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Free Practice Questions for CONOCER Albañilería en Obra Negra

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Key Facts: CONOCER Albañilería en Obra Negra Exam

Nivel 2

Competency Level

CONOCER RENEC

4 Elements

Supplies, Vertical, Horizontal, Finishes

EC0326 standard

6.5 hours

Estimated Evaluation Time

EC0326 standard

4 years

Certificate Validity

EC0326 standard

2 cm²

Max Void or Protrusion

EC0326 standard

24/05/2013

DOF Publication Date

EC0326 standard

CONOCER EC0326 (Realizar trabajos de albañilería en obra negra de edificación) is Mexico's Nivel 2 competency standard for masons. Accredited certifiers evaluate four elements, from preparing supplies to building vertical and horizontal elements and placing firmes and plasters, in about 6.5 hours and issue a judgment of Competente or Todavía no competente; the certificate is valid for 4 years. This independent OpenExamPrep bank offers English-language practice MCQs on the EC0326 criteria.

Sample CONOCER Albañilería en Obra Negra Practice Questions

Try these sample questions to review concepts for the CONOCER Albañilería en Obra Negra exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 71+ question experience with AI tutoring.

1How many elements does CONOCER standard EC0326 have, and what are they?
A.Three: prepare supplies and mixes, build walls and castillos, and apply the plaster and floor finishes
B.Four: prepare supplies, build vertical elements, build horizontal elements, place firmes and aplanados
C.Four: read plans, excavate foundations, pour the structure, and clean the finished site
D.Five: layout, reinforcement, formwork, concrete placement, and wall plastering
Explanation: EC0326 (Realizar trabajos de albañilería en obra negra de edificación) has four elements: E1104 Habilitar los insumos para la construcción de elementos verticales y horizontales, E1105 Construir elementos verticales de la edificación, E1106 Construir elementos horizontales de la edificación, and E1107 Colocar firmes y aplanados.
2Which two official safety standards does EC0326 require the mason to comply with throughout the work?
A.NOM-001-SEDE-2012 and NOM-029-STPS-2011
B.NOM-006-STPS-2023 and NOM-017-STPS-2008
C.NOM-031-STPS-2011 and NOM-009-STPS-2011
D.NOM-018-STPS-2015 and NOM-026-STPS-2008
Explanation: EC0326 Element 1 requires complying with safety measures during all activities according to NOM-031-STPS-2011 (construction: safety and health conditions at work) and NOM-009-STPS-2011 (safety conditions for work at height).
3Which steps does EC0326 list for preparing (habilitar) reinforcing steel?
A.Measuring and cutting the bars, then coating them with anticorrosive primer before bending them to shape
B.Heating the bars with a torch so they bend easily, then cutting them to length
C.Cutting the bars to length and welding every intersection of bars and stirrups
D.Measuring bars and stirrups, wire-brushing the bars, and cutting and bending them per the work order
Explanation: Element 1 lists: measuring the lengths of bars (varillas) and stirrups (estribos), cleaning the bars with a wire brush, cutting bars and stirrups per the work order or sketch, and bending them as specified.
4What does EC0326 require when preparing formwork (cimbra) boards?
A.Cutting the boards per the work order or sketch and coating the contact faces with release agent
B.Soaking the boards in diesel overnight so the concrete does not stick to them
C.Using the boards uncut and trimming the excess from the element after pouring
D.Cutting the boards per the sketch and painting the contact faces with enamel so the concrete releases cleanly
Explanation: Element 1 requires cutting the boards per the work order or sketch and placing release agent on the contact faces. The glossary defines desmoldante as a chemical solution applied to formwork wood to keep the concrete from sticking to it.
5How does EC0326 describe making a cement–sand mix by hand?
A.Mixing sand and cement directly on the ground and adding all the water first
B.Using the artesa, adding sand and cement per the work order, then potable water until workable
C.Using the artesa and adding as much water as needed so the mix spreads easily, without measuring proportions
D.Using the artesa and mixing the cement with gravel only, per the work order
Explanation: Element 1 requires using the artesa (a container that holds the mix or concrete) to make the mix, placing sand and cement in the proportions of the work order, and adding potable water in the stated proportion until it is manejable (workable).
6In what order does EC0326 describe loading a portable concrete mixer (trompo)?
A.Start it, add cement, gravel, and sand dry per the work order, add all the water, and mix until it looks uniform
B.Start it, add gravel and water first, then cement and sand per the work order, and mix for exactly 15 minutes
C.Start it, wet the drum, add sand, gravel, and cement per the work order, add water, and mix for the manufacturer's time
D.Load all the materials dry per the work order, run the mixer for about an hour, then add the water just before emptying it
Explanation: Element 1 lists: putting the equipment into operation, adding water until the entire interior of the trompo is wet, adding sand, gravel, and cement per the proportions of the work order, adding water per the proportions, operating the trompo for the time the manufacturer sets, and emptying the concrete into the indicated element.
7What must the list of supplies (listado de insumos) prepared under EC0326 specify?
A.The unit price of cement, sand, and gravel, and the total cost of the materials needed for the element
B.The type and quantity of materials, tools, work equipment, and PPE the element and area require
C.The names and trades of the workers assigned to the element and their daily schedule
D.The client's payment schedule and the delivery dates agreed with the materials supplier
Explanation: The product "listado de insumos" must be consistent with the quantity and characteristics required by the element to build and the work area, and must specify the type and quantity of material, tools, work equipment, and PPE.
8According to EC0326, how must sandy materials or stone prepared for a vertical element be kept at the construction site?
A.Delivered to the street in front of the site and used as needed, uncovered
B.Stacked by type where the element will be built, and covered with plastic or tarps
C.Piled against the fresh wall so it is close at hand for the next courses
D.Kept soaked in water until it is used, so that the sand does not absorb water from the mix
Explanation: The product "material habilitado" must have the characteristics in the sketch, be located where the element will be built, be stacked according to its characteristics and construction practice, and be protected with plastic or tarps if it is sandy material or stone.
9What does EC0326's glossary mean by "habilitar"?
A.Getting the permits and licenses needed before construction starts
B.Preparing materials or places to build elements: cutting, measuring, bending, cleaning
C.Inspecting a finished element and approving it against the specifications in the sketch or work order
D.Applying the final finish coat to walls and floors after the structure is done
Explanation: The glossary defines habilitar as preparing materials or places to carry out the construction of elements: cutting, measuring, bending, cleaning, and similar tasks.
10How does EC0326's glossary define estribos (stirrups)?
A.Wooden stakes driven at the corners to hold the layout strings
B.Bars bent into shapes per the specifications that hold the assembled bars in place
C.Steel plates welded to the beams to connect them to the columns
D.Strings stretched between the guides at each end to align and level every course of the wall
Explanation: The glossary defines estribos as bars bent into various geometric shapes according to the specifications, whose function is to keep the assembled bars in that form.

About the CONOCER Albañilería en Obra Negra Exam

Independent CONOCER EC0326 practice questions by OpenExamPrep. EC0326 (Realizar trabajos de albañilería en obra negra de edificación) is the CONOCER competency standard for masons who build the rough structure of buildings. The standard is published in Spanish, and certification follows a competency evaluation of performances, products, knowledge, and attitudes by an accredited certifier, not an official multiple-choice test. This bank is an English-language MCQ study adaptation covering rebar and formwork preparation, mortar and concrete batching, layout and leveling, castillos and walls, waterproofing, stone foundations, slabs with beams, plasters, and firmes; it is not an official translation and does not replace the evaluation.

Exam sponsor: CONOCER (Consejo Nacional de Normalización y Certificación de Competencias Laborales). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

One standard with four elements, developed by the committee of the Cámara Mexicana de la Industria de la Construcción with the ICIC and published in the DOF on 24 May 2013: Elemento 1 (Habilitar los insumos para la construcción de elementos verticales y horizontales), Elemento 2 (Construir elementos verticales de la edificación), Elemento 3 (Construir elementos horizontales de la edificación), and Elemento 4 (Colocar firmes y aplanados). Products include the list of supplies, prepared material, a castillo, a wall, support guides, a slab with beam, common and rustic plasters, and a firme. The evaluation is estimated at 30 minutes of desk work and 6 hours in the field.

Time Limit

About 6.5 hours estimated (30 minutes desk work, 6 hours field)

Passing Score

Competency judgment: Competente or Todavía no competente

Exam / Certification Fees

Varies by accredited certifier (not published by CONOCER)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

Not published

Elemento 1: Habilitar los insumos para la construcción de elementos verticales y horizontales

Following NOM-031-STPS-2011 and NOM-009-STPS-2011; preparing reinforcing bars and stirrups; cutting formwork boards and applying release agent; mixing cement–sand mortar in the artesa and concrete in the trompo in the work order's proportions; and producing the list of supplies and the stacked, protected material.

Not published

Elemento 2: Construir elementos verticales de la edificación

Marking reference points, axis strings, centers, and faces; setting aligned, plumbed guides and transferring levels with the water-level hose; building a castillo with no voids or protrusions over 2 cm²; and building a level, plumb wall of saturated, staggered pieces with uniform joints.

Not published

Elemento 3: Construir elementos horizontales de la edificación

Laying out slabs and beams; waterproofing the wall base surface before the desplante; building a stone foundation on a plantilla with staggered, seated stones and enrase; and building a shored slab with a beam, with separators between steel and formwork and no voids or protrusions over 2 cm².

Not published

Elemento 4: Colocar firmes y aplanados

Preparing the wall by wetting and chiseling, setting maestras at most every 2 m, applying common plaster and rustic plaster with granzón (vivo or planchado), and placing a reinforced floor firme with joints, a uniform thickness, and the specified level.

Preparing for the CONOCER Albañilería en Obra Negra Exam

What You Need to Know

  • Passing score: Competency judgment: Competente or Todavía no competente
  • Assessment: One standard with four elements, developed by the committee of the Cámara Mexicana de la Industria de la Construcción with the ICIC and published in the DOF on 24 May 2013: Elemento 1 (Habilitar los insumos para la construcción de elementos verticales y horizontales), Elemento 2 (Construir elementos verticales de la edificación), Elemento 3 (Construir elementos horizontales de la edificación), and Elemento 4 (Colocar firmes y aplanados). Products include the list of supplies, prepared material, a castillo, a wall, support guides, a slab with beam, common and rustic plasters, and a firme. The evaluation is estimated at 30 minutes of desk work and 6 hours in the field.
  • Time limit: About 6.5 hours estimated (30 minutes desk work, 6 hours field)
  • Exam / certification fees: Varies by accredited certifier (not published by CONOCER) Official sources

Using Our Practice Resources

  • Work through all 71 available questions
  • Review every answer and explanation
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CONOCER Albañilería en Obra Negra: Suggested Study Strategy

1Learn EC0326's four elements and their order: prepare supplies, build vertical elements, build horizontal elements, then place firmes and plasters.
2Know the quality limits EC0326 states: no voids or protrusions larger than 2 cm² on castillos, slabs, and beams, and maestras at most every 2 m on a plastered wall.
3Practice the sequences: trompo loading (wet the drum, then sand, gravel, cement, water), castillo construction (steel, form, plumb, brace, pour, rod, tap, strip), and plastering (wet, chisel, maestras, strings, apply, straightedge, llana, plumb bob).
4Review the glossary terms EC0326 defines, such as habilitar, estribos, desmoldante, artesa, trompo, cuatrapeo, paño, tacones, oquedad, trabe, aplanado, firme, and mortero.
5Rehearse site arithmetic: 3-4-5 squaring, mix proportions such as 1:4, stirrup counts, and volumes of foundations, slabs, beams, and plaster coats.

Frequently Asked Questions

What is the official format of the CONOCER EC0326 evaluation?

An accredited certifier, evaluation center, or independent evaluator observes the candidate in a real or simulated setting. In a simulated setting the candidate may build models or full-size mock-ups with reusable material, using the tools, materials, and equipment EC0326 lists, such as the water-level hose, plumb bob, escantillón, trompo, and 3/8 in and 1/2 in reinforcing steel. EC0326 estimates 30 minutes of desk work and 6 hours in the field. There is no official multiple-choice exam.

How is the CONOCER EC0326 certification graded?

The result is a competency judgment: Competente or Todavía no competente. A candidate found competent receives a certificate of labor competency issued by the Secretaría de Educación Pública through CONOCER.

How long is an EC0326 certificate valid?

EC0326 sets the validity of the competency certificate at 4 years, the same as the standard's revision period. CONOCER notes that each standard specifies its own certificate validity.

How much does CONOCER EC0326 certification cost?

CONOCER does not publish a single national fee. It states that evaluation and certification costs vary by standard and by the evaluation center chosen, so candidates should ask accredited certifiers listed in RENEC for EC0326.

Is this OpenExamPrep question bank an official CONOCER test?

No. It is an independent, English-language multiple-choice study adaptation of the EC0326 criteria and common site practice. It is not an official CONOCER examination or translation, and it cannot replace the practical evaluation.