College of Engineering - Architectural Engineering
ARCH 251- Construction Technology I
Assignment 9
Answer the following questions:
1. How waste water goes from the sanitary fitting to the above-ground
drainage connection? What are the methods, and draw sketches for
that?
2. Explain two of the main sanitary fitting in a house? Draw sketches
for their drainage connection?
3. What are the purposes of the mains water?
4. How can water be heated?
5. Define each of the following?
• Consumer unit.
• Electrical wiring.
6. If an electric heater is rated at 2 kilowatts, then calculate how much
current it uses (the pressure = 240 volts)
7. What is the relationship between the current flow and resistance?
8. Draw two sockets on a 13 amp ring main?
1- You install above-ground drainage after the roof is put on the building to protect the tting from the
weather. The pipework runs along the surface of the walls so that it is accessible for cleaning and clearing.
The 100mm outlets for WCs are connected by branch pipes to vertical pipes, called soil stacks that connect
to the drains inside or outside the building. The water seal or trap formed in a WC pan ensures that gases and
smells from the drain do not enter the building.
Other sanitary ttings such as baths, basins, showers and sinks have smaller outlets, which cannot be directly
connected to the drains. They are connected to the underground drains by one of these methods:
A-The wastes ow through above-ground pipes and discharge over or ow into trapped gullies at the top end
of the drains;
b-Wastes ow from above-ground pipes into the soil stack that carries the WC waste.
2-
A shower may have independent plastic, concrete or glazed reclay base. It can be
attached to mixer tapes on a bath or it can ow directly from pipes attached to the wall onto the oor
A sink in a kitchen is usually stainless steel so that it will be lightweight and durable. It
may come with a draining board, which stands on a timber cupboard to control the waste and supply pipes.
3- •Water for domestic building is mainly used for drinking, cooking and washing
4-electric boilers or immersion heaters; ➢solid fuel boilers;
➢gas or oil boilers;
➢Solar power collectors.
5- consumer :The supply in a house passes from the meter to a distribution panel
Domestic electrical circuits are wired with cables that consist of three wires, whish have the standard colors.
6- I-8.33
7- I=V/R
I is the current measured in amperes (amps). V is the pressure or voltage (volts). R is the resistance, which is
measured in ohms
