▁open ▁area , ▁the ▁screen ▁wall ▁s its ▁three ▁feet ▁in ▁front ▁of ▁an ▁exp ans ive ▁gla zed ▁cur tain ▁wall ▁and ▁provides ▁sh ading ▁of ▁the ▁upper ▁level ▁reading ▁room ▁while ▁allowing ▁natural ▁day light ▁to ▁enter ▁the ▁space . ▁ ▁The ▁sh ading ▁system ▁allows ▁a ▁reduced ▁dependence ▁on ▁artificial ▁light ing ▁and ▁protect s ▁the ▁Library ’ s ▁collection ▁from ▁harm ful ▁solar ▁expos ure . ▁To ▁take ▁full ▁advantage ▁of ▁the ▁location ' s ▁potential ▁for ▁un ob struct ed ▁natural ▁light , ▁cler est ory ▁windows ▁and ▁transl uc ent , ▁ins ulated ▁fi berg lass ▁pan els ▁on ▁the ▁north ▁provide ▁ill um ination ▁from ▁the ▁sun ▁on ▁all ▁sides . ▁Light ing ▁design ▁firm ▁M CLA ▁valid ated ▁light ▁levels ▁in ▁the ▁large , ▁open ▁room ▁through ▁a ▁detailed ▁analysis . ▁The ▁light ing ▁design ers ▁developed ▁an ▁electric ▁light ing ▁system ▁based ▁primarily ▁on ▁the ▁T 5 ▁linear ▁flu ores cent ▁with ▁a ▁ 3 5 0 0 - K el vin ▁color ▁temperature — the ▁lamp ▁preferred ▁by ▁the ▁client ▁for ▁energy ▁and ▁maintenance ▁efficiency . ▁Special ▁fi xt ures ▁are ▁cant ile ver ed ▁from ▁the ▁tall ▁stack s ▁for ▁vertical ▁ill um ination ▁on ▁the ▁books , ▁and ▁susp ended ▁lum ina ires ▁are ▁mounted ▁over ▁reading ▁tables ▁and ▁work st ations . ▁ ▁The ▁renov ated ▁building ▁was ▁designed ▁to ▁meet ▁LE ED ▁Silver ▁Cert ification ▁and ▁incorpor ates ▁a ▁veget ative ▁green ▁roof , ▁disp lacement ▁air ▁system ,