COMMENTS BY REVIEWER RESOLUTION Reviewer: AERB Page ….of …. : India 26/10/2018 Country/Organisation Date: Comment Page/ Proposed text Comments/Reason Accepted, Rejected Reason for No. Para/Line but modification / No. modified Rejection as follows 1 Chapter-3 The latest draft Add following in Chapter discusses seismically 3, in General Concepts of Page-8 isolated structures Seismic Design: which are very For plant structure, sensitive to low systems and components frequency motions In sensitive to low frequency view of this it is felt motions (Eg. SSCs on that, Chapter-3 isolators), time histories/ which discusses response spectra should be input for seismic examined and, if necessary, design need to modified to take related incorporate special effects into account. requirements on ground motion characteristics to be considered for structures on isolators 2 4.16. c) Site contour: retaining The section discusses walls, cuts earth natural slopes, ‘engineered and fills. structures’. The natural slopes mentioned in item (c) may be dropped as it is not an
COMMENTS BY REVIEWER Reviewer: AERB Page ….of …. Country/Organisation : India Date: 26/10/2018 RESOLUTION Comment No. Page/ Para/Line No. Proposed text Comments/Reason Accepted, but modified as follows Rejected Reason for modification / Rejection 1 Chapter-3 Page-8 Add following in Chapter 3, in General Concepts of Seismic Design: For plant structure, systems and components sensitive to low frequency motions (Eg. SSCs on isolators), time histories/ response spectra should be examined and, if necessary, modified to take related effects into account. The latest draft discusses seismically isolated structures which are very sensitive to low frequency motions In view of this it is felt that, Chapter-3 which discusses input for seismic design need to incorporate special requirements on ground motion characteristics to be considered for structures on isolators 2 4.16. c) Site contour: retaining walls, natural slopes, cuts and fills. The section discusses ‘engineered earth structures’. The natural slopes mentioned in item (c) may be dropped as it is not an
Review_CommentsforDS490_AERB.docx