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WorksheetsEntrance Quiz for Structural Timber Design
Total questions: 10
Worksheet time: 4mins
Timber is known as a sustainable material. Using timber, a lot of benefits can be acquired to society and the environment EXCEPT
Tree released CO2 and absorbed O2
Harvesting trees keeps the carbon imprisoned in the wood
Timber buildings will require less energy to heat or cool
Timber building can be reused in another project
All the products below are engineered timber, EXCEPT
Glued laminated timber
Parallel strand lumber
Dowel laminated timber
Structural sawn lumber
According to BS EN338, strength classes for D24 is classified by referring to
Compression strength as 24N/mm2 for hardwood timber
Bending strength as 24N/mm2 for hardwood timber
Tension strength as 24N/mm2 for softwood timber
Shear strength as 24N/mm2 for softwood timber
Below is the modification factor involved in bending stress design EXCEPT
Duration of loading, K1
Depth factor, K6
Notched member, K4
Form factor, K5
What is the permissible bending stress for 38mm x 150mm timber joists if the bending grade stresses parallel to grain given as 14.2N/mm2. The duration of loading for these timber joists is long-term loading.
14.62N/mm2
11.65N/mm2
15.26N/mm2
15.62 N/mm2
What is the effective length for a 3.5meter height column with the end of fixed-pinned condition?
2.98m
3.50m
2.45m
7.00m
What is a mode of failure for the short column?
Shearing and buckling
Shearing and crushing
Crushing and buckling
Buckling only
What is the applied tensile stress if the tensile force for the tie structure is 15kN and the net area is 3800mm2?
3.95N/mm2
39.50N/mm2
395.0N/mm2
39.55N/mm2
Which of the following are NOT mechanical fasteners in timber joints?
Wood screw
Bolts
Shear plate connectors
Reinforcement steel
Which one is NOT TRUE about charring rate?
In MS544, the notional rate of charring for the calculation of residual section is measured based on strength group.
In MS544, the notional rate of charring for the calculation of residual section is measured based on density.
Unit of charring rate is in mm/min.
Charring rate is measured in one and two dimensional.
