*3.1.3 Building facilities*

The electrical facilities for the SHS project buildings were designed according to standard NBR 5410 for two types of power supply: two-phase and three-phase lines with a 220v phase-to-phase voltage, with grounded neutral and electrical apparatus.

When the brick holes are not grouted, they act as conduits for the wires, which do not require pipes on route to the points of use (switches and sockets). When the pipes are embedded in concrete holes, they must be inserted into preferably flexible conduits. The light fixtures are attached to the roof rafters. The switchboard is located outside the masonry (overlapping), close to the bathroom, in order to reduce wire consumption in the kitchen and electric shower circuits.

The apparent vertical plumbing system was designed for easy maintenance and to avoid holes in the walls, since they have a structural function. The water supply and distribution system were designed considering the use of apparent piping, preferably PVC, considering the cost–benefit ratio of this material and its easy procurement (**Figure 7a**). The system is directly connected to the public water supply network and does not require a pumping system. It was proposed to use a 1000-litre elevated water tank for smaller prototypes, and two 1000-litre units for the larger.

A standard internal solution was proposed for the water distribution in standpipes, branches and sub-branches to enable future expansion. This solution is identical in embryos 1, 2, and 4 and slightly different in embryo 3, because of its particular architecture. In this case, the pipe is built into the bedroom walls.

The sewage system was designed in PVC, using ceiling cladding to separate the pipes from the domestic environment. The waste and vent pipes were placed in the corners of the rooms and inbuilt with plaster. Considering that vulnerable communities would not have a formal sewage system, the proposed solution would be

*Simple Housing Solution Project: (Re) Building in Critical Situations DOI: http://dx.doi.org/10.5772/intechopen.94953*

#### **Figure 7.**

*Natural Hazards - Impacts, Adjustments and Resilience*

**86**

*3.1.3 Building facilities*

*DPL (a) equipment; (b) testing. Source: [25].*

apparatus.

**Figure 6.**

The electrical facilities for the SHS project buildings were designed according to standard NBR 5410 for two types of power supply: two-phase and three-phase lines with a 220v phase-to-phase voltage, with grounded neutral and electrical

When the brick holes are not grouted, they act as conduits for the wires, which do not require pipes on route to the points of use (switches and sockets). When the pipes are embedded in concrete holes, they must be inserted into preferably flexible conduits. The light fixtures are attached to the roof rafters. The switchboard is located outside the masonry (overlapping), close to the bathroom, in order to

The apparent vertical plumbing system was designed for easy maintenance and to avoid holes in the walls, since they have a structural function. The water supply and distribution system were designed considering the use of apparent piping, preferably PVC, considering the cost–benefit ratio of this material and its easy procurement (**Figure 7a**). The system is directly connected to the public water supply network and does not require a pumping system. It was proposed to use a 1000-litre elevated water tank for smaller prototypes, and two 1000-litre units for the larger. A standard internal solution was proposed for the water distribution in standpipes, branches and sub-branches to enable future expansion. This solution is identical in embryos 1, 2, and 4 and slightly different in embryo 3, because of its particular architecture. In this case, the pipe is built into the bedroom walls.

The sewage system was designed in PVC, using ceiling cladding to separate the pipes from the domestic environment. The waste and vent pipes were placed in the corners of the rooms and inbuilt with plaster. Considering that vulnerable communities would not have a formal sewage system, the proposed solution would be

reduce wire consumption in the kitchen and electric shower circuits.

*(a) Internal distribution system - bathroom with apparent pipes. (b) a waste collection system in the bathroom and laundry area with a primary treatment system. Source: [26].*
