On 21/11/2020 18:45, T i m wrote:

They
seem to only give the static load not any dynamic load figures. Is
climbing and descending a ladder a static load?

Good question, however, if they are rated as '150kg max load' you can
be fairly sure that won't be close to the failure point and in the
worst case of usage (eg, lower than 70 degrees or with someone
'bouncing' on it).

Never mind the theory. Any ladder that you plan to use, place it fully
extended horizontally on the ground, supported only at the ends by saw
horses or piles of beer crates or whatever. Climb onto the midpoint
carrying any likely load. If it takes that it's OK. That was my periodic
test of ladders for all my years of using them.

Bill