Silo Structure Rev 3

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Project : Holcim Cement (Bangladesh) Ltd. Project Bistaar

Design Calculation of Cement Silo

Document No. : DESIGN-CS-HBL-R3

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Index:

1. Introduction

Page-3

2. Regulation

Considered

Page-4

3. Material

Page-5

4. Structure General Arrangement

Page-6

5. Primary Loads and Load Combinations

Page-15

6. Input : Loading Diagram

Page-42

7. Input: Node & Member Diagram

Page-72

8. Output: STAAD Input File

Page-97

9. Output: Code Check Ratio of members

Page-140

10. Output: Silo Plate Design

Page-145

11. Output: Deflection Diagram

Page-154

12. Connection Design

Page-168

13. Foundation

Loading

Page-177

Revision-3 SUMMARY:

1. Silo (bottom portion) & Hopper Plate Thickness increased from 16mm to 20 mm.

2. Silo & Hopper Plate specification revised to ASTM A36 grade plate of fy = 245

MPa.

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INTRODUCTION

The structures included in this report start from the concrete wall top that supports our SILO

structure and that is placed at a height from the ground at elevation + 17.500. The installation

includes one attached CIRCULAR silo of height of 20.518 m., internal diameter 16.00m and hopper

of height 10.787m.

This Silo hopper is concentric with silo centreline.

The entire structure will be designed with structural profiles with plates welded to them to

support the pressure of the material.

Silo roof is also supporting the Air Slide Gallery structure connecting this New Silo and the

existing Silo.

At one side of Cement Silo a steel structure is self standing, taking NO support from this cement

silo, for Bucket Elevator and Stair to access the Silo Roof.

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REGULATIONS CONSIDERED

The following Regulations were used in this Project for calculation basis purposes:

• Eurocode 0: Basis of Structural Design.

• Eurocode 1: Actions on Structures.

Part 1-1: General Actions – Densities, Self-weight, Imposed Loads for

buildings.

Part 1-4: General Actions – Wind Actions.

Part 4: Silos and Tanks.

• Eurocode 3: Steel structures’ project.

• Eurocode 8: Seism resistant project arrangements.

Part 1-1: General regulations. Seism actions and general structure

requirements

Part 1-2: General regulations. General regulations for buildings.

Part 1-3: General regulations. Specific regulations for different materials

and elements

• HBL/2011-11/03 Standard Design Criteria: June 2010 - CONTRACT PART IV-1-4

: CIVIL AND STRUCTURAL WORKS

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MATERIALS

The following structural materials are considered in this project:

Steel in structures: ASTM A36/KS D3503 SS 400

−

f

y

= 2

45 N/mm

2

−

f

u

=

400 N/mm

2

−

E = 2,1 x 10

5

N/mm

2

Steel in screws for structures: 8.8

−

f

y

= 640 N/mm

2

−

f

u

= 800 N/mm

2

−

E = 2,1 x 10

5

N/mm

2

The partial safety coefficients of the properties of the materials used are:

Steel :

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3D Rendered View

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3D Rendered View - AIR SLIDE GALLERY TO EXISTING SILO

Note: Separate STAAD file has been

prepared to calculate loads on Silo from

Air Slide Gallery to Existing Silo.

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Part Copy of

Mechanical Input

Drawing

Note: This bucket elevator will be a

separate tower, self standing from

ground and without any support

from Silo structure

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Part Copy of

Mechanical Input

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Part Copy of

Mechanical Input

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Part Copy of

Mechanical Input

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Part Copy of

Mechanical Input

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X

Y

Z

Whole Structure

Platform at +7.500m

Air Slide on

Silo Roof

Waist Ring Beam

(24 nos. equally space

support with concrete wall)

Silo Roof

Ring Beam

Concrete wall

700mm thick

below Waist Ring

Beam

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X

Y

Z

AIR SLIDE GALLERY TO EXISTING SILO

Support on Silo Roof Ring Beam (Slot

hole connection along the Air Slide

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LOAD COMBINATIONS

Load combinations are based on following tables : ALL LOAD COMBINATIONS OTHER THAN SEISMIC

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Basic Load Cases

Number Name

11 DEAD LOAD

12 LIVE LOAD

13 EQUIPMENT LOAD EXCEPT MATERIAL L

21 SILO FILLING : PHF

22 SILO FILLING : PWF

23 SILO FILLING : PNF

24 SILO FILLING : PTF

25 SILO FILLING : PATCH

31 SILO DISCHARGE : PHE

32 SILO DISCHARGE : PWE

33 SILO DISCHARGE : PNE

34 SILO DISCHARGE : PTE

35 SILO DISCHARGE : PATCH

50 EQUIPMENT LOAD INCLUDING SILO MA

51 MONORAIL CASE-1 52 MONORAIL CASE-2 53 MONORAIL CASE-3 54 MONORAIL CASE-4 61 WIND LOAD-Z 62 WIND LOAD X 71 SEISMIC LOAD X 72 SEISMIC LOAD Z

Combination Load Cases

Comb. Combination L/C Name Primary Primary L/C Name Factor

101 DL+LL+EQL1 11 DEAD LOAD 1.35

12 LIVE LOAD 1.50

13 EQUIPMENT LOAD EXCEPT MATERIAL L 1.50

21 SILO FILLING : PHF 1.50

22 SILO FILLING : PWF 1.50

23 SILO FILLING : PNF 1.50

24 SILO FILLING : PTF 1.50

25 SILO FILLING : PATCH 1.50

12 LIVE LOAD 1.50

31 SILO DISCHARGE : PHE 1.50

32 SILO DISCHARGE : PWE 1.50

33 SILO DISCHARGE : PNE 1.50

34 SILO DISCHARGE : PTE 1.50

35 SILO DISCHARGE : PATCH 1.50

111 DL+MR1+LL 11 DEAD LOAD 1.35 51 MONORAIL CASE-1 1.50 12 LIVE LOAD 1.50 112 DL+MR2+LL 11 DEAD LOAD 1.35 52 MONORAIL CASE-2 1.50 12 LIVE LOAD 1.50 113 DL+MR3+LL 11 DEAD LOAD 1.35 53 MONORAIL CASE-3 1.50 12 LIVE LOAD 1.50 114 DL+MR4+LL 11 DEAD LOAD 1.35 54 MONORAIL CASE-4 1.50 12 LIVE LOAD 1.50

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Combination Load Cases Cont...

61 WIND LOAD-Z 0.75

132 DL+LL+EQL1-WLZ 11 DEAD LOAD 1.35

12 LIVE LOAD 1.05

61 WIND LOAD-Z -0.75

133 DL+LL+EQL1+WLX 11 DEAD LOAD 1.35

12 LIVE LOAD 1.05

62 WIND LOAD X 0.75

134 DL+LL+EQL1-WLX 11 DEAD LOAD 1.35

12 LIVE LOAD 1.05

62 WIND LOAD X -0.75

135 DL+LL+EQL2+WLZ 11 DEAD LOAD 1.35

12 LIVE LOAD 1.05

61 WIND LOAD-Z 0.75

12 LIVE LOAD 1.05

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Combination Load Cases Cont...

62 WIND LOAD X 0.75

12 LIVE LOAD 1.05

61 WIND LOAD-Z 1.50

12 LIVE LOAD 1.05

62 WIND LOAD X 1.50

12 LIVE LOAD 1.05

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Combination Load Cases Cont...

12 LIVE LOAD 1.05

62 WIND LOAD X 1.50

12 LIVE LOAD 1.05

62 WIND LOAD X -1.50 151 DL+WLZ 11 DEAD LOAD 1.35 61 WIND LOAD-Z 1.50 152 DL-WLZ 11 DEAD LOAD 1.35 61 WIND LOAD-Z -1.50 153 DL+WLX 11 DEAD LOAD 1.35 62 WIND LOAD X 1.50 154 DL-WLX 11 DEAD LOAD 1.35 62 WIND LOAD X -1.50

161 DL+LL+EQL1+SELX 11 DEAD LOAD 1.00

12 LIVE LOAD 0.30

71 SEISMIC LOAD X 1.00

162 DL+LL+EQL1-SELX 11 DEAD LOAD 1.00

12 LIVE LOAD 0.30

71 SEISMIC LOAD X -1.00

163 DL+LL+EQL1+SELZ 11 DEAD LOAD 1.00

12 LIVE LOAD 0.30

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Combination Load Cases Cont...

72 SEISMIC LOAD Z 1.00

164 DL+LL+EQL1-SELZ 11 DEAD LOAD 1.00

12 LIVE LOAD 0.30

72 SEISMIC LOAD Z -1.00

12 LIVE LOAD 0.30

12 LIVE LOAD 1.00

From Load Case-501 onwards are

Servicibility Load combinations

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Combination Load Cases Cont...

511 DL+MR1+LL 11 DEAD LOAD 1.00 51 MONORAIL CASE-1 1.00 12 LIVE LOAD 1.00 512 DL+MR2+LL 11 DEAD LOAD 1.00 52 MONORAIL CASE-2 1.00 12 LIVE LOAD 1.00 513 DL+MR3+LL 11 DEAD LOAD 1.00 53 MONORAIL CASE-3 1.00 12 LIVE LOAD 1.00 514 DL+MR4+LL 11 DEAD LOAD 1.00 54 MONORAIL CASE-4 1.00 12 LIVE LOAD 1.00

12 LIVE LOAD 1.00

61 WIND LOAD-Z 1.00

12 LIVE LOAD 1.00

62 WIND LOAD X 1.00

12 LIVE LOAD 1.00

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Combination Load Cases Cont...

61 WIND LOAD-Z 1.00

12 LIVE LOAD 1.00

62 WIND LOAD X 1.00

12 LIVE LOAD 1.00

62 WIND LOAD X -1.00 551 DL+WLX 11 DEAD LOAD 1.00 61 WIND LOAD-Z 1.00 552 DL-WLX 11 DEAD LOAD 1.00 61 WIND LOAD-Z -1.00 553 DL+WLZ 11 DEAD LOAD 1.00 62 WIND LOAD X 1.00 554 DL-WLZ 11 DEAD LOAD 1.00 62 WIND LOAD X -1.00

12 LIVE LOAD 1.00

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Combination Load Cases Cont...

12 LIVE LOAD 1.00

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1. Dead Load

Dead Load - SELF WEIGHT

Dead Load - SILO ROOF

Dead Load of Roof Plate =0.60 kN/m2 - considering 6 th. Plate with stiffener

UDL

Spacing-1 Spacing-2 DL

End Beam 0.00 m 1.20 m 0.36 kN/m - UDL means Uniformly Distributed Load

Intermediate Beam 1.20 m 1.20 m 0.72 kN/m

Dead Load - AIR SLIDE GALLERY at top of Silo Roof ( for location Refer Mechanical drawing)

Dead Load of Checkered Plate =0.60 kN/m2

UDL

Intermediate Beam

Dead Load - PLATFORM at +7.50m (inside Concrete Silo Support)

Dead Load of Grating =0.40 kN/m2

UDL

Beam to beam Spacing

Self weight of members and plates are calculatedby STAAD Pro software based on defined member size, Plate thickness, density of material

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2. Live Load

Live Load - SILO ROOF

Dust Load =1.00 kN/m2 Live Load =2.50 kN/m2

Total =3.50 kN/m2

UDL

Spacing-1 Spacing-2 DL - UDL means Uniformly Distributed Load

End Beam 0.00 m 1.20 m 2.10 kN/m

Live Load - AIR SLIDE GALLERY

Total =2.50 kN/m2

UDL

End Beam 0.00 m 0.90 m 1.13 kN/m

Intermediate Beam

Live Load - PLATFORM at +7.50m (inside Concrete Silo Support)

Total =3.50 kN/m2

UDL

End Beam 0.00 m 1.10 m 1.93 kN/m

3. Equipment Load

All equipment loads have been applied taken from Mechanical drawings.

4. Monorail Load (below 7.50m level platform) Monorail Capacity = 20.0 kN

Block Weight = 3.0 kN

Total = 23.0 kN Impact = 25% Design Load with Impact = 28.8 kN

Beam to beam Spacing

Beam to beam Spacing Beam to beam Spacing

As per HBL/2011-11/03 Standard Design Criteria: June 2010 - CONTRACT PART IV-1-4 : CIVIL AND STRUCTURAL WORKS

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5. Load from Air Slide Gallery between New and Existing Silo (STAAD output of Support Reaction) Note :These loads are based on Preliminary arrangement of Gallery Structure.

The final layout of Gallery structure is NOT yet finalised. Separate calculation shall be submitted for this Gallery Structure.

Along the gallery - the supports will be in Slot Hole, so that the Gallery will neither Pull nor Push the silo. Only lateral (perpendicular to gallery) loads will be transferred to Silo along with vertical loads.

L/C Force-X kN Force-Y kN Force-Z kN

Dead Load 11 0 10.37 0 Live Load 12 0 13.71 0 Equipment Load 13 0 8.12 0 Wind Z 41 0 23.36 -38.88 Wind X 42 0 0.16 0 Dead Load 11 0 10.7 0 Live Load 12 0 13.69 0 Equipment Load 13 0 8.08 0 Wind Z 41 0 -23.36 -19.42 Wind X 42 0 -0.16 0

Node (support point of Gallery on Silo)

2376

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Wind Load Calculation Philosophy as per EURO Code

Code Reference

Wind Load Shall be designed as per Eurocode1: Part 1-4 Eurocode1: Part 1-4

Peak velocity pressure

qp(z) = [1+7.lv(z)].0.5.ρ.Vm2(z) = Ce(z).qb Expression 4.8 Where, lv(z) = Terbulence intensity = k1 / [co(z).ln(z/z0) ] Expression 4.7 K1 =1.0 Cl. 4.4 co(z) = Orography factor Cl. 4.3.1 =1.0

Terrain Category = III Table 4.1

z0 =0.3 m - for Terrain Category III

zmin =5.0 m - for Terrain Category III

lv(z) = 0.285 m/s At 10m height, z = 10 m 0.256 m/s At 15m height, z = 15 m 0.238 m/s At 20m height, z = 20 m 0.226 m/s At 25m height, z = 25 m 0.217 m/s At 30m height, z = 30 m 0.204 m/s At 40m height, z = 40 m 0.195 m/s At 50m height, z = 50 m ρ =Air Density Cl. 4.5 = 1.25 kg/m2

Vm = Mean Wind Velocity

= Cr(z).Co(z).Vb Expression 4.3

Cr(z) = Roughness factor Expression 4.4

= kr.ln(z/z0)

kr = 0.19.(z0/z0II)0.07 Where, z0II = 0.05 m Expression 4.5 = 0.22 Cr(z) = 0.755 At 10m height, z = 10 m 0.843 At 15m height, z = 15 m 0.905 At 20m height, z = 20 m 0.953 At 25m height, z = 25 m 0.992 At 30m height, z = 30 m 1.054 At 40m height, z = 40 m 1.102 At 50m height, z = 50 m Vb = 45.83 m/s 165 km/hr Vm = 34.6 m/s At 10m height, z = 10 m 38.6 m/s At 15m height, z = 15 m 41.5 m/s At 20m height, z = 20 m 43.7 m/s At 25m height, z = 25 m 45.5 m/s At 30m height, z = 30 m 48.3 m/s At 40m height, z = 40 m 50.5 m/s At 50m height, z = 50 m

Peak velocity pressure

lv(z) Vm At 10m height, z = 10 m 0.29 34.6 At 15m height, z = 15 m 0.26 38.6 At 20m height, z = 20 m 0.24 41.5 At 25m height, z = 25 m 0.23 43.7 At 30m height, z = 30 m 0.22 45.5 At 40m height, z = 40 m 0.20 48.3 At 50m height, z = 50 m 0.20 50.5 Sharp edged Structural element (Angle, Channel, Joist)

Cf = Cf0.ψA Cl. 7.7

Where, Cfo =2.0

ψA =0.98 - for solidity ratio 0.1 Fig. 7.36

=0.88 - for solidity ratio 0.5

Cf = 1.96 Note : Description qp(z) 2244 N/m2 2600 N/m2

Linear interpolation shall be done for intermediate values 2865 N/m2 3077 N/m2 3255 N/m2 Unit of qp(z) is assumed as N/m2 3544 N/m2 3776 N/m2

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Description Wind Force Acting on Structure

Fw = CsCd.Cf.qp(ze).Aref Expression 5.3

Where,

CsCd = Structural Factor

=1.0 Cl. 6.2

Aref = Projected Area Normal to Wind Cf = Force Co-efficient

Wind Load on Air Slide:

Wind Pressure =

Height =0.36 m No. of Supports = 2

Width =0.30 m

Width /Height = 0.83

Cf = Cf0.ψA.ψr Cl. 7.11

Where, Cfo =2.3 Fig. 7.23

ψr =1.0 Fig. 7.24

Cf = 2.07

Support Spacing = 3.00 m Total Wind Load = 8.44 kN Hoz. Load on Support = 4.22 kN Wind Load on Bag Filter at Silo Roof:

Wind Pressure = 3.78 kN/m2

Height =4.85 m Lever Arm = 2.20 m

Width =2.20 m

Width /Height = 0.45

Cf = Cf0.ψA.ψr Cl. 7.11

Where, Cfo =2.1 Fig. 7.23

ψr =1.0 Fig. 7.24

Cf = 1.89 C.G. height = 5.80 m

Support distance = 2.20 m Total Wind Load = 76.14 kN

Hoz. Load on Support = 19.03 kN Vertcal Load on Support = 100.36 kN Wind Load on Silo & Silo Supporting Concrete Cylinder:

Cf = CP0.ψλα Cl. 7.9.1 (2)

Diameter, b = 16.00 m

v = 1.50E-05 Cl. 7.15

Height = 10 m 20 m 30 m 40 m

Re = 3.7E+07 4.4E+07 4.8E+07 5.2E+07 Cl. 7.15

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Description

αA =105 deg αmin =75 deg

α ψλα Cpo Cf 10m 20m 30m 40m 0 1 1 1.0 2.24 2.86 3.26 3.54 15 1 0.5 0.5 1.12 1.43 1.63 1.77 30 1 0.1 0.1 0.22 0.29 0.33 0.35 45 1 -0.65 -0.7 -1.46 -1.86 -2.12 -2.30 60 1 -1.3 -1.3 -2.92 -3.72 -4.23 -4.61 75 1 -1.5 -1.5 -3.37 -4.30 -4.88 -5.32 90 0.97 -1.4 -1.36 -3.05 -3.89 -4.42 -4.82 105 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 120 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 135 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 150 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 165 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 180 0.9 -0.9 -0.81 -1.82 -2.32 -2.64 -2.87 Wind Load in kN/m2

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Wind Load Calculation Philosophy as per BNBC-93

Wind Speed,

Vb =210 Km/hr

- Location - DHAKA as per Table 6.2.8 of Page 6-32 of Bangladesh National Building Code

Cc =4.720E-05

- Cl. 2.4.2.6 of Page 6-33 of Bangladesh National Building Code

CI =1.00

- Category-III as per Table 6.2.9 of Page 6-33 of Bangladesh National Building Code

Basic Wind Speed: Fastest-mile wind speed measured at 10 m, in terrain category B, with an annual probability of occurrence of

2% (2.4.2 of BNBC-93). Height = 12 m 15 m 21 m 30 m 40 m 50 m CZ = 1.055 1.125 1.238 1.371 1.488 1.586 - For Exposure-B Wind Pressure, q z = Vb 2 . C c .CI .CZ

-as per Table 6.2.10 of Page 6-33 Bangladesh National Building Code

qz = 2.20 kN/m2 2.34 kN/m2 2.58 kN/m2 2.85 kN/m2 3.10 kN/m2 3.30 kN/m2 Cg = G h = 1.145

-as per Cl. 2.4.6.6.a & Table 6.2.11 of Page 6-36 Bangladesh National Building Code,

for average Roof Height of 38.0m

Design Wind Pressure, p

z

=

Cg

.qZ

Design Wind Pressure, p

z = 2.514 kN/m2 2.681 kN/m2 2.951 kN/m2 3.268 kN/m2 3.546 kN/m2 3.780 kN/m2

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Seismic Load Calculation Philosophy

Code Reference Seismic Load Shall be designed as per Eurocode 8: Part 1 & 4

EQUVALENT LATERAL FORCE PROCEDURE Seismic Base Shear

Fb = Sd(T1) .m.λ Cl. 4.3.3.2.2

Where

m = Effective seismic mass =

λ = 1.0

Sd(T1) = Ordinate of Design Spectrum at time period T1

Cl. 3.2.2.5

β = Lower bound factor for the horizontal design spectrum.

= 0.2 Cl. 3.2.2.5

q = Behaviour factor

= 1.50 Table 6.1 Note 1 & Cl 4.2.3.1

T = T1

Eurocode 8: Part 1

Eurocode 8: Part 1 Description

Dead Load + 100% Equipment Load (including Silo Material) + 25% Live Load

Eurocode 8: Part 1

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Seismic Load Calculation Philosophy

Code Reference Description

ag = Design ground acceleration for Type-A ground = γ1 .agR

γ1 = Importance Factor

=1.0 - Considering Importance Calss - II agR = Peak ground acceleration for Type-A ground

=0.150g ag =0.150g Ground Type E S = 1.4 TB = 0.15 TC = 0.5 TD = 2

See below for values of Sd(T) for corresponding value of Time period (T), to define response spectra in STAAD.

ag TB TC TD S q T Sd (T) 1.47 0.15 0.5 2 1.4 1.5 1 0.00 0.140g 1.47 0.15 0.5 2 1.4 1.5 2 0.10 0.280g 1.47 0.15 0.5 2 1.4 1.5 3 0.20 0.350g 1.47 0.15 0.5 2 1.4 1.5 4 0.30 0.350g 1.47 0.15 0.5 2 1.4 1.5 5 0.40 0.350g 1.47 0.15 0.5 2 1.4 1.5 6 0.50 0.350g 1.47 0.15 0.5 2 1.4 1.5 7 0.60 0.292g 1.47 0.15 0.5 2 1.4 1.5 8 0.70 0.250g 1.47 0.15 0.5 2 1.4 1.5 9 0.80 0.219g 1.47 0.15 0.5 2 1.4 1.5 10 0.90 0.194g 1.47 0.15 0.5 2 1.4 1.5 11 1.00 0.175g 1.47 0.15 0.5 2 1.4 1.5 12 1.20 0.146g 1.47 0.15 0.5 2 1.4 1.5 13 1.40 0.125g 1.47 0.15 0.5 2 1.4 1.5 14 1.60 0.109g 1.47 0.15 0.5 2 1.4 1.5 15 1.80 0.097g 1.47 0.15 0.5 2 1.4 1.5 16 2.00 0.088g 1.47 0.15 0.5 2 1.4 1.5 17 2.20 0.072g 1.47 0.15 0.5 2 1.4 1.5 18 2.40 0.061g 1.47 0.15 0.5 2 1.4 1.5 19 2.60 0.052g 1.47 0.15 0.5 2 1.4 1.5 20 2.80 0.045g 1.47 0.15 0.5 2 1.4 1.5 21 3.00 0.039g 1.47 0.15 0.5 2 1.4 1.5 22 3.25 0.033g 1.47 0.15 0.5 2 1.4 1.5 23 3.50 0.029g 1.47 0.15 0.5 2 1.4 1.5 24 4.00 0.030g

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6. Seismic Load

Seismic Base Shear, V =

Z.I.C.W / R

Z =

0.15

- for Seismic Zone II

I =

1.00

- Location - DHAKA as per Fig 6.2.105of Page 6-32 of Bangladesh National Building Code

W =

Dead Load + 100% Equipment Load (including Silo Material) + 25% Live Load - excluding weight of Pile Cap

=

79800 kN

- taken from STAAD

R =

4

- as per Table 6.2.27 of Page 6-61 of Bangladesh National Building Code

C =

1.25.S / T

2/3

where, S =

2.00 - as per Table 6.2.25 of Page 6-55 of Bangladesh National Building Code

T = Ct . h n 2/3 Ct = 0.0490 hn =48.50 m T = 0.901 sec C = 2.681

Seismic Base Shear, V =

8022.4 kN

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DESIGN OF SILO (Load Calculation)

1. Basic Dimensions of Silo

Design Bulk Density of Material, γ =1.6 t/m3

Hr Height of Roof, Hr =0.4 m

Height of Cylindrical Portion, Hc =20.52 m Diameter of Cylindrical Portion, Dc =16.0 m

Volume of Cylindrical Portion, Vc = (π x Dc2/4) x Hc

Dc Hc = 4125.8 m3

Height of Hopper Portion, Hh =11.1 m Bottom Diameter of Hopper, Dh =0.8 m Slope of Hopper with Vertical, β = tan-1

[ {(Dc-Dh)/2 } / Hh ] = 34.4 deg = 0.60 rad Volume of Hopper Portion, Vh =

= 782.2 m3

Hh

Volume of Silo = Vc + Vh = 4908.0 m3 Material in Cylindrical Portion = 6601 t

Material in Hopper Portion = 1252 t

Dh Capacity of Silo = 7853 t

Total no. of Supports on Concrete Ring Wall =12

Action Assessment Class 2 - Table 2.2 EN 1991-4 Concentrated load on each 528 element in Hopperportion = 14.9 t

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Above tables are taken from EN 1991-4 Hc/Dc = 1.28 > 1.0

< 2.0

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Silo Loads during Filling

tan β =0.69

φr = 36 (1-k)/2µ =0.5

tan φr = 0.727 - Shallow Hopper

γ =16.0 kN/m3 b = 0.2 k =0.54 µ =0.46 Area, A =201.1 m2 z0 = 16.1 m Perimeter, U =50.3 m h0 = A/U =4.00 = 1.94 µheff =0.336 Ff =0.934 n = -1.52 Ph0 =139.1 Phf Pwf Pnf Ptf kN/m2 _kN/m2 _kN/m2 _kN/m2 5 0.257 35.8 16.5 10 0.496 68.9 31.7 15 0.629 87.6 40.3 20.52 0.720 100.2 46.1 172.9 58.0 25.52 191.6 64.3 31.62 210.0 70.5 Z (m) YR

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Silo Loads during Discharge Cs = 0.28 Ch = 1.042 Cw = 1.028 Phe Pwe Pne Pte kN/m2 _kN/m2 _kN/m2 _kN/m2 5 0.257 37.3 16.9 10 0.496 71.9 32.6 15 0.629 91.3 41.4 20.52 0.720 104.4 47.4 172.9 58.0 25.52 191.6 64.3 31.62 210.0 70.5 Z (m) YR

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Silo Patch Loads during Filling

s = 3.20 m

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Z (m) YR Phf Cop =0.5 10.26 0.504 70.2 E =0 since ef =0 Cpf = 0.036 Ppf = 2.55 kN/m 2 θ 0 2.55 kN/m2 15 2.46 kN/m2 30 2.20 kN/m2 45 1.80 kN/m2 60 1.27 kN/m2 75 0.66 kN/m2 90 0.00 kN/m2

Silo Patch Loads during Discharge

zp = 10.26

(41)

Z (m) Phe Cop =0.5 10.26 73.1 E =0 since ef =0 Cpe = 0.073 Ppe = 5.31 kN/m 2 θ 0 5.31 kN/m2 15 5.13 kN/m2 30 4.60 kN/m2 45 3.75 kN/m2 60 2.65 kN/m2 75 1.37 kN/m2 90 0.00 kN/m2 Ppes

(42)

(43)

-11.00 kN -0.72 kN/m -11.00 kN -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m-0.36 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m-0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m-0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.27 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.27 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m-0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.36 kN/m -0.36 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m -0.72 kN/m -0.72 kN/m -0.36 kN/m X Y

(44)

-14.00 kN -4.20 kN/m -14.00 kN -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m-4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m-2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m-4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -1.13 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -1.13 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m-4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -2.10 kN/m -2.10 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m -4.20 kN/m -4.20 kN/m -2.10 kN/m X Y

(45)

-9.00 kN -9.00 kN -5.40 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -3.00 kN -5.40 kN -5.00 kN -3.00 kN -3.00 kN -6.00 kN -3.00 kN -3.00 kN -2.70 kN -2.70 kN -5.40 kN -2.70 kN -2.70 kN -21.75 kN -21.75 kN -2.25 kN -21.75 kN -2.50 kN -7.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -2.50 kN -7.50 kN -2.50 kN -7.50 kN -7.50 kN -0.75 kN -0.75 kN -1.85 kN -1.85 kN -21.75 kN -2.25 kN X Y

(46)

-24.00 kN 20.00 kN -24.00 kN 40.00 kN 1.74 kN/m 1.85 kN/m 1.74 kN/m 1.73 kN/m 4.22 kN 4.22 kN 1.74 kN/m 0.63 kN/m 1.85 kN/m 0.87 kN/m1.74 kN/m 4.22 kN 4.22 kN 1.74 kN/m 1.85 kN/m 1.61 kN/m 19.03 kN 100.36 kN 19.03 kN -100.36 kN 0.63 kN/m 0.87 kN/m1.74 kN/m 19.03 kN -100.36 kN 19.03 kN 100.36 kN X Y

SILO ROOF : WIND

(47)

-24.00 kN 20.00 kN -24.00 kN 40.00 kN 19.03 kN 100.36 kN 19.03 kN -100.36 kN 19.03 kN -100.36 kN 19.03 kN 100.36 kN X Y

SILO ROOF : WIND LOAD

(48)

1.82 kN/m2 -1.12 kN/m2 2.92 kN/m2 1.82 kN/m2 -1.12 kN/m2 3.37 kN/m2 -0.22 kN/m2 -1.12 kN/m2 1.82 kN/m2 1.46 kN/m2 2.92 kN/m2 1.82 kN/m2 -2.24 kN/m2 2.92 kN/m2 1.82 kN/m2 3.37 kN/m2 1.82 kN/m2 1.82 kN/m2 1.46 kN/m2 1.46 kN/m2 3.37 kN/m2 -1.12 kN/m2 1.82 kN/m2 1.82 kN/m2 3.37 kN/m2 -2.24 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 2.92 kN/m2 1.82 kN/m2 1.46 kN/m2 1.82 kN/m2 -0.22 kN/m2 1.82 kN/m2 -0.22 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 -0.22 kN/m2 3.05 kN/m2 3.05 kN/m2 3.05 kN/m2 1.82 kN/m2 1.82 kN/m2 3.05 kN/m2 X Y Z

ON SILO WALL 0.0m TO 10.0m : WIND

(49)

-0.22 kN/m2 1.82 kN/m2 -0.22 kN/m2 1.82 kN/m2 3.37 kN/m2 1.82 kN/m2 1.82 kN/m2 3.37 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 3.05 kN/m2 1.82 kN/m2 1.82 kN/m2 -1.12 kN/m2 2.92 kN/m2 2.92 kN/m2 1.82 kN/m2 1.46 kN/m2 -1.12 kN/m2 1.82 kN/m2 3.37 kN/m2 1.46 kN/m2 1.82 kN/m2 3.05 kN/m2 3.37 kN/m2 1.46 kN/m2 3.05 kN/m2 3.05 kN/m2 -0.22 kN/m2 1.82 kN/m2 1.46 kN/m2 -1.12 kN/m2 2.92 kN/m2 -0.22 kN/m2 1.82 kN/m2 1.82 kN/m2 -1.12 kN/m2 1.82 kN/m2 1.82 kN/m2 2.92 kN/m2 1.82 kN/m2 -2.24 kN/m2 1.82 kN/m2 1.82 kN/m2 1.82 kN/m2 -2.24 kN/m2 X Y Z

ON SILO WALL 0.0m TO 10.0m : WIND LOAD

(50)

4.30 kN/m2 -1.43 kN/m2 4.30 kN/m2 3.72 kN/m2 -0.29 kN/m2 3.72 kN/m2 4.30 kN/m2 2.32 kN/m2 -2.86 kN/m2 -1.43 kN/m2 2.32 kN/m2 3.89 kN/m2 -1.43 kN/m2 2.32 kN/m2 1.86 kN/m2 -0.29 kN/m2 -2.86 kN/m2 2.32 kN/m2 3.72 kN/m2 1.86 kN/m2 -1.43 kN/m2 3.89 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 3.89 kN/m2 2.32 kN/m2 2.32 kN/m2 1.86 kN/m2 -0.29 kN/m2 2.32 kN/m2 4.30 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 3.72 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 1.86 kN/m2 2.32 kN/m2 3.89 kN/m2 -0.29 kN/m2 X Y Z

(51)

2.32 kN/m2 2.32 kN/m2 -1.43 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 -1.43 kN/m2 2.32 kN/m2 3.89 kN/m2 4.30 kN/m2 2.32 kN/m2 -2.86 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 2.32 kN/m2 3.89 kN/m2 2.32 kN/m2 -0.29 kN/m2 2.32 kN/m2 4.30 kN/m2 2.32 kN/m2 1.86 kN/m2 -1.43 kN/m2 2.32 kN/m2 -2.86 kN/m2 4.30 kN/m2 1.86 kN/m2 1.86 kN/m2 3.72 kN/m2 4.30 kN/m2 2.32 kN/m2 -0.29 kN/m2 3.89 kN/m2 2.32 kN/m2 -0.29 kN/m2 2.32 kN/m2 -1.43 kN/m2 2.32 kN/m2 3.89 kN/m2 3.72 kN/m2 -0.29 kN/m2 1.86 kN/m2 3.72 kN/m2 2.32 kN/m2 3.72 kN/m2 X Y Z

(52)

-0.33 kN/m2 2.64 kN/m2 2.64 kN/m2 2.12 kN/m2 4.42 kN/m2 2.64 kN/m2 4.23 kN/m2 -3.26 kN/m2 4.88 kN/m2 4.42 kN/m2 2.64 kN/m2 -1.63 kN/m2 2.64 kN/m2 2.64 kN/m2 2.12 kN/m2 4.23 kN/m2 _{4.42 kN/m2} _{2.64 kN/m2} 2.64 kN/m2 -0.33 kN/m2 2.64 kN/m2 4.88 kN/m2 4.88 kN/m2 2.64 kN/m2 2.64 kN/m2 4.23 kN/m2 2.64 kN/m2 -3.26 kN/m2 2.64 kN/m2 2.64 kN/m2 -0.33 kN/m2 2.64 kN/m2 2.64 kN/m2 2.12 kN/m2 -0.33 kN/m2 2.64 kN/m2 4.88 kN/m2 -1.63 kN/m2 -1.63 kN/m2 4.23 kN/m2 2.64 kN/m2 2.64 kN/m2 2.64 kN/m2 4.42 kN/m2 2.64 kN/m2 2.12 kN/m2 2.64 kN/m2 -1.63 kN/m2 X Y Z

(53)

2.64 kN/m2 4.88 kN/m2 4.42 kN/m2 2.12 kN/m2 2.64 kN/m2 2.64 kN/m2 -0.33 kN/m2 4.42 kN/m2 -1.63 kN/m2 -3.26 kN/m2 2.64 kN/m2 2.64 kN/m2 2.64 kN/m2 4.88 kN/m2 2.64 kN/m2 -0.33 kN/m2 -3.26 kN/m2 2.12 kN/m2 2.12 kN/m2 4.23 kN/m2 2.64 kN/m2 2.64 kN/m2 2.64 kN/m2 -1.63 kN/m2 -0.33 kN/m2 2.64 kN/m2 4.23 kN/m2 4.42 kN/m2 2.64 kN/m2 4.42 kN/m2 2.64 kN/m2 2.64 kN/m2 -1.63 kN/m2 2.12 kN/m2 4.23 kN/m2 2.64 kN/m2 -1.63 kN/m2 4.88 kN/m2 4.88 kN/m2 2.64 kN/m2 2.64 kN/m2 2.64 kN/m2 4.23 kN/m2 2.64 kN/m2 2.64 kN/m2 2.64 kN/m2 -0.33 kN/m2 2.64 kN/m2 X Y Z

(54)

-3.54 kN/m2 2.87 kN/m2 4.82 kN/m2 2.87 kN/m2 2.87 kN/m2 4.61 kN/m2 4.61 kN/m2 2.87 kN/m2 2.87 kN/m2 2.30 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 4.61 kN/m2 2.87 kN/m2 -3.54 kN/m2 2.87 kN/m2 2.87 kN/m2 -1.77 kN/m2 -1.77 kN/m2 4.61 kN/m2 2.87 kN/m2 -0.35 kN/m2 5.32 kN/m2 2.87 kN/m2 4.82 kN/m2 2.87 kN/m2 2.87 kN/m2 5.32 kN/m2 4.82 kN/m2 -1.77 kN/m2 2.30 kN/m2 2.30 kN/m2 2.87 kN/m2 5.32 kN/m2 2.87 kN/m2 2.30 kN/m2 -1.77 kN/m2 2.87 kN/m2 4.82 kN/m2 2.87 kN/m2 -0.35 kN/m2 -0.35 kN/m2 2.87 kN/m2 -0.35 kN/m2 5.32 kN/m2 X Y Z

(55)

4.82 kN/m2 2.87 kN/m2 -3.54 kN/m2 2.87 kN/m2 -1.77 kN/m2 -0.35 kN/m2 2.87 kN/m2 5.32 kN/m2 2.30 kN/m2 2.87 kN/m2 4.61 kN/m2 4.82 kN/m2 -0.35 kN/m2 4.61 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 4.82 kN/m2 5.32 kN/m2 2.30 kN/m2 2.87 kN/m2 2.87 kN/m2 -0.35 kN/m2 2.87 kN/m2 4.61 kN/m2 2.87 kN/m2 4.82 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 -1.77 kN/m2 2.87 kN/m2 5.32 kN/m2 2.87 kN/m2 2.30 kN/m2 2.87 kN/m2 2.87 kN/m2 -0.35 kN/m2 2.30 kN/m2 5.32 kN/m2 2.87 kN/m2 -3.54 kN/m2 -1.77 kN/m2 4.61 kN/m2 2.87 kN/m2 2.87 kN/m2 2.87 kN/m2 -1.77 kN/m2 X Y Z

(56)

35.80 kN/m2

68.90 kN/m2

35.80 kN/m2

68.90 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

68.90 kN/m2

35.80 kN/m2

87.60 kN/m2

100.20 kN/m2

68.90 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

35.80 kN/m2

100.20 kN/m2

68.90 kN/m2

35.80 kN/m2

68.90 kN/m2

35.80 kN/m2

87.60 kN/m2

35.80 kN/m2

100.20 kN/m2

87.60 kN/m2

68.90 kN/m2

100.20 kN/m2

68.90 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

68.90 kN/m2

87.60 kN/m2

100.20 kN/m2

68.90 kN/m2

100.20 kN/m2

35.80 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

100.20 kN/m2

87.60 kN/m2

68.90 kN/m2

35.80 kN/m2

68.90 kN/m2

35.80 kN/m2

68.90 kN/m2

35.80 kN/m2

68.90 kN/m2

X

Y

Z

SILO FILLING : PHF

(57)

-3.29 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-3.05 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-3.29 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-3.05 kN/m2

-1.71 kN/m2

-3.29 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-3.05 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-3.05 kN/m2

-1.05 kN/m2

-3.29 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-1.05 kN/m2

-1.71 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-3.05 kN/m2

-3.29 kN/m2

-3.05 kN/m2

X

Y

Z

SILO FILLING : PWF

(58)

0.19 N/mm2

Y

SILO FILLING : PNF

(59)

-0.06 N/mm2

Y

SILO FILLING : PTF

(60)

37.30 kN/m2

71.90 kN/m2

37.30 kN/m2

71.90 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

71.90 kN/m2

37.30 kN/m2

91.30 kN/m2

104.40 kN/m2

71.90 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

37.30 kN/m2

104.40 kN/m2

71.90 kN/m2

37.30 kN/m2

71.90 kN/m2

37.30 kN/m2

91.30 kN/m2

37.30 kN/m2

104.40 kN/m2

91.30 kN/m2

71.90 kN/m2

104.40 kN/m2

71.90 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

71.90 kN/m2

91.30 kN/m2

104.40 kN/m2

71.90 kN/m2

104.40 kN/m2

37.30 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

104.40 kN/m2

91.30 kN/m2

71.90 kN/m2

37.30 kN/m2

71.90 kN/m2

37.30 kN/m2

71.90 kN/m2

37.30 kN/m2

71.90 kN/m2

X

Y

Z

(61)

-3.38 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-3.14 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-3.38 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-3.14 kN/m2

-1.76 kN/m2

-3.38 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-3.14 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-3.14 kN/m2

-1.08 kN/m2

-3.38 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-1.08 kN/m2

-1.76 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-3.14 kN/m2

-3.38 kN/m2

-3.14 kN/m2

X

Y

Z

(62)

0.19 N/mm2

Y

(63)

-0.06 N/mm2

_{-0.06 N/mm2}

-0.06 N/mm2

Y

(64)

1.27 kN/m2 0.66 kN/m2 2.55 kN/m2 -0.66 kN/m2 0.66 kN/m2 1.80 kN/m2 -0.66 kN/m2 1.80 kN/m2 2.20 kN/m2 -2.46 kN/m2 1.27 kN/m2 -2.55 kN/m2 -2.20 kN/m2 2.20 kN/m2 0.66 kN/m2 -2.20 kN/m2 1.80 kN/m2 -1.80 kN/m2 -1.27 kN/m2 -0.66 kN/m2 2.55 kN/m2 -2.46 kN/m2 -1.80 kN/m2 -1.27 kN/m2 -2.46 kN/m2 -2.46 kN/m2 1.80 kN/m2 1.27 kN/m2 2.46 kN/m2 0.66 kN/m2 -1.27 kN/m2 1.27 kN/m2 -2.55 kN/m2 -1.27 kN/m2 -1.80 kN/m2 -0.66 kN/m2 2.20 kN/m2 -2.20 kN/m2 -1.80 kN/m2 -2.20 kN/m2 2.46 kN/m2 2.46 kN/m2 2.46 kN/m2 2.20 kN/m2 X Y Z

SILO FILLING : PATC

(65)

2.65 kN/m2 1.37 kN/m2 5.31 kN/m2 -1.37 kN/m2 1.37 kN/m2 3.75 kN/m2 -1.37 kN/m2 3.75 kN/m2 4.60 kN/m2 -5.13 kN/m2 2.65 kN/m2 -5.31 kN/m2 -4.60 kN/m2 4.60 kN/m2 1.37 kN/m2 -4.60 kN/m2 3.75 kN/m2 -3.75 kN/m2 -2.65 kN/m2 -1.37 kN/m2 5.31 kN/m2 -5.13 kN/m2 -3.75 kN/m2 -2.65 kN/m2 -5.13 kN/m2 -5.13 kN/m2 3.75 kN/m2 2.65 kN/m2 5.13 kN/m2 1.37 kN/m2 -2.65 kN/m2 2.65 kN/m2 -5.31 kN/m2 -2.65 kN/m2 -3.75 kN/m2 -1.37 kN/m2 4.60 kN/m2 -4.60 kN/m2 -3.75 kN/m2 -4.60 kN/m2 5.13 kN/m2 5.13 kN/m2 5.13 kN/m2 4.60 kN/m2 X Y Z

SILO DISCHARGE : PATC

(66)

-0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m -0.44 kN/m -0.44 kN/m -0.44 kN/m -0.22 kN/m 7.50M : DEAD LOAD

(67)

-3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m -3.85 kN/m -3.85 kN/m -3.85 kN/m -1.93 kN/m 7.50M : LIVE LOAD

(68)

-28.80 kN

(69)

-28.80 kN

(70)

-28.80 kN

(71)

-28.80 kN

(72)

(73)

38 37 39 40 36 41 35 97 98 34 8 3305 42 33 3338 3312 3344 3311 3341 3317 43 32 3340 3316 3319 3348 3346 3307 3885 3304 3334 3337 2161 3318 44 31 3310 3314 3315 3313 3347 3345 3893 3335 ₃₃₄₃ 2165 3306 3342 2160 95 96 3330 3336 45 5 2163 104 103 3881 250 102 181 237 179 251 3880 3326 101 100 184 46 30 99 3879 185 3324 73 182 91 90 3878 89 92 72 74 180 88 3877 47 29 87 3325 3321 71 3327 3322 86 2168 3320 2188 3323 85 2187 3299 28 48 3297 76 70 166 106 3303 3302 105 167 58 57 59 56 60 27 49 3275 55 61 3298 3296 3273 69 77 2166 62 53 63 54 2169 108 168 68 64 3274 67 65 66 3276 169 107 2167 50 26 148 150 149 78 84 3278 3279 186 3249 2189 187 3246 3277 191 3253 3247 188 3280 2194 2193 51 25 2195 2190 189 3245 3250 193 3258 190 3272 194 144 143 82 80 2196 147 2197 146 145 3254 2191 152 151 3251 52 24 3295 3257 3271 3248 196 2192 3281 153 159 154 3255 197 3256 6 23 3259 3285 3291 3293 3289 3266 3252 192 286 3264 3268 3267 3261 3282 9 22 3292 3294 3288 202 3260 3270 3269 3290 10 21 287 3265 11 20 7 12 13 19 14 18 17 15 16 X Y Z

Silo Roof : Node Numbe

(74)

79 80 81 78 172 82 77 173 174 83 76 40 56 84 75 4106 40 62 4060 4113 4065 85 74 4107 41 09 183 4067 40 58 170 40 55 4064 4092 182 411 6 171 41 08 4076 411 8 40 77 305 4072 4120 4662 4105 31 1 128 86 4074 4071 42 0 411 7 73 46 68 411 5 4059 40 73 40 68 31 2 4070 4063 4069 46 69 4110 2370 41 19 40 57 4066 411 4 41 12 411 1 87 72 23 62 301 30 9 41 6 175 304 23 65 2368 319 4090 46 54181 315 41 7 18 5 12 7 18 4 418 180 313 88 71 46 53 4104 419 179 4085 166 32 0 167 316 18 7 4103 130 32 1 178 46 52 18 6 23 66 4083 40 88 16 8 22 0 177 31 7 176 4102 129 46 51 4091 21 9 31 8 18 9 89 70 14 7 161 160 16 2 314 4101 146 16 3 4089 40 87 46 50 159 300 4084 302 40 80 158 41 00 12 5 2405 23 75 145 46 49 40 81 303 4099 157 40 86 40 49 3243 90 40 79 4082 156 24 04 29 5 113 2406 40 78 131 40 46 144 11 0 114 4054 40 52 32 20 112 150 191 4053 111 29 4 68 91 10 9 115 290 190 20 8 4050 96 97 4047 95 98 143 291 94 99 40 20 13 2 4048 4045 4017 93 100 12 4 23 72 11 6 108 237 4 101 92 195 151 4019 4022 10 7 102 43 67 198 10 6 103 10 5 104 123 237 6 206 292 194 35 4 11 7 119 121 4021 293 142 2373 199 264 265 122 11 8 4024 322 139 13 3 39 73 35 6 40 25 45 66 323 263 26 2 120 40 28 3976 24 11 4026 324 39 74 4023 2413 3984 24 18 3980 3997 28 4 201 24 28 24 27 330 325 39 72 39 91 4027 24 19 3996 326 2425 24 24 2430 24 34 24 31 24332426 24 12 39 71 35 8 331 3977 2415 289 204 39 88 46 65 39 83 327 242 0 2429 256 257 261 258 2432 260 259 3995 4015 254 253 200 276 332 4016 24 21 39 90 3994 137 135 40 31 34 1 241 4 2417 39 82 266 267 3978 345 242 2 39 87 3985 3993 47 64 278 274 40 44 4014 334 24 23 3992 39 89 4033 40 34 138 3975 24 16 350 40 32 40 41 40 40 335 39 81 3998 40 04 40 29 4036 4007 48 63 3986 4037 4003 337 40 10 40 01 4006 48 7 485 4009 40 42 34 9 400 8 40 00 4039 40 35 4038 255 252 49 62 40 13 48 8 34 2 205 346 4012 40 30 3999 272 273 401 1 281 32 08 3979 50 61 48 9 4005 51 60 52 59 53 58 54 57 56 55 X Y Z

Silo Roof : Member Numbe

Silo Structure Rev 3

Project : Holcim Cement (Bangladesh) Ltd. Project Bistaar

Design Calculation of Cement Silo

Document No. : DESIGN-CS-HBL-R3

Index:

1. Introduction

Page-3

2.

Regulation

Considered

Page-4

3. Material

Page-5

4. Structure General Arrangement

Page-6

5. Primary Loads and Load Combinations

Page-15

6. Input : Loading Diagram

Page-42

7. Input: Node & Member Diagram

Page-72

8. Output: STAAD Input File

Page-97

9. Output: Code Check Ratio of members

Page-140

10. Output: Silo Plate Design

Page-145

11. Output: Deflection Diagram

Page-154

12. Connection Design

Page-168

13.

Foundation

Loading

Page-177

Revision-3 SUMMARY:

1. Silo (bottom portion) & Hopper Plate Thickness increased from 16mm to 20 mm.

2. Silo & Hopper Plate specification revised to ASTM A36 grade plate of fy = 245

MPa.

INTRODUCTION

The structures included in this report start from the concrete wall top that supports our SILO

structure and that is placed at a height from the ground at elevation + 17.500. The installation

includes one attached CIRCULAR silo of height of 20.518 m., internal diameter 16.00m and hopper

of height 10.787m.

This Silo hopper is concentric with silo centreline.

The entire structure will be designed with structural profiles with plates welded to them to

support the pressure of the material.

Silo roof is also supporting the Air Slide Gallery structure connecting this New Silo and the

existing Silo.

At one side of Cement Silo a steel structure is self standing, taking NO support from this cement

silo, for Bucket Elevator and Stair to access the Silo Roof.

REGULATIONS CONSIDERED

The following Regulations were used in this Project for calculation basis purposes:

•

Eurocode 0: Basis of Structural Design.

•

Eurocode 1: Actions on Structures.

Part 1-1: General Actions – Densities, Self-weight, Imposed Loads for

buildings.

Part 1-4: General Actions – Wind Actions.

Part 4: Silos and Tanks.

•

Eurocode 3: Steel structures’ project.

•

Eurocode 8: Seism resistant project arrangements.

Part 1-1: General regulations. Seism actions and general structure

requirements

Part 1-2: General regulations. General regulations for buildings.

Part 1-3: General regulations. Specific regulations for different materials

and elements

•

HBL/2011-11/03 Standard Design Criteria: June 2010 - CONTRACT PART IV-1-4

: CIVIL AND STRUCTURAL WORKS

MATERIALS

The following structural materials are considered in this project:

 Steel in structures: ASTM A36/KS D3503 SS 400

−

f

= 2

45 N/mm

Steel in structures: ASTM A36/KS D3503 SS 400

Steel in screws for structures: 8.8