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DEFINITION A SPACE FRAME OR SPACE STRUCTURE IS A TRUSS-LIKE, LIGHTWEIGHT RIGID STRUCTURE CONSTRUCTED FROM INTERLOCKING STRUTS IN A GEOMETRIC PATTERN. SPACE FRAMES CAN BE USED TO SPAN LARGE AREAS WITH FEW INTERIOR SUPPORTS. SPACE FRAME A THREE DIMENSIONAL STRUCTURE. ASSEMBLED LINEAR ELEMENTS ARE ARRANGED TO TRANSFER THE LOAD. TAKE A FORM OF A FLAT SURFACE OR CURVED SURFACE. DESIGNED WITH NO INTERMEDIATE COLUMNS TO CREATE LARGE OPEN AREA. HISTORY OF SPACE FRAME SPACE FRAMES WERE INDEPENDENTLY DEVELOPED BY ALEXANDER GRAHAM BELL AROUND 1900 AND BUCKMINSTER FULLER IN THE 1950S BUCKMINSTER FULLERS FOCUS WAS ARCHITECTURAL STRUCTURES; HIS WORK HAD GREATER INFLUENCE. IT WAS DEVELOPED IN CALIFORNIA DURING THE 1960S AND INTRODUCED TO THE SOUTH AFRICAN MARKET IN 1982, SPECIFICALLY DEVELOPED FOR UNSTABLE SOIL CONDITIONS, THE PANELS FORM A MONOLITHIC STRUCTURE OFFERING SUPERIOR WALL STRENGTH IN WHICH NO CRACKING WILL OCCUR DESIGN METHOD SPACE FRAMES ARE TYPICALLY DESIGNED USING A RIGIDITY MATRIX. THE SPECIAL CHARACTERISTIC OF THE STIFFNESS MATRIX IN AN ARCHITECTURAL SPACE FRAME IS THE INDEPENDENCE OF THE ANGULAR FACTORS. IF THE JOINTS ARE SUFFICIENTLY RIGID, THE ANGULAR DEFLECTIONS CAN BE NEGLECTED, SIMPLIFYING THE CALCULATIONS. MATERIALS MANY MATERIALS ARE USED FOR THESE SPACE FRAMES STEEL TIMBER STEEL: THIS STEEL MATERIAL WHICH IS USED FOR THE SPACE FRAMES SUSTAIN MORE LOAD AND CARRY TONES OF WEIGHT. THIS STEEL IS MOSTLY USED IN NOW-A-DAYS IN A LONG SPAN STRUCTURES AND HAS TO BE MAINTAINED PROPERY. TIMBER: THIS TIMBER MATERIAL IS ALSO USED IN THE 19th CENTURY AND BY USING THIS MATERIAL THE MAINTANIANCE LEVEL IS BECOMING VERY HIGH. DESIGN METHODS MEMBERS ARE FIXED USING CONNECTORS DIFFERENT TYPES OF CONNECTORS ARE: NODUS CONNECTOR TRIODETIC CONNECTOR TUBALL NODE CONNECTOR HEMISPHERICAL DOME CONNECTOR LOAD DISTRIBUTION THE SIMPLEST FORM OF SPACE FRAME IS A HORIZONTAL SLAB OF INTERLOCKING SQUARE PYRAMIDS AND TETRAHEDRA BUILT FROM ALUMINIUM OR TUBULAR STEEL STRUTS. SPACE FRAMES CAN BE USED TO SPAN LARGE AREAS WITH FEW INTERIOR SUPPORTS. LIKE THE TRUSS, A SPACE FRAME IS STRONG BECAUSE OF THE INHERENT RIGIDITY OF THE TRIANGLE; FLEXING LOADS (BENDING MOMENTS) ARE TRANSMITTED AS TENSION AND COMPRESSION LOADS ALONG THE LENGTH OF EACH STRUT.

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