Building Materials
The type of bond provided in brick masonry for carrying heavy loads is

Zigzag bond
Double Flemish bond
Single Flemish bond
English bond

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Building Materials
Sapwood consists of

Innermost annular rings around the pith
Portion of timber between heartwood and cambium layer
Thin fibre which extends from the pith outwards and holds the annular rings together
Thin layers below the bark

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