harder ones

What are the different types of ladders, key access equipment information and general information?

Ladders should be placed at and angle of 75 degrees or 1 in 4 and should protrude 1 meter or 5 rungs. Check ladder such as, cracks, damaged rungs or anti slip pads. Never use a painted ladder. Ladders should be before use and every 3 months.

• Most common type of ladder or step ladder is Class EN 131 (replaces old British standard class 2) : commercial light trade use - max load 150kg. Fibreglass material mainly.

• Class 1: Blue

• Class 3: Red

• Pole ladders - used for access scaffold, can be up to 12m in length.

• Extension ladders, can be split into sections which can be extended to reach the required height.

• Telescopic ladder, 780mm closed but stretches to 3.3m when extended.

How can support, fall prevention and general safety can be introduced?

Depths exceeding 1.2m is when supports and control measurers need to be introduced such as guard rails to prevent falls, scaffold supported by timbering and props and exposed services are supported. stop blocks and safe separation need to be introduced to stop plant falling into excavations as well as, barriers to protect the public. Create steps and provide ladder access or other safe ways of getting in and out of the excavation.

What are BS 3036 semi-enclosed rewireable fuses used for , made of, pros and cons of this fuse and how are they colour coded?

This is a safety devices used to protect electrical circuits from overcurrent and short circuits.

• Consists of a fuse holder, carrier (porcelain/Bakelite), and fuse wire element

• Works by the fuse wire melting when excessive current flows, breaking the circuit

Colour codes:
5 A white
15 A blue
20 A yellow
30 A red
45 A green

Advantages:

• Cheap

• Can be rewired and reused

Disadvantages:

• Can be rewired incorrectly

• Slow to operate

• Inconsistent performance

• Risk of exposed live parts

• Fire risk if incorrect wire used

• Needs replacing after operation

What are the roles in construction and what do each role do?

• Project manager - pays for the project and decides what gets built

• Contracts manager - controls the whole project

• Oversees multiple sites/contacts and makes sure project run profitability

• Site manager - runs one construction site day to day

• Supervisor - organises workers and checks work is completed correctly

• Foreman - leads one specific trade team and allocates work