Explore topic-wise InterviewSolutions in .

Right option is (a) Skylight

To EXPLAIN: The common rafters are suitability trimmed and the skylight is erected on the curb frame. As Skylight are mainly mean for light, they are usually provided with the fix glass panels. The opening of skylight is PROPERLY treated by LEAD flashing to make WATERPROOF and roof AREA surrounding the opening.

Right choice is (b) Sash

Best explanation: Usually the ratio of glazed or sash portion to panelled portion is 2:1. The GLASS is received into the REBATES provided in the wooden Sash BAR and secured by nails and putty or by wooden beads FIX to the FRAME.

Correct CHOICE is (d) 10 mm

Easiest explanation: The width and height of an opening is INDICATED by NUMBER of MODULES where each module is of 100 mm. The height of opening for door is considered from below the floor finish to the bottom of lintel.

Right answer is (B) Post

To elaborate: The above figure represents a door frame. In this figure, A represents the HEAD, B represents post, C represents rebate and D represents holdfast. The post is the vertical member of a door frame. It is ALSO KNOWN as the jamb.

Right choice is (b) Sash window

Best explanation: The panels are FULLY glazed in a sash window. It is a type of casement window. It CONSISTS of sash bars to which glass panes are FIXED by means of glazing BEADS.

The correct answer is (c) 20%

For explanation: The minimum area of windows should be 20% of the floor area in case of public buildings. CLIMATIC CONDITIONS such as humidity and temperature are also taken into ACCOUNT while considering the selection of location of a window in a public BUILDING.

Correct CHOICE is (b) T-SHUTTER

The explanation: Garnet hinge is also KNOWN as T-shutter. This type of hinges is used for ledged and battened doors, ledged and braced doors etc. A garnet hinge has two arms. The long arm is screwed to the shutter while the short arm is screwed to the FRAME.

The CORRECT OPTION is (d) TIMBER PANEL

Explanation: The above figure is of a partly glazed and partly panelled double leaf door. In this figure, A represents glass panel, B represents lock rail and C represents timber panel. In partly glazed doors, the ratio of panelled portion to the glazed portion is 1:2.

Right choice is (b) Bottom sill of the window

Easy explanation: Members of frames of timber DOORS and WINDOWS are USUALLY made of the same SPECIES of timber except in the case of softwood frames. In softwood frames, the bottom sill of the window shall be of hardwood.

The correct choice is (a) Rebate

To explain: Rebate is the depression created inside the door frame in order to RECEIVE the door shutter. The WIDTH of the rebate cut is about 12 mm and its depth is KEPT equal to the thickness of the shutter.

The correct CHOICE is (a) Style

Explanation: The vertical outer member of the shutter is known as style. Top RAIL, lock rail and BOTTOM rail are the HORIZONTAL members of a door shutter.

Right answer is (a) Double shutter

The best explanation: In the designation 10 DT 21, the LETTER D stands for door and the letter T stands for double SHUTTERS. It tells that the WIDTH of the door opening is 10 modules i.e. 1000 mm and the height is 21 modules. Each module is of 100 mm.

The correct answer is (d) Panel

The explanation: Whereas, Holdfast is generally in the form of a mild steel FLAT bar of SECTION 30 mm x 6 mm and the length of 200 mm. The THREE numbers of such holdfast are provided on each side of the door FRAME.

Right option is (a) Lantern lights

The best I can explain: Lantern Windows or Lantern lights may be SQUARE or rectangular or curved. The glass PANEL are general fixed. But if ventilation is also REQUIRED in addition to light, the Pivoted Windows may be PROVIDED.

The correct answer is (b) False

The BEST I can explain: According to the Indian STANDARD, all the members of a door should be exactly at right angles. The right ANGLE of these members shall be checked from their INNER surfaces.

Correct answer is (b) Casement windows

Best explanation: The construction of a Casement window is similar to the door construction and it consists of a FRAME, STYLES, rails, VERTICAL and horizontal Sash bars and sometimes, it also includes MULLION and transoms.

The CORRECT choice is (a) Ledged, FRAMED and braced

To explain: Ledged, framed and braced TYPE of door is more durable and STRONGER and hence it can be ADOPTED for external use. The braces should be inclined upward form the hanging side.

Right choice is (c) 20 cm

Best explanation: The horizontal LENGTH of the holdfast is generally 20 cm. The DIMENSIONS of the section of the holdfast are 30 mm X 6 mm.

Correct option is (a) True

For explanation: Sills are NORMALLY not provided in door frames. They are generally provided for WINDOW frames only and are DEFINED as the lowermost part of a window frame.

Right choice is (d) Latch

Explanation: Latch is fixed to the inside of the DOOR while aldrop and hasp and staple bolts are fixed in EXTERNAL doors. A latch is generally made of malleable IRON or bronze. It consists of a level which is pivoted at one of its ENDS.

Correct choice is (d) Back flap HINGE

For EXPLANATION I would SAY: Back flap hinge is used where there are thin shutters. The flanges of these TYPE of hinges are wider than the flanges of the butt hinges.

Correct ANSWER is (a) WOOD

The explanation is: The usual materials for DOORS and windows are wood, glass, plywood and METALS. The glass is used for panels to admit more light. The plywood can be used as a covering material. The metals, such as aluminium and STEEL, now commonly used, especially for the windows.

The correct ANSWER is (d) Double-hung

To explain I would say: Double-hung Windows is so ARRANGED that the UPPER sash moves in the downward direction, thus opening at the TOP and the lower Sash moves in the upward direction, thus opening at the BOTTOM.

Right ANSWER is (a) Height = (WIDTH + 1.2) metres

The best EXPLANATION: The height and the width of a DOOR are RELATED in a way such that the height of the door is 1.2 metres more than the width of the door. For example, if the width of a door is 0.8 metres, then its height will be (0.8 + 1.2) m i.e. 2 metres.

Right CHOICE is (c) Holdfasts

For explanation I would say: Holdfasts are USED to fix the frame in the OPENING of the wall. These are mild steel bars and their PROPER PAINTING must be ensured before fixing them.

The CORRECT choice is (b) False

To elaborate: Nar-madi hinge is used for heavy doors. Other TYPES of HINGES that can be used for heavy doors are strap hinges, garnet hinges etc.

The correct choice is (c) Pivoted

To explain: The FRAME of a Pivoted window is just similar to CASEMENT window EXCEPT that no rebates are provided. The windows MAYBE vertically pivoted or horizontally pivoted.

The CORRECT option is (d) Flush

For explanation I would say: There are two varieties of flush DOORS i.e. frame flush door and a laminated flush door. A FRAMED flush door consists of styles, rails, HORIZONTAL RIBS, vertical ribs and plywood. A laminated flush door consists of styles, rails, laminated core and plywood.

Right ANSWER is (a) 0.5 m^2

The EXPLANATION: In panelled doors, if panels are made up of TIMBER, it must be kept in mind that the maximum area of a single panel of timber should not be more than 0.5 m^2. It must also be ensured that its MINIMUM thickness should be 15 MM.

Right ANSWER is (b) Ledged and FRAMED

Easy explanation: In Ledged and framed doors, the styles are generally 100 mm wide and 40 mm THICK. The BATTENS and ledges are PROVIDED as usual.

The correct option is (c) They cost more than timber FRAMES

Explanation: Concrete frames are NOWADAYS replacing timber frames in URBAN areas due to large costs of timber frames. ALSO, timber frames decay very readily. Concrete frames are CHEAPER than timber frames as well as than iron frames.

Correct choice is (d) Door OPENING

To explain: The designation 8 DS 20 DENOTES a door opening with single shutter where the letter D stands for door opening and the letter S stands for single shutter. It tells that the width of the door opening is 8 modules i.e. 800 mm and height is 20 modules i.e. 2000 mm.

The correct CHOICE is (b) Jamb

The explanation: Jamb is the VERTICAL face of an OPENING in the wall which SUPPORTS the door frame. Jamb is essential in order to open the door properly. In case of a WINDOW, it is known as side jamb when it is along the sides of the window and when along the top, it is known as the head jamb.

The correct choice is (a) Double shutter

To explain: In the designation 10 WT 13, the LETTER W STANDS for window OPENING and the letter T stands for double shutters. It tells that the width of the opening is 10 modules and height is 13 modules.

Right CHOICE is (c) Number of bricks USED

For explanation I would say: There are VARIOUS factors that are used to DETERMINE the selection of the location of a window. These INCLUDE the size of the room, the location of the room, the utility of the room and the direction of the wind.

Right OPTION is (d) Metal windows

To explain: The metal used in the construction maybe mild STEEL, bronze or other alloys. The Steel Windows are manufactured in STANDARD sizes and are WIDELY used metal Windows. The metal frame maybe fix directly to the wall or it MAY be fixed on a wooden frame.

Right choice is (d) Head

Explanation: WHEREAS, Horn is a HORIZONTAL projection of head or sill beyond the face of the frame. It facilitates the fixing of the frame on the WALL opening and its LENGTH is about 100 mm to 150 mm.