BERLIN-A herd of dairy cows nearly lifted the roof off their barn in central Germany when methane released by the animals caused an explosion. Police in Hesse state said in a statement that a static electric charge apparently triggered the detonation, and a spurt of flame, on Monday at a farm in Rasdorf. The roof was slightly damaged and one cow suffered light burns.
Handrails shall be provided on at least one side of each continuous run of treads or flight with four or mâ¦ore risers. - Maximum riser height allowed by code is 7 3/4 and you would need to have 3 or less risers to omit a handrail. The answer would be 23 1/4 max.
A stair with a single riser or with two r isers. and a tread is permitted at locations not. required to be accessible by 780 CMR 11.00, provide d th at the risers and treads comp ly with. 780 CMR 1009.3, the minimum depth of the. tread is 13 inches (330 mm) and at least one. handrail complying with 780 CMR 1009.11 is.