Read the General Instructions at the head of the Elementary paper. You are only permitted to attempt six questions.

21. Describe the following bricks, stating the purposes for which they are suitable : - Shippers, grizzles, malm cutters, blue Staffords. (12.)

22. What is the composition of the following stones ; which would you consider the most durable, and why ? York stone, Bath stone, Craigleith stone. (12.)

23. Explain what is meant by rich lime, poor lime, stone lime.

Which will carry the most sand, and why ? (12.)

*24. Diagram of a loaded truss.

Draw, to double the size, omitting as many members as possible, and marking with a x all the remaining members brought into compression by the load. (14.) *25. Plan of a fireplace in a ground-floor room.

Draw, to a scale of 1/24, a section through A - A, showing all the detail of the construction. (14.)

*26. Plan showing the junction of a l -brick wall built in Flemish bond, with a 2-brick wall built in English bond.

Show, to a scale of " to a foot, the arrangement of the bricks in two successive courses. (14.)

*27. Plan of a cross-beam framed into two girders.

Draw, to a scale of 1" to a foot, sections through the joints, showing at A a shouldered or tusk-tenoned joint, and at B a chase-mortised joint.

Under what circumstances would the latter joint be used ? (16.) 28. Give a part elevation and a cross section of a plate girder 2 feet deep, with a " web, connected to flanges, each consisting of two 12" x 3/8" plates ; the rivets to be " diameter, with a pitch of 4". (16.)

29. Draw, to a scale of 3 feet to an inch, an elevation of about half of a wooden roof truss for a 34 feet span, containing the following members: - Tie-beam, 10" x 5". Queen posts, 5" x 3". Principals, 5" x 5". Straining beam, 5" x 6".

Braces, 4" x 2". (16.)

*30. Vertical section through the base of the outer wall of a brick dwelling-house built on a damp site.

Draw, to a scale of " to a foot, showing the joints of the brickwork, and making any alterations or additions you consider necessary to prevent the damp from affecting the walls. (17.)

31. Give a cross section, to a scale of 1" to a foot, through the ridge of a slated roof, showing three courses of Duchess slates centre nailed on 3" x 1" battens, with 4" x 2" rafters, and a 9" x 1 ridge-piece finished with slate ridging.

Also give a similar section showing the details of a lead ridge roll.

(17.) *32. Elevation of a 2" door, glazed above with nine panes and two panels below, bead flush outside and moulded inside.

Draw, to a scale of " to a foot, the outside elevation ; also a section through A - A, to double the scale. (18.)