diff --git a/docs/assets/Diagram.svg b/docs/assets/Diagram.svg
new file mode 100644
index 0000000..6ec9173
--- /dev/null
+++ b/docs/assets/Diagram.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="1053px" height="517px" viewBox="-0.5 -0.5 1053 517"><defs><pattern patternUnits="userSpaceOnUse" width="13" height="13" x="0" y="0" patternTransform="rotate(45)" id="mx-pattern-hatch-2-000000-0"><line x1="0" y1="0" x2="0" y2="13" stroke="#000000" stroke-width="3"/></pattern><pattern patternUnits="userSpaceOnUse" width="12" height="12" x="0" y="0" id="mx-pattern-dots-2-000000-0"><circle cx="6" cy="6" r="3" stroke="none" fill="#000000"/></pattern></defs><g><rect x="1" y="409.46" width="760" height="30" fill="url(#mx-pattern-hatch-2-000000-0)" stroke="rgb(0, 0, 0)" stroke-width="2" pointer-events="all"/><rect x="76" y="79.46" width="20" height="330" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-width="2" pointer-events="all"/><rect x="646" y="79.46" width="20" height="330" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-width="2" pointer-events="all"/><path d="M 320.45 -272 L 338.64 -272 L 338.64 -272 L 421.74 51 L 338.64 374 L 338.64 374 L 320.45 374 L 401.74 51 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" transform="rotate(-90,371.1,51)" pointer-events="all"/><rect x="96.1" y="389.46" width="550" height="20" fill="url(#mx-pattern-dots-2-000000-0)" stroke="rgb(0, 0, 0)" stroke-width="2" pointer-events="all"/><rect x="393" y="311" width="60" height="30" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 326px; margin-left: 394px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><p>R<sub style="font-size: 24px;">f</sub></p></div></div></div></foreignObject><text x="423" y="333" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle" font-style="italic">Rf</text></switch></g><rect x="713" y="139.46" width="340" height="210" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe flex-start; width: 332px; height: 1px; padding-top: 129px; margin-left: 718px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: left; max-height: 220px; overflow: hidden;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><h1 style="line-height: 70%;"><font style="font-size: 24px;">Умовні познаки:</font></h1><p style="line-height: 70%; font-size: 24px;"><font style="font-size: 24px;"><i style="">1</i> — шар підлоги;</font></p><p style="line-height: 70%; font-size: 24px;"><font style="font-size: 24px;"><i>2</i> — ґрунт;</font></p><p style="line-height: 70%; font-size: 24px;"><font style="font-size: 24px;"><i>w</i> — товщина зовнішніх стін;</font></p><p style="line-height: 70%; font-size: 24px;"><font style="font-size: 24px;"><i style="">R<sub>f</sub></i> — термічний опір підлоги.</font></p></div></div></div></foreignObject><text x="718" y="141" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px">Умовні познаки:...</text></switch></g><path d="M 646 491 L 646.1 409.46" fill="none" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 666 491 L 666.1 409.46" fill="none" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 626 481 L 637.76 481" fill="none" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 643.76 481 L 635.76 485 L 637.76 481 L 635.76 477 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="all"/><path d="M 716 481 L 674.24 481" fill="none" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 668.24 481 L 676.24 477 L 674.24 481 L 676.24 485 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-end; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 478px; margin-left: 691px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: nowrap;">W</div></div></div></foreignObject><text x="691" y="478" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle" font-style="italic">W</text></switch></g><path d="M 270.45 489.46 L 315.95 443.96" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 319.66 440.25 L 317.18 447.68 L 315.95 443.96 L 312.23 442.73 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 501px; margin-left: 263px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">2</div></div></div></foreignObject><text x="263" y="509" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">2</text></switch></g><path d="M 333 351 L 288.05 385.58" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 283.89 388.78 L 287.3 381.74 L 288.05 385.58 L 291.57 387.28 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 341px; margin-left: 343px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">1</div></div></div></foreignObject><text x="343" y="348" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">1</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
diff --git a/docs/calculation-method/transmission/index.md b/docs/calculation-method/transmission/index.md
index 8c85876..4017a6e 100644
--- a/docs/calculation-method/transmission/index.md
+++ b/docs/calculation-method/transmission/index.md
@@ -259,7 +259,7 @@ $i\dots I$ — кількість шарів огороджувальної ко
 
 Приклад підлоги на ґрунті зображено на рисунку:
 
-
+![Diagram](../../assets/Diagram.svg)
 
 # Список використаних джерел