What masonry materials is considered as one of the most extensively used walling materials in the Philippines. Some of the reasons for this is their relative low cost when compared to other materials and speed of installation?

Which one is described as a block used in a wall that bears a load resting upon it by conducting its weight to foundation structure?

Which type of blocks intended for walls, partitions, fences, dividers and the like carrying its own weight.

What method in construction estimate uses the dimensions of block – 20cm height by 40 cm length (0.20x0.40m). Vertical and horizontal layers of the wall will be computed by dividing the wall's height (length) by a unit CHB. The total number of CHB will be the product of the vertical layers by the horizontal layers?

Which of the following method is based on the number of CHB that will fit a square meter then having this compared with the area of wall to be estimated?