roof truss design
DESCRIPTION
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ROOF TRUSS DESIGN
TEKNIK PERAWATAN DAN PERBAIKAN GEDUNG
Created by :
Ade Nova (131144002)
Taufiq Prihantoro (131144025)
Geometry Structure
Span of Length = 18,54 m
Height = 2,29 m
Geometry Structure
MATERIAL PROPERTY
FRAME PROPERTY
FRAME PROPERTY
2L65X65X6
FRAME PROPERTY
2L75X75X6
FRAME PROPERTY
2L60X60X5
FRAME PROPERTY
L25X25X3
FRAME PROPERTY
L60X60X5
FRAME PROPERTY
L65X65X8
LOAD PATTERN
1,4D
1,2D + 1,6H + 0,8W
1,2D + 1,3W + 0,5H
COMBINATION
LOAD COMBINATION
LOAD COMBINATION 1
LOAD COMBINATION 2
LOAD COMBINATION 3
LOAD COMBINATION ENVELOPE
SDL
Roof
Weight of roof component= 50 kg/m2
Distance between truss = 6 m
Expanse length (L)= 9,32 m
Total joint (n)= 11
Total Weight= weight component x distance x Length
= 50 kg/m2 x 6 m x 9,32 m x 2 = 5592 kg
Weight per joint= Total weight / n
= 5592 kg / 11 = 508,36 kg 508 kg
Plafond
Weight of plafond component and hanger= (11 + 7) = 18 kg/m2
Distance between truss = 6 m
Expanse length (L)= 18,54 m
Total joint (n)= 11
Total Weight= weight component x distance x Length
= 18 kg/m2 x 6 m x 18,54 m = 2002.32 kg
Weight per joint= Total weight / n
= 2002.32 kg / 11 = 182,029 kg 182 kg
SDL (Superimposed Dead Load)
Wind
Press Wind
Horizontal
Minimum pressure of wind= 25 kg/m2
Distance between truss = 6 m
Expanse length (L)= 1,37 m
Total joint (n)= 2
Total Weight= weight component x distance x Length
= 25 kg/m2 x 6 m x 1,37 m = 205.5 kg
Weight per joint= Total weight / n
= 205.5 kg / 2 = 102.75 kg 103 kg
Press Wind
Oblique
Minimum pressure of wind= 25 kg/m2
Distance between truss = 6 m
Expanse length (L)= 9,32 m
Total joint (n)= 6
`
Total Weight= weight component x distance x Length
= 25 kg/m2 x 6 m x 9,32 m = 1398 kg
Weight per joint= Total weight / 6
= 1398 kg / 6 = 233 kg
Horizontal weight = sin W = sin 5,61 x 233 kg = 22,77 kg
Vertical weight = cos W = cos 5,61 x 233 kg = 231,88 kg
Sin W
W
Cos W
= 5,61
PRESS WIND LOAD
SIPPED WIND LOAD
DEFORMATION
ENVELOPE
ELEMENT FORCES
Shear 2-2 (kN)
ELEMENT FORCES
Axial (kN)
ELEMENT FORCES
Momen 2-2 (kNmm)
CAPACITY RATION
Masses and Weights
TABLE: Material List 2 - By Section PropertySectionObjectTypeNumPiecesTotalLengthTotalWeightTextTextUnitlessmKgfL60.60.5Frame1025.53503115.242L.60.60.5Frame1018.63199164.52L25.25.3Frame12.2862.53L65.65.8Frame1018.54202142.042L75.75.6Frame22.743236.432L65.65.6Frame814.68051167.31628.07Bill of Quantity
Cost of 1kg steel frame can estimated 1$ or Rp 12.576,00
Total of mass this truss is 628,07 kg
So, total cost of this truss is 628,07 * 12.576= Rp 7.898.608,32
Conclusion
The type of profile that we used are
2L60.60.5
L60.60.5
L25.25.3
L65.65.8
2L75.75.6
2L65.65.6