trong thiet ke mong coc ,sau khi xac dinh suc chiu tai cua coc theo cac phuong phap thong ke,thi nghiem xuyen tinh va xuyen tieu chuan ,em thay rang suc chiu tai cua coc tinh theo thong ke lon hon rat nhieu so voi theo phuong phap thi nghiem ,mat khac la thi nghiem spt lai cho suc chiu tai cua coc lon hon so voi cpt,em muon lay suc chiu tai theo spt cho de bo tri coc va tiet kiem nhung thay giao lai huong dan la lay gia tri be nhat trong cac gia tri tren ,cung la nhung phuong phap thi nghiem de xac dinh suc chiu tai nhun gneu em dung theo spt thi lai cho giai phap mong coc rat dep va tiet liem hon ,xin may anh cho em biet them la neu thiet ke em co the gia vo khong biet den cpt de dung spt thiet ke co duoc khong va em nen dung he so an toan Fs=2 hay 2,5.neu dung Fs=2 thi lai cho ket qua dep hon nua nhung thay giao lai bao nhu the thi huy dong chua het 40%suc chiu tai
nen mong that la roi ram va cung chang thong nhat chi het ca
rat mong su chi giao cua cac dai su huynh