APG ORIGINAL CLAUSE — ROUNDBAR-BALCONY-SPEC-R6 / RB-900 / GUARDS-RANGE-R3

25October2026.Checked development draft;not for construction/manufacture or NBS-ready submission.

System classification Ss_25_60_05_05 Balustrade and guarding systems,July2026official table.

Published APG business Architectural Products Group Ltd;general enquiries@architecturalproducts.uk.

Confirm actual manufacturing entity and responsible technical engineer.

Product:steel roundbar infill balcony,900mm overall including endplates;top1100mm

above proposed finished-floor datum. CandidateS275JR;exact grade/form/certificates/weldability

to accept. Top/carriers60x10mm,flat posts60x12mm,solid round spindles20mm diameter,

two INSIDE80x10mm lower strips,vertical broad faces;no midrun rail splices.

Round spindles pass through20.5mm drilled top/carrier holes;source3mm-leg underside

annular fillets plus top annular gap fill/flush treatment need qualified WPS/resistance.

Preserve round cross-section and actual annular joint;do not substitute flatbar fillets.

Flat posts face-weld to inside strips,twin4mm-leg72mm balcony envelopes;no qualified

throat/effective length/directional resistance or rigid-joint capacity established.

Support:fascia rowsz-140/-320mm at exact source stations,PLUS top wall ties at BOTH ends.

No Juliet/end-only or freestanding support assumption. Survey actual slab/walls/floor,

edge distances,access/packing and adopt selected anchors/embedment/cure/torque/inspection.

Use FIXING-DEMANDS.json as correlated case-specific force/moment vectors,not independent maxima.

Adopt jurisdiction/use/actions/combinations/deflection,openings/non-climbability/wind/

durability basis. Source3Dgross/rigid and net/pinned studies are sensitivities;member-only

selfweight,local plate/weld/anchor/buckling/contact/warping limits remain. No tested rating.

Obtain competent independent review and representative physical evidence before release.

Nominal source model mass54.053kg excludes actual anchors/finish/packing;

not measured packed mass or a lifting plan. Preserve900mm54kg review flag;valueengineeringLATER.

Select corrosion protection/coating/colour/repair,manufacturing/fit tolerances,jigs/

distortion/weld inspection and approved production/installation drawings before fabrication.

Provide lifting/access/temporary edge protection,anchor QA,as-built IDs,accepted care,

inspection and warranty. Environmental/origin/BIM/certification claims need actual evidence.

See PRODUCT-DATA,GAP-REGISTER,SOURCE-TRACE,INSTALLATION-MAINTENANCE-DRAFT and exact STEP.