MN-SB-06755-A - Field Inspection Form.xlsx

XLSX spreadsheet 312 KB Posted Jan 31, 2025

Attached to: RFP 252F-24 Bridge Management System
Solicitation number: BD-24-1206-40000-40000-111953
Issued by: Suffolk County, Massachusetts

About this file

Written by GovTribe AI · Mar 31, 2025

The submitted file is an MBTA ERS (Earth Retaining Structure) Field Inspection Form for the Mattapan Line in Boston, Massachusetts, documenting a comprehensive infrastructure inspection conducted on 10/15/24. The form covers a line segment from mile point 067+55 to 079+55, focusing on detailed examination of various structural elements including steel, concrete, timber, masonry, MSE (Mechanically Stabilized Earth), granite/rockery, anchors, weep holes, construction joints, expansion joints, panel joints, miscellaneous attachments, and slope stability. The inspection form provides an extensive coding system for identifying and categorizing potential defects across multiple structural components, with specific defect codes for issues such as corrosion, cracking, erosion, settlement, vegetation growth, and structural deterioration.

The field inspection form is designed to systematically document and assess the condition of earth retaining structures, providing a standardized method for engineers and inspectors to record structural integrity, potential vulnerabilities, and maintenance requirements. While the form does not include specific repair recommendations or cost estimates, it serves as a critical tool for infrastructure management by creating a detailed, structured record of structural conditions that can inform future maintenance, repair, and replacement strategies. The comprehensive nature of the form suggests a rigorous approach to infrastructure monitoring, with multiple categories and subcategories that allow for precise documentation of structural elements and their potential deficiencies.

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Cover Sheet

MBTA ERS FIELD INSPECTION FORMS
ERS ID No.:	MN-SB-067+55-A		Line (Baseline)	Mattapan		Inspection Date	10/15/24
Start (Mile Point/Stationing):		067+55			End (Mile Point/Stationing):	079+55

Service Line:		Transit		Red Line			Orange Line		Green Line		Blue Line
			FALSE			FALSE		FALSE		FALSE
		Commuter Rail
		FALSE
		Other			Mattapan Line
		TRUE
City/Town:	Boston

FIELD INSPECTION DEFECT CODES - QUICK REFERENCE

GENERAL		STEEL ERS ELEMENTS		CONCRETE ERS ELEMENTS
1010	Abrasion/Wear	2010	Corrosion/Section Loss	3010	Cracking
1020	Bulging/Distortion	2020	Cracking	3020	Delamination/Patched Area
1030	Erosion/Scour			3030	Efflorescence/Rust Staining
1040	Grade Heave/Settlement Along Wall			3040	Exposed Rebar
1050	Horizontal Rotation/Settlement			3050	Spalling/Scaling

TIMBER ERS ELEMENTS		MASONRY ERS ELEMENTS		MSE ERS ELEMENTS
4010	Checks/Shakes	5010	Cracking/Voids	6010	Bowing
4020	Cracking	5020	Efflorescence/Rust Staining	6020	Cracking
4030	Decay/Rot	5030	Mortar Breakdown/Missing Mortar	6030	Delamination/Cracked Areas
4040	Fire Damage	5040	Spalls/Fractures	6040	Deterioration
4050	Insect Damage/Timber Borers			6050	Efflorescence/Rust Staining

GRANITE / ROCKERY ERS ELEMENTS		ANCHORS		WEEP HOLES
7010	Cracking/Voids	8010	Corrosion	9010	Blockage
		8020	Nut Chuck	9020	Material Loss
		8030	Bearing Plate and Bevel
		8040	Wall Deterioration
		8050	MSE Soil Reinforcing

CONSTRUCTION JOINTS		EXPANSION JOINTS		PANEL JOINTS
1110	Movement	1210	Movement	1310	Exposed Fabric
1120	Separation	1220	Separation	1320	Soil Movement
1130	Soil Movement			1330	Spacing

MISCELLANEOUS ATTACHMENTS		SLOPE STABILITY FRONT AND BACK OF ERS
1410	Corrosion	1510	Bulging/Distortion
1420	Weld	1520	Erosion/Scour
1430	Base Plate	1530	Grade Heave/Settlement Along Wall
1440	Bolt Pullout
1450	Wall Deterioration

1 -Steel ERS

ERS Field Inspection Form
STEEL ERS FACING (SF)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1010	Abrasion/Wear
1020	Bulging/Distortion	ERS Sketch
1030	Erosion/Scour
1040	Grade Heave/Settlement Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vegetation Growth
1080	Vertical Rotation/Tilting

2010	Corrosion/Section Loss
2020	Cracking

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

2-Concrete ERS

ERS Field Inspection Form
CONCRETE ERS FACING (SF)
Line (Baseline):		Mattapan			ERS ID Number:		MN-SB-067+55-A		Section No:
Structure Type, Main:		Cantilever		Start (Mile Point/Stationing):		067+55		End (Mile Point/Stationing):		079+45
ELEMENT DEFECTS			Vert. Scale
1010	Abrasion/Wear
1020	Bulging/Distortion		ERS Sketch
1030	Erosion/Scour
1040	Grade Heave/Settlement Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vegetation Growth
1080	Vertical Rotation/Tilting

3010	Cracking
3020	Delamination/Patched Area
3030	Efflorescence/Rust Staining
3040	Exposed Rebar
3050	Spalling/Scaling

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

3-Timber ERS

ERS Field Inspection Form
TIMBER ERS FACING (SF)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1010	Abrasion/Wear
1020	Bulging/Distortion	ERS Sketch
1030	Erosion/Scour
1040	Grade Heave/Settlement Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vegetation Growth
1080	Vertical Rotation/Tilting

4010	Checks/Shakes
4020	Cracking
4030	Decay/Rot
4040	Fire Damage
4050	Insect Damage/Timber Borers
4060	Splits/Delamination

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

4-Marsonry ERS

ERS Field Inspection Form
MASONRY ERS FACING (SF)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1010	Abrasion/Wear
1020	Bulging/Distortion	ERS Sketch
1030	Erosion/Scour
1040	Grade Settlement/Heave Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vertical Rotation/Tilting
1080	Vegetation Growth

5010	Cracking/Voids
5020	Efflorescence/Rust Staining
5030	Mortar Breakdown/Missing Mortar
5040	Spalls/Fractures

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

5-MSE ERS

ERS Field Inspection Form
MSE ERS FACING (SF)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1010	Abrasion Wear
1020	Bulging/Distortion	ERS Sketch
1030	Erosion/Scour
1040	Grade Heave/Settlement Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vegetation Growth
1080	Vertical Rotation/Tilting

6010	Bowing
6020	Cracking
6030	Delamination/Cracked Areas
6040	Deterioration
6050	Efflorescence/Rust Staining
6060	Exposed Rebar

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

6-Granite-Rockery

ERS Field Inspection Form
GRANITE / ROCKERY ERS FACING (SF)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1010	Abrasion Wear
1020	Bulging/Distortion	ERS Sketch
1030	Erosion/Scour
1040	Grade Heave/Settlement Along Wall
1050	Horizontal Rotation/Settlement
1060	Leakage
1070	Vegetation Growth
1080	Vertical Rotation/Tilting

7010 Cracking/Voids

Horiz. Scale

Station	Defect	CS	Qty. (SF)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

7-Anchors

ERS Field Inspection Form
ERS ANCHORS (EA)
Line (Baseline):		Franklin			ERS ID Number:			Section No:
Structure Type, Main:		Crib		Start (Mile Point/Stationing):		19.06	End (Mile Point/Stationing):		19.09
ELEMENT DEFECTS			Vert. Scale
8010	Corrosion
8020	Nut Chuck		Sketch
8030	Bearing Plate and Bevel
8040	Wall Deterioration
8050	MSE Soil Reinforcing

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

8-Weep Holes

ERS Field Inspection Form
WEEP HOLES (EA)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
9010	Blockage
9020	Material Loss	Sketch

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

9-Construction Joints

ERS Field Inspection Form
ERS CONSTRUCTION JOINTS (EA)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1110	Movement
1120	Separation	Sketch
1130	Soil Movement

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

10-Expansion Joints

ERS Field Inspection Form
ERS EXPANSION JOINTS (EA)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1210	Movement
1220	Separation	Sketch

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

11-Panel Joints

ERS Field Inspection Form
ERS PANEL JOINTS (EA)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1310	Exposed Fabric
1320	Soil Movement	Sketch
1330	Spacing

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

12-Misc Attach

ERS Field Inspection Form
ERS MISCELLANEOUS ATTACHMENTS (EA)
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1410	Corrosion
1420	Weld	Sketch
1430	Base Plate
1440	Bolt Pullout
1450	Wall Deterioration

Horiz. Scale

Station	Defect	CS	Qty. (ea)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

13-Slope Stability

ERS Field Inspection Form
SLOPE STABILITY FRONT AND BACK OF ERS
Line (Baseline):				ERS ID Number:		Section No:
Structure Type, Main:			Start (Mile Point/Stationing):		End (Mile Point/Stationing):
ELEMENT DEFECTS		Vert. Scale
1510	Bulging/Distortion
1520	Erosion/Scour	Sketch
1530	Grade Heave/Settlement Along Wall

Horiz. Scale

Station	Defect	CS	Qty. (lf)	Dimensions							Comments
				L (ft-in)		x	W/H(ft-in)		x	D(in)
					-	x		-	x

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File details come from the government source that posted it. Updated Mar 31, 2025.