(1) road works:
1) Road engineering construction: ancillary structure → subgrade filling or excavation → roadbed acceptance → subbase → base → prime coat → lower seal coat → bottom layer → middle layer → (gunned coat) → surface layer.
2) Asphalt concrete pavement construction: asphalt concrete paving → initial pressure → re-pressure → final pressure.
3) Vibrating sequence of vibrators for cement concrete pavement construction: plug-in vibrator → flat vibrator → vibrating beam (heavy) → vibrating beam (light) → seamless steel tube roller for slurry lifting.
(2) Bridge engineering:
1) Assembled bridge construction: pile foundation construction → cap construction → pier column construction → capping beam construction → bearing installation → precast member hoisting → cast-in-place slab joint → concrete leveling layer → bridge deck waterproof layer construction → concrete or asphalt concrete bridge deck paving → installation of expansion joints → installation of planking and railings → lighting.
2) Formwork construction of cast-in-place prestressed reinforced concrete box girder: scaffolding foundation treatment, acceptance (preloading)-formwork scaffolding construction → formwork (bottom formwork first, rear formwork)-preloading (foundation preloading is not required)-binding bottom slab, longitudinal and cross beam reinforcement → installing prestressed duct → installing internal formwork → binding top slab reinforcement → pouring concrete → passing through prestressed steel beams → removing side formwork, internal formwork → prestressed tensioning → duct.
3) Cantilever beam construction: construction of 0# block → installation of hanging basket → installation of bottom formwork → preloading → installation of side formwork → binding of steel bars → installation of prestressed channel, installation of prestressed steel beam and installation of connector (head beam) → installation of internal formwork and end formwork → pouring concrete → removal of internal formwork → prestressed tensioning → external formwork → hanging basket to the next section.
4) Box culvert jacking process: field investigation → engineering dewatering → excavation of working pit → back fabrication → skateboard fabrication → laying lubricating isolation layer → box culvert fabrication → jacking equipment installation → reinforcement of existing lines → box culvert jacking test → soil jacking → monitoring and measurement → box body positioning → removal of reinforcement facilities → removal of back and jacking equipment → restoration of working pit.
(3) Shallow excavation:
1) The surface anchor is a pre-reinforcement measure for the surface, which is suitable for shallow excavation, entry into the working well and soft and broken rock mass. The ground anchor (pipe) is arranged in a rectangular or quincunx shape, and its procedures are as follows: drilling → blowing drilling → grouting with grouting pipe → vertically inserting the anchor rod body → fixing the rod body at the orifice.
2) Pipe shed construction process: measuring hole position → drilling rig in place → horizontal drilling → steel pipe pressing → grouting (driving into and around the steel pipe) → plugging → excavation.
(4) Water treatment project:
1) Common water supply treatment process: raw water → coagulation sedimentation or clarification → filtration → disinfection.
2) Construction process of integral cast-in-place reinforced concrete tank structure: measurement and positioning → earthwork excavation and foundation treatment → cushion construction → waterproof layer construction → bottom plate pouring → tank wall and tank top support column pouring → tank top pouring → function test.
3) Process flow of cast-in-place reinforced concrete pool with unit combination: earthwork excavation and foundation treatment → pouring of central column → construction of impervious layer at the bottom of the pool → concrete cushion at the bottom of the pool → construction of waterproof layer in the pool → pouring of pool wall in blocks → pouring of bottom plate in blocks → sealing of bottom plate → construction of waterproof layer at the pool wall → functional test.
4) Test flow of full pool: test preparation → pool water injection → pool water level observation → evaporation measurement → sorting out test conclusions.
(5) Pipeline construction:
1) Rainwater and sewage concrete pipes: trench excavation → foundation construction → pipeline laying → pipeline installation → pipe joint (encapsulated with concrete) → inspection well construction → plastering → closed water test → filling.
2) Gas pipeline construction process: trench excavation → pipeline laying → pipeline installation and welding → welding quality inspection → pipeline purging → strength test → joint anticorrosion → backfill soil to 0.5m→ above the top of the pipe → leak test → laying polyethylene warning belt with printed words → earthwork backfilling to the design elevation.
3) Steel pipe welding: butt welding gap → nozzle welding → appearance inspection → ultrasonic flaw detection → radiographic film (ultrasonic flaw detection and radiographic film are used for sampling inspection or welding joint in casing where strength test cannot be carried out) → ball blowing and wire sweeping → strength test → nozzle anticorrosion → backfill soil → leakage test.
(6) The basic process of construction cost management:
Cost forecast → management decision → management plan → process control → cost accounting → analysis and evaluation.
The above is Bian Xiao's "Examination Contents for Secondary Constructor of Municipal Engineering". If you want to know other relevant information about the test sites required for the second-level constructor exam. Pay attention to Bian Xiao's timely push.