Thiet ke noi that Giao thong dung va xien la bo phan giao thong di lai theo huong xien va dung, tao dieu kien lien ket cac bo phan cong trinh voi cac do cao khac nhau. Giao thong dung, xien va giao thong ngang co mol tuong quan mat thiet, it ra chung dau moi giao thong. Trong nhung cong trinh dien tich su dung nho ma xd nhieu tang, truong hop nay su dung cau thang se cam thay met moi vi khong can doi giua giao thong ngang va xien, Khi thiet ke cau thang nen luu y moi tuong quan nay... Noi dung nghien cuu phan nay: IS Dac diem tung loai giao thong dung va xien, 13* Giao thong xien (cau thang). 1- Dac diem tung loai Phan loai theo phuong phap di gom ba loai: phuong phap di bo, di bang co khi va phuong phap ket hop vua co vua di bo. Phuong phap di bo: Bang doc, ram bang doc (rampe pente doc), duong doc, cau-bang-doc (duong doc di gap khuc giong cau thang), bac cap (nhu tam cap, ngu cap), cau bac cap (bac cap nhieu bac), cau thang, thang (Hinh 3.4). Phuong phap co khu. Thang may, thang tu chuyen m. Thang tu chuyen (Monte Plats bay Monte Charge) chu yeu su dung doi trong. Cac ten goi giao thong dung xien thuong phu tl»1 =
G vao do doc cua phuong tien di chuyen, vi du: cau thang (escalier) va cau thang may (escalier mecanique hay escalier rouland): cau thang chay bang may do doc trung binh 30°, hoac thang va thang may co do doc 60° den 90°