SHS on a drawing means Square Hollow Section — square steel tube, sized as outside face by outside face by wall thickness, as in 100x100x5.0 SHS. SHS stands for Square Hollow Section: square steel tube used structurally. Posts, portal legs, bracing, lintels, handrails, verandah and carport framing — anywhere you want a closed section that is equally stiff both ways and … [Read more...] about What Does SHS Mean on a Drawing? Square Hollow Section
Technical Dictionary
What Does UB Mean on a Drawing? Universal Beam
UB on a drawing means Universal Beam — the hot-rolled steel I-section used for beams in Australia, New Zealand and the UK, written like 310UB40.4. UB stands for Universal Beam: a hot-rolled steel I-section that is deeper than it is wide, with relatively narrow flanges. That shape is efficient in bending, which is why the UB is the standard floor and roof beam in … [Read more...] about What Does UB Mean on a Drawing? Universal Beam
What Does CRS Mean on a Drawing? Centres
CRS on a drawing means centres — the centre-to-centre spacing of a repeated element, as in studs @ 450 CRS, and not the clear gap between them. CRS on a construction drawing means centres (spelled "centers" in the US): the centre-to-centre spacing of a repeated element, measured from the centreline of one member to the centreline of the next. It is not the clear gap. 90 … [Read more...] about What Does CRS Mean on a Drawing? Centres
What Does DIA Mean on a Drawing? Diameter
DIA means diameter — the distance across a circle through its centre, twice the radius. Written Ø on mechanical sets, DIA on architectural and civil sheets. DIA is short for diameter: the distance right across a circular feature, measured through its centre. It is twice the radius. On a drawing it sizes holes, round bar, dowels, bolts, pipes, cores, bored piers and round … [Read more...] about What Does DIA Mean on a Drawing? Diameter
What Does TOS Mean on a Drawing? Top of Steel
TOS means top of steel: the level of the top of a steel member, normally the top of a beam's top flange, used to set out the frame. What TOS means TOS means top of steel - the level of the top of a steel member. For a beam that is the top of the top flange. For a column it is normally the top of the cap plate, though some offices quote the top of the shaft instead, so it … [Read more...] about What Does TOS Mean on a Drawing? Top of Steel
What Does TOC Mean on a Drawing? Top of Concrete
TOC means top of concrete: the level of the finished concrete surface before any screed, topping or floor covering is added. What TOC means TOC means top of concrete - the level of the concrete surface at that point, as the concreter will leave it, before any screed, topping, tiles or floor covering go on. It exists as a separate callout because concrete is rarely the … [Read more...] about What Does TOC Mean on a Drawing? Top of Concrete