Stairs

Stairs

Aims of the lesson

• I will explain the purpose of a set of stairs

• I will explain the regulations behind stairs

Lesson Objectives

• You will define the purpose of a staircase

• You will be able to identify the required calclations required by law when constructing a staircase

Make sure you have a pen and paper ready plus the handout which has been emailed to you to fill in.

Stair cases have a lot of required regulations so please write these down for future reference

What are the main purpose for a set of stairs?

• To enable you to travel safely from one floor to another

• To enable you to escape in case of a fire or emergency

Which part of building regulations cover staircases?

• Part K

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Can you name any parts of a staircase?

• Tread

• Riser

• Step

• Banister

• Balustrade

• Apron lining

• Spandrel framing

The tread

• This is the part of the step we put our feet on.

• The minimum length of a step should be how many millimetres?

• 220mm

• This is known as an individual going

The Riser

• This is the vertical part of a staircase in between the treads

• What is the maximum height of a riser?

• Again 220mm but this is maximum where a tread is minimum

• There can be a maximum of 16 treads on a straight flight of stairs any more and we would need a resting place. What would we call this resting place?

• A landing

A Step

• Can you define a step?

• This is a combined tread and riser

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The pitch

• What do we mean by the pitch

• The angle of the stairs what is the maximum pitch in degrees?

• 42 degrees on a domestic staircase

A simple formula to determine if stairs are under the correct pitch

• 2 x rise plus one going = between 550mm and 700mm

• To simplify this we add the dimensions of 2 risers and the depth of one tread if it comes inbetween these dimensions the stairs comply to part k of the building regs as they are under 42 degrees

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Were you paying attention?

5 questions

Multiple Choice

What is the minimum individual going allowed in a domestic staircase?

• 205mm

• 210mm

• 215mm

• 220mm

Multiple Choice

what is the maximum number of treads allowed in a straight run before a landing is required

• 13

• 16

• 15

• 17

Multiple Choice

What is the maximum rise allowed on a single step in millimetres

• 210

• 230

• 220

• 215

Multiple Choice

What is the maximum pitch allowed on a domestic staircase in degrees?

• 40

• 41

• 42

• 43

More regs!

• When you walk up a staircase there is a handrail which is joined to the string with spindles

• The required height of this handrail when climbing the stairs would be between?

• 840mm and 1000mm (1 Metre)

• This changes when the handrail is on a landing where it can be no less than 900mm high

• The maximum distance between these spindles is 99mm WHY???

Head height

• You must have a minimum of 2 metres of headroom when fitting a staircase

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These slides cover the main stair regulations. Did we meet our objectives??

You will now be assigned two pieces of home work on the quizizz format i will send out codes at the end of the lesson.

Next lesson

Our next lessons will involve the correct procedures when measuring and fitting a staircase.

Followed by the complex practice of setting out and assembling staircases, we will combine this theory with practical sessions where you can put your new found knowledge into practice.