Section A - 2020 Flashcards
An imposed load is also known as a…
Live load
The symbol used in Eurocode 2 for the characteristic yield strength of steel reinforcement is….
Fyk
In the design of reinforced concrete beams, the symbol ‘d’ denotes…
The effective depth of the beam
A reinforced concrete beam 800mm deep spans a clear distance of 6m between two supporting concrete walls. Each wall is 200mm thick. The effective span of the beam is…
6.2m
How is effective span calculated?
Clear span + (2x half of wall thickness)
A reinforced concrete column supporting the seaward end of a concrete pier or jetty would be classified in Eurocode 2 as which of the following exposure classes?
XS1, XS2, XS3, XD3, None of the above
XS3
The minimum cover to reinforcement in a simply-supported reinforced concrete floor slab (grade C20/25) located internally in a building, with 2 hours of fire resistance required, assuming H10 main reinforcing bars are used, is:
20mm, 25mm, 30mm, 35mm, 40mm
35mm
A slab has been designed requiring 750mm squared of longitudinal reinforcement per metre width. Which of the following combinations of size and spacing of bars is most appropriate?
6mm dia. 50mm spacing
12mm dia. 150mm spacing
16mm dia. 175mm spacing
20mm dia. 350mm spacing
25mm dia. 500mm spacing
12mm dia. at 150mm spacing
On a reinforced concrete detail drawing, a particular reinforcing bar is labelled as follows: 16H20-1-200T2. In this case, the letter ‘T’ means:
The bar is located near the top face of the concrete
The moment used for the design of a reinforced concrete slab is normally expressed in the following units:
kNm/m
In which part of a masonry arch would you expect tension to occur?
Immediately above the extrados of the arch.
Why are buttresses present on the external walls of medieval cathedrals?
To cater for the outward thrusting forces from the roof of the cathedral
Which of the following describes a ply-web beam?
- An I-section in Timber
- a rectangular beam of glulam
- a rectangular box section in timber
- a glued laminated timber product
An I-section in timber
Oak is a timber species which is best described as…
A temperate hardwood
The problem of lateral torsional buckling is addressed in structural steelwork beam design by ensuring…
The beam is physically restrained from moving sideways
