DIY pull up bar

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I am thinking to build a DIY pull up bar using a galvanised pipe and some wooden posts, the only problem is that my garden is not suitable (my second half won't let me fit something that is visible), but by the side of my shed i got this concreted area that is hidden. If I use the following post bases (https://www.ebay.co.uk/itm/5-9-150MM-GALVANISED-BOLT-DOWN-BOLT-GRIP-FENCE-POST-SUPPORT-TIMBER-HOLDER/142527042862?_trkparms=aid=222007&algo=SIM.MBE&ao=1&asc=20160908110712&meid=6bd16d898a34478fa23b21eb75b89b8a&pid=100677&rk=14&rkt=30&sd=131897806410&itm=142527042862&_trksid=p2385738.c100677.m4598), bolted to the concrete base, could anyone tell me if it would work (i weight around 77kg)? TIA
J

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