BUILDING WITH EARTH THE NUBLAN ARCH AND THE PARABOLA HOUSE ‘The lack of timber and ‘wood products has beco- me a serious threat to ‘boll local and glebal sus- vival in many parts of the world DIB recommends "The Nubian Arch’, lustrated here from a Danida financed pilotprojact in Ladakh, Northern Incia, in 1986, as an effective step towards combatting this devetoorrent. The Nubian Arch has its ori- gin in ancient ogypt, where it can be traced back 6000 years, ‘The construction is carefully described by Hassan Fethy, tho Egyptian architect, in his book "Architecture for (he Poor”, Weal cn Some of Fathy’s applicators of this construction is raprodu- ced here [rom Une book. ‘The Nubian Arch is a parebole-shaped selfhearing constrvetion of sunna- wed earth blocks, Which makes it possible with the help of simple bricklaying technique to erect a complete norehouse with walls and root exclusively using ¢u:Lh materials. PARBOLAHOUSES We call houses built with the Nubian arch as the roofconatruction "Par bola houses”. A very simple parabolahouse can principally be built eulirely without capi- tal. A solution which may be particularly relevant in a relief situation. A more sophisticated type could be an extension of one ot these reliet houses. For example as illustrated here with. an insulated coof, wooden doors and windows, dampcourse and foundation. BRICKLAYING TECNIQUE 1 A. parabolashaped endwall with the dosired height of the arch is built 2, ‘The arch is laid with an oblique an- gled course. 2 ‘The stones to be used mast be made with pattemed surface. 4 Brieklaying can be done simultane- ously from both endwalls, Measoring the areh From the year 1990 in conjunction with the Bolivian NGO- CEPRODES, and @ group of homeless former minewerkers and peagents, DIB is carring out a Danida financed housingprogramme. Diferent housetypes are being erected , ranking from the vary eimple relief house to more advanced hom- es on two floors, schools and health ceslces. ‘The houses are built within the economic guidelines of UNCHS Habitat Acusing programme in Bolivia, and experiences have shown thet the most basic house can he erected as do-it-yourself projects for Jess than half the cost of building traditional low-cost houses int Uke area,