MODULE 3 (1) Flashcards
a structural framework composed of a series of straight members so arranged and fastened together that external loads applied to it will cause only direct stress in the members.
truss
Web-members subjected to tensile stresses
tension web-members
Web-members subjected to compression stresses
compression web-members
a member, design to resist either tension or compression
counterbrace
A member of a truss system which acts only for a particular partial loading, and which has a zero stress when the truss is completely loaded is called
counter
When a truss is supported at its ends by columns, the truss together with its columns, considered as a unit, is called
bent
The portion of the roof between two adjacent trusses is called
bay
A complete structural frame, or truss, is one in which is made up of the minimum number of members required to provide a complete system of triangles fixing the relative positions of a given number of panel joints
Complete Frame
One in which the number of members is less than that required by the equation given above.
Incomplete Frame
A redundant frame is one which contains more members than that required by the equation given above.
Redundant Frame
is the frame which is composed of such members, which are just sufficient to keep the frame in equilibrium, when the frame is supporting an external load.
perfect frame/ complete frame
A truss supported at one end-joint and other joint not an end-joint.
Overhanging end span
A truss supported at each end-point.
Simple Truss
A truss where the entire support is at one end only.
Cantilever span
consist of two columns and a beam or girder that are rigidly connected at their joints.
Rigid frames
are formed and site cast in the same manner as concrete floor systems.
Reinforced concrete roof slabs (roof decks)
powder form waterproofing compound mixed with the cement-aggregate mixture.
Type of waterproofing
Integral type
a hot or cold membrane applied to the surface; for example asphalt paper laid with hot asphalt or self sealing asphalt paper.
Type of waterproofing
Membrane type
a fluid applied elastomeric coating formulated to waterproof and preserve the substrate of concrete, wood, and steel. The wide temperature range, withstands extreme thermal movement, settling and cracking; resists puncture and tearing; and can be applied by roller, brush, spray or squeegee.
Types of Waterproofing
Fluid type
powder form waterproofing compound mixed with water and applied by brush to the surface to be waterproofed.
Types of Waterproofing
Cementitious type
A flexible blanket- type thermal insulation, commonly used as insulation between studs or joints in frame construction; also used as an acoustical material or a component in sound-insulating construction. Usually made from rock, slag, or glass fibers. Sometimes has a vapor barrier on one side or is entirely enclosed in paper with a vapor barrier on one side.
Batt Insulation
fibrous type and granular type
Types of Thermal Insulators
Loose Fill
is made from fibrous materials such as mineral wool, wood fiber, cotton fiber or animal hair and made into batt[1] or boards.
Types of Thermal Insulators
Blanket Insulation
stiff and inelastic such as foamed plastic, cellular glass, foamed concrete, etc. Example is STYROFOAM
Types of Thermal Insulators
Block or Rigid Slab Insulation
