Mingha Bluff culvert install 3

Menu

Skip to content
  • Home
  • About
    • The Waughpath
    • Design from a Creative Brief
    • Creative print design
    • Terms of service
    • Client Proofing
      • National Weavers Exhibition
  • The work
    • Advertising & Promo
      • Advertising design work
      • Brochure design
      • Poster design
      • T Shirts & other
      • Social Media
      • Writing & Research
    • Brand & identity systems
      • What makes a good logo?
      • Business Naming Service
      • Rename & Rebrand
    • Case studies & awards
      • Bionona brand presentation
    • Corporate communications
    • Illustration
    • Packaging design
    • Photography
      • Classic motorcycle racing photography
        • Burt Munro 2015 Event
      • Composite images
      • Documentary photography
      • Event photography
      • Phil Price Sculpture
      • Photojournalism
      • Travel photography
      • Wildlife photography
    • Video production
    • Web Design
      • Energise an image-heavy website
      • Web design overview
  • ARCHIVE
    • Advertising & Promo
    • Identity
      • Vinevax creative brief & presentation
    • Illustration
    • Packaging design
    • Web Design
  • shop
    • Shop Mens
    • Shop Womens
    • Surface Active wildlife art prints
    • About Surface Active Limited Edition Fine Art Prints
    • Surface Active: A Retrospective of New Zealand Printmakers Chrissie Terpstra & Shaun Waugh (1986–2021)
  • Blog
  • Contact

Mingha Bluff culvert install 3

Affixing reinforcing hoops to the two wing-wall attachment flanges.
Affixing reinforcing hoops to the two wing-wall attachment flanges.
Affixing reinforcing hoops to the two wing-wall attachment flanges.
Affixing reinforcing hoops to the two wing-wall attachment flanges.
Custom sizing of the high-tensile steel threaded re-bar to the 10.5m culvert length.
Custom sizing of the high-tensile steel threaded re-bar to the 10.5m culvert length.
Custom sizing of the high-tensile steel threaded re-bar to the 10.5m culvert length.
Custom sizing of the high-tensile steel threaded re-bar to the 10.5m culvert length.
1829_Prep_wing_walls-8548_2
Preparing the bedding or foundation gravels.
Preparing the bedding or foundation gravels.
Marking out the precise culvert section placements.
Marking out the precise culvert section placements.
1900_Prep_bedding_culvert_1-8603_2
The crane and support truck.
The crane and support truck.
1906_Place_culvert_1-8612_2
First section of culvert being lowered into position.
First section of culvert being lowered into position.
1906_Place_culvert_1-8622_2
Micro-adjustment of culvert position.
Micro-adjustment of culvert position.
1906_Place_culvert_1-8620_2
TruLine Civil works against the clock to place a new 2.5m square culvert beneath main trunk railway on bed of the Otira River, Arthurs Pass.
TruLine Civil works against the clock to place a new 2.5m square culvert beneath main trunk railway on bed of the Otira River, Arthurs Pass.
1922_Place_culvert_2-8623_2
1922_Place_culvert_2-8625_2
Of note is the fact that the crane operating team level and square each of the 1.5m culvert sections at the point of origin to ensure seamless delivery to their planned position on the foundation.
Of note is the fact that the crane operating team level and square each of the 1.5m culvert sections at the point of origin to ensure seamless delivery to their planned position on the foundation.
1922_Place_culvert_2-8638_2
Application of caulking to the compression joint between the two mating concrete sections.
Application of caulking to the compression joint between the two mating concrete sections.
1922_Place_culvert_2-8640_2
Application of caulking.
Application of caulking.
1926_Grout_culvert_2-4028_2
Detail of caulking on the compression joint between the two mating concrete sections.
Detail of caulking on the compression joint between the two mating concrete sections.
Detail of caulking on the compression joint.
Detail of caulking on the compression joint.
1928_Culvert_2_Micro-adj-8644_2
1928_Culvert_2_Micro-adj-8649_2
Insertion of threaded rebar temporarily to enable light compression of the first two mating concrete sections.
Insertion of threaded rebar temporarily to enable light compression of the first two mating concrete sections.
Tightening locking nuts on threaded rebar cinches together the first two mating concrete sections.
Tightening locking nuts on threaded rebar cinches together the first two mating concrete sections.
“Dumpy” laser provides benchmark level for installation.
“Dumpy” laser provides benchmark level for installation.
Rebar lock-nut detail.
Rebar lock-nut detail.
Preparing the lock-nut
Preparing the lock-nut
Careful fine adjustment of the culvert sections, lightly compresses the joint between the two mating concrete sections
Careful fine adjustment of the culvert sections, lightly compresses the joint between the two mating concrete sections
1948_Julio_oversees-8679_2
Craning the third section of box culvert into position.at the northern end of the culvert.
Craning the third section of box culvert into position.at the northern end of the culvert.
1954_Culvert_3_crane-8687_2
1954_Culvert_3_crane-8689_2
1954_Culvert_3_crane-8691_2
1954_Culvert_3_crane-8695_2

6:00–8:00pm, excavation and preparation of the box culvert bedding foundation, placement of the first three sections

Tru-Line Civil Logo. Brands for New Zealand companies, Greymouth, New Zealand.The successful installation of precast box culverts begins with special site preparation for the foundation, typically referred to as bedding, on which the culvert will rest. TruLine Civil Is an experienced Box Culvert installation contractor who understands the importance of bedding the culvert structure properly.

The excavation cut was down to 4.8m below the rails. To alleviate the problem with groundwater below the culvert bedding foundation, a drain was dug down to a half a meter beneath the culvert to drain away the the silted ground water. A settling pond was excavated for the dirty ground water to drain into. From the settling pond the water went to ground.

The water was not allowed to run straight into the Bealey river. With the surface and subsurface water controlled the site preparation conditions for the bedding gravels were dry. During installation provision of dewatering methods were available on the remote Mingha Bluff site in case they needed to be used to ensure the subgrade was dry.

Unsuitable, unstable materials below the plan foundation were removed. After the appropriate excavation was performed the sub grade of river-run gravels was proof compacted.

1906_Place_culvert_1-8612_2

Each of the 7 x 1.5m box culvert sections was craned into position. Negotiating the overhead rail and fragile underground services without interrupting the flow of the installation takes skill and expertise.

Bedding under the box culvert beneath the railway has been designed and formed so as to be able to support the full load of the installed pre-cast box culvert, its contents, and the loading of the overburden and rail traffic above.

Detail of caulking on the compression joint between the two mating concrete sections.

Detail of caulking on the compression joint between the two mating concrete sections.

The thickness of the bedding material was a minimum of 15cm, as required by the project specifications. The bedding comprised of medium granular crushed AP20, it was installed and compacted and precisely levelled to provide uniform support for the full length and width of each box culvert section. This granular base material was sufficiently fine to achieve a level bedding surface.

The final grading for the bedding was achieved with a laser. For the final grading, the granular material was screeded. The final grading allowed an easy crane-lift installation to set the box culvert sections precisely to marked targets on the foundation. The time and care taken ensuring the box culvert bedding preparation was done correctly enabled for very swift and accurate placement and fitting of the 7 x 1.5 m individual culvert segments.

NEXT GALLERY, MINGHA BLUFFS 4

Search

Select language to translate

Client Industry | Clients | Context | Era | Genre | Subject

Magenta Dot Meta

  • Login
  • RSS
  • Comments RSS

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 164 other subscribers

Join the Dot on Facebook

Join the Dot on Facebook
Follow MagentaDot Brands on WordPress.com
Blog at WordPress.com.
  • Follow Following
    • MagentaDot Brands
    • Join 85 other followers
    • Already have a WordPress.com account? Log in now.
    • MagentaDot Brands
    • Customize
    • Follow Following
    • Sign up
    • Log in
    • Copy shortlink
    • Report this content
    • View post in Reader
    • Manage subscriptions
    • Collapse this bar
 

Loading Comments...