Lec 1-6 (Build. Construct) -

Today’s Lecture: 

Building Construction I Building materials & Construction Today’s Lecture Monday 7 th Dec. 2009 08:00-9:45 am “ Building Construction I ”

Lecture Outlines (L-6): 

Lecture Outlines (L-6) walls (الجدران) Function of walls (وظائف الجدران) Requirements of walls Types of Walls (أنواع الجدران) Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls WALLS A wall is a continuous, usually vertical structure , thin in proportion to it's length and height, built to provide shelter as external walls and to divide spaces as internal partitions. Function of walls The prime function of external walls is to provide shelter against wind, rain, daily & seasonal variations of temperature and climatic changes. From view point of architecture, the wall gives the pattern of the building, expresses it's shape, colour and enclose the required space. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Requirements of walls To perform its function the wall should provide the following requirements: 1/ Strength and stability The wall should be strong enough to support it's own weight, weight of roofs, upper floors and to resist wind pressures as well as carrying life loads acting on it. It is obvious that strength of a wall depends on the quality and characteristics of the material used. Stability of a wall may be affected by foundation and soil movements. Chevron, square irregular, or serpentine construction adds to the stiffness of walls. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls 2/ Thermal Resistance For reasonable indoor comfort, a wall should provide resistance to excessive transfer of heat both from inside to outside and from outside to inside during hot or cold seasons. Adequate thermal resistance can be achieved through the use appropriate construction i.e., cavity walls and suitable building materials. Heat usually transfer by conduction , convection or radiation 3/ Resistance to weather & moisture penetration A requirement of building regulations is that the wall should adequately resist the passage of moisture to the inside of the building. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Moisture includes water vapor and liquid water. The use of dap proof courses (DPC) and membranes is a common technique for prevention of moisture penetration. External walls should protect the inside of the building from the different weathering condition ( rain, dust, sun heat ..etc. 4/ resistance to fire Walls generally should have good resistance to fire. To provide acceptable degree of safety against fire, regulations are concerned to: Provide adequate means of escape. Limit internal fire spread linings. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Limit internal fire spread structures. Limit external fire spread structures. Provide access and facilities for fire service. 5/ resistance to passage of sound and noise A wall should be designed to buffer noise and excessive unwanted sound through the use of sound absorbent materials or thick solid walls or cavity walls. 6/ Durability The wall must continue to serve the required function during the required period of time at the minimum possible maintenance. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Provide access and facilities for fire service. 7/ Appearance A wall should be designed to give a pleasant acceptable appearance to the building. Types of walls walls are classified into; 1/Structural walls 2/Non-structural walls Both structural and non- structural walls could either be a solid wall or a frame wall Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls A solid wall ( sometimes called a masonry wall), is constructed of either brick or block of stone or concrete laid in mortar with blocks to overlap in a bonding form. A solid wall of brick or block may be termed “ a block ” or masonry wall, while a continuous solid wall of concrete is termed a monolithic wall. A frame wall is constructed from a frame of small sections of timber, concrete or metal joined together to provide strength and rigidity . Over or between members of the frame, a skin or thin panels of some material is fixed to fulfill the functional requirements of the wall. Building Construction I Building materials & Construction

Building Elements- walls: 

Building Elements- walls Building Construction I Building materials & Construction

PowerPoint Presentation: 

Construction Management II Introduction to Economics Thanks for Your Attention