ASSINGMENT-4 INTERNAL SERVICES

A. Service co-ordination is a key part of a project manager’s role.

A. Analyze the challenges of coordinating services on a construction site.

AnswerA) there are several challenges while coordinating services at construction site

Plan for all the internal services along with the main structural plan Structural consultant or engineer with electrical contractor and plumbing contractor or

consultants regarding the plan and execution at the time of planning and also while executing the project stage wise

We need to make sure that all the detailed drawings and we need to superimpose these for the prefect execution

B. Explain what you would do to meet these challenges.

It is necessary to make sure that there is meeting with all the clients before starting of the projects for the better co-ordination

Since authority converges to the top of the organizational pyramid, it is necessary to bring together and coordinate the work of various departments and sections

It requires an efficient system of communication so that each department and section is aware of its role and the assistance to be expected from others

Regular meetings of departmental heads with top management are fundamental to proper coordination

Plans, problems and remedies are discussed for determining best solution

B. The installation of the electrical services in a commercial high rise office construction follows a number of stages.

a. Name the stages and explain what work will be completed in these stages.

Answer

TRANSFORMERTransformers, where required for service installations metered at secondary voltages. The secondary wiring for transformers shall be installed first. Transformer cabinets maybe metal or PVC cabinets.

EARTHINGThe wiring from the transformer shall be transferred to the earth. The load from the transformer is transferred to the earth

METER BOARD The wiring from the transformer shall be connected to the meter The meter board shall be solid plywood fastened rigidly to the wall with air space between the meter board and the wall.

METER INSTALLATIONS The type of meter to be installed will be determined by the size and the type of service to be supplied.

METER SOCKETS AND METER BOXES The meter will be connected on the service equipment.

SWITHBOARDSSwitchboard gives easy access to all the service equipment.

b. Evaluate what key challenges are involved in organizing this work.

ACCESS TO PREMISES It is necessary to provide access to premises during reasonable hours.

CoordinationAvailability of electrical drawing before commissioning of work

RESPONSIBILITY AFTER ELECTRICITY IS DELIVERED To make sure that all the appliances and devices receive the electricity supplied from and after the point of delivery. INTERNAL METER BYPASS LEVER SWITCHAll self-contained meter sockets installed for commercial and industrial customers will have a bypass handle for each metered position. This includes multimeter centers.

SERVICE ENTRANCE ON OR IN BUILDINGS Service entrance conductors will be enclosed in either an approved cable assembly or in conduit and will be exposed to view.

SERVICE CONNECTION Permit from local state inspection agencies so that there shall be final connection between its supply equipment and the customer's service entrance equipment

GENERAL MetersService shall not be rendered until wiring is inspected and approved by the inspecting authority

METER LOCATIONS Marking suitable location for meters and metering equipment on the premises. Meters should be located on the outside of the building free from permanent dampness, chemical fumes, or mechanical danger.

C. Active fire protection is often not specifically designed for the tender stage. It is often specified in terms of the performance requirements and tendered accordingly.

A. Evaluate what challenges this represents for a project manager when co-ordinating this work with other services.

b. You will need to explain the key principles of a fire sprinkler system to answer this question effectively

AnswerA fire sprinkler system is an active fire protection measure, consisting of a water supply system, providing adequate pressure and flow of water through a distribution piping system, onto which fire sprinklers are connected.

Immediate identification and control of a developing fire. Sprinklers detect the fire's heat, initiate alarm and begin suppression within moments after flames appear

Immediate alert. Automatic fire alarm system, sprinkler systems will notify occupants and emergency response personnel of the developing fire.

Reduced heat and smoke damage. At early stages of fire less heat and smoke will be generated when the fire is extinguished.

Enhanced life safety. Occupants and fire fighters will be subject to less danger as fire growth is checked.

D. In commercial construction the use of hvac is very common.

A. Identify the key principles of the hvac system

Answer

HVAC - hot ventilation air conditioning system

To hold the air contamination within acceptable limits Proper air movements Control of moisture content in the air Control of air temperature

B. List the key component of a hvac system

Key components of Hvac distribution system

Air handlers Thermostat Chiller HVAC system Cooling HVAC system Boiler HAVAC systems Air handling unit(AVU) HVAC system Variable air volume (VAV)HVAC system Ductworks & air terminals HVAC system

C. Evaluate the key installation/co-ordination challenges an how these can be mitigated

When placing ducts for hvac in beams or any part of structures the size should be as per design

Capacity of the air conditioner should be calculated as per size of the room and design also come into consideration

Output units should be properly placed Out let pipes space should also be provided in slabs or beams so that it moves internally

in order not disturb the beauty of the building The number of ducts to be provided also depends on design and also the capacity of ac

E. You have a 5 storey residence that requires: hot and cold water services, sanitary plumbing. Each floor has two showers, two toilets, two basins. Create a sketch of the most efficient layout in terms of the construction and co-ordination of the services. Justify your design.

Answer

F. In the same 5 storey residence you are to provide a lift.

a. Where would you position the lift and why?

AnswerThe position of the lift will be placed according to the drawing

This is because the accessibility of the lift will be useful and convenient to the residents Generally lift should be placed at the center of the building stair case Acts as emergency exit

B. Explain what co-ordination needs to happen with the construction of the building structure to accommodate the lift.

AnswerThe planning of the lift should be done at the design stage Foundation should be deeper than its base levelProviding thick walls to support the loadsPlanning runaway width foot liftConcrete pit floor for supporting loads 3200lb

provide coil springs which acts as base for the lift provide lift room for Lift motor provide Power supply system for lift operations provide separate transformers for the lift

c. Explain when the installation of the lift would occur and the actual installation of the lift. Make sure you include all aspects of the lift installation and how other services may be affected.