Roof Slab Framing Plan

For our 4 x8 lean to example using a 2 4 rafter the depth of the birdsmouth is limited by the 1 3 depth of the rafter rule.

Roof slab framing plan.

An extra floor was required to be constructed which involved converting the original roof slab to a floor slab thereby increasing the live load capacity to 3 kn m 2. One of the most important parts of building a sturdy roof is the initial roof framing plan. A 2 4 wall with a 2 6 rafter can be notched for a 4 seat. Any discrepancies shall be brought to the attention.

Fifth roof floor slab bottom reinforcement plan. The point at which all the rafters are attached to. This will the first point of the rafter measurement line. Fifth roof floor slab layout plan.

No framing or structural members are to be modified notched or cut without the approval of the engineer. Use a framing square to help lay out the notch based on the slope of the roof. Parts of a roof a ridge board is a horizontal member of the roof frame. The design of the upper storey extension was a lightweight strut frame structure and after calculations were undertaken it was shown that the slab could not sustain the additional live load.

Roof framing rafter layout from one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it. In order to do roof framing properly it is important to understand the unique shape and dimensions of your roof since these will greatly impact the geometry of the roof frame. Transfers the load of the roof through the raftersto walls below. The construction of the original building consisted of a reinforced concrete frame with cast in situ trough floors.

The ownner shall familiarize themselves with the drawings.