PRE-ENGINEERED BUILDING SYSTEMS
PRE-ENGINEERED BUILDING SYSTEMS
Concrete Concrete Block Poured In Place Precast Concrete
Concrete Block Wall Intersections Reinforced Walls 1. lap splice bars 40 bar diameters or 24" 2. turn every other bar in oposite direction 3. horizontal or bond beam reinforcement 4. vertical reinforcement in fully grouted cells Unreinforced Bearing Walls 1. 1 1/2" x 1/4" x 30" metal strap anchor w/ ends bent up 2" space vertically @ 4' o.c. maxium 2. Metal lath to support grout in cell above 3. Control joint Bearing Walls and Nonbearing Walls 1. Metal lath @ 16" o.c. vertically 2. Control joint - rake and caulk 3. Nonbearing wall
Bond Patterns running bond stack bond coursed ashlar ribbed block grooved block concrete brick stucco over block CMU concrete brick sash bullnose corner jamb lintel pilaster scored fluted ribbed split face Width 4" 6" 8" most popular 10" 12" Depth 4" 8" most popular Length 8" 12" 16" most popular 24" Poured in Place Concrete: Concrete Columns: round columns 10" min diameter vertical reinforcement min. 1 % crossection max. 8 % 5 # 4 bars min. square columns 8" min. vertical reinforcement min. 1 % crossection max. 4 % 4 # 4 bars min. column ties 1/4" diameter min. spacing to be not more than 48 x tie diameter or 16 x vertical bar diameter nor more than the dimension of the column section Concrete Walls: Formwork: Precast Concrete Walls: Connections Tilt-Up Concrete Construction Lift-Slab Pre-Stressed Post-Tensioned Precast Concrete Wall Panels Solid 3 1/2" to 10" thick up to 24' high Composite rigid foam insulation 5 1/2" to 12" thick up to 24' high Ribbed 12" to 24" thick up to 48' high T or TT panels GFRC instead of conventional reinforced concrete glass fiber reinforced concrete GFRC can be used to produce much thinner and lighter veneer panels Precast Columns Size Total Floor and Roof Area supported 10" x 10" 2,000 sq.ft. 12" x 12" 2,750 sq.ft 16" x 16" 4,500 sq.ft Nonstructural Wall Units Bottom Bearing wall sits on top of structural frame (floor slab, beam, etc.) 1" clear between structure and wall dowel grouted in place or clip angle bolted or welded to anchor plate and has a tieback connection on the top clip angles and bolts shims and slotted holes may be used for adjustment Top hung unit wall hangs from structural frame and is tied back on bottom Joints Vertical Joint 1/2" min sealant backer rod vertical off-set Horizontal Joint 1/2" min sealant backer rod Open Joint allows ventilation Closed Joint sealed joint Loadbearing Wall Units Corbels are cast into wall and columns to provide bearing for floors and roofs
General Cast-in-Place Costs Substructure $210 /cubic yard (40% Material 60% Labor) Superstructure $390 /cubic yard (30% Material 70% Labor) Finishes cast shapes and textures $ 1.60 - $6.00 / s.f. abrasive treatment $ 1.00 - $3.20 / s.f. (bush hammering) chemical retardation $ 0.50 / s.f. (exposed aggregate) Footings: column spread footing $ 95.50 /each 3' x 3' x 1' excavation backfill reinforcing 3000 psi concrete wall-spread (strip) footing $ 28.50 /lf stem wall not included concrete stem walls $ 33.00 /lf Grade Beam $ 46.25 /lf 28" deep 24" wide 15' span 8K/LF load Caisson $ 1,740 / each 2' diameter 50' long 3000 psi Pile Cap $ 300 / each 6.5' x 3.5' x 1'-8" 3000 psi 45 K load Cast in Place (CIP) Piles $ 630 / each 50 K end-bearing 12" to 14" steel shell 25' long Precast Concrete $ 780 / each 50 K end-bearing 10" square 50' long Steel Pipe 50 K end-bearing $ 1,560 / each 12" diameter 50' long Steel H Piles 100 K end-bearing $ 1,160 /each 50' long Steel-step tapered $ 630 / each 50 K end-bearing 50' long Treated wood piles (3) $ 1,230 / each group 50 K end-bearing 25' long Pressure-injected footing $ 1,300 / each 50 K end-bearing 50' long 4" 1-way Slab $ 2 - $2.50 /sq.ft. 2-way slab 15' bays, 40 psf $ 6.50 / sq.ft. 25' bays 125 psf $ 8.30 / sq.ft. 25% M & 75% L Slab w/ drop panels 15' bays, 40 psf $ 7.00 / sq.ft 35' bays 125 psf $ 10.50 /sq.ft 2-way waffle slab 20' bays, 40 psf $ 9.10 / sq.ft. 40' bays, 125 psf $ 11.35 / sq.ft. Precast Planks $ 7.20 / sq.ft 35% variations high/low 85% M, 15% L Precast I-beam $ 65 / lf 90% M, 10% L 20% variation Precast TT $ 4.80 / sq.ft 2' deep 35' - 100' span 90% M, 10% L 10% variation Concrete Columns $ 100 / cy 65% M, 35% L 5% variation Concrete Walls $ 11 / sq.ft. 6" reinforced wall 66% M, 33% L 25% variation Concrete Drives Concrete Walks Concrete Patios $ 1.50 - $2.00 / sq.ft. 1/2" score joints at 5' expan. Joints 20'-30' 4" concrete slab 60% M, 40% L add: each inch 15% reinforcement 5 - 10% special finishes 100% 4" base $0.35 - 0.55 / sq.ft. Curb $ 7.35 / lf Curb & gutter $ 12 / lf add for rolled + 25% Parking Bumpers $ 40 / each 65% M, 35% L Terrazzo 45% M, 55% L $ 6.00 - $12.50 / sq.ft Terrazzo Tiles 45% M, 55% L $ 12.50 - 20.50 / sq.ft
Tilt-Up Concrete Construction In tilt-up concrete construction concrete wall panels are cast on-site in a horizontal position. The casting platform is usually the concrete ground slab for the building under construction, although earth, plywood, and steel molds can also be used. Depending on the wall finish desired and the presence of any projections, such as corbels or pilasters, the wall panels may be cast with their outside face up or down. The wall panels must be designed to withstand the stresses of being lifted and moved which can exceed the in-place loads. Details: 5 1/2"" to 11 1/2" thick 1/2" min. joints grout packed extend horizontal wall reinforcement of precast tilt-up wall into cast-in-place column precast wall to precast column connect with weldplates wall - weldplate column - column angle drypack cavity with grout
Masonry Structures: =============== hardened through heat brick structural clay tile terra cotta hardened through chemical action concrete block concrete brick gypsum block Stone Masonry stone masonry over backup wall reinforced poured concrete CMU wall double faced stone wall Bonds: random rubble coursed rubble coursed ashlar Stone Veneer Stone classification according to geological origin igneous cooled molten rock (granite) sedimentary deposited by glacial action (imestone) metamorphic formed under intense pressure (marble) and heat (slate) rubble dimension flagstone crushed rock Type of Stonework rubble rough, uncut stonework ashlar cut or split stone masonry pattern trim sut stone for copings, cornices, sills and lintels
Brick 2500 psi Type SW (severe weather) for use below grade and where exposed to freezing 2200 psi Type MW (medium weather) for walls above grade 1250 psi Type NW (no weather) for interior use Unit Type standard modular 4 2 2/3 8 3c = 8 engineer economy double roman norman norwegian utility triple SCR brick 6" norwegian 6" jumbo 8" jumbo 8" square Mortar 2500 psi Type M for basements, foundations and reinforced masonry 1800 psi Type S for exterior walls and interior loadbearing walls 750 psi Type N for interior walls and solid masonry veneer mortar joints may vary from 1/4" to 1/2"
Adobe formwork lath brick mold
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