- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 07 Apr 2021
|The bond stones seen on the end of the right wall of the Footpath at Nab End, Longwood extend across the width of this tall, battered, dry-stone wall and serve to strengthen it.
A bond stone (also known as a bonding stone, boutisse, through stone, tie stone, parpen, parpent or parpend) is a large stone which passes through a wall from one side to the other. The purpose of the bond stone is to lock the layers of the wall together and reinforce the structure.
See also Perpend
 Related articles on Designing Buildings Wiki
Featured articles and news
Dealing with draughts and reducing heat loss.
Managing Partner at Onyx and third gen project manager.
Expectation types, management and performance gaps.
Appointments, re-appointments and six changes a year.
New ways to manage the housing crisis.
Consortium seeks signatories for open letter by February 29.
Meaning, understanding and implementation.
Kick-start attempts causes 50% jump from December.
From climate to cost to cold bridges and design flexibility.
In a changing world at the APM PM SIG conference.
The glass product that opened up new possibilities.
Campaigning for buildings of all periods.
Full life cycle assessments, impact categories and more.
Get to know the new requirements and the new terms.
Reporting on Payment Practices and Performance Regs.
The ultimate companion for building services excellence.