1 scope
This standard is mainly used in industrial
and civil construction bricks outside the outer mold, die, all in-situ shear
wall structure installation and removal of the template.
2 construction preparation
2.1 materials and equipment:
2.1.1 supporting formwork: mold, die,
including bolts and pads, wall bolts and casing, body bars, ladders and
platforms, and so on.
2.1.2 release agent: methyl silicone and
water based release agent.
2.1.3 the General should have a hammer, AX,
drill drill, monkey wrench, hand saw. Spirit level, wire pendant, crowbar,
lifting and rigging etc.
2.2 operating conditions:
2.2.1 the design of engineering structure
template design to ensure strength, rigidity and stability.
2.2.2 floor wall elasticity and good lines,
door hole location and elevation lines.
2.2.3 finished wall reinforcement,
electricity boxes, embedded, embedded finished jambs, check the thickness
should meet the requirements, go through acceptance of concealed work
procedures.
Wanting to run pulp 2.2.4 in order to
prevent large template, before you install the template better mortar screed,
screed cannot extend into the walls.
2.2.5 brick internal model structure on the
installation template, to clean ash composite columns on a wall at the tongue,
cast in place structures for hanging out the wall shelf template action.
2.2.6 installation template before the
template should be surface cleaned, brush barrier (not allowed in a template in
place brush release agent to prevent pollution of interface between
reinforcement and concrete, painted in uniform shall not be missed area).
3 operational processes
3.1 internal model structure installed
templates:
3.1.1 technological process:
Preparations → templates → Setup → wall panel,
Yasumasa catchy → template → fixed templates, an anti-pre-clearance
3.1.2 vertical wall installation order
after the first wall, a water plus templates using cranes hanging in order to
install in place, position line adjust the template with a crowbar by wall,
symmetrical adjustment template for a pair of anchor bolts or tilt-rod bolts.
Measuring vertical elevation correction with the supporting plate, squareness,
level, levels of templates meet the design requirements, tighten bolts at once.
3.1.3 install siding, with baskets bolts or
clamps to the upper and lower ends of Rachel fixed.
3.1.4 checked before clamping bars,
utilities embedded pipe fittings, door hole template, wall bushing is missing,
location is accurate, solid installation, weakening sections, clean template
before, against a wall of debris.
3.1.5 installed templates, after correction
of vertical, wall bolt to lock the two template.
3.1.6 the pros and cons template after
installation, check the wall and die, templates and floor stairwell wall
clearances must be carefully to prevent leakage, the phenomenon of dislocation.
Check each wall and catchy is straight, two with fasteners or bolts templates
easy to fix. Finished testing template project, and pouring concrete.
3.2 brick internal model structure
installed templates:
3.2.1 the process flow:
Exterior brickwork →
installation and against large templates → Setup → die
pre-screening
3.2.3 installed templates, pros and cons,
and die within the same.
3.2.4 concrete exterior wall intersection
angle mode, to prevent a poured wall concrete, composite columns outside the
brick walls of bulging should be brick walls with vertical 5cm plank and
transverse reinforcement, through wall of steel in Rachel, increases wall
rigidity.
3.3 all in-situ structure installed
templates:
3.3.1 processes:
Preparations → → foreign shelf
within an inner vertical walls, wall templates → Templates → plug
templates →
An outer wall inside templates → clamping
bars before an exterior side, hidden check → template →
pre-screening
3.3.2 in the external wall of the lower the
concrete strength of not less than 7.5MPa, use an outer wall hanging bolt holes
under mounted stainless steel triangular platform.
3.3.3 Installing wall, the inner vertical
walls within the templates (installation method of internal model structure and
external installation).
3.3.4 in interior wall template template
installation activities of the outer ends of the plug, it can be made with
wooden or iron according to wall thickness, the template closely to prevent
when poured wall concrete, concrete flow from the outside end of the site.
3.3.5 installed inside the wall template,
press line template in place on the floor, and then install the jambs the
template.
3.3.6 template before steel, utilities and
other embedded pipe hidden test.
3.3.7 Installing exterior side templates,
templates in a metal triangle on the platform, the template is in place, worn
bolt correct, note that templates of construction joints joints must be tight,
solid and reliable, and prevent dislocation and the leakage of mixture.
3.4 removing templates
3.4.l in at room temperature conditions
Xia, wall body concrete strength must up 1MPa, winter period construction
outside Board within die structure, and outside brick within die structure,
wall body concrete strength up 4MPa only associate split die, full now poured
structure outside wall concrete strength in 7.5MPa, within wall concrete
strength in 5MPa only associate split die, split die Shi should to with
conditions conservation try block compressive strength for associate.
3.4.2 removing templates and templates are
installed in the order in reverse order, first remove split wall after Wall
template template, first remove wall bolts, and then release the bolt, making
the template back and wall opening. If the template does not leave with
concrete wall surface adsorption or binding used crowbars to move the template
out, may not be catchy to pry the wall template, or use a sledgehammer
template. Should ensure that the removal does not shake when concrete walls,
especially split Windows cannot use a sledgehammer when a hole template
template.
3.4.3 remove all in-situ structure
templates, external walls should be outside of the template, and then
dismantled inside the template.
3.4.4 clear template clutter on the
platform, check whether the template hook Pocket trip places, adjusting the
Tower arm above the template to be removed and hoisted out the template.
3.4.5 template when hanging to the
location, you must stand, at a steady angle to 75 ° ~80 °, surface cleaning,
coating release agent to prevent adhesion of the mortar.
3.4.6 template should conduct regular
inspection and maintenance to ensure quality.
4 quality criteria
4.1 project: template and bracket must have
sufficient strength, rigidity and stability. Area of the supporting part of the
bracket should be adequately supported.
4.2 basic item: out of large templates and
template and die at the seams to be tight, no leakage. Template seams, seam the
maximum width should not exceed the specified template contact surfaces should be
cleaned with concrete. Release agent brush evenly.
4.3 allowable deviation is shown in table
4-4.
Cast templates allow deviation for shear
wall structure in table 4-4
Tolerance (mm)
Multi-mode high mode
Axis displacement 5 3 feet of wall, check
Elevation ± 5 ± 5 level or cable and check
Wall section dimensions ± 2 ± 2 standard
checks
2m 3 3 vertical layer of care with Board
examination
Two adjacent surface height difference of 2
2 with a ruler and the ruler check
Surface roughness 2 2 2m m on foot and
wedged feeler Gage check
Displacement of center line of embedded
steel plates 3 3
Displacement of embedded pipe, set aside
the hole Center lines of 3 3
Center line 2 2
Exposed length +10 0 +10 0
Linear displacement of the Centre of 10 10
Section size +10 0 +10 0
5 finished product protection
5.1 equipment parts keep the template
itself is clean and complete, lifting to prevent collision wall, piling up
reasonable, keeping no deformation of the plate surface. Winter construction of
insulation on the back of the template should be kept intact.
5.2 lifting template in place to smooth,
accurate, and shall not touch hit the floor and he had finished construction
parts, not hanging bar. Pry the root when you adjust the template, be careful
of templates the following screed of mortar.
5.3 when the template is removed according
to the procedures, prohibit the use of the hammer struck to prevent concrete
cracks on walls, Windows and doors at the entrance.
5.4 templates and wall surface bond,
prohibit the use of tower cranes Crane die, prevent wall cracking.
5.5 concrete construction in winter to
prevent freezing, when the concrete reaches standard rear stripping stripping
strength, otherwise it will affect the quality of concrete.
6 quality problems to be noticed
6.1 super thick wall: wall wire errors is
too large, template in position adjustments are not serious, wall bolts do not
all put together, tighten.
6.2 wall and catchy too large: die head
clamp without clamping according to design requirements.
6.3 concrete wall surface adhesion: because
of the bad template cleanup, uneven coating release agent, removal of mould
caused by premature.
6.4 die gap is too large to run pulp with a
big template: a template is assembled gap is too large, connecting fixed
measures are not foolproof, should step up its inspection and deal with.
6.5 die wall depth: mold die with Recessed
floor connections too much or not secure. Die methods should be improved.
6.6 door hole concrete; Assembly and door
hole template and the template is fixed firmly. To portal template must be
carefully designed to ensure size, ease of Assembly and disassembly.
6.7 control template upper elevations.
7 quality records
This standard shall meet the following
quality records:
7.1 templates section pre inspection
records.
7.2 template project quality assessment
information.
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