CLC Blueprint Reading & Technical Specifications 3

Question 1

What does a bold triangle symbol with a number inside it on a detail drawing reference?

Accepted Answer

A detail reference pointing to an enlarged drawing on another sheet

Answer

A detail reference triangle contains the detail number and sheet number, directing the reader to an enlarged view of that condition.

Question 2

A specification calls for lumber to be 'S4S.' What does this mean?

Accepted Answer

Surfaced on 4 sides

Answer

S4S means the lumber has been surfaced (planed smooth) on all four sides, producing consistent, clean dimensions.

Question 3

On architectural drawings, what does the abbreviation 'CLG HT' refer to?

Accepted Answer

Ceiling Height

Answer

'CLG HT' is standard shorthand for Ceiling Height, indicating the vertical distance from finished floor to finished ceiling.

Question 4

Which drawing in a construction set typically shows stair tread depth, riser height, and total run?

Accepted Answer

Stair section or stair detail

Answer

A stair section or dedicated stair detail provides the vertical and horizontal layout including tread, riser, and total run dimensions.

Question 5

What is the meaning of 'UNO' as used in construction specification notes?

Accepted Answer

Unless Noted Otherwise

Answer

'UNO' stands for Unless Noted Otherwise, meaning the stated condition applies everywhere except where a specific exception is called out.

(CLC) Certified Lead Carpenter Practice Test