Reliance Retail Limited

CONTENTS1. Purpose. 4

2. The Facility . 4

3. Codes and Standards. 44. Grade of Concrete & Steel... 55. Dead loads . 66.Imposed Loads.. 67. Wind Loads .78. Seismic Loads 79. Load Combinations 710. Method of Design.... 811. Specifications and Make of Materials . 812. Software Used .. 813. Cover to Reinforcement. 814. Foundation System.. . 91. PURPOSE

This document gives the entire structural requirement relating to the proposed 1Factory Construction at AndhraPradesh and broadly outlines the assumption made in PEB and RC structures.2. THE FACILITYThe present structure based on the architectural concept parts.

MAIN FACTORY BUILDING: Metal works and ware house area is ground floor PEB structure.The structure will be based on reactions from Vendor and foundation is as per the Soil report.

ADMIN AREA: The structure will be framed RCC structure. The superstructure is designed as conventional beam & slab type for all areas.

UTILITY AREA: The structure will be framed RCC structure with foundations as per Soil report.3. CODES AND STANDARDS provisionStandardDescription

IS 875 Part I 1987-Unit weights of materials

IS 875 Part II 1987 -Imposed load.

IS 875 Part III 1987-Wind loads.

IS 875 Part V 1987-Combination of loadings.

IS 456 2000-Code of practice for design and construction of reinforced concrete structures.

IS1892 1979-Sub surface investigation for foundation

IS 8001 Part I-Code of practice for computing Settlement - shallow foundations.

IS 1893 part I 2002-Code of practice for earth quake resistant design.

IS 13920 1993-Code of practice for ductile detailing.

SP 16 -Design aids for IS 456-1978/2000.

IS 4326 -Code of practice-earth quake resistant design and construction of buildings

IS 8112 2013-Code of practice for 43 grade OPC cement specification

IS 12269 2013-Code of practice for 53 grade OPC cement specification

IS 3370 (Part 2) - 2009-Code of practice for Concrete structures for storage of liquids

IS 800 - 2007-Code of practice for General construction in steel

References are not limited to the above; wherever it is deemed fit, additional references will be made.

4. GRADE OF CONCRETE & STEELCONCRETE: -

1. MAIN FACTORY: a .Footing, plinth beam, column

- M 25b. All other secondary structural members

- M 25 (Lintel, sunshades, etc.)OFFICE AREA: a. Footing, columns and plinth beam

- M 30b. Conventional slab and beams

- M 30

REINFORCEMENT:

Reinforcing bars grade, Fe 500 is used

STRUCTURAL STEEL:

For Structural steel works, Fy 250 grade is used.

5. DEAD LOADS

Computed self weight of structural elementsConcrete density

=25 KN/m3

Masonry work

=20 KN/m3Floor finish

=1.0 KN/m2False ceiling & partition walls

=2.0 KN/m2Dead load on PEB Frame (Double skin Roof) = 0.18KN/sqm(Self weight of the frames are considered separately as actuals)

6. IMPOSED LOADS IS 875 part II is followed for the loadings based on Utility of the areas.Office area

- 3.00KN/m2Work Shop

- 4.00KN/m2Parts Store

- 5.00KN/m2Lobby

- 4.00KN/m2Utility Room

- 5.0KN/m2Platform area

- 5.00KN/m2Live load on PEB Frames &Purlin

-0.75 KN/ m2Except for the user defined areas in all other areas the live load has been taken in accordance with the IS-875 loading standard. Collateral load on the PEB frames and purlins to be considered as 100kg/sqm for false ceiling and utility supportsWall loading shall be as per locations shown in architectural drawings. Any future walls if required to be provided, shall be constructed in light-weight material.7. WIND LOADS Wind Loads shall be as per IS 875 (part 3) 1987 Basic wind speed considered = 50 m/sec.

Probability / Risk coefficient factor k1 =1.0

K2 shall be based on terrain category & building/structure classification.

Topography factor k3 =1.08. SEISMIC ZONE III, ZONE FACTOR, Z= 0.16Seismic loads and earthquake resistant design shall be as per IS 1893 (part 1). Importance factor I = 1.0 . Earthquake forces shall not be considered to act at the same time as wind forces. Direction of earthquake loading and combination thereof shall be as per clause 6.3.2 of IS 1893 (part 1). In accordance with the provisions of IS-1893-2002, the building is fall under Zone III. Accordingly the Zone factor has been chosen.Importance factor (I)

: 1

Response reduction factor (R) : 5.0 Type of structure for PEB : 2 Type of structure for RC : 1

Damping ratio for PEB :2% For RC : 5%

9. LOAD COMBINATIONSLoad combinations shall be as per IS 875 (part 5). Following being the minimum,Factored combinationa) 1.5(DL+LL)b) 1.2(DL+LL+WL)c) 0.9DL+1.5WL d) 1.2(DL+LL+EL)e) 1.5(DL+EL)

f) 0.9DL+1.5ELWhere DL is Dead Loads

LL is Live Loads

WL is Wind Loads

EL is Seismic Loads.10. METHOD OF DESIGNCONCRETE: Limit state method in accordance with IS 456:2000 for buildings.

Elastic method in accordance with IS 3370 for liquid retaining structures.

STEEL : Elastic design in accordance with IS 800-2007

11. SPECIFICATIONS AND MAKE OF MATERIALS

1. Cement : OPC any standard manufacture as per IS. 8112 or IS. 12269 or IS 456. Any other cement as permitted by IS 456.2000

2. Reinforcement : Reinforcing bars grade, Fe 50012. SOFTWARE USEDSTAADpro V8i13. COVER TO REINFORCEMENTAs per IS 456-2000, Page No.18, Clause 8.2.2.1, Table 3, Moderate environment exposure condition is considered.Nominal cover to reinforcement depends on two factors:

1. Based on Durability Condition (As per IS 456-200, Pg.47, Table 16)a. For Moderate Condition = 30mm

2. Based on the Requirement of 2Hrs. of Fire Resistance

(As per IS 456-200, Pg.47, Table 16A)a. Footing= 50 mm

b. Column= 40 mm

c. Slab= 30 mm

d. Beams= 35 mm

The maximum value of the above two conditions is consider for design.14. FOUNDATION SYSTEM

The support reactions from Vendor are considered for the foundation design. As per the soil report, the SBC is considered as 250 kN/m2 for the Isolated Footings at 1.5m below Natural Ground level.PAGE