Week 9: In Detail

By India McKenzie and Grace Winchester

Site: Queens CollegeDetail: Glass block windowLocated on the east elevation of the band room

India, In-Detail

Red line indicates the east elevation in question.

Report

• Detailing decision• Composition• Building process• Pros and cons• Weaknesses

East Elevation

Grace, In-Detail

Roof flashing

Counter levered beams

Metal Bolts

Hidden Gutter

Pre-Cast Concrete Slab

Spacers

Internal Wooden roof beams

Bolts suspending gutter

Wooden rafters suspending celling

Plasterboard

Lips of metal flashing Metal suspender

into concrete

Roof line

Parapet

REPORT

Building Process

The Built detail would have been planned and thought about in preperation for ordering and laying the large pre-cast slabs.

Once in place the roof would be erected with the main roof beams added first, the then colour bond steel sheeting added behind the parapet. Under the steel flasing would be fixed which would then lead into the gutter on the eastern side.

Lastly the counter-levered beams and finishes (seen in the detail as the suspended plasterboard ceiling for the internal room) would be added to the building.

Pros and Cons

Streamline appearance Simplistic building techniques and small project = quicker completion & possibly cheaper labor (as skill set not extensive) New build not complicated by old foundations or existing building problems Can’t see all elements so harder to observe inaccuracies

Where Things Go Wrong

Flashing directing water into the gutter doesn’t extend over the roof = risk of water leaking into the building both at roof/flashing connection Water could travel behind the flashing as it is not shown to be sealed with siliconPossibility water may pool on-top of the parapet as it is not detailed as angling at 2° The gutter must angle down towards the down pipe which must be done in advance whilst the framing around the gutter is being builtDirectly below this detail the glass block wall was put in incorrectly (the concave face was internal so light didn’t penetrate well) so wall was pulled apart to rectify

DP (dot point) 1

DP 2

DP 3

Sustainability

Products are all hard wearing and built to withstand continuous every-day usageWooden products for stud walls and roofing were wooden from a plantation, but this was decided after the build had started (was originally steel members) in an effort to reduce costsThe wood, steel, concrete and glass can all be reused, but it is unlikely this would occur All the products in this detail are new, non are recycled increasing their carbon footprint

Graph shows the Building Materials Used

source:http://epa.gov/climatechange/ghgemissions/sources/industry.html

Economic

Allows for quick building techniques that reduces labor costsAll materials are new so they would cost less Members are typically found in most builds, so relatively inexpensive if accounted for in design and elements such as pre-cast concrete walls