Design DESIGN CONSIDERATIONS The main characteristic of the BEBO arch - the main component, is that their slenderness although adequate to support the loads, is flexible enough to allow elastic deformations to mobilize the passive resistance of the backfill. The analysis of the soil/arch structure is performed by computer simulation modeling the behavior of arch and backfill. The arches are analyzed for load conditions experienced throughout handling, transport, erection, backfilling and finally when in service. The loads considered are: - Self weight - Live loads** to BS5400: Part 2: 1978 - Earth pressures from backfilling - Compaction equipment   in various stages - Differential foundation movements Reinforced concrete design in accordance to BS5400: Part 4: 1984 Characteristic strength of concrete at 28 days, fcu = 40 MPa Concrete cover to reinforcement: Earth-face = 50mm   Air-face = 40mm Backfill materials: Selected materials to specification. Refer to technical manual on "Handling and Installation of BEBO System". FOUNDATIONS BEBO foundations are designed as for normal bridge foundations. Common types of foundation used for BEBO arches are strip footings, on slab foundations, and on pilecaps supported on reinforced concrete piles. Typical footing diagrams     Bebo Arch | Page 1 | Page 2 | Page 3 | Page 4 | Page 5 | Page 6 | Page 7 | Page 8 | Page 9 | Page 10 | Page 11 | Page 12 | Page 13 | Page 14 | Page 15 | Page 16 | Page 17 | Page 18 | Page 19 | Page 20 | Page 21 | Page 22 | Page 23   Top HUME CONCRETE MARKETING SDN BHD (8411-T) Level 2, Bangunan Pan Global, No. 1A, Jalan Tandang, P.O.Box 21, 46700 Petaling Jaya, Selangor. Hot-line: (603) 7785 5282 Tel: (603) 7783 3068 Fax: (603) 7785 1823 E-mail: Adam Hussein (HIMB-PJ)