Dear K.Veerayuth, K.Boonchai,
Now we found problem with concrete gutter at Beamline that damages as below detail, which we are under investigating,
With this regard, I need your help and support,
1.How we check that the concrete had been reach 280 KSC requirement. Request supplier to submit compressive strength of concrete samples report at 28 days to Thai Herrick.
2. How we know each 9mm. bar interval(distance between one bar to another bar), Check rebar size and spacing in drawings and actual work on site. The inspection of rebar shall be inspection before placing concrete. Supplier shall submit drawing to Thai Herrick for approval before start work.
3. Are there relation between no. 1 and 2 to make this 280ksc. Compressive strength of concrete, reinforcement detail, gutter geometry (size, thickness) relate to strength and capacity of gutter to support load.