Presentation1

SCALE, ANNOTATION, WORKING DRAWING Why and how scale is used for documenting drawing projects.

Because construction projects are too large to be drawn on a sheet of papar. It is impossible for us to draw in 1:1 for many buildings, therefore we have to use a scale re reduce the size of drawing.

There must be scales under each drawing, people can therefore read different drawings accordingly and accurately.

What is the common scale and units to use in the construction documentation 1:20, 1:50. 1:100 are commonly used scales in construction documentation.

Millimeters are commonly used.

CONSTRUCTION DOCUMENTATION TOUR

E-learning Span is the distance measured between two structural supports.

Spacing is the repeating distance between a series of like or similar elements.

Concrete systems Slabs of various types are used to span between structural supports, including one-way or two-way slabs.

Steel systems Steel framing systems take various forms, with some utilizing heavy gauge structural steel members and others using light gauge steel framing.

Timber systems Timber floor framing systems use a combination of bearers (primary beams) and joists (secondary beams).

Glossary Appendix Joist Joist is one of the horizontal supporting members that run between structures to support ceiling or floor

Bearer

Bearer are timers that are attached to support the joists.

Girder

Girder is a support beam used in construction and horizontal support of a structure which Supports smaller beams

Concrete Durability/life span

Typically durable

cost

Normally cost effective, but depend on labours

sustainability

Non renewable but long lasting

conductivity

Poor conductor of heat and electricity

ductility

Very low

reusability

Quite low, can be reused partially only

flexibility

Very low

Hardness

Very high, can be scratched with metallic object

fragility

Low, can be chipped with hammers

density

Quite high, 2.5 times the density of water