Summer 1994
M I
H op kins in Cambridge
28 A
quarterly reviewof current architectural, urbanist and environmental Issues and events in the Cambridge area produced by the Cambridge Associationo f Architects. The views in this newsletter are thoseof the individual contributors and not of the Association.
Cambridge isbeginning to resemblea kind o f Expo site dotted with new buildings by Britain’s best architects. Ina CAA talk at the A rchirecrure Centre on 10th May, Hopkins” associate James Greaves provideda valuable in sighI into two o f these b u i Idin gs: Schlumberger II completed in 1992 and the Emmanuel Theatre now under construction. Extend in g SchIu m be rge r I p rese nted a n in trig u in g p rob Ie m. To s i mp Iy extru de it wouldh ave reinforced an axial co nfig uration u nwa rra nted by th e s ite. In ste a d H o p k in s departed from hissingle sto rey tradition with a two storey pavilion placed across the office wings to createa courtyard. Its mo st strikin g featu re is th e N e rvi inspired first floor slab with ribs following the lines of stress. The ferrocement coffers act as per m ane nt for mwo rk for con creteab ove altho ugh plywood was needed foradditional su ppo rt. Dyes from the ply stained the precious coffe rin g a n d ca u se d so me a n x io u s moments. But this problem was overcome to produce what isu ndoubted Iya technical tour de force.A pity then that the effect is dim inished by the partitions and the low ceiling. As Nervi sh ows, this kind of thing works best in large unencumbered spaces. The roof is of I ig hter co nstructio n; indeed the central part consists of inflated cushions of fl uroca rbon:a series ofg iant transparent lilos. The walls area beautifully ho ned skin of ske fetal steel, b ron zed g Ia ss a n d ven etian b Iin d s (the ir rattIin g p rob Ie m soo n to be cured). Thankfully the cl ient was persuaded to accept the cost of specially cast steel joints which, as at Bracken House,g ivethe building a curiously organic look. E mm an uel Theatre, n ow emerging on th e south side ofE mm an uel Street, alig ns itself with North Court,a subtlety which, though it may be lost on the casual observer, creates interesting routes and spaces and o rders an otherwise incohesivea rea. The acoustic requirements (clea rly onerous) gave Hopkinsa perfect excuse to devel op the
m ason rya esth etic first see n at Lo rds and aga in at Glyndebourne.A three storeye ncircling arcade of load bea ring sto ne is post tensioned vertically with steel rods (reveal ed by sma \\ portholes) and horizontally by tying in tothe sh rin k in g co n crete floo r sIa b.H e re, Greaves pointedo ut, is the modern equivaIe nt of Kin g‘s Cha pel wh e reth e p in n ac les counteract the thrust of the roof increasing the efficiency of the structure. On the roof we also have th e Hopkins equivalent of the traditional I ead roof. As at the Mellor facto ry and G Iynde bo urnep refab r icated pane1s of I ead and ply are slotted together on site. T h e taIk wa s a c Ie a r state me nt o f th e H o p kin s p h il os o p hy. F ro m th e I ig htwe ight h ig h -tec h of S c h Iu m b e r g e r, t h rou g h t h e hybrid M ound Stand to th e lea d and sto n e of E mm an ueI we see a st e ad iIy d ev el o p ing vocabulary of form and deta il which strives to_use materials with honesty and econ omy. The process resembles the development ofa ra n ge ofq uaI ityca rs w ith t h e s u cc e s sfu I m od ificat io ns of o ne m o del b u ilt-in to the n ext. Whi ie sometimes verg in g o n the selfconscious (the where-sh all-we-put-the-teflo ntentsvnd rome) there is no do ubt that it has produceda series of stun ning buildings. Jeremy Lander