STRUCTURAL CALCULATION REPORTRESIDENTIAL HOME

PREFABRICADOS Y MODULARES DE

MONTERREY

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. ________________________________________________________________________________________

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.

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

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

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

5. Structural Analysis Program SAP-2K

Consideration 1

Walls and slab casted monolithically simply supported on the foundation.

Last Moments in Slab (M11)

SLAB

Shear in Slab (V13)

Last Moments in Wall (M22)

Last moments in Walls (M11)

LATERAL WALLS 1

Shear in the Slab (V23)

Shear in Walls (V 13)

Last moments in Slab (M22)

Last moments in Walls (M11)

LATERAL WALLS 2

Shear in wall (V23)

Last Moments in Walls (M22)

Shear in Wall (V13)

Last Moments in Wall (M11)

POSTERIOR WALL

Shear in wall (V23)

Last moments in walls (M22)

Shear in Wall (V13)

Foundation Slab simply supported on the walls

Shear in wall (V23)

Last moments in foundation Slab (M11)

Last moments in the foundation slab (M22)

Shear in foundation slab (V13)

Shear in foundation slab (V23)

Consideration 2

Walls and Slabs cast monolithically, modeled inconjuction with the foundation, supported onsprings.

WALL

Last moments in slab(M11)

Last moments in slab (M22)

Shear in slab (V13)

LATERAL WALLS 1

Shear in slab (V23)

Last Moments in wall (M11)

Shear in wall (V13)

Last moments in wall (M22)

LATERAL WALLS 2

Last moments in walls(M11)

Shear in wall (V23)

Shear in wall (V13)

Last Moments in wall (M22)

POSTERIOR WALL

Shear in wall (V23)

Last moments in wall (M11)

Last Moments in Slab foundation (M11)

Slab foundation in conjuction with the walls

Shear in wall (V23)

Annex BDesign of Structural Elements

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

Design of concrete slab M22

Maximum positive moment

General Notes

Caculation of area of steel

Maximum negative moment

General Notes

Calculation of area of steel

Maximum positive moment

General Notes

Calculating the area of steel

General Notes

Maximum negative moment

Calculating area of steel

Design of slab foundation M22

Maximum positive moment

General Notes

Calculating of area of steel

Maximum negative moment

General Notes

Calculating area of steel

Shear resistance of Cellular Concrete

Revision of Shear

Shear Resistance

Actual Shear

Shear resistance in high strenth concrete

Actual Shear

Shear resistance

Design of slab foundation M11

Maximum positive moment

General Notes

Calculating area of steel

Maximum Negative moment

General Notes

Calculation of area of steel

Design of foundation slab M22

Maximum positive moment

General Notes

Calculating the area of steel

General Notes

Calculating area of steel

Maximum negative moment

PLANS