3. General Design Requirements
Room Window Area (in m²) Percentage
Room in dwellings 11 16
Ancillary rooms and
corridors
7 10
Offices and Workshops 15 25
Exhibition Halls 25 35
Conference Halls and
Lecture Rooms
20 25
Store rooms 10 12
4. Criteria for Designing Windows
Must afford the occupant adequate natural lighting
Must afford adequate visibility to the exterior
Quality and profile of the components must afford
satisfactory protection
Must offer protection against burglary and intrusion of human
beings and animals
Operation of moving parts must not endanger the safety of
users
5. Must promote hygienic conditions
Must provide acoustic and thermal insulation (depends on
special climatic condition
Must facilitate the replacement of parts
General maintenance must not be expensive
6. Structural Components of Window
a. Cover Fillet
b. Lintel
c. Head of Frame
d. Frame
e. Light
f. Sash
g. Bottom rail
h. Transom
i. Mullion
j. Jamb of aperture
k. Sill
l. Window board
m. Top rail of sash
n. Light
o. Glazing bar
p. Dividing member
q. Stile
r. Sash
s. Bead
t. Weather moulding
u. Flashing
v. Condensation gutter
w. apron
7. Methods of Window Openings
Class I
(a)Fixed Windows
used in rooms with airconditioning
11. Class IV
Horizontally Sliding Windows
Class V
Vertically Sliding Windows
Composite-action Windows
(a) Sliding-axis horizontally hinged casement window, top-hung (fig. 95)
(b) Sliding-axis vertically hinged casement window, bottom-hung (fig. 96)
14. Width Measurements
The width of the door must be related to the functions for
which the door has to perform.
Standard width for interior doors for low-cost housing: 70 cm
Service door: 75 cm
Front Door: 80-90 cm
Bathroom Door: 60-65 cm
15. Height Measurements
Height of door is related to normal human height
Standard Height for normal human height: 170 cm (+20 cm
for taller people)
Standard height of internal doors for low-cost housing: 190-
210 cm
Entrance Door: 200- 220 cm
16. Representation of Doors
Elevation with nominal measurements and specifitcation of
type
Indication of heaight from floor to lintel
Direction of operation
Type of fittings
17. Specification of Doors Types
Type Height (cm) Width (cm) Characteristics
A 225 90 Glazed
B 225 80 Part-glazed
C 210 70 Flush
D 210 65 Flush with Ventilation
18. Types of Doors
(a) Flush Door
A. Solid Flush Door
B. Flush Door with small light
(height smaller than width)
C. Flush door with large light
(height larger than width)
19. (b) Panelled Door
A, B, C. Panels of equal sizes
D, E. Panels of diferrent sizes
28. Things to consider
Designer must know the atmospheric condition
Designer must simplify manufacturing operations
Designer must give the design of doors and windows showing
height, shape, and openings
Must made a simple design that would not consume so much
time making
Design must give exact definitions
29. Reference
The Pre-fabricatiom of Wooden woods and Windows, Dept. of Ecomnomic and
social Affairs; New York 1973
Building Construction Illustrated Secon Edition, Francis D.K. Ching, Cassandra
Adams
Build (Australia); Types of Doors