3.0 PROPOSED LOCHAB BOUNDARY WALL - REVISED STRUCTURAL DRAWINGS.pdf

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Attached to
Demolition & Construction of New Boundary Wall- LOCHAB Phase Two
Solicitation number
19KE5025Q0012
Issued by

About this file

These are structural engineering drawings for a perimeter wall construction project at the LOCHAB residence for the U.S. Embassy in Nairobi, Kenya. The drawings detail the specifications for demolition of existing walls and construction of new boundary walls, including retaining walls.

The drawings include detailed layouts and elevations for 6 wall sections totaling approximately 180 meters in length, with heights varying from 2.95m to 5.95m. Key specifications include machine cut masonry blocks, 200x200mm columns, 600x200mm ground beams, 250x250x75mm coping, and three types of retaining walls based on height requirements (Type 1: 5.95m-4.95m, Type 2: 4.95m-3.95m, Type 3: 3.95m-2.95m). The drawings provide comprehensive construction details including foundations, reinforcement schedules, expansion joints, drainage specifications, and soil retention systems. The project requires coordination between demolition, new construction, and repairs to existing walls, with specific attention to ground level differences between the LOCHAB compound and neighboring properties.

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3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 1350

180000

2800 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000

177650

48275 63825 67900

EXISTING WALL TO BE REPAIRED NEW WORKS EXISTING WORKS

E X

IS

T

IN

G

W A

L L

T O

B E

R E

P A

IR

E

D N

E W

W O

R K

S E

X

IS

T

IN

G W

A L

L T

O B

E R

E P

A

IR

E D

N E

W W

O R

K S

N E

W W

O R

K S

E X

IS

T

IN

G

W A

L L

T O

B E

R E

P A

IR

E

D

9910048275

NEW WORKSDEMOLITIONS + NEW WORKSEXISTING WALL TO BE REPAIRED

E X

IS

T

IN

G

W O

R K

S

E X

IS

T

IN

G

W O

R K

S

E X

IS

TIN

G W

O R K S

EXISTING WORKS

N E W

W O R K

SNEW WORKS

BOUNDARY WALL LAYOUT

SCALE 1:100

BOUNDARY WALL LAYOUT

Project:

NO.

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on siteDATE

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/1

Checked : KGW

LOCHAB

ISSUESREVISION

DESCRIPTION BY

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

00620; NAIROBI KENYA"

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

WALL 1

W A

L L

W

A L

L

WALL 5

WALL 3

LEGEND

Demolitions + new works

New works

(Retaining wall + masonry)

New works ( Masonry)

Existing works

WALL 2

Existing wall to be repaired

(Retaining wall + masonry)

30275

M

IN

D O

S

600X200 BEAM

BELOW GROUND LEVEL

PLOT BOUNDARY

50 BLINDING

4D12-03

3000 3000 275 3000 3000 3000 3000 3000 3000

BOUNDARY WALL 1

200x200

MACHINE CUT

MASONRY BLOCKS

SCALE 1:50

63825 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000

GROUND 5.5

6.5

7.5

9.5

1701.5

Datum

4.5

3.5

2.5

Coping beam top level

Ground beam top level

Column base bottom level

Station

W17 W18 W20 W21 W22 W23 W24 W25 W26 W27 W28' W29 W30 W31 W32 W33 W34 W35 W36 W38W28 W37'W37

W19'W19

.0

.6

.0

.0

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.6

.6

.6

.6

.6

.6

.6

.6

.6

.0

.0

.3

.0

.5

.5

.5

.5

.5

.5

.5

.5

.5

.8

.8

.8

.8

.8

.8

.8

.0

.0

.0

.0

.0

.0

.0

.0

1930 3025

BOUNDARY WALL 5

250x250X75 COPING

MACHINE CUT

MASONRY BLOCKS

GROUND LEVEL

1600 3000 1865 3000 1535

11000

200x200

MACHINE CUT

MASONRY BLOCKS

GROUND LEVEL

BOUNDARY WALL 4

SCALE 1:50SCALE 1:50

BOUNDARY WALL-ELEVATIONS

Project:

NO.

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on siteDATE

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/2

Checked : KGWISSUESREVISION

DESCRIPTION BY

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

00620; NAIROBI KENYA"

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

SHEET 1 OF 2

5.5

6.5

7.5

8.5

1701.5

Datum

4.5

3.5

2.5

Coping beam top level

Ground beam top level

Column base bottom level

Station

.5

.0

5.5

6.5

7.5

8.5

1701.5

Datum

4.5

3.5

2.5

Coping beam top level

Ground beam top level

Column base bottom level

Station

.5

.0

.5

.5

.0

.5

.0

.5

.0

.5

.0

.5

.0

.5

.0

.5

.0

3000 3000 3000

MACHINE CUT

MASONRY BLOCKS

GROUND LEVEL

BOUNDARY WALL 6

SCALE 1:50

.0

5.5

6.5

7.5

1701.5

Datum

4.5

3.5

2.5

Coping beam top level

Ground beam top level

Column base bottom level

Station

.5

.5

.0

.5

.0

.5

.0

.5

S8' S9

.0

.5

S20

.5

S21 S20' S10 S11 S23

.0

.0

S23

.0

.0

.0

.0

.0

.3

.3

.3

.3

.3

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

600x200

600x200 600x200

.5

.5

.5

.5

S22 S24 S25 S26

SECTION 1-1

SCALE 1:25

NEIGHBOURLOCHAB

GROUND BEAM

COPING BEAM

LEVEL

8.5

GROUND BEAMGROUND BEAM

COPING BEAM

600x200

GROUND BEAM

GROUND

LEVEL

LOCHAB

63825

E56E56' E39E40E41E42E43E44E45E47E47'E48E49E50E51E52E53E54E55E58E59E61 E60

1702.5

Datum

E57 E46

12.5

Masonry wall top level

Station

Retaining wall bottom level

Retaining wall top level

.1

.7

E17E18E19E19'E20E21E22E23E24E25E26E27E28E29E30E31E32E33E34E35E36E37E38E38'E39

1625 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000

NAIROBI

3000 3000 3000 3000 3000 3000

3000 275

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000 3000 3000 3000 3000 3000 3000 3000 275 3000 3000

BOUNDARY WALL- ELEVATIONS

Project:

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on site

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/3

Checked : KGWISSUES

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

BLUE VIOLETS PLAZA KINDARUMA RD.

PO BOX 23751-00100

CONSULTING LTD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

LEGEND

Ground Level

.7

.1

.7

.7

NO. DATE

REVISION

DESCRIPTION BY

9.5

5.5

4.5

10.5

8.5

11.5

7.5

6.5

Datum

.3

13.5

4.5

2.5

6.5

9.5

7.5

11.5

8.5

14.5

10.5

5.5

12.5

Station

1700.5

3.5

1.5

.1

.7

(1700+)

.7

.7

.5

3.5

.1

.0

.6

.3

.3

.8

.8

.1

.2

.7

.0

(1700+)

(1700+)

(1700+)

(1700+)

(1700+)

.5

.5

.1

.1

.8

.8

.3

.3

13.5

14.5

.7

.7

.7

.7

.7

.7

.7

.7

.7

.1

.9

.9

.5

.5

Masonry wall top level

Retaining wall bottom level

.7

.7

.7

.7

.3

.2

.0

BOUNDARY WALL 2 & 3

BOUNDARY WALL 3

Retained Earth

RETAINING WALL

MACHINE CUT

MASONRY BLOCKS

RETAINED EARTH

EXISTING GROUND

MACHINE CUT

MASONRY BLOCKS

BACKFILL LEVEL

SCALE : HOR 1: 50, VER 1:50

SCALE : HOR 1: 50, VER 1:50

.1

.1

.1

.1

.1

.1

.1

.1

Retaining wall top level

.1

.1

.1

.1

.1

.0

.0

.7

Remarks

WALL 1 WALL 3

Retaining wall type

Retaining wall type

.1

.1

.0

.6

TYPE 3 TYPE 3 TYPE 3 TYPE 2 TYPE 2 TYPE 2 TYPE 2

TYPE 2 TYPE 2 TYPE 2 TYPE 1 TYPE 1 TYPE 1 TYPE 1 TYPE 2 TYPE 3

LEVEL(LOCHAB)

LEVEL(NEIGHBORS)

FOUNDATIONS

15.5

EXISTING GROUND

LEVEL(LOCHAB)

EXISTING GROUND

LEVEL(LOCHAB)

(Lochab)

Ground Level (Neighbor's)

LOCHAB

3000 3000

100100

PLOT BOUNDARY

50 BLINDING

4D12-03

2D12-03

D O

S

M

IN

D

-0

-2

100 100

FOUNDATIONS, BEAMS & COLUMNS

D

-0

-2

M

IN

D O

S

4D12-03

50 BLINDING

4D12-03

D O

S

M

IN

D

-0

-2

600x200 GROUND BEAM(TO BE BELOW GL)

15D8-06-250

2D16-05

2D16-05

15D8-06-250

2D16-05

2D16-05

600x200 GROUND BEAM(TO BE BELOW GL)

FOUNDATIONS LAYOUT

SCALE 1:25

COLS-200x200, BASES-1300x750x250

4D12-01-200B

7D12-02-200BB

100100

SCALE 1:25

2D12-03

3000 30003000 3000 3000

ELEVATION AT EXPANSION JOINT

200x200 COPING BEAM

MACHINE CUT

TYPICAL WALL ELEVATION

BEAM R.C. DETAILS

SCALE 1:10

TYPICAL COPING

D8-09-250

2D10-08

MASONRY BLOCKS

2D10-08

TYPICAL COPING BEAM

SCALE 1:10

250x250X75 COPING

200x200RC COLUMN

550 550

100100

550 550

4D12-01-200B

7D12-02-200BB

2D12-03

550 100 100 550

50 BLINDING

0 600X200 GROUND BEAM

(TO BE BELOW GL)

2D12-03

2D12-03

4D12-01-200B

7D12-02-200BB

2D12-03

550 100 100 550

0 7

0 7

TYPICAL BEAM-COLUMN SUPPORT

D

-0

-2

M

IN

D O

S

4D12-03

50 BLINDING

SCALE 1:25

LAP=0.25L

L A

P

Ø

BOUNDARY WALL DETAILS

Project:

NO.

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on siteDATE

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/4

Checked : KGWISSUESREVISION

DESCRIPTION BY

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

00620; NAIROBI KENYA"

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

TO BE CONSTRUCTED MID-SPAN IN

SCALE 1:10

2D12-19

D8-11-250

2D12-19

TYPICAL BRACING

100 100

DPC

8D12-03

FLEXCEL JOINT

FILLER

LAYOUT AT EXPANSION JOINT

D

-0

-2

WALLS DETAIL AT

SEALANT

APPROVED JOINT

EXPANSION JOINT

SCALE 1:25

600x200 GROUND BEAM

(TO BE BELOW GL)

SCALE 1:25

2D12-03

100 100

4D12-01-200B/T

2D12-03

2D12-032D12-03

D O

S

M

IN

50 BLINDING

7D12-02-200BB/TT

440 100

100 440

100 100 50

PROPERTY BOUNDARY

NEIGHBOUR LOCHAB

LOCHAB

BEAM R.C. DETAILS

MASONRY WALL WITH A HEIGHT MORE THAN 3M

RETAINING WALL WALL DETAILS

Project:

NO.

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on siteDATE

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/5

Checked : KGWISSUESREVISION

DESCRIPTION BY

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

00620; NAIROBI KENYA"

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

200 100

+4750

D

-1

-2

H

IF

D10-17-200 VIF D12-18-150 VOF

B L

IN

D

IN

G

D10-15-200 VIF

D12-16-150 VOF

D

-1

-2

H

IF

D

-1

-2

H O

F

D16-16-200 2/16D10-13-150

4 %

+7300

D

-1

-2

H O

F

D O

S (M

IN

M A

S S

C O

N C

R E

T E

RETAINING WALL TYPE 1 (HEIGHT 5.95M - 4.95M )

SCALE 1:25

200 100

+3750

D

-2

-2

H

IF

D10-24-200 VIF D12-25-200 VOF

B L

IN

D

IN

G

D10-22-200 VIF D12-23-200 VOF

D

-2

-2

H O

F D

-2

-2

H

O F

D12-19-200 2/12D10-20-150

+6300

+3300

D

-2

-2

H

IF

100100

+2750

D

-2

-2

H

IF

D10-31-200 VIF D10-32-200 VOF

B L

IN

D

IN

G

D10-29-200 VIF

D10-30-200 VOF

D

-2

-2

H O

F D

-2

-2

H

O F

D10-26-200 2/8D10-27-200

D O

S

M

IN

+5300 100 100

+2300

D

-2

-2

H

IF

RETAINING WALL TYPE 2 (HEIGHT 4.95M - 3.95M )

SCALE 1:25

RETAINING WALL TYPE 3 (HEIGHT 3.95M - 2.95M )

SCALE 1:25

SHEET 1 OF 2

4 %

(M

IN

4 %

(M

IN

4 % 4 %

(M

IN

4 %

(1 :3

:6 ) 4

(M

IN

NB: THE STORM WATER DRAINAGE SHOWN HERE IS

INDICATIVE. THE STORM WATER DRAINAGE FOR THE

WHOLE SITE SHALL HAVE TO BE DESIGNED AS A DIFF-

ERENT EXERCISE

LOCHAB

0 5

D

-1

-2

H

IF

D

-1

-2

H O

F 2D10-31-200 2D10-32-200

D

-2

-2

H

IF

D

-2

-2

H

F

V A

R

IE

S F

R O

M

VARIES FROM 1400 T0 3000

VARIES FROM

B L

IN

D

IN

G

D O

S

M

IN

100 100

TYPICAL RETAINING WALL DETAILS

SCALE 1:25

DIA. 75 WEEP HOLES

1000 C/C VERTICALLY AND HORIZONTALLY

BITUMINOUS FELT

PROPERTY

LOCHAB NEIGHBOURS

UPPER GROUND

T

200 TO 300

50 SHOTCRETE ON

BS FABRIC A142 MESH

SMOOTH FINISH

TO ARCHITECT'S DETAILS

RETAINED

BEAM TO SHAPE

V A

R

IE

S

F R

O M

T O

3000 3000 3000 275

25 EXPANSION JOINT

D O

S

M

IN

MACHINE CUT STONES

RETAINING WALL

DIA 75 WEEP HOLE

V A

R

IE

S F

R O

M

T

RETAINING WALL DETAILS-TYPICAL DETAILS

Project:

NO.

Approved: PKG

Drawn: FNM

Drawing No.

Date : OCT 2024

Client:

Aegis Development Solutions Limited

Project Managers

STRUCTURAL TIMBER:

graded, seasoned and well celcured to

1. All structural timber cypres GS Grade

Drawing Title:STRUCTURAL STEEL:

B - Denotes bottom second layer

BB- Denotes bottom first layer

-bases: sides 75mm bottoms 50mm after erection.

-columns: 40mm

3. All welds shall be six millimetres fillet weld unless otherwise shown or approved.

applied to all structural members before and

2. One coat of red lead oxide paint to be

1. All structural steel shall be BS 5950.

Ministry of Public Work Standards.

CONCRETE:

GENERAL:

DATE

NOTES

and any discrepancy reported to the Engineer.

1. All dimensions shall be confirmed on siteDATE

-slabs:15mm

3. The Contractor shall be responsible for locating

4. DOS denotes Determine on Site and rerouting of all existing services.

2. All foundations shall be on firm ground as shall

4. Proper curing shall be ensured and where necessary hessian shall be used to prevent loss of moisture.

T- Denotes top second layer

6. Cover to the reinforcement:

-beams:25mm

5. TT- Denotes top first layer

1. Concrete to achieve 25n/mm2 at 28 days.

2. In absence of design mix, a nominal 1:1.5:3 shall be used. Scale: AS SHOWN

A Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE FACILITY MANAGEMENT

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 603, 6th FLOOR

BPCL-E-268/5

Checked : KGWISSUESREVISION

DESCRIPTION BY

PROPOSED LOCHAB PERIMETER WALL UPGRADE

www.aegisdevelopment.co.ke

TEL 020-2730961/0733633004

be approved by the Engineer.

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

00620; NAIROBI KENYA"

MANAGEMENT, U.S. EMABSSY NAIROBI, P.O. BOX 606

THE EXPRESS WRITTEN APPROVAL OF FACILITY

AND/OR DISTRIBUTION IS PROHIBITED WITHOUT

STATES GOVERNMENT. FURTHER REPRODUCTION

"THIS DOCUMENT IS THE PROPERTY OF THE UNITED

BATIMENT PROJECT

Consultants:

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

BLUE VIOLETS PLAZA KINDARUMA RD.

SUIT 307 3rd FLOOR

EMAIL- info@batimentprojects.co.ke

TEL +254 715 392 396

Project managers & Quantity Surveyors

P.O Box 2861-00100, Nairobi Kenya

SHEET 2 OF 2

EXISTING GROUND LEVEL

TYPICAL RETAINING WALL SECTION 1-1

SCALE 1:25

4 %

(M

IN

RAIN WATER CUT-OFF

BIO-SWALE DRAIN

4 %

EARTH

LEVEL

200 THICK MASONRY WALL

FINISHED TO ARCHITECT'S SPECS

TO BE AS PER DESIGN FOR

FOR SITE SWD FOR WHOLE SITE

(LOCHAB COMPOUND)

COMPOUND

200x200 COPING

BOUNDARY

FELT DPC

VARIES

PEGGED TO EXCAVATED FACE

WITH DIA.12 D12x600 PEGS

AT 1000 HOR+VERT

100010001000

NB: THE STORM WATER DRAINAGE SHOWN HERE IS

INDICATIVE. THE STORM WATER DRAINAGE FOR THE

WHOLE SITE SHALL HAVE TO BE DESIGNED AS A DIFF-

ERENT EXERCISE

D12x600 PEGS

LOCHAB

BENT TO SUIT

D12x600 PEGS DETAILS

SCALE 1:2.5

D12x600 PEGS ELEVATION

SCALE 1:2.5

Approved: PKG

Drawing No.

Date : OCT 2024

Project:Client: Project Managers

Drawing Title:

BY

ISSUES DATE

NOTES

DESCRIPTIONDATE

REVISION

NO. Scale: AS SHOWN

A

Priority:

CADfile:

NOT BE USED OTHERWISE.

IS FOR USE ON THE SPECIFIED PROJECT ONLY AND SHALL

PERMISSION. THE INFORMATION SHOWN ON THIS DRAWING

AND MAY NOT BE REPRODUCED AND/OR COPIED WITHOUT

IS THE EXCLUSIVE PROPERTY OF BATIMENT PROJECT CONSULTING

THIS DRAWING AS AN IMPORTANT INSTRUMENT OF SERVICE

BPCL-E-268/6EARTHWORKS-ANALYSIS

LOCHAB

Checked: KGW

Drawn : FNM

BATIMENT PROJECT

NAIROBI

PO BOX 23751-00100

CONSULTING LTD.

EMAIL- info@batimentprojects.co.ke

BLUE VIOLETS PLAZA KINDARUMA RD.

CELL + 254 715392396

SUITE 307 3rd FLOOR

WEB - www.batimentprojects.co.ke

PROPOSED LOCHAB PERIMETER WALL UPGRADE

Lateral Stress Major σ3 = (ƴ h + q) ke - 2c√ka

Minor σ1 = q + ƴ h

At ground level σ3 = qke -2c√ka

Red Soil k = 0.333

C = 20 kN / m2 ƴ = 16 kN / m3 σ3 = (ƴ h + q ) ke - 2c√ka crack develops where σha = 0 (0.333 x 7.5) + ( 1.35 x 16 x ht x 0.333) - 31.18 ht = 3.983 m

Max depth (Hc)

Hc = 2ht = 2 x 3.983 = 7.97 m

Mechanics for Lateral Stresses due to soil and surcharge

2.0

5.0

Ground Level

Backfill q

Y

X c = 20 kPa ø = 30° ƴ = 16 kN / m3 q - imposed load for garages and vehicle traffic areas q = 5.0 kN / m2 applying ULS partial factors of safety q = 1.5 x 5 q= 7.5 kN / m2 σha live = 7.5 x 13 = 2.5 kN / m2 σha dead = 0 - 2 x 20 x 0.333 = - 23.094 kN / m2 applying ULS partial factors of safety σhadead = 1.35 x 23.094

=-31.18 kN / m2 σha 0m = 2.5 - 31.18 =-28.68 kN / m2

Mechanics for Lateral Stresses due to Surcharge at the top of the cut σha live = 2.5 kN / m2 σha dead = 16 x 4.3 x 13 - 23.094 = - 0.161 kN / m2 applying ULS partial factors of safety σha dead = 1.35 x - 0.161

= - 0.2169 kN / m2 σha 4.3m = 2.5 - 0.2169 =2.2831 kN / m2

Mechanics for Lateral Stresses due to Surcharge at the bottom of the cut

Unsupported excavated face cracking analysis

1.0

Figure 1: Excavation for lochab perimeter wall

3.0

4.0

Existing ground level

Backfill

Y

X

Tension crack

Maximum depth of excavation

6.0

Figure 2: Depth of crack for lochab retaining wall

Figure 3: Lateral earth pressure diagram due to symmetry w = 15.24 kN / m 2 load = 12 bh

= 1 2 x 15.24 x 2.117

= 10.92 kN

R

10.92 Cos 45 = 10.92 / R

R = 15.44 kN fy = 500 N/mm2

Asreq = 15.44 x 10 3 / 0.87 x 500 = 35.49 mm2

Provide 1 row of D12 @ 1000 mm As prov = 113.098 mm2

7.0

Soil Nails Analysis

,0

8.0

FACILITY MANAGEMENT

U.S. EMBASSY NAIROBI

P.O. BOX 606-00621

NAIROBI, KENYA

qkA - 2c√ka ƴ hka

-28.68 kN/m2 30.96 kN/m2

-28.68 kN/m2

2.28 kN/m2

Shotcrete Concrete/

Plaster on BS MESH

File details come from the government source that posted it. Updated .