BCO Guide Specification 2019 - exigere

1 BCO Guide Specification2019 exigere squick view of the BCO s new 2019 Specification for Offices compares the key changes against the specifications set in the 2009 and 2014 BCO s latest Specification acknowledges the value derived from designing a modern workplace focused on people, productivity and highly recommend familiarising yourselves with the full report available provides more context and greater detail around the key drivers for change and their impacts for further information please contact:Dan Fryer, Partner+44 (0) 207 920 Old Street,LondonEC1V Criteria ComparisonBCO Guide Specification 2019 exigere sQuick View to the BCO s 2019 Specification for OfficesexigereKey Criteria Comparison BCO Guide Specification 2019200920142019 Change 8 13 m 8 13 m 8 10 m2(3 m )6 m 6 m 6 m2 (Part B Building Regulations)5 m2 (BS 9999 with discounted provision)Core elements (NIA per person)12 m 10 - 12 m 10 - m On floor services (NIA per workspace)10 m 8 - 10 m 8 - 10 m Plan efficiencyLow rise buildings (up to 9 floors)80 - 85%80 - 85%80-85%Target wall to floor ratio< itemPlan depth and ceiling heightDeep plan:Window to window or atrium15 21m15 21m15 21mWindow to core6 12m6 12m6 plan.

2 Window to window or atrium12 15m12 15m12 15mWindow to core6 to ceiling/clear heightNew build deep - m x m x m x mColumn , and , , and , , and > of primary circulation to NIA15% to 22%15% to 22%15% to 22%Toilet provision NIA per person (high density) m 10 m 10 m Male/ female ratio - Conventional Unisex60% M / 60% F 100% 60% M / 60% F 100% 60% M / 60% F100% of populationDistance of travel to toilet< 100m< 40m wheelchair usersnew itemRaised FloorsTypical floors - new build150mm (overall)150mm (overall)150mm (overall)Typical floors - refurbishment100mm (overall min)100mm (overall min)Trading floors300 - 500mm(overall)300 - 500mm(overall)300 - 500mm(overall)OccupancyWorkplace density (NIA per workspace) 80% Utilisation to be appliedMeans of escape (NIA per person)exigerePage 1exigereKey Criteria Comparison BCO Guide Specification 2019200920142019 Change Cycling provision and showersSecure cycling spaces - 1 cycle per 10 staff1 cycle per 10 staff with the ability to extend cycle spaces per 10 staffability to extendShower facilities1 shower per 100 staff 1 shower per 100 staff or per 10 cycle / Female ratio60% male / 40% female50% male / 50% female.

3 (10%) / 10%Secure lockers1 locker per cycle space1 locker per 10 staff or per cycle requirements:Car loading80% (60-70%)80% m per person with a car loading factor of 80%Waiting time< 25 seconds< 25 seconds< 25 seconds.< 30 seconds where average time to destination is < 80 capacity (up-peak)15%12% (85/10/5)12% (85% up / 10% down / 5% inter-floor)Waiting time (two way lunchtime)< 40 seconds< 40 secondsHandling capacity (two-way lunchtime)12%13% (45/45/10)12% (45% up / 45% down / 10% inter-floor)NIA per person12m 10 -12m Depth of landing:Single passengerPassenger lift bankPassenger lift groupGoods Lift> x car depth and >2100mm; Sum of facing car depth <4500mm; car depthTime to destination< 90 seconds (up to15 floors)< 90 seconds (up to15 floors)< 90 s is acceptable where the associated average waiting time is less than 25 passenger lifts:Travel time from main goods access to highest floor:Rated load 50 60 3000 kgexigerePage 2exigereKey Criteria Comparison BCO Guide Specification 2019200920142019 Change Structural LoadingLive.

4 Ground floor and below ground office kN/m kN/m kN/m Above kN/m kN/m kN/m High load areas (over approx 5% of floor area) kN/m kN/m kN/m - kN/m - kN/m - kN/m Car kN/m kN/m Loading - kN/m - kN/m Plant kN/m kN/m Retail kN/m kN/m Cafes/ kN/m to kN/m depending on flexibility of useBalconies/terracesSame as rooms to which they give access but with a minimum of kN/m Floors, ceilings and services kN/m kN/m kN/m Floor vibrationGeneral office response factor6 8 Dealing floor response factor4 Small PowerOn floor distribution (based on 1 workspace per 10m )25W/m 20 - 25W/m 20 - 23W/m (2W/m )Diversified load (over 1000m )15W/m 13 - 15W/m 13 - 15W/m LightingDaylighting (target)2% average, min2% - 5%2% - 5%Average maintained illuminanceVDU use300 - 500 lux300 - 500 lux300 - 500 luxTask uniformity> > > glare rating (UGR)191919 Electrical load allowance12 W/m (incl task lighting and Cat B allowance)10 W/m (incl task lighting and Cat B allowance)8 W/m2 for Cat A & B (assuming daylight dimming)(2W/m )Lighting energy use15-30 kWhr/m /yr - 8 18 kWh/m /yearexigerePage 3exigereKey Criteria Comparison BCO Guide Specification 2019200920142019 Change ComfortAirtightnessNot more than /hr/m for building at 50paNot more than /hr/m for building at 50paNot more than /hr/m for building at 50paAirtightness - naturally ventilated buildingsNot more than 7m /hr/m for building at 50pa7 m /hr/m for naturally ventilated buildings at 50paOutdoor air12 - 16l/s per person12 - 16l/s per personMinimum of 12 l per person + 10% to l per m for a range of workspace per 10m 1 workspace per 10m 1 workspace per 10m Air conditioned space.

5 Summer24 C 2 C24 C 2 C24 C 2 CWinter20 C 2 C20 C 2 C20 C 2 CMixed Mode/natural vent:SummerNot to exceed 25 C for more than 5% of occupied hours. Not to exceed 28 C for more than 1% of occupied hoursNot to exceed 25 C for more than 5% of occupied hours. Not to exceed 28 C for more than 1% of occupied hoursNot to exceed 25 C for more than 5% of occupied hours. Not to exceed 28 C for more than 1% of occupied hoursWinter20 C 2 C20 C 2 C20 C +/- 2 C Public HealthWater storage15 l/per person per day based on effective density.+ 5 l/per person per day where a kitchen is l/per person per day based on effective density.+ 5 l/per person per day where a kitchen is CriteriaExternal noise intrusion:Open planNR40 (Leq)NR40 (Leq)NR40 (Leq)SpeculativeNR38 (Leq)NR38 (Leq)NR38 (Leq)Cellular officesNR35 (Leq)NR35 (Leq)NR35 (Leq)Building Services:Open planNR40 (Leq)NR40 (Leq)NR40 (Leq)SpeculativeNR38 (Leq)NR38 (Leq)NR38 (Leq)Cellular officesNR35 (Leq)NR35 (Leq)NR35 (Leq)SustainabilityBREEAM rating for new and refurbished officesMinimum: 'Very Good'.

6 Best Practice: 'Excellent'Minimum: 'Excellent' or 'Very Good'. Best Practice: 'Outstanding'Excellent (minimum Very Good)exigerePage 4 Dan FryerPartner5-23 Old Street,LondonEC1V