simple manual fender

[odisseo 18]

How much weight could a man with a hoist made up of a rope and a carrucola? I found the formula in physics= f driving force, q strength resistant k advantage; k=q/f = >1; q strength resistant should be the load to lift,

 

[meccanicamg]

I don't know what kind of reasoning you went to get.... anyway a hand hoist made simply by a pulley, so without any kind of referral and therefore of reduction report I would say that is equal to its strength.
in detail the norms provide that a man does not make manual effort greater than 30 kg, so he can raise a weight of 30kg.
if then this man is petririno the zozzone, which weighs 120kg if he puts weight lifts 120kg but then it does not manage it anymore because the inertia of the load makes to rise from the floor.

 

[odisseo 18]

I apologize for the banality, I only had to prepare a providential whirlpool to make up some high-level jobs, I apologize if I have tedied you with my doubts, I wanted to build a structure with all the crypts following the regulations in force.
https://www.almaeurope.com/

 

[MassiVonWeizen]

in detail the norms provide that a man does not make manual effort greater than 30 kg, so he can raise a weight of 30kg.

I was just looking for the maximum permissible weight for manual handling and xxxiii of Legislative Decree 81/2008 reports 25kg for males 3 and 20 for females. I carry the pdf (page 14).
to you is a more recent rule?

 

[odisseo 18]

thanks for your collaboration and the right clarifications, I just wanted to make a device according to 10 meters of altitude with max 50 kg of flow thanks again