Structural Calculation May 2009 English
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Transcript of Structural Calculation May 2009 English
![Page 1: Structural Calculation May 2009 English](https://reader034.fdocuments.net/reader034/viewer/2022052222/5554f292b4c90566278b5144/html5/thumbnails/1.jpg)
STRUCTURAL CALCULATION REPORTRESIDENTIAL HOME
PREFABRICADOS Y MODULARES DE
MONTERREY
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Background In this Calculation Report the design for the structure of a resedentialhome is provided by Prefabicados y Modulares de Monterry, S de R.L. DE C.V.
For the design of this structure the following design guidelines were considered, in accordance to the plans provided by PyMM.
1 Solid Walls and Slabs of Lightweight Concrete2 Load Bearing Walls3 Foundation Slabs4 Live load of Roof of 170 kg/m2 5 Additional Dead Load of Slab of 170 kg/m2
This report is presented in a descriptive format, giving special emphasis indescribing the criteria of analysis and the designs utilized in this structure.A annex to the main body of the report is also presented, where the resultsof the computer simulations are itemized for the structural design.
2 Description of the Structure The structuring of the home consists of prefabricated walls and slabs (figure1), Foundation slabs. (Figure 2), Walls, slabs and Foundation Slabs areassembled, (Figure 3), Facades (Figure 4) and a spare room can be attached onsite with solid concrete walls and slabs (Figure 5) The walls and the slab arecast monolithicly with lightweight concrete, the foundation slab is castwith high strength concrete and the facades are cast with lightweightconcrete. Once cast the components are connected to form a house. ________________________________________________________________________________________
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3 Dimensional View of the Slabs and Walls
3 Dimensional view of the Slab and Walls. The slab and walls arecast monolithically with concrete with the density of 1.400kg/m3,and with the Strength of 130kg/cm2 with a thickness of 12cm, thewalls were articulated at the bottom where it connects to the foundation slab.
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3 Dimensional View of the Foundation Slab
The foundation slab is cast with 300kg/cm2 concrete, the supports for the slab are shown supporting the connectionswith the walls of the home in its first state of load
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3 Dimensional View of the Assembly
The assembly for the walls, slab and foundation slab is modeledin what is considered in its final state, when they are assembled onsite in the model they are supported on springs whose stiffeness issimilar to the final terrain. Attached to the foundation slab.
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3 Dimensional View of the Facades
The Facades are simply modeled supported on the connectionpoints where they are attached to the wall plates of the home,cellular concrete was used with a density of l.400/m3
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3. Design Criteria
For the final dimensioning of the structural elements the guidelines set by PyMM were taken into account for the design. The criteria used in the designare:
a) The elements of the concrete ; were carried out following the recommendations of ACI-318-05, ACI-523.2R-96 Y ACI-213R-99
b) High strength concrete was considered with the compression strength of 300 kg/cm2, 150 kg//cm2 and for the cellular concrete of 130kg/cm2.
c) Reinforcement steel of 4200kg/cm2 was considered.
4. Estimation of design loads and combinations
Presented below to calculate the loads considered for the design of the structure and foundation, as well as combination of loads used in the structural analysis.
4.1 Dead Load
It is considered the as the weight of the main structure, concrete plate, clayblock, reinforcement steel and others.Following way:
Concept Weight (Kg/m2)
Weight of the plate (cellular concrete) 175
Weight of the plate (high strength concrete) 300
Additional Dead Load
Weight of tile and mortar 55
Weight of dividing walls 100
Weight of finishing 15
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4.2 Live Load
A mezzanine of three walls is considered a live load.
Live Load of 170 kg/m2
4.3 Design Combinations
Several combinations of loads were considered in the designing of the struct--ural elements. The basic loads used and combinations for the main structurewere included in the analysis, while the loads used for the foundations were doneseparately, both combinations are shown together.
Basic Loads
Typical Load Identification in model
Dead Load (weight) Dead
Over Dead Load SD
Live Load LIVE
Combinations for the design of the superstructure
Typical Load Identification in model
DEAD + LIVE SERV
1.2 DEAD + 1.6 LIVE 12D16L
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5. Structural Analysis Program SAP-2K
Consideration 1
Walls and slab casted monolithically simply supported on the foundation.
Last Moments in Slab (M11)
SLAB
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Shear in Slab (V13)
Last Moments in Wall (M22)
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Last moments in Walls (M11)
LATERAL WALLS 1
Shear in the Slab (V23)
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Shear in Walls (V 13)
Last moments in Slab (M22)
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Last moments in Walls (M11)
LATERAL WALLS 2
Shear in wall (V23)
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Last Moments in Walls (M22)
Shear in Wall (V13)
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Last Moments in Wall (M11)
POSTERIOR WALL
Shear in wall (V23)
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Last moments in walls (M22)
Shear in Wall (V13)
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Foundation Slab simply supported on the walls
Shear in wall (V23)
Last moments in foundation Slab (M11)
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Last moments in the foundation slab (M22)
Shear in foundation slab (V13)
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Shear in foundation slab (V23)
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Consideration 2
Walls and Slabs cast monolithically, modeled inconjuction with the foundation, supported onsprings.
WALL
Last moments in slab(M11)
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Last moments in slab (M22)
Shear in slab (V13)
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LATERAL WALLS 1
Shear in slab (V23)
Last Moments in wall (M11)
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Shear in wall (V13)
Last moments in wall (M22)
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LATERAL WALLS 2
Last moments in walls(M11)
Shear in wall (V23)
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Shear in wall (V13)
Last Moments in wall (M22)
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POSTERIOR WALL
Shear in wall (V23)
Last moments in wall (M11)
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Last Moments in Slab foundation (M11)
Slab foundation in conjuction with the walls
Shear in wall (V23)
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Annex BDesign of Structural Elements
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Design for concrete slab M11
Maximum positive moment
General Notes
Calculation of area of steel
Maximum negative moment
General Notes
Calculation of area of steel
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Design of concrete slab M22
Maximum positive moment
General Notes
Caculation of area of steel
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Maximum negative moment
General Notes
Calculation of area of steel
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Maximum positive moment
General Notes
Calculating the area of steel
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General Notes
Maximum negative moment
Calculating area of steel
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Design of slab foundation M22
Maximum positive moment
General Notes
Calculating of area of steel
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Maximum negative moment
General Notes
Calculating area of steel
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Shear resistance of Cellular Concrete
Revision of Shear
Shear Resistance
Actual Shear
Shear resistance in high strenth concrete
Actual Shear
Shear resistance
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Design of slab foundation M11
Maximum positive moment
General Notes
Calculating area of steel
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Maximum Negative moment
General Notes
Calculation of area of steel
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Design of foundation slab M22
Maximum positive moment
General Notes
Calculating the area of steel
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General Notes
Calculating area of steel
Maximum negative moment
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PLANS
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