Joining risers to treads

• 3 methds to joints risers to treads :

1. Butt joint 
2. Rebate joint 
3. Housing joint 

• Secure the treads to the risers with screws . 

1. To prevent rsers comes out of treads as tread tends to bend under people weight . 

Nosing on treads 

• Usually projects 32mm from the face of the riser below . 
• Nosing is rounded for appearance and safety purpose  . 
• Usual finishes to nosings :

1. Square nosing 
2. Splayed nosing 
3. ROunded nosing  .