A simple suspension bridge (also rope bridge, swing bridge (in New Zealand), suspended bridge, hanging bridge and catenary bridge) is an early type of bridge that is supported entirely from anchors at either end, and has no towers or piers. However, it may have saddles. In such bridges, the deck of the bridge follows the downward and upward arc of the load-bearing cables, with additional light ropes at a higher level used to form a handrail. Alternatively, stout handrail cables supported on short piers at each end may be the primary load-bearing element, with the deck suspended below. Suspended well from two high locations over a river or canyon, simple suspension bridges follow a shallow downward catenary arc and are not suited for modern roads and railroads. Owing to practical limitation in the grade (i.e. the deck being an arc, not flat) and the response to dynamic loads of the bridge deck, this type is quite restricted in its load-carrying capacity relative to its span. This type of bridge is considered the most efficient and sustainable design in developing countries however, especially for river crossings that lie in non-floodplain topography such as gorges.
The Ibans are a branch of the Dayak peoples of Borneo. In Malaysia, most Ibans are located in Sarawak, a small portion in Sabah and some in west Malaysia. They were formerly known during the colonial period by the British as Sea Dayaks. Ibans were renowned for practising headhunting and tribal/territorial expansion and had a fearsome reputation as a strong and successful warring tribe in ancient times.
Since the arrival of Europeans and the subsequent colonisation of the area, headhunting gradually faded out of practice although many tribal customs, practices and language continue. The Iban population is concentrated in Sarawak, Brunei, and in the West Kalimantan region of Indonesia. They live in longhouses called rumah panjai.
Nowadays, most of the Iban longhouses are equipped with modern facilities such as electricity and water supply and other facilities such as (tar sealed) roads, telephone lines and the internet. Younger Ibans are mostly found in urban areas and visit their hometowns during the holidays. The Ibans today are becoming increasingly urbanised while retaining most of their traditional heritage and culture.