Putlog scaffolding is a type of scaffolding that is supported by the structure itself, with the putlogs (horizontal beams) being inserted into holes or sockets in the building walls. Independent scaffolding, on the other hand, is a type of scaffolding that is self-supporting and not attached to the structure being worked on. It is typically used in situations where the structure cannot support the weight of the scaffolding, or where access to the walls is limited.
So the main difference between putlog and independent scaffolding is the way they are erected. The putlog scaffold is supported by the wall while independent scaffolding is erected from the ground up.
Putlog
A putlog is a type of scaffolding that is put on walls and extensions from walls support it. In most buildings that use putlog scaffold, the hole where the putlog is extended from is never covered. It is left that way for future constructions. It is important to note that the walls have to be strong enough to support the weight of a scaffold before it is erected.
Even though it is erected from the wall, there may be some supporters from the ground that helps in distributing and balancing the weight. It is used in construction but is most common in festivals.
Putlog vs Independent scaffolding
| Putlog | Independent |
|---|---|
| It has extensions from the wall supporting it | It is erected from the ground up |
| It offers more stability due to its rigidity | Not as rigid compared to putlog |
| You need fewer materials to erect | Needs more materials for the erection |
| There are uncovered holes left on the wall after removing the putlog | Does not need or leave any holes on the wall |