B3. Construction materials of the outer walls
B2 and B3-Construction Materials of the Roof and Outer Walls
Data on construction materials of the roof and outer walls provide information on the construction, replacement, and improvement of housing units. These items can be used as proxy variables to measure the economic condition of households.
Moreover, data on these items can be used in the evaluation of construction statistics, programme implementation, and for estimating investments in housing construction. They can also be used to determine the number of households residing in structurally acceptable housing units.
Structural acceptability of housing units implies that these housing units are made of durable construction materials that will safeguard the occupants of the housing unit from adverse climatic conditions and provide protection and privacy.
B3-Construction Materials of the Outer Walls
The categories for the kind of construction materials of the outer walls are as follows0:
Write "X" in the box opposite the kind of material used in the construction of the outer walls. Fill out this item through observation but if you are in doubt, ask the respondent on the material used mainly for the outer walls.
For a house or building in which half of the storeys is walled with concrete/brick/stone and the other half with wood, write "X" in the box opposite the category "half concrete/brick/stone and half wood". Mark also this category if the walls are made of about half of two categories of materials mentioned above.
For a two-storey house, especially in rural areas wherein the ground floor is used to raise poultry, or to store grains, farm implements, and others, report the main material used in walling the second floor, unless the walls can be classified under Half concrete/brick/stone and half wood. In other cases, wherein the walls are made of different materials, report the material used in most part of the walls.
Housing units in nonbuilding structures such as carts, railroad cars, trailers, caves, culverts, boats, and bridges should have an "X" mark in the box opposite Makeshift/salvaged/ improvised materials.
Write "X" in the box opposite Others and specify the kind of material used for the outer walls if the material of the outer walls is not one of the aforementioned categories.