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DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
T and K brackets-which at the top?
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<blockquote data-quote="hexah" data-source="post: 841495" data-attributes="member: 333852"><p>I remembered Triax had a note on calculating wind loading on masts. Here it is.</p><p></p><p>[ATTACH]54119[/ATTACH]</p><p></p><p>The diagram shows a 'through the roof' mount which is bolted onto the rafters. These are common on the continent. Note that the dish is a TD110 here described as a 1 meter. Maybe the graphic designer had the Gibertini 1m in mind!</p><p></p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite85" alt=":-respekt" title="Respect :-respekt" loading="lazy" data-shortname=":-respekt" /></p><p></p><p>There is a gaiter around the mast where it goes throught the tiles.</p><p></p><p><a href="http://www.triax.com/en/FindProduct/ProductDetails.aspx?product=%7B05EF900E-CC13-46E1-A568-86CFF846287A%7D" target="_blank">http://www.triax.com/en/FindProduct/ProductDetails.aspx?product={05EF900E-CC13-46E1-A568-86CFF846287A}</a></p><p></p><p></p><p>The mast is likely a 50mm (2 inch) diameter mast 2mm thick 1.4 gauge. They give a maximum bending moment in their mast catalogue.</p><p></p><p><a href="http://www.triax.com/en/FindProduct.aspx?category=%7B31904A4E-7ED5-4F06-9015-27CE35548B39%7D" target="_blank">http://www.triax.com/en/FindProduct.aspx?category={31904A4E-7ED5-4F06-9015-27CE35548B39}</a></p><p></p><p></p><p>The mast clamps are not very impressive. They are bolted into the rafters around the pole.</p><p></p><p><a href="http://www.triax.com/en/FindProduct/ProductDetails.aspx?product=%7BB00760B0-2D6D-4E7A-8D36-2FEADEA5436E%7D" target="_blank">http://www.triax.com/en/FindProduct/ProductDetails.aspx?product={B00760B0-2D6D-4E7A-8D36-2FEADEA5436E}</a></p><p></p><p></p><p>They are not in the same league as T and K brackets.</p><p></p><p>So this suggests to me that there is no point in worrying too much about the T and K brackets in solid walls if small steel brackets work well on wooden rafters with 1 meter dishes partly above the ridge line plus other antenna above the ridge on the same mast.</p><p></p><p>So no problem putting the K on top to spread the weight. Or the T on top if you like!</p><p></p><p>What is important is that the clamped length of the mast should be at least one sixth of the total mast length. I have always used one fifth as my rule of thumb.</p><p> </p><p></p><p></p><p></p><p></p><p></p><p></p><p>Went out to check and they are both K on top.</p><p></p><p> <img src="/styles/default/xenforo/smilies/38389100.lol.gif" class="smilie" loading="lazy" alt=":-lol" title="Laugh Out Loud :-lol" data-shortname=":-lol" /></p></blockquote><p></p>
[QUOTE="hexah, post: 841495, member: 333852"] I remembered Triax had a note on calculating wind loading on masts. Here it is. [ATTACH]54119.IPB[/ATTACH] The diagram shows a 'through the roof' mount which is bolted onto the rafters. These are common on the continent. Note that the dish is a TD110 here described as a 1 meter. Maybe the graphic designer had the Gibertini 1m in mind! :-respekt There is a gaiter around the mast where it goes throught the tiles. [URL="http://www.triax.com/en/FindProduct/ProductDetails.aspx?product=%7B05EF900E-CC13-46E1-A568-86CFF846287A%7D"]http://www.triax.com/en/FindProduct/ProductDetails.aspx?product={05EF900E-CC13-46E1-A568-86CFF846287A}[/URL] The mast is likely a 50mm (2 inch) diameter mast 2mm thick 1.4 gauge. They give a maximum bending moment in their mast catalogue. [URL="http://www.triax.com/en/FindProduct.aspx?category=%7B31904A4E-7ED5-4F06-9015-27CE35548B39%7D"]http://www.triax.com/en/FindProduct.aspx?category={31904A4E-7ED5-4F06-9015-27CE35548B39}[/URL] The mast clamps are not very impressive. They are bolted into the rafters around the pole. [URL="http://www.triax.com/en/FindProduct/ProductDetails.aspx?product=%7BB00760B0-2D6D-4E7A-8D36-2FEADEA5436E%7D"]http://www.triax.com/en/FindProduct/ProductDetails.aspx?product={B00760B0-2D6D-4E7A-8D36-2FEADEA5436E}[/URL] They are not in the same league as T and K brackets. So this suggests to me that there is no point in worrying too much about the T and K brackets in solid walls if small steel brackets work well on wooden rafters with 1 meter dishes partly above the ridge line plus other antenna above the ridge on the same mast. So no problem putting the K on top to spread the weight. Or the T on top if you like! What is important is that the clamped length of the mast should be at least one sixth of the total mast length. I have always used one fifth as my rule of thumb. Went out to check and they are both K on top. :-lol [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
T and K brackets-which at the top?
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