NABTEB 2024 Carpentry & Joinery Answers

NABTEB 2024 CARPENTRY AND JOINERY ANSWERS

CARPENTRY OBJ
01-10: BCBABBCCDA
11-20: DDACBCBCAB
21-30: BBDCBDACAD
31-40: CDCBBADDDC

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READ MORE; NABTEB Government Answers For Essay & Obj 2024

“`ANSWER FIVE(5) QUESTIONS ONLY“`

(1a)
Natural Seasoning:
(i) Uneven drying
(ii) Warping
(iii) Cracking

Artificial Seasoning:
(i) Risk of overdrying
(ii) High energy consumption
(iii) Possibility of fungal growth

(1bi)
Seasoning of timber is the process of drying freshly cut timber to reduce its moisture content to a suitable level for use in construction or woodworking.

(1bii)
(i) Kiln drying
(ii) Air drying

(Draw the diagram)

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(2)
(Draw the diagram)

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(3a)
(i) Rib: The purpose of ribs in a center is to provide structural support and strength by connecting the vertical and horizontal members, enhancing stability and load-bearing capacity.

(ii) Prop: Props are used in centers to support beams, slabs, or formwork temporarily during construction or repair work, ensuring safety by preventing collapse or displacement.

(iii) Brace: Braces in centers serve the purpose of bracing or tying various components together to prevent movements, especially lateral ones, improving the overall stability and rigidity of the structure.

(iv) Lagging: Lagging is used in centers to provide temporary enclosure or insulation, protecting the interior from external elements such as weather, dust, or noise during construction activities.

(3b)
(i) Fixed Center
(ii) Sliding Center
(iii) Collapsible Center
(iv) Eccentric Center
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(4a)
(i) Crosscut Saw
(ii) Rip Saw
(iii) Tenon Saw

(4b)
(Draw the diagram)

A tenon saw is a woodworking tool used for making precise and clean cuts in wood, particularly for joinery work such as cutting tenons, which are the male components of a mortise and tenon joint.
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(5)
(Draw the diagram)

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*COMPLETED*