to increase the strength of the wall

to provide space for the brick ties

to stop moisture getting inside the building

to make it easier for the outside face of the bricks to align

to insulate the building

Va=+2kN, Ha=-2kN, Ma=-20kN.m

Va=+5kN, Ha=-2kN, Ma=-25kN.m

Va=-2kN, Ha=+2kN, Ma=-20kN.m

Va=-7kN, Ha=+2kN, Ma=-25kN.m

Va=+2kN, Ha=-7kN, Ma=-25kN.m

will feel tension in the left side column and compression in the right column with only positive bending in the beam.

will feel compression in the left side column and tension in the right column with shear and bending only in the beam.

Is statically determinate because it has two pin supports and four unknown reactions.

will feel axial force, in the top beam and diagonal from the top right joint to bottom left pin support

will feel tension in the left side column and compression in the right column with  shear and axial force only in the beam.

All rotations and translations are allowed.

 All rotations and translations are restrained.

Translations about the x axis is allowed but all other translations and rotations are restrained.

Translations must be restrained in the x & y directions while allowing rotations 

Rotations are restrained but translation along the y axis is allowed.

Va=+2.7kN, Ha=2kN, Vb=39.3kN

Va=+2.7kN, Ha=0, Vb=39.3kN

Va=-2.7kN, Ha=0, Vb=+39.3kN

Va=-12kN, Ha=0, Vb=25kN

Va=+12kN, Ha=0, Vb=+25kN

to provide cross ventilation

to extend the life of the timber

to minimise the likelihood of termites

all of the above

to keep the timber dry

All horizontal bays of a multi-bay structure must be braced.

A pin-based post and lintel frame can be considered a stable rectangle.

Only one bay of a single level multi-bay structure needs to be braced.

Only one level of a multi- level frame needs to form a stable rectangle.

A portal frame must have rigid base supports to form a stable rectangle.

pad footing

point footing

beam footing

all of the above

strip footing