Building Construction Set 7

In a king post truss, principal rafter and tie beams are jointed together with a bridle joint ✘ Joint between the principal rafter and the king post is made by making tenon and mortise respectively ✘ Joint between strut and king post, is generally of mortise and tenon type ✘ All the above ✔

In dog-legged stairs, no space between its flights is provided ✘ In open newel stair, a rectangular well is provided ✘ In geometric stair, a curved shaped well between forward and backward flights, is provided ✘ In geometrical stair, two quarter space landing is provided ✔

In Flemish bond, headers and stretchers are laid alternately in the same course ✘ In Flemish bond every header in each course lies centrally over every stretcher of the underlying course ✘ In English bond, stretchers are laid in every course ✘ In English bond, headers and stretchers are laid in alternate courses ✔

In king post truss, one vertical post is used ✘ In a queen post truss, one vertical post is used ✘ In a queen post truss, two vertical posts are used ✘ None of these ✔

Inclined borings are made for taking samples under existing structures ✘ Inclined borings are occasionally used instead of vertical holes ✘ The spacing of inclined borings is kept such that one bore hole is vertically above the bottom of an adjacent bore hole ✘ All the above ✔

Isolated footing is provided under column to transfer the load safely to soil bed ✘ Column footings may have steps or projections in the concrete base ✘ Heavily loaded column base must be provided steel reinforcement in both directions ✘ All the above ✔

Lime mortar with cement in the ratio of in 10 is cheaper and better for outside plaster ✘ For very cold or very hot climate, a compact and closed plan should be provided ✘ On the sea coast, an exposed and open house is generally preferred ✘ All the above ✔

Louvered door is generally provided in bath rooms ✘ Flush door is generally provided in dining room ✘ Revolving door is generally provided in cinema halls ✘ Sliding door is generally provided in show rooms ✔

Plain cement concrete is equally strong in compression as well as in tension ✘ Slump test is performed to check concrete strength ✘ Curing of concrete is done for proper compaction of cement ✘ Fineness modulus is the index number expressing the relative sizes of both coarse and fine aggregates ✔

Sand consists of coarse particles of silica formed due to the disintegration of rocks ✘ The grains of sand are not affected by frost ✘ Sand beds are permeable and do not allow water to rise up between pores due to capillary action ✘ All the above ✔