<\/mi><mo>=<\/mo><mfrac><mrow><mn>2<\/mn><mi>P<\/mi><\/mrow><mn>5<\/mn><\/mfrac><mo>+<\/mo><msub><mi>h<\/mi><mrow><mi>A<\/mi><mi>D<\/mi><\/mrow><\/msub><mo>+<\/mo><mtext>cost<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">AD = \\frac{2P}{5} + h_{AD} + \\text{cost}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\"><em>\u201cAD\u201d defines the front width; \u201chAD\u201d defines the ease; \u201ccost\u201d defines the seam allowance value; and \u201cp\u201d defines the chest measurement.<\/em><\/p>\n\n\n\n<p class=\"text-justify\"><em>In this case, seam allowances equal one centimeter.<\/em><\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_864145-a1 .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_864145-a1 .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_864145-a1\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Arm<\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">You can take arm measurements from the spine or from the acromion.<\/p>\n\n\n\n<p class=\"text-justify\">If you take them from the spine, subtract the back width and apply the result from the sleeve heeel.<\/p>\n\n\n\n<p class=\"text-justify\">If you take them from the <a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#InternalStructure\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#InternalStructure\">acromion<\/a>, apply them from the acromion line and add 1 cm due to the sleeve cap seam. In the video at the end of this blog, we use arm measurements taken from the acromion.<\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Elbow length (from back or acromion)<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-1024x576.jpg\" alt=\"Measuring elbow length on body for jacket base pattern\" class=\"wp-image-6951\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_codo-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\">Click on this link to see how to take the elbow length from the acromion<\/a><\/p>\n\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/anatomia-medidas-cuerpo-humano#MedidasSuperior\">Click on this link to see how to take the elbow length from the spine<\/a><\/p>\n\n\n\n<p class=\"text-justify\">You cannot derive this measurement.<\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Cuff length (from back or acromion)<\/strong><\/h5>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-1024x576.jpg\" alt=\"Measuring sleeve length to wrist on body for jacket base pattern\" class=\"wp-image-6958\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/med_puno-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\">Click on this link to see how to take the cuff length from the acromion<\/a><\/p>\n\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\">Click on this link to see how to take the cuff length from the spine<\/a><\/p>\n\n\n\n<p class=\"text-justify\">You cannot derive this measurement.<\/p>\n\n\n\n<h5 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Cuff width<\/strong>.<\/h5>\n\n\n\n<p class=\"text-justify\"><a href=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\" type=\"link\" id=\"https:\/\/tevipa.com\/blog\/en\/anatomy-body-measurements-pattern-making#UpperMeasurements\">Click on the link to see how to take the cuff width measurement<\/a>.\u00a0<\/p>\n\n\n\n<p class=\"text-justify\">You can obtain the cuff width from the half circumference of the closed cuff or by adding ease to the wrist half circumference.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_4498e9-0c .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_4498e9-0c .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_4498e9-0c\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Technical construction measurements<\/strong><\/h3>\n\n\n\n<p class=\"text-justify\">You derive these from the previous measurements and from parts of the body drafting.<\/p>\n\n\n\n<p class=\"text-justify\">You use them to draft the sleeve pattern.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Armhole depth<\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The armhole depth defines the vertical diameter of the armhole once sewn. You calculate it on the body pattern.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Sleeve rectangle width<\/strong>.<\/h4>\n\n\n\n<p class=\"text-justify\">The sleeve rectangle width defines the maximum width of the sleeve construction lines.<\/p>\n\n\n\n<p class=\"text-justify\">It equals the armhole rectangle width plus one tenth of either the armhole circumference or the chest circumference, plus two centimeters of seam allowance..<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>A<\/mi><mi>R<\/mi><mi>M<\/mi><mo>=<\/mo><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><mo>+<\/mo><mfrac><mi>P<\/mi><mn>10<\/mn><\/mfrac><mo>+<\/mo><mn>2<\/mn><mtext>cost<\/mtext><mo separator=\"true\">;<\/mo><mspace width=\"1em\"><\/mspace><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><mo>=<\/mo><mfrac><mi>P<\/mi><mn>4<\/mn><\/mfrac><mo>+<\/mo><msub><mi>h<\/mi><mrow><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><\/mrow><\/msub><mspace width=\"0.2778em\"><\/mspace><mo stretchy=\"false\">\u27f9<\/mo><mspace width=\"0.2778em\"><\/mspace><\/mrow><annotation encoding=\"application\/x-tex\">ARM = ARS + \\frac{P}{10} + 2\\text{cost}; \\quad ARS = \\frac{P}{4} + h_{ARS} \\implies<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>A<\/mi><mi>R<\/mi><mi>M<\/mi><mo>=<\/mo><mfrac><mrow><mn>7<\/mn><mi>P<\/mi><\/mrow><mn>20<\/mn><\/mfrac><mo>+<\/mo><msub><mi>h<\/mi><mrow><mi>A<\/mi><mi>R<\/mi><mi>S<\/mi><\/mrow><\/msub><mo>+<\/mo><mn>2<\/mn><mtext>cost<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">ARM = \\frac{7P}{20} + h_{ARS} + 2\\text{cost}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\">The direct calculation uses seven twentieths of the chest measurement, plus the armhole rectangle ease and two centimeters of seam allowance.<\/p>\n\n\n\n<p class=\"text-justify\">\u201cARM\u201d defines the sleeve rectangle width; \u201cARS\u201d defines the armhole rectangle width; \u201ccost\u201d defines the seam allowance; \u201chARS\u201d defines the ease; and \u201cp\u201d defines the chest measurement.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_db7310-82 .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_db7310-82 .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_db7310-82\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Casual jacket pattern nomenclature<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-1024x576.jpg\" alt=\"Basic jacket pattern pieces with reference lines and overall structure\" class=\"wp-image-6801\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_01-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Construction lines<\/strong><\/h3>\n\n\n\n<p class=\"text-justify\">We divide this section into three groups: <strong>horizontal construction lines<\/strong>, <strong>vertical construction lines<\/strong>, and the <strong>oblique line<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Horizontal construction lines<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-1024x576.jpg\" alt=\"Horizontal lines H1 to H8 in basic jacket pattern with structural references\" class=\"wp-image-6807\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_02_LLHH-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">H1 &#8211; Construction line of the seventh cervical vertebra<\/li>\n\n\n\n<li class=\"text-justify\">H2 &#8211; Armhole construction line<\/li>\n\n\n\n<li class=\"text-justify\">H3 &#8211; Waist construction line<\/li>\n\n\n\n<li class=\"text-justify\">H4 &#8211; Hem or bottom construction line<\/li>\n\n\n\n<li class=\"text-justify\">H5 &#8211; Apex or acromion construction line<\/li>\n\n\n\n<li class=\"text-justify\">H6 &#8211; Elbow construction line<\/li>\n\n\n\n<li class=\"text-justify\">H7 &#8211; Hem or bottom construction line<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Vertical construction lines<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-1024x576.jpg\" alt=\"Vertical lines V1 to V7 in basic jacket pattern with structural axes\" class=\"wp-image-6813\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_03_LLVV-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">V1 &#8211; Center back construction line<\/li>\n\n\n\n<li>V2 &#8211; Side panel construction line<\/li>\n\n\n\n<li>V3 &#8211; Side panel advance line<\/li>\n\n\n\n<li>V4 &#8211; Center front construction line<\/li>\n\n\n\n<li>V5 &#8211; Elbow construction line<\/li>\n\n\n\n<li>V6 &#8211; Sleeve center construction line<\/li>\n\n\n\n<li class=\"text-justify\">V7 &#8211; Elbow advance line<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Oblique construction line<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-1024x576.jpg\" alt=\"Oblique line O1 in basic jacket pattern used as construction reference\" class=\"wp-image-6819\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_04_LO-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">O1 &#8211; Louis construction line<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Seams, lines, and grainlines of the pattern pieces<\/strong>\u00a0 \u00a0<\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-1024x576.jpg\" alt=\"Jacket pattern pieces with seams construction lines and grainlines identified\" class=\"wp-image-6825\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_05_lINpATR-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">We will divide this section into the back piece, which contains all the points beginning with <strong>E<\/strong>; the front piece, which contains all the points beginning with <strong>D<\/strong>; the upper sleeve piece, which contains all the points beginning with <strong>C<\/strong>; and finally the under sleeve piece, which contains all the points beginning with <strong>B.<\/strong><\/p>\n\n\n\n<p class=\"text-justify\">The grainlines are marked with points preceded by <strong>H<\/strong>. We will find one grainline in each piece<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Back piece (E)<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-1024x576.jpg\" alt=\"Back pattern piece of jacket with construction lines and contours identified\" class=\"wp-image-6831\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_06_ESP-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">E1 &#8211; Center back line (without seam allowance)<br>E2 &#8211; Hem or bottom line (without seam allowance)<br>E3 &#8211; Side seam (1 cm seam allowance)<br>E4 &#8211; Armhole seam (1 cm seam allowance)<br>E5 &#8211; Shoulder seam (1 cm seam allowance)<br>E6 &#8211; Back neckline seam (1 cm seam allowance)<br>H1 &#8211; Grainline of the back piece<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Front piece (D)<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-1024x576.jpg\" alt=\"Front pattern piece of jacket with neckline armhole and construction lines identified\" class=\"wp-image-6837\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_07_DEL-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">D1 &#8211; Center front line (without seam allowance)<br>D2 &#8211; Hem line (without seam allowance)<br>D3 &#8211; Side seam (1 cm seam allowance)<br>D4 &#8211; Armhole seam (1 cm seam allowance)<br>D5 &#8211; Shoulder seam (1 cm seam allowance)<br>D6 &#8211; Front neckline seam (1 cm seam allowance)<br>D7 &#8211; Louis seam (1 cm seam allowance)<br>H2 &#8211; Grainline of the front piece<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Upper sleeve piece (C)<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-1024x576.jpg\" alt=\"Upper sleeve pattern piece with sleeve cap and construction lines identified\" class=\"wp-image-6843\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_08_Cim-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">C1 &#8211; Elbow seam (1 cm seam allowance)<br>C2 &#8211; Hem or bottom line (without seam allowance)<br>C3 &#8211; Bleeding seam or blooding seam (1 cm seam allowance)<br>C4 &#8211; Sleeve cap seam or sleeve head seam (1 cm seam allowance)<br>C5 &#8211; Bleeding line or blood line (1 cm seam allowance)<br>H3 &#8211; Grainline of the upper sleeve piece<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Under sleeve piece (B)<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-1024x576.jpg\" alt=\"Lower sleeve pattern piece with construction lines and lower contour identified\" class=\"wp-image-6849\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_09_baj-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">B1 &#8211; Elbow seam (1 cm seam allowance)<br>B2 &#8211; Hem or bottom line (without seam allowance)<br>B3 &#8211; Bleeding seam or bleeding line seam (1 cm seam allowance)<br>B4 &#8211; Bleeding seam heel (1 cm seam allowance)<br>B5 &#8211; Under sleeve seam (1 cm seam allowance)<br>B6 &#8211; Shoulder seam (1 cm seam allowance)<br>H4 &#8211; Grainline of the under sleeve piece<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Other structural parts<\/strong><\/h3>\n\n\n\n<p class=\"text-justify\">In this section, we study other lines that may be considered measurements rather than lines.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-1024x576.jpg\" alt=\"Relationship between body measurements and jacket pattern structure with armhole and sleeve references\" class=\"wp-image-6855\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_10-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>The armhole rectangle<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-1024x576.jpg\" alt=\"Armhole rectangle applied to the body as base for pattern construction\" class=\"wp-image-6861\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_11-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">S1 &#8211; Armhole rectangle width<br>S2 &#8211; Armhole rectangle length<br>S3 &#8211; Armhole depth<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>The sleeve rectangle<\/strong>:<\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-1024x576.jpg\" alt=\"Sleeve rectangle applied to pattern with structural width and height measurements\" class=\"wp-image-6867\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nom_12-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">M1 &#8211; Sleeve rectangle width<\/li>\n\n\n\n<li class=\"text-justify\">M2 &#8211; Armhole depth<\/li>\n<\/ul>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6709_ec5e3c-ad .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-6709_ec5e3c-ad .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6709_ec5e3c-ad\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Drafting the pattern step by step<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left text-justify\">To see the complete step-by-step drafting process, you can access the video here. It develops the entire system continuously, from the first line to the final construction of the pattern.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Patr\u00f3n base de la cazadora paso a paso | Patronaje completo del cuerpo y manga\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/b2A2Tt6ecng?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Construction of the jacket base pattern through a structured system that connects body measurements, proportions and drafting geometry. It covers required measurements, their deduction from chest measurement, and full pattern organization: construction lines, pieces, seams and grainlines. It also includes the logic of the armhole rectangle and sleeve rectangle as the foundation of the system. A reproducible method to develop any jacket with technical precision.<\/p>\n","protected":false},"author":1,"featured_media":6698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[617,1012,2147,607],"tags":[524,2159,147,171,251,259,694,683,267,50,58],"class_list":["post-6709","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-basic-pattern","category-blog-en","category-casual-jacket","category-pattern","tag-basepattern","tag-casual-jacket","tag-fashion-design","tag-fashion-school","tag-pattern","tag-pattern-making","tag-patternmaking-technique","tag-patternmaking-tutorial","tag-patterns","tag-tele-virtual-patronage-en","tag-televirtualpatronage-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Casual jacket block - Tele Virtual Patronage<\/title>\n<meta name=\"description\" content=\"Jacket base pattern with full drafting, measurements, proportions and technical nomenclature. 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