Deck 21: Heavy Timber Construction

Question 1

What are glued laminated wood domes?

Answer 1

Glued laminated wood domes are designed as a radial arch or a triangulated system. The triangulated arch can span greater distances than the radial arch. The arch acts as both roof and exterior wall.

Question 2

What items can be made from glued laminated wood products?

Answer 2

Columns, beams, joists, rigid frames, arches, domes, and decking can be made from glued laminated or other engineered wood products.

Question 3

Describe how bents are used in heavy timber construction.

Answer 3

A timber frame structure is made up of walls, floors, roofs and bents. Bents are full height frame constructions that run perpendicular to the walls and provide the primary structural posts of the frame. The bents are typically spaced in bays from 12 to 16 ft. (3.65 to 4.87 m) in width. Precut and dressed timbers are laid out on the floor for assembly. The bents are constructed with mortise and tenon connections between column, beam, and bracing elements to produce a rigid, braced frame. The bents are raised in series and braced to one another with horizontal purlins. To provide structural stability, diagonal bracing is used to prevent racking, or movement of the structural frame. Braces are sized to at least half the length of the beam to beam span of the post. A wide range of materials can be used to serve as exterior sheathing between timber members.

Question 4

Type ____ construction utilizes heavy timber in conjunction with light wood frame walls for smaller buildings.

A) III
B) IV
C) V
D) VI

Question 5

____ is/are stronger than solid wood and is/are used for longer spans.

A) Stressed skin panels
B) Plywood panels
C) Groove decking
D) Laminated decking

Question 6

____ connections may be made with metal connectors or wood bearing blocks bolted to a column with split ring connectors to control vertical forces.

A) Beam-to-column
B) Wood-to-wood
C) Purlin-to-beam
D) Beam-to-girder

Question 7

What are the wood products most commonly used in heavy timber construction?

Question 8

A ____ connects the base shoe imbedded in concrete to the arch bracket.

A) buttress
B) bridge pin
C) hinge joint
D) shoe plate

Question 9

Explain how fire resistance is accomplished in heavy timber construction.

Question 10

____ are ring-shaped metal inserts placed in grooves cut into mating wood pieces that are secured with bolts.

A) Shear plates connectors
B) Glued laminated connections
C) Split ring connectors
D) Steel connectors