Question

USING UNITED STATES IBC CHAPTER 6

1. An exterior wall is defined as a building enclosing wall that has a minimum slope of ____ degrees with the horizontal plane.

A. 45               B. 60               C. 75               D. 90

2. Veneer secured and supported through the adhesion of an approved bonding material applied to an approved backing is considered as _______ veneer.

A. adhered                  B. anchored                 C. attached                  D. spandrel

3. A minimum of _________ shall be attached to exterior sheathing in order to provide a continuous water-resistant barrier behind the exterior wall veneer.

A. one layer of No. 15 asphalt felt

B. one layer of No. 30 asphalt felt

C. two layers of No. 15 asphalt felt applied shingle fashion

D. two layers of No. 15 asphalt felt applied shingle fashion

4. Precast stone facing shall be a minimum of ____ inch in thickness in order to be acceptable as an approved weather covering.

A. ½                            B. 5/8                          C. ¾                            D. 1

5. When installed in a compliant manner, exterior masonry veneer having a maximum installed weight of ____ pounds per square foot may be supported on wood construction.

A. 15                           B. 20                           C. 25                           D. 40

6. What is the minimum permitted thickness for metal veneer mounted on approved sheathing on wood construction?

A. 0.0149 in                B. 0.0224 in                C. 0.0478 in                D. 0.0630 in

7. List the performance requirement(s) of weather protection of exterior walls as per code.

8. Use of wood, masonry, concrete and several other materials are permitted in the code for the construction of exterior walls. Name five (5) more approved materials.

9. List the specifications for the wood veneers on exterior walls of Types I, II, III & IV buildings.

10. The code permits the use of combustible materials in the construction of exterior walls of Types I, II, III & IV buildings, however, with some limitations. List four (4) such limitations.

Answer 1

1) The minimum slope is 60 degrees according to the code.

2)It is considered as Adhered veneer.

3) One layer of No 15 asphalt felt shall be attached to external sheathing.

4) It shall be a minimum of 5/8 inch in thickness.

5) 40 pounds per square foot may be supported on wood construction.

6)The minimum permitted thickness is 0.0149 in.

7) Performance requirement of weather protection of external walls

• Flashing to be included in Exterior envelope
• Prevention of Water Accumulation with a water resistive barrier and proper drainage
• Condensation Protection

8)The materials approved for external walls are

• Metal
• Plastics
• Polypropylene siding
• Vinyl siding
• Glass unit masonry

9) Specifications of wood veneer for external walls

• Nominal thickness - 1 inch
• Exterior hardboard siding - 0.438 inch
• Exterior type wood structural panels - 0.375 inch
• Max height -40 ft
• Maximum projection from the building wall = 24'' ( veneers with open spaces are used )

10) The limitations on use of combustible materials are

• 1)In case the external wall coverings are combustible,provided the fire separation distance is 5ft or less , the area of the coverings will not exceed 10 percent of the total area of wall.
• 2 )Height limitation - 40 ft
• 3)When the wall covering is made of fire retardant treated wood , there is no limitations on its area.
• 4 )Specifications of wood veneer for external walls

• Nominal thickness - 1 inch
• Exterior hardboard siding - 0.438 inch
• Exterior type wood structural panels - 0.375 inch
• Max height -40 ft
• Maximum projection from the building wall = 24'' ( veneers with open spaces are used )