Brick bonds in masonry — Dutch bond classification In traditional brickwork, the Dutch bond is regarded as a modification of which standard bond system?

Introduction / Context:
Bonding patterns in brick masonry influence strength, stability, and appearance. Understanding relationships among common bonds helps masons choose patterns that balance aesthetics with structural requirements. Dutch bond is a well-known variant used to enhance visual appeal while maintaining good bonding.

Given Data / Assumptions:

• Standard bonds include English, Flemish, stretcher, and header bonds.
• Dutch bond is a named variation used in facing work and general walling.
• Course arrangement and queen closers play a role in bond development.

Concept / Approach:
English bond alternates courses of headers and stretchers, giving strong through bonding. Dutch bond modifies the English pattern by introducing a header course at periodic intervals within stretcher work or by placing queen closers in a specific manner to improve face appearance while retaining bonding effectiveness. Hence, Dutch bond is linked to English bond as its modification rather than to pure Flemish, stretcher, or header bonds.

Step-by-Step Solution:

Verification / Alternative check:
Textbook illustrations show Dutch bond patterns retaining the strength advantages of English bond while changing face coursing for aesthetics.

Why Other Options Are Wrong:

• stretcher bond: Used for half-brick walls and veneers; lacks through bonding.
• header bond: Rare in thick walls; not the base of Dutch bond.
• single Flemish bond: Combines Flemish on the face with English internally; not the same as Dutch bond.
• none of these: Incorrect because English bond is the correct base.

Common Pitfalls:
Confusing Dutch bond with single Flemish; assuming any decorative face pattern equates to Flemish bonding.

Final Answer:
English bond