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Why temporary construction; single and double scaffolding

Short answer

Temporary construction provides safe height access, supports walls, shapes concrete, and aids deep work. Single scaffolding has one row of standards 1.2-1.5 m from wall, putlogs fixed in wall holes; used for brickwork. Double scaffolding has two rows, putlogs on both ledgers, no wall holes; used for stone masonry and heavy work.

Why temporary construction is necessary in building construction? Differentiate between single and double scaffolding with constructional details.

Why temporary construction is necessary

  • Gives workers and materials a safe, stable platform at height.
  • Supports weak walls and trenches during work.
  • Provides the shape for concrete until it hardens.
  • Allows work on deep foundations and repair of old structures.
  • Increases safety, speed and quality of work.

Single and double scaffolding

PointSingle (brick layer's)Double (mason's)
StandardsOne row, 1.2-1.5 m from wallTwo rows: 0.2-0.3 m and 1.2-1.5 m from wall
PutlogsOne end in wall, other on ledgerBoth ends on ledgers, not in wall
Hole in wallNeededNot needed
Used forBrick masonry, plasteringStone masonry, heavy work
StrengthLess rigidMore rigid, stronger
CostCheaperMore expensive
  SINGLE                      DOUBLE
  wall |__ledger__            wall |  ledger  ledger
  wall |--putlog (in wall)    wall |==putlog on both==|
  wall |   standard           wall |  std      std
  wall |   standard           wall |  std      std

Constructional details: standards are fixed on sole plates, ledgers are lashed or clamped at 1.2-1.8 m height, braces (diagonal) are provided on the face and cross braces for stability, boards 40 mm thick are fixed on the putlogs, and guard rails and toe boards are provided.

✓ Answer checked by Claude Opus 5.5 (high effort)

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