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Top coupler and bearing Plate to posttension bar Beam Column Bar through duct threaded to couplers Hole for grout Mortar bed Beam Figure 6.48 Precast concrete frame to frame joint. Loops cast in edge beam Tie bar between floor slabs Precast reinforced concrete column Tie bar in slot in floor slab Peripheral tie bar Precast concrete beam Loop cast in edge beam Tie bar Slot in floor slab Concrete topping Precast concrete floor slab Steel box cast in beam bears on angle in column Column tie bar through column cast into topping End of precast concrete tie slab notched for column Figure 6.49 Precast reinforced concrete structural frame.
Structural Concrete Frames 405 The precast, hollow floor units bear on the rebate in beams. Slots cast in the floor units accommodate steel tie bars, which are hooked over peripheral tie bars. The tie bars are wired to loops, which are cast into beams. Structural concrete topping is spread, compacted and levelled over the floor slabs and into the space between the ends of slabs and beams to form an in situ reinforced concrete floor. Precast floor units bear either directly on concrete beams or, more usually, on supporting nibs cast for the purpose. Ends of floor units are tied to beams through protruding studs or in situ cast reinforcement so that the floor units serve to transfer wind pressure back to an in situ cast service and access core. The precast reinforced concrete wall frames, illustrated in Figure 6.50, that combine four columns with a beam were used with drop-in beams as the structural wall frame system Bronze strap cast into unit bolted to dowel Stiffening ribs Horizontal support nibs bear on beams Web of unit Lightweight concrete blocks Four-column precast concrete wall frame Floor slab bears on toe of beam secured with dowels Window unit Drop-in beam Storey height units Drop-in beam 300 × 300 mm columns at 1.8 m centres Drop-in beam bolted to nibs on frame Sockets for dowels Screed Wall frames in position Expanded polystyrene Floor units with concrete topping Boot section beam Figure 6.50 Precast reinforced concrete wall frames.
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BARRY’S ADVANCED CONSTRUCTION OF
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This edition first published 2014 T
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vi Contents 6 Structural Concrete F
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Acknowledgements Over the years our
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1 Introduction In Barry’s Introdu
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Introduction 3 Photograph 1.1 Frame
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Introduction 5 (2) Positional toler
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Introduction 7 some of the factors
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Introduction 9 Photograph 1.2 Artif
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Introduction 11 on legislation, oth
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Introduction 13 allow for innovatio
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2 Scaffolding, Façade Retention an
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Scaffolding, Façade Retention and
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3 Ground Stability, Foundations and
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Ground Stability, Foundations and S
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Where the ground is susceptible to
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Heavy pad reinforcement Reinforceme
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Photograph 3.3 Driven precast concr
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(a) (b) Photograph 3.6 (a) A drop a
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Working direction Hopper and cellul
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Infill concrete packing applies pre
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Reinforced structural concrete base
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4 Single-Storey Frames, Shells and
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Single-Storey Frames, Shells and Li
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Portal rafter Plate welded to rafte
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Zed purlins Washer plate bolted to
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Sheeting rails for cladding Steel r
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Photograph 4.12 Lattice column to b
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Side lap of sheeting Sheeting screw
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Outline of straight line limited hy
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5 Structural Steel Frames Structura
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Structural Steel Frames 275 penetra
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Structural Steel Frames 277 calcula
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Structural Steel Frames 279 The lim
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Structural Steel Frames 281 420.5-
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Structural Steel Frames 283 no stro
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Structural Steel Frames 285 Channel
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One-way span floor and roof slabs R
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Structural Steel Frames 289 A disad
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Structural Steel Frames 291 Rib bea
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Structural Steel Frames 293 Timber
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Structural Steel Frames 295 Horizon
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Structural Steel Frames 297 Concret
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Beam End plate welded to beam Colum
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Structural Steel Frames 301 Cap pla
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Structural Steel Frames 303 Bearing
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Structural Steel Frames 305 Bolt fa
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Structural Steel Frames 307 Electro
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Structural Steel Frames 309 Types o
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Structural Steel Frames 311 Weld fa
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Structural Steel Frames 313 beam en
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Structural Steel Frames 315 Column
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A timber profile is cut to the same
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Structural Steel Frames 319 Square
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Structural Steel Frames 321 for a s
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Structural Steel Frames 323 Photogr
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Structural Steel Frames 327 Column
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Structural Steel Frames 329 Strengt
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Structural Steel Frames 331 Figure
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Structural Steel Frames 333 Floor b
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Structural Steel Frames 335 50 or 7
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Structural Steel Frames 339 rating,
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Structural Steel Frames 341 The adv
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Structural Steel Frames 343 Shear s
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Structural Concrete Frames 345 ❏
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Structural Concrete Frames 347 Work
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Structural Concrete Frames 349 6.2
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Structural Concrete Frames 351 is o
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Cladding and Curtain Wall Construct
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Roof support Roof or eaves level La
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Prefabrication and Off-Site Product
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The finished hospital looks no diff
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Lifts and Escalators 515 ❏ ❏
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Lifts and Escalators 517 will be bu
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Lifts and Escalators 519 hydraulic
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Lifts and Escalators 521 ❏ ❏
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Lifts and Escalators 523 FFL Lift c
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Lifts and Escalators 525 Climbing f
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Lifts and Escalators 527 Above 30 m
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Lifts and Escalators 529 Photograph
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Fit Out and Second Fix 531 cabinets
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Fit Out and Second Fix 533 ❏ ❏
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Fit Out and Second Fix 535 Four-way
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Fit Out and Second Fix 537 Services
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Fit Out and Second Fix 539 Wire han
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Fit Out and Second Fix 541 tiles ar
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Fit Out and Second Fix 543 Metal st
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Fit Out and Second Fix 545 Multiple
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11 Building Obsolescence and Revita
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Building Obsolescence and Revitalis
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Appendix B: Additional References C
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Index Access from heights, 42 Acces
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Index 567 Innovation, 505 Inspectio
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Index 569 Suspended frameless glazi
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