Design Structure using standard solutions

Architects can design simple structures using 'Standard Solutions'. Standard Solutions are engineer calculated solutions, that are deep to satisfy with the BCA/NCC.

These 'Standard Solutions' are often call 'Australia Standards'. Some times they are manufacturer's engineered solutions lab test to prove compliance.

Step by Step using Standard Solutions (AS1684.2 and 1684.4) to design structure

Overview

In Australia, there are two ways to confirm the design complies with the Building Code Australia (BCA) / National Construction Code (NCC).

Acceptable Solutions
Engineer Design

Acceptable Solutions are solutions that are deem to comply with the BCA/NCC. For example, if the floor joist table shows a 200x45 floor joist can span up to 3.5m, we can specify this floor joist for any span shorter than 3.5m.

If Acceptable Solution can not solve a specific situation or if the building is large (e.g. anything bigger than 3 rooms renovation). Engineer will be engaged to design. Engineer can solve complex design, and can specify more efficient solutions, hence cheaper to build.

Request from Supervisor to access AS 1684.2 or 1684.4. These Australia Standard cannot upload to the website due to copyright.

Overview

Chase load from Roof (Top) to Ground (Bottom)

Detail (30 mins)

Chase load explained

20221123 RR 5 Darlinghurst Place - We Specify Structure.pdf

* Skip any irrelevant steps.

** We avoid designing 2 storey house structures. Engineer design is often more efficient.

The End Goal

This drawing is the example of the end of we want to achieve.

When designing the structure, start from top and work to the bottom. For example:

Step 1 - Roof
Step 2 - Ceiling
Step 3 - Wall Lintel
Step 3 - Repeat 1 & 2 for GF Roof & Ceiling
Step 4 - Bracing
Step 5 - Floor Joist
Step 6 - Pile Foundation

Overview of Timber Framing Code

Step 1 - Roof Rafter

Step 2 - Ceiling Joist (Only required if not using truss, and ceiling is not fix to rafter.)

Step 3 - Specifying Wall Lintels

Step 4 - Bracing Part 1

Step 4 - Bracing Part 2

Step 4 - Bracing Part 3

Step 4 - Bracing Part 4

Step 4 - Bracing Part 5

Step 4 - Bracing Part 6

Step 4 - Bracing Part 7

Step 4 - Bracing Part 8

Step 4 - Bracing Part 9

Step 5 - Floor Joist

Step 5 - Floor Bearer

Step 6 - Pile Foundation

Definition - Roof Load Width (RLW)

Definition - Ceiling Load Width (CLW)

Definition - Floor Load Width (FLW)

Using Standard Solution to design structure learning:

Standard Solution Structure Learning.docx

Brick piers / column

PosiStrut-Floor-Roof-Installation-Manual_August21_WEB.pdf

PosiStrut

PosiStrut are beams created with timber as top and bottom chord, and steel webs connecting the top and bottom chord.

Widely use for floor for easy pipes installation. Sometimes used for roof rafters for longer span compare to standard timber beams.

WESbeam Span Table.pdf

Wesbeam

Timber beam, lintel, rafter.

Timber product span table.

Note that:

Pergola - Structure that is unroofed. It's timber beams only. Timber members support only self load.
Veranda - Structure that is roofed. Timber members need to support roof load and wind force.

Determining Wind Speed