Block 3

Question 1

Why do you need door closers?

Answer 1

Security, privacy, hygiene, energy conservation, acoustics, fire protection

Question 2

What is the door closer efficiency formula?

Answer 2

Closing force/opening force x 100

Question 3

Door closer standards

Answer 3

BS EN 1154

Question 4

What are uncontrolled door closers?

Answer 4

Gate spring, helical door springs, spring hinges, double actiob hinge, chain link closer

Question 5

Types of overhead closer?

Answer 5

Rack and pinion, cam action, parallel arm, transom mounted

Question 6

What is backcheck in a door closer?

Answer 6

A means of providing resistance with a door control to cushion at a pre determined angle of opening

Question 7

What standard do digital push locks adhere to

Answer 7

BS 8607:2014

Question 8

Locking centres on handles?

Answer 8

57mm and 72mm most common. 47.5mm, 48mm, 48.5mm centres

Question 9

What is the standard for digital locks

Answer 9

BS8607

Question 10

BS EN 1154

Answer 10

Door closer

Question 11

Typical door closing devices

Answer 11

Surfact mounted overhead (rack and pinion), over head concealed, electro magnetic, slide arm, floor spring, elctro magnestic floor spring

Question 12

BS EN 1935

Answer 12

Hinges for doors