What size timber do you use for wall plate?
What size timber do you use for wall plate?
Specification: Wall plate shall be 75x100mm C16 timber lined and levelled and set on full mortar bed and aligned with inner face of external wall. Wall plate shall be in min 3m lengths or, where shorter lengths are necessary, these shall be a single length extending across min 3no rafters.
How big can a wall plate be?
6 says: – Wall plates should be in lengths not less than 3m long and joined using half-lapped joints at corners and in running lengths.
How far apart are timber trusses?
Structural trusses usually have between 6′ and 8′ spacing between trusses. So if a great room was 16′ wide and 24′ long, we’d design three trusses for the room — one at 6′, one at 12′, and one at 18′. Sometimes, we might include two more — one at each of the gable ends (at 0′ and 24′).
What size timbers do I need for a roof?
Roof pitch between 30 and 45 degrees strength class C24
| Size of purlins in mm | Maximum clear span 1.5m | Maximum clear span 2.4m |
|---|---|---|
| 225 x 63 | 3.60 | 3.19 |
| 175 x 72 | 2.94 | 2.49 |
| 200 x 72 | 3.36 | 2.84 |
| 225 x 72 | 3.77 | 2.84 |
Do you put DPC under a wall plate?
They apply a thin layer of mortar on the top coarse of bricks, then the DPC, then another thin layer of mortar and then bed the wall plates into that. They strap the wall plates to the brickwork before the mortar has gone off.
How far apart should wall plate straps be?
2m centres
a minimum cross section of 30mm x 2.5mm and spaced at a maximum of 2m centres (galvanised steel straps are generally acceptable) or proprietary straps and fixings. fixed to the wall, or turned into a bed joint.
How are wall plates calculated?
WALL PLATE is the timber/wood that are placed on top of blocks or roof beams as the case may apply, so for the fastest way to calculate this, is to add the entire walls length and divide by 3.6m to know the numbers of pieces you need.
What are standard truss sizes?
Going by those numbers, it stands to reason that a 32′ truss is the average size of a truss for a home in the US. The most commonly used trusses in residential construction are fink – or standard – roof trusses.
How far can a 2×4 truss span?
A 2×4 can span a maximum of 6′ 7” when spaced 16” apart and used as a floor or deck joist. When used as a ceiling joist or a roof rafter, a 2×4 can span up to 7′ 3” spaced at 16”, and 6′ 4” when spaced 24” apart. Due to the small spans of 2x4s, they often are not used in horizontal load-bearing capacities.
What size timber do I need to span 4m?
Thus, for 4m span you will need a 47×220 mm size of timber as floor joists at standard 400 mm spaced centre to centre.
How far can timber span?
Spacing (distance apart) of joists – centres
| Size of joist mm | 400mm | 600mm |
|---|---|---|
| SPAN metres | SPAN metres | |
| 38 x 97 | 1.72 | 1.21 |
| 38 x 122 | 2.37 | 1.76 |
| 38 x 140 | 2.72 | 2.17 |
Can you screw a wall plate down?
you just hand the restaint straps on the wall plate, screw into the wall plate with wood screws and screw into the blocks with screws into brown wall plugs.
