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The partition of existing rooms and the limitation of rooms to be built by the erection of partition walls are governed by various criteria:
The rooms must be accessible.
- Existing doors are to be used.
- Existing walls can be broken through for door openings.
- Doors can also be built into partition walls.
Figure 3
1 room to be partitioned, 2 existing door, 3 partition wall to be built, 4 building-in range of partition wall
Figure 4
1 partitioned rooms, 2 existing door, 3 partition wall built in, 4 door to be made
The rooms must have ventilation facilities. Existing windows can be fixed points for partitioning of rooms.
King posts and angle braces in attics are to be taken into account for limitation of rooms. The floor space of the rooms to be built is limited by the roof structure
Figure 5
1 king post, 2 attic beam, 3 angle brace, 4 roof rafter, 5 trussed purlin, 6 room limitation by king posts, 7 inferior purlin
Trussed purlins in attics are fixed points for height limitation.
They limit the height of the rooms to be built.
Figure 6
1 attic beam, 2 king post, 3 angle brace, 4 trussed purlin, 5 height limitation by trussed purlin
The location of the wooden beams of a wooden beam ceiling may have influence on the floor space dimensions of the rooms to be built.
The location and straining direction of wooden beams can be concluded from uncovered nailing.
Figure 7
1 wooden beam, 2 straining direction of boarding, 3 foot runner, 4 head runner, 5 post, 6 uncovered nailing of boarding
Partition walls must not be erected between the wooden beams of boarded floors.
If this cannot be avoided because of the distribution of rooms, the runner must be statically verified and be supported by the walls bearing the wooden beams.
Figure 8
1 wooden beam, 1 straining direction of boarding, 3 foot runner, 4 head runner, 5 post, 6 uncovered nailing of boarding
Partition walls on wooden beam ceilings must be designed as light-weight walls. The light-weight wall comprises the wooden framework with surface covering (see Fig. 1 and Fig. 2).
Why do king posts of a roof structure limit the floor space of the rooms to be built?
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What is the effect of trussed purlins?
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Partition walls must not be erected between the wooden beams of boarded floors. Give reasons for this statement!
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