Company Name: Avranex (Pty) Ltd Trading As Ubuhle Bakha Ubuhle (UBU)
Address: P. O Box 669, Weltevreden Road, Philippi, Cape Town, 7781
Telephone: +27 83 327 3045
The certificate covers the use of the Sandbag Building System in all regions of South Africa for the erection of single-storey buildings for occupancy classifications set out below (SANS 10400: Table 1 of Regulation A (20) (1)):
- moderate and low-risk commercial service buildings (B2 and B3)
- offices (G1)
- domestic residence (H3) (limited to home owner developer)
- dwelling house (H4) (limited to homeowner developer)
- moderate risk storage (J2) and
- low risk storage (J3).
This certificate and Agrément South Africa’s assessment apply only to Sandbag Building System buildings that are designed and erected as described and illustrated in this certificate, and where the terms and conditions of certification are complied with.
Sandbag Building System is a timber frame structure consisting of timber lattice beams (Eco-Beam) as vertical and horizontal studs and wall plates with sandbags as in fills. The walls are finished by securing steel wire mesh on both sides of the frame structure and plastering with conventional cement-sand plaster 25 mm thick.
The Eco-beams are fabricated from two 38 mm square treated timber sections (SANS 10005) connected by continuous galvanised steel strap which zigzag between the timber to form a lattice beam 220 mm deep.
The foundation and ground floor slabs are conventional concrete strip footing and surface bed with screed finish which are always the responsibility of a professional engineer.
The walls are nominally 270 mm thick and constructed by fixing vertical Eco-beams (columns/studs) spaced at 900 mm centres to top and bottom Eco-beams (wall and sole plates). Bags made from UV protected non-woven polypropylene fabric and measuring 300 mm x 300 mm are filled with sand and packed in between the studwork up to the wall plate. Each layer is compacted slightly.
At the corners or junctions, the walls are Eco-beams reinforced with 6 mm diameter steel wire mesh at least 300 mm in length on both side