230) A mortar joint in masonry which is normal to the face of wall is known as

231) The slenderness ratio for masonry walls should not be more than

232) The proportions of lime and sand in the mortar normally used in brick construction are

233) Number of vertical joints in a stretcher course is x times the number of joints in the header course, where x is equal to

234) As compared to stretcher course, the thickness of joints in header course should be