Balliol College, Sports Pavilion

BALLIOL COLLEGE, SPORTS PAVILION

NOVEMBER 2019

7:45 AM, London Bridge. The train from Uckfield just entered the station and is spitting out hundreds of commuters, flowing past us. We hop on the now empty train and leave London to visit our timber sub-contractor’s workshop in East Sussex.

We are fast approaching the construction stage of our Sports Pavilion project for Balliol College in Oxford and were invited to review a mock-up of the roof structure. The pavilion roof is formed of slender sweet chestnut glulam joists; 10 layers are stacked on top of each other, each layer cantilevering further into the space, creating a coffer.

1:50 model

From outside the roof structure expresses itself as a lantern, popping up in the centre of the building. The lantern is fully glazed, allowing for rays of sunshine to enter through the stacked glulam. In the evening, the dense timber lattice will be highlighted by a subtle glow, originating from LED strips, that are recessed in the top of the glulam joists.

The mock-up in Inwood’s (timber sub-contractor) workshop

Lighting strategy detail plan and section

The mock-up was used to test the connection details between the individual layers of glulam, the construction sequence, and the integration of the LED strips and the associated wiring. Preceding the assembly of this mock-up, these details have been worked through and coordinated in many lengthy design workshops, involving the contractor, structural and electrical engineers, the timber sub-contractor, electricians and us architects. As such, it was even more enjoyable to review the mock-up with all the parties involved and to see our combined efforts bearing fruit.

The carpenters who built the mock-up and the Electrical Engineer, Design Manager, and Architect discussing the installation and accessibility of the LED strips

NAZRIN SHAH BUILDING – STEELWORK

JULY 2015

Just over two years since our first tentative steps towards imagining what sort of space a new auditorium for Worcester College might possibly be like, we find ourselves enclosed within a spidery sketch, looking up to the trees through a skeletal enclosure of steel. We watched in excitement as our drawings were scribed across the site, first in neon spray paint and little red sticks, later excavated into deep ravines. We pick our way across the lines that had become so familiar on paper and are now concrete obstacles in a muddy field. The reality of this transition only became real as we stood looking across at the steel columns in this picture. They map out the positions of the stone fins that radiate around the curved facade of the new auditorium, with the sloping beams above us silhouetted against the bright July sky marking the future locations of the sculpted folds to the soffit.