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ידע על PEB

Building components

Every part of a PEB – primary framing, secondary members, cladding, accessories and special structures.

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Building components

Fundamentals Frame systems Components Design Materials Fabrication Erection Standards Applications WSC products WSC solutions

Primary framing

Tapered I-section rigid frame columns highlighted in a 3D model of a pre-engineered steel building

ComponentsFrame columnsRigid frame columns in a PEB: function, tapered I-section sizes, steel grades, pinned vs fixed bases, design checks, fabrication and erection QC.

Tapered rafters of a gable portal frame highlighted in a 3D pre-engineered building model

ComponentsRaftersPEB rafters explained: tapered I-section roof beams of the portal frame, typical depths and slopes, splices, bracing, design checks and erection.

Tapered welded I-section column and rafter of a pre-engineered steel frame

ComponentsTapered membersTapered built-up members are welded I-sections with varying web depth. Learn plate sizes, steel grades, web-flange welding, design limits and QC checks.

Endwall columns and endwall rafter of a pre-engineered building highlighted in a 3D model

ComponentsEndwall framingEndwall framing in PEB: post-and-beam vs rigid-frame (expandable) endwalls, endwall columns and rafters, sizes, bracing, design checks and installation.

Bolted end-plate knee connection between a tapered column and rafter in a PEB model

ComponentsEnd-plate connectionsBolted end-plate moment connections in PEB frames: knee, ridge and splice details, plate and bolt sizes, design codes, bolt tightening and site QC.

Column base plate with four anchor bolts, levelling nuts and grout on a concrete footing

ComponentsBase plates & anchor boltsBase plates and anchor bolts for PEB columns: pinned vs fixed bases, plate and rod sizes, F1554 and 4.6/8.8 grades, setting tolerances and grouting.

Concrete footing with cast-in anchor bolts under a PEB column base

ComponentsFoundations interfaceHow PEB foundations interface with the steel frame: column reactions, footing types, frame thrust, anchor setting tolerances, grout and responsibilities.

Secondary framing

Lapped Z purlins spanning between rafters on a pre-engineered building roof

ComponentsPurlinsPurlins in PEB roofs: cold-formed Z and C sections, typical depths, gauges and grades, lapped continuity, bracing by sheeting, design codes and QC.

Horizontal Z girts spanning between frame columns on the side wall of a PEB

ComponentsGirtsWall girts in PEB: cold-formed Z and C girts, by-framed vs flush details, typical sizes and spacing, wind design, sag rods, installation and QC.

Eave strut running along the top of the side wall where roof and wall meet on a PEB

ComponentsEave strutsEave struts in PEB: the cold-formed member at the roof-wall junction that acts as first purlin, top girt and bracing strut. Sizes, design and installation.

Angle flange braces running diagonally from purlins to the inner flange of a PEB rafter

ComponentsFlange bracesFlange braces stabilise the inner flange of PEB rafters and columns. Learn how they work, typical angle sizes, design, spacing, installation and QC.

Roof and wall X-bracing rods in the end bays of a pre-engineered building

ComponentsBracing systemsPEB bracing systems: rod, cable, angle and portal bracing in roof and walls, how they carry longitudinal loads, typical sizes, design and installation.

Sag rods running between purlins at mid-span on a PEB roof

ComponentsSag rods & bridgingSag rods and bridging for PEB purlins and girts: what they do, rod and angle sizes, spacing, wind uplift restraint, installation and quality checks.

Roof & wall cladding

Pre-painted trapezoidal metal roof sheeting fixed to purlins on a PEB roof

ComponentsRoof sheetingPEB roof sheeting guide: trapezoidal metal profiles, thickness, Zn-Al coatings and paint, minimum slopes, fasteners, wind uplift, installation and QC.

Standing seam metal roof panels with raised seams on a large pre-engineered building

ComponentsStanding seam roofsStanding seam roof systems for PEB: concealed clips, seamed laps, low slopes, thermal movement, uplift testing, purlin restraint, installation and QC.

Pre-painted profiled metal wall sheeting fixed to girts on the side wall of a PEB

ComponentsWall sheetingWall sheeting for PEB: profiled metal wall cladding, profiles, thickness and coatings, base and corner details, wind design, installation and QC.

Faced glass wool insulation blanket draped over purlins under metal roof sheeting

ComponentsInsulationRoof and wall insulation for PEB: glass wool, rock wool and foil systems, facings and vapour retarders, R-values, condensation control and installation.

Translucent skylight panels set in rows within a metal roof of a pre-engineered building

ComponentsSkylightsSkylights and translucent panels for PEB roofs and walls: GRP and polycarbonate types, layout, light transmission, fall protection, fixing and QC.

Insulated sandwich panels with steel skins and foam core on the walls of a steel building

ComponentsSandwich panelsInsulated sandwich panels for PEB roofs and walls: PIR, PUR, mineral wool and EPS cores, thickness, U-values, fire, joints, installation and QC.

Interior of a steel building with white profiled liner panels fixed to the inside of the girts and purlins

ComponentsLiner panelsLiner panels for steel buildings: interior sheeting on girts and purlins for hygiene, insulation protection, fire and appearance – profiles and details.

Accessories

Continuous gravity ridge ventilator running along the ridge of a PEB roof

ComponentsRidge ventilatorsRidge ventilators for pre-engineered steel buildings: gravity and turbine types, sizing by free area, materials, weathering details and maintenance.

Fixed-blade wall louvers installed in the sidewall cladding of a pre-engineered steel building

ComponentsWall louversWall louvers for steel buildings: fixed, adjustable and storm-resistant blades, free area and sizing, framing, flashing and maintenance in PEB walls.

Eave gutter and downspouts along the sidewall of a pre-engineered steel building

ComponentsGutters & downspoutsGutters and downspouts for PEB roofs: eave, valley and box gutters, rainfall-based sizing, overflows, materials, detailing and maintenance of rainwater systems.

Rake trim, corner trim and base trim on the cladding of a steel building

ComponentsTrims & flashingsTrims and flashings for PEB cladding: ridge, eave, rake, corner, base and opening trims, closures and sealants, lap rules, materials and installation tips.

Steel building with an eave canopy over loading doors and a parapet fascia above the eave

ComponentsCanopies & fasciasCanopies, fascias and parapets on PEBs: types, framing, sizing rules, wind uplift on overhangs, drainage, cladding details and installation guidance.

Roll-up door and personnel door in framed openings in a steel building endwall

ComponentsDoors & framed openingsDoors and framed openings in PEBs: roll-up, sectional, sliding and personnel doors, opening framing, wind design, sizing guidance and installation tips.

Row of aluminium windows set between girts in the sidewall of a PEB

ComponentsWindowsWindows in pre-engineered steel buildings: window types, framing between girts, wind and water performance ratings, glazing choices, flashing and maintenance.

Steel building with the roof sheeting extended beyond the sidewall and endwall, with soffit panels under the overhang

ComponentsRoof extensionsRoof extensions on steel buildings: gable and eave overhangs, typical projections, cantilever framing, soffit panels, wind uplift and drainage details.

Steel building with roof sheeting curving smoothly down into the wall sheeting at the eave, without a visible gutter

ComponentsCurved eavesCurved eaves on steel buildings: factory-curved panels that join roof and wall in a smooth radius – profiles, radii, support framing, drainage and detailing.

Interior steel-framed partition wall with posts, girts and sheeting dividing a pre-engineered building, with a personnel door

ComponentsPartitionsInterior partitions in steel buildings: framed and sheeted walls, full and partial height, deflection heads, loads, fire-rated separations and openings.

Continuous raised roof monitor along the ridge of a pre-engineered steel building with louvered side openings

ComponentsRoof monitorsRoof monitors for PEB: raised ridge structures for natural ventilation and daylight – framing, sizing by stack effect, rain and bird protection, loads.

Prefabricated roof curb supporting an exhaust fan on a metal roof, with a pipe flashing boot nearby

ComponentsRoof curbs & penetrationsRoof curbs and pipe flashings for metal roofs: how to support fans and HVAC units, frame openings and keep roof penetrations watertight on a PEB.

Interior of a steel building with a suspended grid ceiling hung below the roof purlins

ComponentsSuspended ceilingsSuspended ceilings in steel buildings: grid and tile types, hanging from purlins, collateral load, fire, acoustic and seismic requirements for PEB interiors.

Special structures

Crane runway beam on brackets attached to rigid frame columns, carrying an overhead crane

ComponentsCrane runway beamsCrane runway beams and brackets in PEBs: crane classes, impact and lateral loads, beam and bracket types, deflection limits, fatigue, rails and alignment.

Steel mezzanine floor with columns, beams, deck and handrails inside a pre-engineered building

ComponentsMezzanine floorsMezzanine floors in PEBs: column, beam and joist framing, deck options, live loads by code, vibration and deflection, stairs, handrails and installation.

Built-up jack beam spanning between two rigid frame columns and supporting the rafter of an intermediate frame whose column has been removed

ComponentsJack beamsJack beams in PEBs: how they replace an omitted column to create long sidewall bays or column-free interiors, typical spans, loads and design checks.

Double rigid frames side by side at an expansion joint in a long steel building, with a flexible roof and wall joint cover

ComponentsExpansion jointsExpansion joints in steel buildings: thermal movement, typical joint spacing, single and double frame joints, slotted purlins, cladding and seismic gaps.

Steel building with a blockwork dado wall below metal wall sheeting and precast concrete panels tied to the steel columns

ComponentsMasonry & precast wallsMasonry and precast wall interfaces in PEBs: dado walls, full-height block and tilt-up panels, lateral ties, drift limits, flashings and who supplies what.

Steel equipment platform on a metal roof with grating deck, guardrails and an elevated catwalk leading to it

ComponentsPlatforms & catwalksRoof platforms, catwalks and walkways for steel buildings: equipment support, maintenance access, loads, grating, guardrails and roof penetration details.

Steel staircase with grating treads and handrails leading to a mezzanine, beside a caged fixed ladder

ComponentsStairs, ladders & gratingSteel staircases, ladders, grating and checkered plate for PEBs: geometry rules, guard and handrail heights, ladder fall protection and deck options by code.

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