DMC 2010-13 and DAO No. 2007-29 Land Survey Regulations

This set of flashcards covers geodetic and project control survey regulations, monument specifications, technical standards for PPCS/PTM, and administrative requirements under DMC 2010-13 and DAO No. 2007-29.

According to DMC 2010-13, which type of surveys must be fixed on the surface of the earth by permanent monuments?

Control Surveys

Which sections of DAO No. 2007-29 define and classify control surveys into geodetic and project control surveys?

4, 8

In what reference system must all Geodetic Control Surveys be conducted using survey-grade GNSS receivers?

Philippine Reference System of 1992 (PRS92)

Under which law, also known as the Philippine Geodetic Engineering Act of 1998, must a qualified professional be authorized to conduct the survey?

RA 8560

Who is responsible for issuing the Survey Order as defined in Section 15 of DAO No. 2007-29?

NAMRIA Administrator

What document, when received by a contractor, signals the official date of commencement for a survey project?

Notice to Proceed

What are the three core components of a Geodetic Control Survey Party?

Project Head Office, Office Operations, and Field Operations

Which two plans must be included in the Geodetic Control Work Plan submitted to NAMRIA?

Project Management Plan and Technical Plan

What value indicates a higher probability of accuracy in GNSS observations, and must be low during field timing?

Position Dilution of Precision (PDOP)

To disrupt transmission of data properly, reconnaissance must identify radio station towers and obstructions above what degree of the horizon?

$$30^{\circ}$$

For first and second order accuracy survey control monuments, what are the dimensions of the top cross-section, bottom cross-section, and total length?

Top: $30 \times 30\,\text{cm}$; Bottom: $40 \times 40\,\text{cm}$; Length: $120\,\text{cm}$

For third and fourth order accuracy survey control monuments, what are the dimensions of the top cross-section and total length?

Top: $20 \times 20\,\text{cm}$; Length: $100\,\text{cm}$

How are control points numbered to distinguish those established by NAMRIA from those established by LMB/LMS?

NAMRIA: $1$ to $3000$; LMB/LMS: $3001$ and above

What specific font type, size, and thickness are required for the engraved letters and numbers on reference monuments?

Gothic Bold font, $2.5\,\text{cm}$ in height, $2\,\text{cm}$ in width, and $0.4\,\text{cm}$ in thickness

How many known PRS 92 control points must be included in a network design at minimum?

At least $3$ known points

In achieving geodetic control accuracy for 1st and 2nd Order, what is the minimum number of GNSS receiver units required per survey team?

At least $3$ receiver units

What is the required minimum number of observations to achieve 1st Order, 2nd Order, and 3rd Order accuracy connection to existing controls?

1st Order: $3$ observations; 2nd Order: $2$ observations; 3rd Order: $1$ observation

What is the duration for posting the Public Land Incentive Survey (PIS) in Barangay Halls for cadastral projects?

$30$ days

What is the definition of a tie line in the context of land survey and lot positioning?

A straight line with known azimuth and distance computed based on the position of corner $1$ of the lot from an established reference monument

In which direction is the azimuth of all survey lines reckoned from zero?

Reckoned from the south as zero direction following clockwise of the quadrants

What is the designation for surveys used for geographic and scientific investigations that cannot be used for titling?

Special Work Order (Swo)

What are the standard dimensions and marginal lines for a Cadastral Map (CM)?

Overall: $54 \times 54\,\text{cm}$; Marginal lines: $50 \times 50\,\text{cm}$

What is the standard scale of a cadastral map drawn in the PPCS/PTM-PRS 92?

$$1:4000$$

What is the required temperature range for steel tapes used in land surveys for standard length calibration?

Between $25\,^{\circ}\text{C}$ and $35\,^{\circ}\text{C}$

What coordinate system was adopted in the Philippines via Lands Circular No. 64 in 1965?

Philippine Plane Coordinate System (PPCS), also known as the Philippine Transverse Mercator (PTM) Grid

What are the characteristics of the Philippine Plane Coordinate System (PPCS) regarding Spheroid and Scale Factor at the Central Meridian?

Spheroid: Clarke 1866; Scale factor: $0.99995$

What is the point of origin for the Philippine Plane Coordinate System (PPCS)?

The intersection of the Equator and the Central Meridian of each zone, with Northing of $0$ meter and an Easting of $500,000$ meters

What are the transformation constants for $\Delta X$, $\Delta Y$, and $\Delta Z$ when converting from WGS84 to the PRS92 datum?

$\Delta X = 127.62195\,\text{m}$, $\Delta Y = 67.24478\,\text{m}$, and $\Delta Z = 47.04305\,\text{m}$

What are the rotation constants (Rot X, Rot Y, Rot Z) for the transformation from WGS84 to PRS92 datum?

$\text{Rot X} = -3.06762''$, $\text{Rot Y} = +4.90291''$, and $\text{Rot Z} = +1.57790''$

What are the allowable angular error of closures for primary, secondary, and tertiary traverses?

Primary: $2''.5 \sqrt{P}$; Secondary: $10''.0 \sqrt{S}$; Tertiary: $30'' \sqrt{T}$

What is the PRS92 province code for Ifugao, Apayao, and Metro Manila?

Ifugao: IFU; Apayao: APA; Metro Manila: MMA

What is the PRS92 province code for Zamboanga Sibugay and Sultan Kudarat?

Zamboanga Sibugay: ZSI; Sultan Kudarat: SKR