| Preliminary works including site layout, level benchmarking, site fencing with triplex plywood and tarpaulin, interior drywall protection, permit and licensing management, supervision by qualified site engineer, material storage facility, site cleaning and waste removal, utility contracting (water, electricity, lighting, telephone, drainage, ecological latrines) |
| Foundation work - excavations with maximum tolerance 15cm for concrete elements and 5cm for masonry, aggregate gravel maximum 3/4" or 1.5", granulometric analysis submission, concrete cover minimums (zapatas 4cm, contra trabes 2cm, columns 3cm), rebar laps of 40 diameters, hook anchors, enrase walls with solid concrete block 100 kg/cm2 |
| Concrete testing - laboratory proof cylinders at 3, 7, 14 and 28 days per casting stage of 7m3 (minimum 4 cylinders if less than 7m3), accelerant use for zapatas and contra trabes to reach design resistance at 14 days |
| Backfill compaction in 15cm layers using vibro compactor and roller at 90% modified Proctor density, specialty lab testing if not mechanical, slump verification 8-12cm |
| Stone foundation work - type cuartón stone well bonded with commercial-sand mortar 1:4 (or cement-sand 1:5 in high water table areas), crowned with stone or f'c=150 kg/cm2 concrete 5cm thick |
| Structural work - formwork with 16mm pine plywood maximum 5 uses, exposed finish, wooden chamfers, wooden posts, braces, drags and wedges, slabs with reinforcement hooks, slipform protection with wooden walkway, concrete curing with kraft paper 7 days |
| Structural concrete - f'c and aggregate size per project specifications, slump 8-12cm, laboratory testing at 3, 7, 14, 28 days per 7m3 casting stage, descimbering authorization upon achieving minimum 75% design resistance |
| Metallic structure supply and installation - alignment and plumb verification, complete bolting with flat and pressure washers, penetration testing or radiographs of welds, 5-year structure warranty, anticorrosive primer and first coat of paint at ground level, torquemeter adjustment for bolts |