October 24, 20178 yr I have a 41 page MiTEK Industries pdf relating to the design of my first floor posi-joists. Just wondering if someone is able to help me read the report to find the expected vertical deflection for a 50kg person walking across the floor. Or even if this value is known since only 3 load cases appeared to be considered: Load Cases Considered: : 1 Vibration Check As EC5 NA.2.6 : 2 Long Term Floor Dead+Floor Imposed : 6 ScreedFlo Construction load Dead Anyone a posi-joist 'expert'? Or is there a stated acceptable floor flex anywhere? (Sorrry I won't go into the history of why I would like to know this data) Paul
October 24, 20178 yr Spans are based on deflections being limited to 0.003 x span up to a maximum of 14mm. Thats from the BS Regs
October 25, 20178 yr Author I've been quoted very often that 12mm was acceptable - but after a while I learned that the 12mm refers to the deflection (sag) after 50 years! Can you kindly tell me where in the BS Regs joist deflections are given, ta
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