This document provides a design summary for the mechanical and electrical systems of a proposed industrial building for a fashion store in Lagos, Nigeria. It includes summaries of the lighting, power, HVAC, plumbing, and drainage systems. For lighting, the lumen method was used to calculate lighting requirements. The electrical design includes switches, outlets, and a distribution board. An indirect water supply system using pipes, an overhead tank, and submersible pumps was designed. A septic tank was selected for sewage treatment. Charts provide details on pipe sizes. System layouts are presented for the ground and first floors. The designer learned lessons about properly integrating building services and designing sustainably.

1. INTEGRATED BUILDING
STUDIO
BLD 411
ODUNLAMI OLUWAFEMI SOLOMON
PREPARED BY
170504019

2. TABLE OF CONTENT
 1 BUILDING INFORMATION and LOCATION
 2 MECHANICAL SERVICES
a. Waste pipe system
b. Plumbing system
 3 ELECTRICAL SERVICES
a. Lightning system layout
b. HVAC system
c. Switches and sockets layout
d. Distribution board

3. PROJECT INFORMATION
The proposed industrial development is a fashion store located at 21, Coker
road, Ilupeju, Lagos.
The structure is a story building which consist of the ground floor where the
reception, Admin office, showroom, stores and the first floor where we have
the production room, changing room, CEO office etc.
The site area consist of the main building, gate house, generator house, water
supply system and drainage system.
The structure is powered by the power holding company substation (PHCN)
at Ikeja and has a stand by Mikano generator to supply electricity in the
absence of supply of electricity from the PHCN.
The building compound has a car parking space, the building is constructed
on a 24m by 36m plot of land occupying a building foot print of 244.24 sqm.

4. The proposed building is for industrial use
The design report is prepared to give a clear and
detailed description of all Mechanical and Electrical
systems to meet required standards.
The number of employed staffs are 15; 6 tailors, a
cleaner, a receptionist, 4 admin/sales staffs, 2
persons in charge of storage rooms and a dispatch
rider
The average number of expected visitors per day is
10,
This analysis helps to design the best electrical and
mechanical systems and layouts that best suit the
building considering the purpose of the building and
number of users

5. PROPOSED
LOCATION
LOCATION: 21, COKER ROAD, ILUPEJU, LAGOS STATE.
PROPOSED INDUSTRIAL BUILDING FOR A FASHION STORE

6. PROPOSED INDUSTRIAL BUILDING FOR THE FASHION STORE
ELECTRICAL DESIGN
THE ELECTRICAL DESIGN INCLUDES:
1. LIGHTING FIXTURES CONNECTED TO SWITCH
2. POWER CIRCUIT AND OUTLETS
3. POWER PANEL AND ELECTRICAL METER
4. SERVICE CABLE SUPPLY PATH

7. UTILITY DESIGN
 The lumen method and point method of design were adopted to calculate
the required luminaires and illuminance for each parts of the building, the
compact fluorescent lamp was predominantly used to provide good
energy efficiency, good excellent color, dimming, and many other features
expected of modern light sources
 Lumen method formula
 N = EA/n x F x MF x UF
where N is Number of luminaires
ELECTRICAL UTILITY DESIGN
 MODE OF SUPPLY: underground supply from the electrical supply authority.
 SUPPLY TO BUILDING: 3 phase, 4wires of 415V to supply the whole building

8. Lighting design- The lumen design method was use to determine the lighting layout that will provide the
required illuminance in each room. Its mostly use for interior lighting calculation
Power circuit- the design of the power circuit is base on the anticipated appliance loadings applying the
ring circuit consideration
Air conditioning circuit- the design adopted was the Rule of thumb method of design.
Using reference method B of table 402 A (enclosed) 1 two –core cable, with or without protective conductor
single phase a.c or d.c method of design was use in determining the cable size required for each circuit.
ELECTRICAL UTILITY DESIGN
Mode of supply- underground supply from the electrical supply authority to electrical pole of three phase 4
wire from a secondary distribution transformer.
Supply type system to the building- Three phase meter 4 wire of 415v supply to the whole building from a
three phase 4 wire from a secondary distribution transformer.
Earthing system used- TT system.
Frequency- 50Hz
Distribution board- Type 100A TPN 5 way MCB Distribution board to each floor and external
surroundings
Building services
electrical design

9. GROUND FLOOR LIGHTNING
LAYOUT

10. FIRST FLOOR LIGHTNING SYSTEM
LAYOUT

11. GROUND FLOOR HVAC SYSTEM LAYOUT

12. FIRST FLOOR HVAC SYSTEM
LAYOUT

13.  A minimum of 2000 litres/day is consumed so therefore
provide 2000 liters capacity storage tank for 2 days
 the generator used to power the building and pumps in
absence of light from the authorities is the Mikano Generator
i.e the Mikano 18KVA sound proof power generator
Factors aiding the selection of pipes
 Cost effectiveness
 Pressure at the source of water supply
 Restriction on water flow velocity

14. ELECTRICAL DESIGN DISTRIBUTION
BOARD

15. Building services
mechanical design
Water supply system adopted is an Indirect system of supply
This is a system of water supply where water is fed from the mains usually controlled by a valve to
the overhead tank and then supplies water to different floors by gravity.
Submersible pump capacity for borehole design-1.0 hp Crompton 7STG water pump. Assumed flow
rate- 5GPM
Surface pump capacity for overhead tank design-1.5 hp City pump. Assumed flow rate- 5GPS
Average users of water per day- 25 persons
Daily water supply- 2000 liters/day
Time take to fill tank- 12 minutes
Supply pipe used- PPR pipe (polypropylene random polymer)
Drainage pipe used- PVC pipe(polyvinylchloride)
Capacity of soak away- 6.68m^3 LxBxH= 1.8x1.5x2.1m
Capacity of septic tank- average waste flow- gallon/day= 336 gallons.
Method of design- Estimated daily waste flow method. A separate drainage system was adopted for
waste discharge

16. PIPE REFERENCE AND FITTINGS

17. PLUMBING SYSTEM

18. WATER SYSTEM
THE SUPPLY LINE (PIPE) WAS
CALCULATED BY ADOPTING THE
STRAIGHTFORWARD SYSTEMATIC
METHOD BASED ON TABULATION USING
PARAMETERS SUCH AS:
• LOADING UNIT
• FLOW RATE
• PIPE LENGTH (EQUIVALENT/ACTUAL )
• HEAD (TOTAL/AVAILABLE/RESIDUAL)

19. MECHANICAL SERVICES
PLUMBING
 the indirect system of supply was used to meet the
anticipated water demand needs, to supplement the
feeds from the water corporation, and provision and
storage in time of need.
 the motor driven auger is used with a technique OG
Pat drill 201, rotary motor driven machine.
 Depth of borehole: 18m depth (Shallow borehole)
 Diameter of borehole: 100mm
 storage tank capacity of 2000liters/day

20. PROPOSED INDUSTRIAL BUILDING FOR FASHION STORE
SEWAGE TREATMENT
SEPTIC TANK WAS ADOPTED AS SEWAGE
TREATMENT STRUCTURE FOR THE
BUILDING.
FACTORS THAT SWAYED SELECTION OF
SEPTIC TANK INCLUDE:
1. LOWER COST OF CONSTRUCTION AND
MAINTENANCE.
2. ENVIRONMENTALLY FRIENDLY

21. Water supply system and drainage system pipe size chart
For water supply distribution, pipe is selected base on the typical supply pipe diameter(imperial)
For supply system
House mains
Borehole 1”cwp
Water treatment plant 1”cwp
Underground tank 1”cwp
Overhead tank ¾”cwp ( house service pipe fixed to overhead tank supplying water to
ground floor)
Riser pipe ¾”cwp(Riser pipe is connected to the house service pipe supplying water
from ground floor to upper floor)
Wash basin ½”cwp
Water closet ½”cwp
For drainage system pipe selection, is base on the number of fixtures unit/ load
factor.in each toilet compactment there is a total of three water closet and washbasin
Type of
fixtures
Main drain
size
Pipe size (ventilation) Pipe size (drain waste) No of
fixtures
vent trap wwp swp
Wash
basin
2” 2” 2” 2” 3
Floor
drain
2” 3
Water
closet
4” 4” 4” 4” 3

23. GROUND FLOOR WASTE SYSTEM

24. FIRST FLOOR WASTE SYSTEM

25. CONCLUSION
I designed the building with respect to the sustainability
and easily maintainability in respect to construction and
installation standards. I was also concerned about
standards when integrating my services into the building.
I had a better understanding on how designs should be
analyzed and designed for its resourceful use
It was also designed to keep working in case of power or
water failure.
Lessons
 I learnt how to properly design and detail a building in
such a way that it is serviceable and sustainable
 Integration of building services

26. THANK YOU